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HomeMy WebLinkAboutMITIGATION (3) . . J-, ,.~~...",:-" - Project No. 88-250 January 1989 \ Report SITE CHARACTERIZATION AND REMEDIAL ALTERNATIVES DEVELOPMENT Future Homeless Shelter Property Bakersfield, California City Of Bakersfield Bakersfield, California .... . . -"--- ~~ I' ,~ .-=:~ ~ _.~~ '. !.~ r'~'\,:ï (~j;) rr== ¡-~\ /;i I ' -- I, ' -----. "f $ " I ----, I 1\ ' i I [ . ~j:- !'\ )).::---\ ':( ~~) !1 ¡r-- :U'\\¡/il <::?'J L=:: \,::::./, ~¿/ LJ '':'~/ J IL-" u L COf\JSUL T ANTS, INC. January 27, 1989 Project No. 88-250 Mr. Ralph Huey Hazardous Waste Coordinator CITY OF BAKERSFIELD 1501 Truxtun Avenue Bakersfield, California 93301 Report Site Characterization and Remedial Alternatives Development Future Homeless Shelter Proµerty Bakersfield. California Dear Mr. Huey: Transmitted herewith are three copies of the report related to the subject investigation. Your review c9fuments on the draft report, dated January 4, 1989, have been considered in the preparation of this final report. Geosystem Consultants, Inc. appreciates the providing services to the City of Bakersfield. questions, please do not hesitate to call. opportunity of I f you have any Sincerely, G;X:; ;;;,r:5TS, INC. Mohsen Mehran, Ph ,D. Project Manager MM:sh Enclosures '32':3 0/1cuurr"oit l:c:;si-, Suite G .. irvine, CciifornlO 927'14 'erepr'o"e C"j\ 553-8757 · F.6.X (714) 261-8550 ! ¡. REPORT SITE CHARACTERIZATION AND REMEDIAL ALTERNATIVES DEVELOPMENT FUTURE HOMELESS SHELTER PROPERTY BAKERSFIELD, CALIFORNIA Prepared for CITY OF BAKERSFIELD BAKERSFIELD, CALIFORNIA Ußrn©~DWŒ[Q) JAN .~ 1 1989 ENVIRONMENTAL Hi=ð,l T.... Prepared by Geosystem Consultants, Inc. 18218 McDurmott East, Suite G Irvine, California 92714 (714) 553-8757 FAX (714) 261-8550 Project No. 88-250 January 1989 ~ rc ~ (0 \\/7 © c::¡¡=' I C r-:- -;-- ~-;;l6Y~ U ~ U :c~.:. r. " ... TABLE OF CONTENTS LIST OF TABLES LIST OF FIGURES 1.0 INTRODUCTION 1,1 OBJECTIVE 1,2 APPROACH 2,0 BACKGROUND INFORMATION 2.1 SITE LOCATION 2,2 SITE DESCRIPTION 2.3 SITE HISTORY 3,0 FIELD ACTIVITIES 3,1 DRILLING AND SOIL SAMPLING 3,2 BORING LOCATIONS 3,3 SAMPLING HANDLING 3.4 DECONTAMINATION PROCEDURES 3.5 BORING ABANDONMENT AND DRILL CUTTINGS 4,0 PHYSICAL TESTING AND CHEMICAL ANALYSES 4.1 PHYSICAL TESTING 4,2 CHEMICAL ANALYSES 4 , 3 RESULTS 5,0 DISCUSSION 5,1 STRATIGRAPHY 5,2 SOIL QUALITY 5,3 SOIL QUALITY CRITERIA 6,0 EVALUATION OF REMEDIAL ALTERNATIVES 6,1 SOIL REMOVAL AND OFF-SITE DISPOSAL 6,2 ON-SITE AERATION 6.3 ON-SITE INCINERATION 6,4 ON-SITE OXIDATION 6.5 IN-SITU TREATMENT 6,6 NO ACTION 6,7 SELECTION OF REMEDIAL ALTERNATIVE i PAGE iii iii 1-1 1-1 1-2 2-1 2-1 2-1 2-2 3-1 3-1 3-2 3-3 3-4 3-4 4-1 4-1 4-1 4-1 5-1 5-1 5-2 5-4 6-1 6-1 6-2 6-3 6-4 6-5 6-5 6-6 0' ,--= . -:::;;0 (c:::. \\ 7 (~ C r '--=~, . ; r '-, --' : ~ It : \:-:ì \.; ~_ ~ ;; =='; I . \ .3l (~ \~j \".::::.. ~ ~) -oJ --==::; 'j '-- , f 7,0 CONCLUSIONS REFERENCES TABLES FIGURES APPENDIX A: APPENDIX B: ~ APPENDIX C: TABLE OF CONTENTS (Continued) PAGE 7-1 BORING LOGS GRAIN SIZE DISTRIBUTION CURVES CERTIFICATES OF ANALYSES ii /0 1-;-' ,~ ' ~ \:V@IF rc:: ? .~ i, '~lIC!~/~ ,,)J UI :L- " '::;::'-J ~ ~/~, '-=/ L-.-- - '-- I ,~ TABLE NO, 1 2 3 4 LIST OF TABLES TITLE Summary of Previous Soil Quality Data Results of Physical Soil Testing Results of Chemical Analyses Leaching Potential Analysis for Gasoline, Using Total Petroleum Hydrocarbons (TPH) and Benzene, Toluene, Xylene, and Ethyl Benzene (BTX&E) 5 Initial screening of Remedial Technologies LIST OF FIGURES FIGURE NO, TITLE 1 Site Location Map 2 Site Plan 3 Partial site Plan 4 Schematic Soil Quality and Geologic Profiles iii ,~-::::;:, rc:: ((\~ \ ~ '0/1 (c~ c-, r, ,~~~: ,~ " '::-l I ~ ,~\ I '~,', " - \ \~.j I~ ~':=':' C:::::... u ':::=::..) ~_; == _ ~ 1. :! 1.0 INTRODUCTION The City of Bakersfield (the City) is proposing to develop a shelter for the homeless on vacant property (the site) in Bakersfield, California. In the past, a portion of the site was used for fueling vehicles from two underground storage tanks. During removal of these facilities, preparatory to developing the site, soils containing motor vehicle fuels were encountered. Subsequent investigations indicated that the contaminated soils extended vertically beneath the former tanks to a depth of at least 85 feet, On August 31, 1988, the Community Development Division of the City issued a request for proposal (RFP) regarding further assessment of subsurface conditions and the development of potentially applicable remedial alternatives to mitigate contaminated soil at the site. Geosystem Consultants, Inc. (Geosystem) responded with a proposal, dated September 13, 1988, and was subsequently retained by the City to conduct the work specified in the RFP. Subsequent to completing the work specified in the RFP, additional soil investigations were authorized by the City to further assess the subsurface conditions. This report presents the findings of the subsurface investigations performed by Geosystem and an evaluation of applicable remedial alternatives. 1,1 OBJECTIVE The overall objective of the subject scope of work was to further characterize the areal and vertical extent of soil contamination beneath and around the former underground storage tanks and develop the most appropriate remedial alternatives considering site- specific conditions and current regulatory criteria or guidelines. 1-1 /;:..:::;:, r¡===:' ''(1\ (~'\\/7 (CG = ~ ~" ~. ,~ª~\,s)~ V \~~ - =\_'~ -:I ¿ 1 . 2 APPROACH In accordance with the RFP (City of Bakersfield, August 31, 1988), the approach adopted to achieve the stated objectives included drilling and soil sampling, the physical testing and chemical analysis of soil samples, and evaluation of the resulting data. Background information pertaining to the site characterization is summarized in section 2. 0. Field activities are described in Section 3,0, and physical testing and chemical analyses are presented in section 4, 0. The resulting data are discussed in Section 5, ° in terms of stratigraphy, soil quality, and soil quality criteria, An evaluation of remedial alternatives is presented in Section 6.0, and conclusions are presented in section 7,0, 1-2 ';:'::'-12 ·~Il!;; C~\J7C§~~C;- ~ Qi ìi "-.0 .~, :" .:. ! 2.0 BACKGROUND INFORMATION This section summarizes background information considered pertinent to the characterization of subsurface conditions and the development and evaluation of remedial alternatives. The background information includes the location, a description, and a brief history of the site, including previous investigations. It is noted that the information presented herein was derived primarily from documents provided to Geosystem by the city. 2,1 SITE LOCATION The site is located in Bakersfield, California and consists of two adj acent lots, referred to in the RFP as sites 1 and 2, that include the postal addresses 1530, 1600, and 1610 East Truxtun Avenue. The site location is shown in Figure 1, and a site plan is shown in Figure 2. As shown in Figure 1, the site is located in the southwest quarter of Section 28, Township 29 south, and Range 28 east (relative to the Mount Diablo base and meridian), immediately south of the Southern Pacific railroad yard in east Bakersfield, In accordance with the RFP, only site 1 has been addressed in the subject scope of work. 2,2 SITE DESCRIPTION site 1 occupies the northwest corner of the property and includes the area in which motor vehicles were fueled. The fueling facilities included two 1,000-gallon underground gasoline storage tanks and a fuel dispensing island with one pump, which have since been removed, The approximate former locations of these facilities are shown in Figure 3. The site is currently unpaved and is bounded by a chainlink fence, site 1 also features a corrugated metal, two-story building, as shown in Figures 2 and 3. 2-1 @re(ÜJ~'0/7~II¡C~' ~ ~~J U;; ~:/ \::=.. ìJ ;j) U ~_~ , ~ T 2,3 SITE HISTORY On May 26, 1988, Apex Environmental removed the two 1,000-gallon gasoline tanks from Site 1. Soil samples were collected for chemical analysis at 2 and 6 feet below the invert of each tank. The results of chemical analyses indicated total petroleum hydrocarbon (TPH) concentrations ranging from 800 to 7,000 mg/kg (parts per million). On January 20, 1988, the city received a letter from the Kern County Health Department requiring a site characterization investigation to delineate the vertical and lateral extent of TPH in soil. In July 1988, William H. Park and Associates (Park) supervised the drilling of two borings, Test Holes TH No. 1 and TH No. lA, in the area of the former underground gasoline tanks (Park, August 1988) . Test holes TH No. 1 and TH No. 1A were advanced to depths of 40 and 85 feet below grade, respectively, utilizing hollow-stem auger drilling techniques. The locations of these borings are shown in Figure 3, In Test Hole TH No.1, located just west of the north end of the dispensing island, soil samples were collected at 5-foot intervals to the total depth of the boring. In Test Hole TH No, lA, located about 6 feet south of TH No.1, soil samples were collected at 5-foot intervals from 45 to 85 feet below grade. The results of field screening with a Gastechtor Oxy/Surveyor indicated contamination to the maximum depth investigated. Selected soil samples from Test Holes TH No. 1 and TH No. 1A were submitted for chemical analyses of total volatile fuel hydrocarbons (TVFH) and benzene, ethyl benzene, toluene, and xylenes (BETX) using modified D,S, Environmental Protection Agency (EPA) Method 8015, The results of these chemical analyses are summarized in Table 1, The soil quality data confirmed that TVFH and aromatic hydrocarbons are present in soils to the maximum depth investigated, The data 2-2 ~\ Ie' (f0 (C? ~/7 iC3' ~ ;- --;-' .~ 01 LÇ, ':~¿) ~ ì L! ,';2):..; ~_ ,. .~ indicate that hydrocarbon concentrations appear to decrease with depth; however, the presence of TVFH and BETX at the a5-foot depth has raised concern over the vertical extent of the soil contamination. Geosystem is unaware of any other previous investigations at Site 1. 2-3 ~ r= ((u (Q\ ~17 (0 'lPr ! c::::' - ;- ~=:]Lç~~ Lf ~) U ~> .' ;£ 3.0 FIELD ACTIVITIES Field activities at the site were conducted between November 1 and 7, 1988 and included drilling, soil sampling, site restoration, and related tasks. These activities are described in the following sections. 3,1 DRILLING AND SOIL SAMPLING A total of five borings, B-2 through B-6, were drilled to depths ranging from 70 to 140 feet below grade to assess the vertical and areal extent of hydrocarbons in the soil profile. The locations of Borings B-2 through B-6 are shown in Figures 2 and 3. The rationale behind the selection of the boring locations is presented in Section 3.2, Drilling was performed by ABC Liovin Drilling, of Signal Hill, California, using a Failing F-10 drilling rig equipped with 8-inch diameter, continuous-flight, hollow-stem augers and air-rotary drilling capabilities, Borings B-2 and B-5 were advanced to 140 and 120 feet below grade, respectively, using a combination of hollow-stem auger and air- rotary drilling techniques. Borings B-3, B-4, and B-6 were advanced to 100, 100, and 70 feet below grade, respectively, using hollow-stem auger techniques, as specified in the RFP. It is noted that the original scope of work included only Borings B-2, B-3, and B-4, at locations specified by the City. Based on field observations, and upon authorization from the City, Borings B-5 and B-6 were subsequently added to the original scope of work to further define the extent of hydrocarbon contamination. Undisturbed soil samples were collected from Borings B-2 through B-6 at nominal depths of 5, 10, 20, 30, 40, and at subsequent 2 a-foot intervals . Additional soil samples were collected at intermediate depths at the discretion of the supervising geologist, 3-1 ~ í? Î2\, í\ r0:> "\/70 =1 r' c;=: --:" ',- -f( Ii\.:...--::-, \. '..'--"-,ì I ,- \2:-ZJlS\'::c!)8J V 0 u ,;;~C,' " :! Soil samples were collected using a Modified California Sampler. The Modified California Sampler consists of a split-barrel with a drive shoe at the lower end and a drive head and a waste barrel at the upper end. The samplers used were 3 inches O.D., 2.5 inches I,D" and consisted of an l8-inch sampling barrel lined with thin- walled brass sample sleeves. The samplers were driven into the ground with a 140-pound hammer, free-falling through 30 inches. The number of blows required for each successive 6-inch penetration interval were recorded on field boring logs. Edited boring logs are included as Appendix A to this report. It is noted that prior to each sampling attempt, drill cuttings and slough were removed from the bottoms of the borings to facilitate the collection of samples representative of undisturbed conditions. This pre-sampling procedure also minimizes potential cross-contamination of samples for chemical analyses by overlying drill cuttings. On recovery from the boring, the sampler was disassembled and the sample sleeves removed. The ends of the soil samples selected for chemical analysis were trimmed flush and fitted with air-tight plastic caps lined with teflon, which were taped in place. The soil from the middle sample sleeve was extruded from the sleeve into a resealable plastic bag. The contents of the bag were allowed to volatilize and the head space within the bag was subsequently screened with a photoionization detector (PID) to qualitatively evaluate the presence of volatile hydrocarbons, The PIO readings were recorded on the boring logs (Appendix A) . 3,2 BORING LOCATIONS The locations of Borings B-2, B-3, and B-4 were specified by the City in the August 31, 1988 RFP. Prior to the initiation of field activities, however, the locations were revised, as described 3-2 (ê] ~ (Q) ~ ~f ~ U [[~'''[ " ~' below, based on field observations and access restrictions. It is noted that the revised boring locations were discussed with and approved by City personnel prior to drilling. Boring B-2 was located between the previously drilled Test Holes TH No, 1 and TH No. 1A to assess the vertical extent of the soil contamination. Based on the data available at the time, the location of Boring B-2 was believed to be near the center of the impacted area where the vertical extent of contamination would be expected to be greatest. Boring B-3 was located approximately 15 feet north of Boring B-2 in accordance with the RFP. Boring B-4 was originally to be located approximately 5 feet east of Boring B-2; however, due to access restrictions by the adjacent building, the boring was relocated to about 10 feet west of Boring B-2. Based on visual observations and PID field screening measurements during the drilling of the first three borings, Borings B-5 and B-6 were added to the scope of work. More specifically, visual observations and field screening indicated that the impacted zone extended radially a greater distance from Boring B-2 than previously anticipated. Accordingly, Boring B-5 was located about 40 feet northwest of Boring B-2, and Boring B-6 was located about 60 feet south-southwest of Boring B-2. The addition of Borings B-5 and B-6 to the scope of work and the boring locations were discussed with and approved by City personnel in advance. 3,3 SAMPLE HANDLING Immediately upon collection, the soil samples were labeled with a unique sample identification number and placed on ice in coolers. The ice chests were hand delivered to the analytical laboratory. 3-3 e /f"'0 ~ \,;1 § ~ c¡= ¡-;', ;- yIC\\j) S) r~ \, =:.. ' _'J L::::::J,~ '-. cJ - ~." " 1. Strict chain of custody records were maintained at all times from sample collection to receipt by the analytical laboratory. 3.4 DECONTAMINATION PROCEDURES To minimize the potential for cross-contamination, all soil sampling equipment was thoroughly cleaned prior to first use and between successive sampling attempts. In additionl the hollow-stem augers were steam cleaned prior to first use and between borings. Procedures for soil sampling equip~ent cleaning included scrubbing in an alconex detergent solution followed by one potable water rinse and one distilled water rinse. 3,5 BORING ABANDONMENT AND DRILL CUTTINGS On completion of soil sampling, the borings were sealed to the ground surface with a seven-sack cement/bentonite mix containing 3lB-inch rock. In addition to the borings drilled by Geosystem, previously drilled Test Holes TH No. land TH No. lA were also abandoned in this manner, Cuttings generated during drilling activities were placed in 55-gallon steel drums which are currently in temporary storage at the site. As generator, it is the City's responsibility to dispose of these materials in accordance with all appropriate federal, state, and local regulations. 3-4 (@~(Q)~W~u~ .¡ 4.0 PHYSICAL TESTING AND CHEMICAL ANALYSES This section describes the physical testing and chemical analyses performed on the soil samples collected from Borings B-2 through B-6. Physical soil testing was performed by Converse Consultants, Inc. of Irvine, California. Chemical analyses of soil samples were performed by Del Mar Analytical of Irvine, California. Del Mar Analytical is certified by the state of California. 4,1 PHYSICAL TESTING Selected soil samples were subjected to physical testing to determine grain size distribution, moisture content, bulk and dry densities, and porosity. These tests were performed to confirm field soil classifications and to further characterize the physical properties of the soils underlying the former underground storage tank area, 4,2 CHEMICAL ANALYSES All soil samples collected were analyzed for TVFH by EPA Method 5030/8015, and for BETX by EPA Method 8020. BETX are components of gasoline, and as such, are representative of the materials previously used and stored at the site. The detection limits achieved by EPA Methods 5030/8015 and 8020 were 1,0 mg/kg and 0,05 mg/kg, respectively. 4,3 RESULTS The results of the physical soil tests are summarized in Table 2. Grain size distribution curves are presented in Appendix B, The results of chemical analyses for TVFH and BETX are summarized in Table 3 and the certificates of analyses, as received from Del Mar Analytical, are included as Appendix C. The certificates of analyses show the date of sample collection, the date of sample 4-1 ;:y, 1= ~'ì CCG '" 17 0'.!F ' r- r;-- \\~ Lc 1,,10 ~ \s ~2J \J ~r= _ ',~ ' .' i receipt by the laboratory, the date the samples were analyzed, and the detailed analytical results. 4-2 (@~CQ)~W~ulE -!! " 5.0 DISCUSSION This section summarizes the principal findings characterization in terms of stratigraphy, soil regulatory criteria for soils, of the site quality, and 5,1 STRATIGRAPHY Based on the soils encountered during the site characterization, the upper 140 feet of the soil profile may be approximated as consisting of four stratigraphic zones. The relative locations of these zones are presented in a schematic cross-section shown in Figure 4. It should be noted that the apparent lateral continuity of the four zones enables the borings to be projected on a single cross-section line. This section line shows the boring locations at their respective radial distances from Boring B-2, which is considered to be located near the center of the contaminated soil profile. The characteristics of the four zones may be summarized as follows: Zone 1: Zone 2: Zone 3: Zone 4: Zone 1 is present from ground surface to about 30 feet below grade and consists of brown, red-brown, and gray- brown silty sands. It is noted that the silty sands are predominately well graded; however, some coarse-grained sand lenses occur within this zone. Zone 2 is grade and red-brown, sands. encountered from about 30 to 90 feet below is characterized by light brown, brown, and predominately well-graded silty to clayey Zone 3 occurs between about 90 and 120 feet and consists of light brown to brown, poorly-graded to well-graded sands, These sands were moderately to well cemented. Zone 4 was observed in Borings B-2 and B-5 at about 120 feet. This zone consists of off-white to brown, poorly to well-graded gravels with coarse sand. Zone 4 extended to the maximum depth investigated of 140 feet below grade. 5-1 ,·(~Ò ¡r= /~ì Ie:: \\//.- r¿.:::, " r, r= c:ì ~- I, Ci'= ~!I ~,ì \'/ ::::;', " i:= ;', "~"IIL \J,f'-.-', U "~; I, ,"-",' ,---.... ---' ~ ---/ ,- - '-" ,- ,. >' . Selected soil samples from Zones 1 and 2 were submitted for physical testing. sieve analyses were performed to determine grain size distribution curves, and unit weights were calculated to determine densities and moisture content. The results of the physical soil testing are summarized in Table 2. Grain size distribution curves are included as Appendix B to this report. The results of the physical tests can be summarized as follows: Zone 1: The Zone 1 soils are classified as silty sands, with an average moisture content of 6.8 percent, an average dry density of 112.5 lb/ft3, and an average porosity of 32 percent. Zone 2: The Zone 2 soils are classified as silty sands to clayey sands, with an average moisture content of 9.6 percent, an average dry density of 112.3 lb/ft3, and an average porosity of 32 percent. 5,2 SOIL QUALITY This section presents the results of the chemical analyses of soil samples collected beneath site 1. A total of 44 samples were analyzed, 41 of which showed detectable concentrations of TVFH or BETX, The results of the chemical analyses are presented in Table 3, It is noted that the results of PID field screening generally follow the trend of increasing or decreasing concentrations of TVFH detected in the soil samples. The maximum concentration of TVFH in Boring B-2, which is considered to be located near the center of the impacted area, was 40,000 mg/kg at 20 feet. The highest concentrations of BETX also occurred at this depth. The concentration of TVFH generally decreased with depth, as shown in the schematic soil quality profile in Figure 4, The isoconcentrations of TVFH, shown in Figure 4, are based on logarithmic interpolation between adjacent control points, The zone of highest TVFH concentrations generally occurs between about 10 feet (23,000 mg/kg) and about 60 feet 5-2 .~ r¡= rP\\ CC? \v7 ~ ~ "lP 'C ;. , ll;llr'\Q)~ ìJ -;) U IL. ,. (11,000 mg/kg) in Boring B-2. Concentrations of TVFH decreased rapidly from 80 feet (5,200 mg/kg) to 100 feet (20 mg/kg) and the declining trend generally continued to 140 feet (7.4 mg/kg), which was the total depth investigated. The maximum concentration of TVFH in Boring B-4 was 9,300 mg/kg at 40 feet, and the maximum concentrations of BETX also occurred at this depth. The concentrations of TVFH generally increased from about 5 feet (1,300 mg/kg) to 40 feet (9,300 mg/kg) below grade and slightly decreased to 100 feet (6,100 mg/kg) where the boring was terminated due to auger refusal. The vertical extent of contamination in Boring B-4 has not been delineated. The maximum concentration of TVFH in Boring B-3 was 9,300 mg/kg at 40 feet and, correspondingly, the highest BETX concentrations generally occurred at this depth. The upper 20 feet of the soil profile does not appear to be significantly impacted by the operations at the site, as evidenced by TVFH concentrations ranging from 5.7 to 23 mg/kg, However, at 30 feet it appears that the hydrocarbon contamination has migrated laterally in the finer- grained, Zone 2 soils and was detected at concentrations of 8,700 and 9,300 mg/kg at 30 and 40 feet, respectively. The concentrations decrease from 40 feet below grade to a total depth of 100 feet (3.9 mg/kg), as shown in Figure 4. The maximum concentration of TVFH in Boring B-5 was 28 mg/kg at 20 feet. The concentrations from 20 feet to the total depth investigated are low and are generally near the laboratory detection limit, It is noted that the sample collected at 120 feet shows non-detectable concentrations for TVFH and BETX. The results of the PID field screening of soil samples indicates very low concentrations of total organic vapors, with the exception of 125 ppm at 40 feet, 5-3 -,,~ f~-":0 10 "-.:;i,-I,I ')'-=::" \"_'C¡ LS '-'--:>' 'è:::.' ,r:~~ iT ~ ~:~~' oj; The maximum concentration of TVFH in Boring B-6 was 10 mg/kg at 5 feet. From 10 feet to the total depth investigated, the TVFH concentrations are low and generally near the laboratory detection limits; however, the BETX concentrations are as much as 12 times the laboratory detection limit. As shown in Figure 4, it appears that the areal extent of contamination extends to between 30 and 40 feet from Boring B-2, and as such, contamination is also expected to extend areally beneath the building. 5.3 SOIL QUALITY CRITERIA In mid-1985, the DHS and the State Water Resources Control Board formed a Leaking Underground Fuel Tank (LUFT) Task Force to establish procedures for assessing soil contaminated by motor vehicle fuels. The procedures to assess the condition of a site are outlined in the LUFT Field Manual (May 1988). The LUFT Manual requires that soil samples collected beneath the invert of underground fuel tanks be submitted for chemical analysis for TVFH by modified EPA Method 8015 and for BETX by EPA Method 8020. The permissible concentrations of TVFH/BETX in soil are determined by several factors, including the depth to ground water from the sample in question; fractures in the subsurface; average annual precipitation; man-made conduits at the site; and other site-specific features, such as its location in a recharge area, the soil profile, and nearby drinking water wells. The above- mentioned factors for the site may be summarized as follows': o Reportedly, ground water in the area is in excess of 200 feet below the surface, and as such, ground water would be at least 60 feet below the maximum depth investigated (140 feet). o The site is underlain by alluvial deposits in which there are not expected to be "fractures." 5-4 ((~, I~ ~Ù. © \\/7@¥ ~ r;', 17: '~'J c= ~)~} ì.J -c0 U L'= " :- o The site is underlain by alluvial deposits in which there are not expected to be "fractures." o The annual precipitation, averaged for the years 1957 through 1987, for the City of Bakersfield is 5,74 inches (National Weather Service, 1988). o No man-made conduits are known to exist at the site, other than the properly-abandoned soil borings. o The soils at the site are generally coarse-grained. Based on the LUFT Manual procedures and using the site characteristics listed above, an evaluation of the potential for hydrocarbons to be leached from the soils was performed. The evaluation, summarized in Table 4, shows that the site scores a total of 48 points, which is slightly less than the upper score, i.e. least stringent conditions, prescribed in the LUFT Manual. Based on this evaluation, it appears that the maximum permissible concentrations of TVFH and BETX in soils are as follows: COMPOUND CONCENTRATION (mg/kg) TVFH Benzene Toluene Ethyl benzene Xylenes 100 0.3 0.3 1.0 1.0 It is noted that the above maximum permissible concentrations of TVFH and BETX were calculated using the procedure outlined in the LUFT Manual, This procedure provides a simplified approach to assess the potential threat to ground water from contaminated soils and, therefore, should be considered an estimate only, Based on these estimated maximum permissible TVFH and BETX concentrations, it appears that remediation is required to mitigate soil conditions to a depth of about 120 feet beneath the former locations of the 5-5 ,'~ -=-= -~ =::;, ,-\ 17 (-r::-.:; =r E' .~- , -- '- ,\\~ \ .~ I l~' ,,'--='" ,-' _---..1 [' ,---'\ I' ' ~'J--':~ ,,':=::::-'\..::::::-' J :~..J ~ ""'::::=:::'J,--" ~ underground fuel tanks at site 1. As shown in Figure 4, soils that are contained within the 100 mg/kg or greater contour line may require remediation. 5-6 ,~ ¡¡= (R\ (~ '0/7 Cé3" Vr ~~' ;~ 1\:èò~J i r= \~V 2§) U ~0 L LÇ ~ "- ,~ .' ~ 6.0 EVALUATION OF REMEDIAL ALTERNATIVES The remedial alternatives considered in this preliminary evaluation ranged from "total cleanup" to a "no action" approach. This assessment methodology is consistent with state and federal guidance documents and regulations. The specific remedial alternatives considered for screening were as follows: o Soil removal and off-site disposal o On-site aeration o On-site incineration o on-site oxidation o In-situ treatment o No action. The principal criteria considered in screening and evaluating the remedial alternatives included: o Technical feasibility o Effectiveness o Environmental acceptability o Cost. r Each of the remedial alternatives considered is described in the following sections in terms of the appropriateness of the technology, applicability to the site conditions, and cost. Al ternatives which were judged to be technically infeasible, environmentally unacceptable, or economically unrealistic were rejected subsequent to the initial screening. A summary of the remedial alternatives considered is presented in Table 5, 6,1 SOIL REMOVAL AND OFF-SITE DISPOSAL This alternative corresponds to the "total cleanup" option and involves removal of the soil to be remediated by open excavation and off-site disposal at a licensed hazardous waste facility, The open excavation would be performed using a backhoe or front-end loader, As the entire volume of excavated soil is not necessarily 6-1 -=:,'. -= ~~ r0ò \;\/7 ((3:: c:;-= , c - -. =IIJ)'-=::-' '( ~, (, -- ~_~\\_/ \~J L. ¡~ ~ ~- ! contaminated, the soil removed during the excavation would be segregated based on field screening by visual observation, PID readings, or field chemical analyses. Soils considered to be hazardous would be transported off site for disposal, and the remaining non-hazardous soils used as backfill material. Prior to backfilling, soil samples from the bottom and walls of the excavation would be collected for chemical analysis by a certified analytical laboratory. The results would be used to demonstrate that the soils to be remediated have been removed during the excavation. Off-site disposal is a simple and rapid means of removing contaminated soil from the site. The primary disadvantages of this alternative include the high cost of hauling and off-site disposal and the potential long-term liability associated with off-site disposal. It is noted that soil excavation is generally not appropriate for deep contamination and areas where there is potential interference with existing structures. Since the depth of contamination exceeds 100 feet and the areal extent is greater than 40 feet, excavation and off-site disposal has not been considered further because of the high cost, degree of site disturbance, and the threat to the building's integrity. 6,2 ON-SITE AERATION Soil aeration is an effective method of removing volatile organic compounds (VOCs), such as BETX, from contaminated soil, assuming that adequate space is available for handling and spreading of contaminated soil. On-site aeration involves the excavation and placement of contaminated soils in a suitable treatment area to a thickness of 6-2 ((~ rc:: 'FiJ,@\\/7@lf rc -:- "1 '::2] I c \~/ r::0 L( \:.:::::J I : ¡- _ ~ ~ 8 to 10 inches. Soil samples would be collected and analyzed to establish initial conditions with respect to BETX and TVFH concentrations. Initially, the soil in the treatment area would be agitated, using a rotary disk, to promote volatilization of BETX. Previous experience in similar projects has shown that with an ambient temperature of 80 to 90 degrees Fahrenheit, BETX concentrations could be reduced to the parts per billion level within 3 to 5 days, Soil samples would be collected periodically and analyzed for BETX to evaluate the efficiency of the aeration process. The advantages of aeration include the reduction of contaminant concentrations to acceptable levels at a relatively low cost. In the event that the extent of soil contamination is greater than initially estimated, the additional volume of soil does not result in proportional increases in treatment cost. The aeration process may be performed in batches should there be insufficient space to treat the entire volume of contaminated soil. The aeration process has been successfully used to remove TVFH and BETX from soil under various conditions and is considered to be a proven technology which, based on the available data, appears well suited to the subject project. The disadvantages include the relatively long duration, the intensive use of labor, and the degree of site disturbance. As open excavation to depths of 25 feet or more is more difficult and expensive and would involve the demolition of the on-site building, this alternative is not considered appropriate for the subject site. 6.3 ON-SITE INCINERATION On-site incineration involves excavation of the contaminated soil, followed by incineration to volatilize the hydrocarbons. The 6-3 ~JLC ~ . --::.~ ,>-~- ~;''\ (c~9~,- :~ ~=;) iJ ~ _ .;.....=:>, -:::=: ~ volatilized hydrocarbons react with air at high temperatures, and oxidize to produce water and carbon dioxide. The advantages of this remedial alternative are the rapid and complete removal of contaminants. Although the option is believed to be feasible, few portable systems are available at this time, making implementation difficult. Depending on the system chosen, air quality considerations may make this option inappropriate. Another disadvantage is the relatively high cost associated with deep soil excavation and remediation. Based on cost and availability, on-site incineration has not been considered further for implementation at the subj ect site. øÞ!-áA'!- ./k cø6 J tZutiÃaIj : 6.4 ON-SITE OXIDATION On-site oxidation refers to those technologies which utilize oxidizing agents to break down the hydrocarbon chains. Hydrogen peroxide and chlorine are the most cornmon oxidizing agents used. Case histories indicate that hydrogen peroxide can efficiently cleave the aromatic ring structures and oxidize the by-products to carbon dioxide and water. The advantages of this technology include the rapid treatment process (several days) and low cost. Disadvantages include uncontrolled reactions which may evolve intermediate by-products, causing potential air pollution problems. Synthetic polysilicate materials have been used on a limited scale in conjunction with hydrogen peroxide for treatment of soils contaminated with petroleum hydrocarbons. Some of these technologies are currently being researched and are being reviewed by state regulatory agencies, The advantage of using synthetic polysilicates appears to be the availability of active sites where hydrogen peroxide and petroleum hydrocarbons can react until complete decomposition to carbon dioxide and water is achieved. The kinetics of these processes are not yet well known. 6-4 ,i~~-;(f)ì@\:lK?lF~ ., '\ó.J c= \,:;::;/ \'~) U ~ U I L The method of implementation of these technologies is similar to the on-site aeration discussed in section 6.2 in that the contaminated soil is excavated and spread over a treatment area. The oxidizing and synthetic polysilicate mixtures are mixed into the soil using suitable agricultural or earth-moving equipment. The oxidizing agent is applied periodically and soil samples are collected for analysis to assess the efficiency of the process. The efficiency of oxidation technologies indicate that BETX and TVFH concentrations of 10 and 100 mg/kg, respectively, may be achieved. Oxidation technologies may not be capable of reducing BETX and TVFH concentrations significantly below these levels. Based on the relative inf~ncy of this technology, the possible incomplete removal of BETX and TVFH, and the disadvantages of deep excavation, on-site oxidation has not been considered further for implementation at the subject site. 6.5 IN-SITU TREATMENT In-situ treatment involves reducing BETX and TVFH concentrations without excavating the soil, This technology is based on the interaction of fluid, usually air, moving through the soil pore space. The success of this technology, therefore, depends primarily on the hydraulic conductivity of the soil. For soils with high permeability, in-situ treatment may be appropriate for the removal of VOCs by forced ventilation. The most common in-situ remediation technologies include bioremediation and vapor extraction. Bioremediation has been found to be an effective method of treating soils that contain light fractions and higher boiling point petroleum hydrocarbons. However, this technology has been successful primarily for above- ground as opposed to in-situ remediation. The effectiveness of in- 6-5 '-::=::~ ~r= ~ I·':;:' \'/ ré:3? ~ I "= '."~, " ~~ G~ ~\'-:-:-_1) ~ Ú ~ :J ! =--=. c..: \' situ remediation would depend on contact between the solution phase and the contaminated soil. The cost for in-situ bioremediation is estimated to be $70 to $130 per cubic yard. In-situ vapor extraction involves the passage of air through the soil pore space under positive or negative (vacuum) pressure to the system. The hydrocarbons present in the soil will gradually enter into the vapor phase as uncontaminated air migrates through the soil. The cost for in-situ vapor extraction is estimated to be $50 to $100 per cubic yard. Based on the current understanding of subsurface conditions, the sandy soils underlying the site, and the volatile nature of the contaminants, in-situ ventilation appears to be suitable for implementation at the site. 6.6 NO ACTION Under this alternative, no attempt would be made to reduce BETX and TVFH concentrations. Because of the areal and vertical extent of the contaminated soil profile and the presence of high concentrations of TVFH and BETX in the soils, the no action alternative is unlikely to be acceptable to the regulatory agencies and has not been considered further. 6,7 SELECTION OF REMEDIAL ALTERNATIVE In order to select an appropriate remedial technology, the available alternatives were qualitatively ranked according to several factors pertaining to the applicability of each to the site-specific conditions. This ranking is summarized in Table 5. Site disturbance is generally considered low to moderate for all containment and in-situ treatment technologies. Technologies requiring excavation are considered to cause high disturbance. The ranking system for liability is based on the anticipated residual contamination and potential exposure during remediation. The ranking system for cost is based on estimated costs per unit volume 6-6 ((~I~/;~@\;¡@lF!C- ,~--:-j!c\L~,,-:::J) 'I c:--') i' :L- . \.~_____J L==:J '--_ ,--_ L.: ..:.=/ ~ ~ - ~ of soil remediated. The approximate range of costs, corresponding to the low, moderate, and high categories are less than $100, between $100 and $250, and greater than $250 per cubic yard of soil. In addition to the criteria presented in Table 5, other site- specific features also have a major impact on selecting the most appropriate remedial alternative. These site-specific features are listed below: o soil remediation to a depth of approximately 120 feet below the ground surface may be required. o The impact of any remediation activities on the structural integrity of the building must be considered. o Remediation of potentially contaminated soil beneath the building may be required. In general, the selected remedial technology should minimize site disturbance and effectively remove and remediate theVOCs in the subsurface soil based on the above site-specific criteria. In-situ treatment by vapor extraction appears to be the most appropriate technology in terms of the sandy nature of the soils and the volatile nature of the hydrocarbons detected. 6-7 rr= (?"~ ~ \\ 7 (r~; c:¡¡ ~ ~ - ~ 0c2! U ':::!-J L -=.~ 'i 7.0 CONCLUSIONS Based on the data generated during the site characterization and the development and evaluation of remedial alternatives, the following conclusions may be made: o The site is underlain by predominately silty, well- graded sand to about 90 feet below grade. From 90 feet to the total depth investigated, the soils consisted of poorly to well-graded sands and gravels. No water was encountered in the borings to the maximum depth investigated. o Hydrocarbons extend vertically to the total depth investigated (140 feet) ; however, the concentrations of TVFH (7.4 ppm) and BETX (0.3, 0,5, and 0.2 ppm) at this depth may be permissible (Table 4) when considering site-specific conditions (i.e., annual precipitation, depth to ground water, etc, ) . o Assuming that the subsurface stratigraphy is relatively homogeneous laterally, it appears that the areal ~xtent of hydrocarbon contamination extends radially between 40 and 60 feet from Boring B-2. o Based on the distribution of TVFH and BETX, shown schematically in Figure 4, it is likely that the contaminated soil profile extends beneath the building located east of Boring B-2. o LUFT Manual procedures were utilized to estimate the maximum permissible concentrations of TVFH and BETX (Section 5,3) and to provide the rationale and guidance for remedial action requirements. o A no action alternative was considered; however, the elevated concentrations of hydrocarbons in the soil profile and the lateral and vertical extent of the contaminated soil profile preclude this option. o It appears, after review of numerous remedial alternatives, that in-situ soil venting by vapor extraction is the most appropriate method of mitigating soil contamination at the site. The sandy nature of the soils, the volatile nature of 7-1 ',,~ ¡¡= n CC3:' \V7 CC3:' 'ij rs r,,~~[,~~) V ~ LJ ~ " L .~ the compounds in the soil, minimal disturbance, and moderate cost support selection of this remedial alternative. site the Implementation of in-situ soil venting by vapor extraction is commonly preceded by a field pilot test, the results of which are used for full-scale implementation. Based on available site- specific information and experience in similar projects, the mitigation process is expected to require 3 to 6 months to complete. However, performance monitoring during remediation would enable better estimates of the project completion schedule to be made, It is suggested that the City of Bakersfield inform Kern County Heal th Department personnel as to the results of this investigation and the proposed course of action. Approval of Kern County Health Department and other regulatory agencies should be obtained prior to initiating design and installation of any remedial alternative. Respectfully submitted, GEOSYSTEM CONSULTANTS, INC. 1c; ~ W- Jay Dean Carter Senior Project Geologist ~ Miller Senio Project Engineer :Z ~~:: Mohsen Mehran, Ph,D, Project Manager (CGWP No. 189) 7-2 ~ ',~~~~~)~'\ rr-~ ~ --== ~ - ''"--... -- ,-~.;:) '. REFERENCES City of Bakersfield, Community Development Division, August 31, 1988, "Request for Proposal for Site Characterization at 1600 East Truxtun Avenue." Geosystem Consultants, Inc., September 13, 1988, "Proposal, Site Characterization and Remedial Alternatives Development, Future Homeless Shelter Property, Bakersfield, California," submitted to the City of Bakersfield. National Weather Service, Bakersfield, California, December 1988, personal communication. William H. Park and Associates, August 5, 1988, letter to George Sweet. State Water Resources Control Board, May 1988, "Leaking Underground Fuel Tank (LUFT) Field Manual," prepared by Leaking Underground Fuel Tank Task Force. (N, ~ (êì (Q.'J \\11 00, c::;-;= -= i;". ~ :( q c= i)~\ '1 \.:::::'\ I; =, -~J L........,. ......~~ \:::::..,' J 1...0 ~ .-==:J ~ '.~ TABLE 1 SUMMARY OF PREVIOUS SOIL QUALITY DATA (All units are mg/kg . parts per million) ETHYL ISOPROPYL BORING NO. DEPTH TVFH(1) BENZENE BENZENE TOLUENE p,m'XYLENE o'XYLENE BENZENE (feet) TH No. 1 5 4,600 62 96 270 510 280 42 25 380 3,3 11 20 43 25 3.6 TH No. 1A 45 12,000 320 380 1,700 1,700 830 71 65 400 3.5 13 21 56 31 4,5 85 510 1.7 11 11 48 32 5.6 NOTE: 1) TVFH Total Volatile Fuel Hydrocarbons (~ rc rF)\ CQ? \\r¡ ~ ¥ IlL I~/ ~ \~lS~~ ìJ ~ U c::':::u\:;,: TABLE 2 RESULTS OF PHYSICAL SOIL TESTING USCS MOISTURE DRY BORING NO. DEPTH DESIGNATION(1) CONTENT DENS ITY POROSlTy(2) (feet) (%) (lb/ft3) (%) B-2 20 S i l ty sand 6.15 109.472 33.8 30 Si l ty sand 7.76 111 . 164 32.8 40 Silty sand 8.50 125,172 24.3 60 Si lty sand 11. 56 106.714 35.5 80 Silty sand 5.46 106.832 35.4 B-3 30 Si l ty sand 6.56 116.997 29.3 B-1, 40 Si l ty sand 10.83 110.650 33.1 60 S i l ty sand 14.74 116.725 29.4 80 Si l ty sand 6.67 107.763 34.8 I, I NOTES: 1) Unified Soil Classification System (USCS) designations were determined by laboratory personnel. 2) Porosity was calculated assuming a specific gravity of 2.65. , ~ ! § (éJ) (~ \' /7 (::~ c:;-;=o - -:ì -:. -: C1 I .:::::, .I( '-----. r ==" \~'J~.:::o\¿ ~ L; ~ IJ .=cJ\~,. TABLE 3 RESULTS OF CHEMICAL ANALYSES (All units are mg/kg . parts per million) ETHYL BORING NO, DEPTH TVFH(1) BENZENE TOLUENE BENZENE XYLENES ( feet) B-2 5 530 0.09 0.3 ND<0.05(2) 1.3 10 23,000 4,6 160 53 92 20 40,000 120 1,500 220 550 30 19,000 96 930 110 290 40 4,000 84 260 99 160 60 11 ,000 58 460 52 100 80 5,200 15 . 100 24 49 100 20 1.1 2.5 1.9 0,6 120 6.1 0.1 0.5 0.1 0.1 135 14 ND<0.05 0.3 0,5 0,05 140 7.4 0.3 0.3 0,5 0,2 B-3 5 6.3 ND<0.05 ND<0.05 ND<0.05 ND<0.05 10 2.3 0.3 0,8 0.3 0,05 20 5.7 1.0 4.3 1.3 0.3 30 8,700 22 120 35 69 40 9,300 43 130 38 68 60 2,300 13 52 15 22 80 29 0.5 0.9 0,7 0,5 100 3.9 0.5 0.8 0.6 0,2 B-4 5 1.300 ND<0.05 6.2 ND<0.05 8.3 10 860 0.2 0.4 0.2 3.7 20 3,100 6.3 41 21 32 40 9,300 42 290 76 120 60 7,200 38 120 59 93 80 6,300 33 190 63 84 100 6,100 21 130 51 65 B-5 5 3.0 0.8 0.7 ND<0.05 0.3 10 1.9 0,7 0.4 0,6 0,2 20 28 1.1 1.3 1.1 1.2 30 1.0 ND<0.05 1.5 0.8 0,2 40 1.0 1.3 1.2 0.6 0.1 60 2.9 ND<0.05 ND<0.05 ND<0.05 ND<0.05 80 1.0 0.4 1.3 0,3 0.2 90 2.5 0.5 1.3 0.4 0.3 100 1.8 0,1 0.5 0.7 0,2 120 ND<1.0 ND<0.05 ND<0.05 ND<O,05 ND<0.05 (@~(Q)~W~lT[~~Ð TABLE 3 (Continued) ETHYL BORING NO. lli!..!i TVFH(1) BENZENE TOLUENE BENZENE XYLENES (feet) 8-6 5 10 1.5 6.9 1.2 0,5 10 2.1 0,1 0.5 0,4 0,3 20 ND<1,O ND<0.05 ND<0.05 ND<O,05 ND<0.05 30 ND<1.0 ND<0.05 ND<O,05 ND<0.05 ND<O,05 40 1.3 ND<0.05 0.05 0.6 0.5 50 1.8 0,1 0,1 ND<O,05 0.07 60 1.0 0.2 0.2 0.2 0.1 70 1.3 0,1 0,4 0.6 0.6 NOTES: 1) TVFH = Total Volatile Fuel Hydrocarbons 2) ND denotes Not Detected at detection limit indicated. ((2; I~ (R\ (~ \/1 ~ =1' I~ IS [CI ¡-:-: ~JL£~~. Li ~_ '-'=,J\~~. .- TABLE " LEACHING POTENTIAL ANALYSIS FOR GASOLINE USING TOTAL PETROLEUM HYDROCARBONS (TPH) AND BENZENE. TOLUENE. XYLENE. AND ETHYLBENZENE (BTX&E}(1) SITE FEATURE Minimum depth to ground water from the soil sample (feet) Fractures in subsurface (applies to foothills or mountain areas) Average annual precipitation (inches) Man-made conduits which increase vertical migration of leachate Unique site features; recharge area, coarse soi I, nearby wells, etc. SCORE 10 PTS IF SCORE(2)CONDITION IS MET >100 10 None 10 <10 10 None None SCORE 9 PTS IF SCORE(2)CONDITION IS MET SCORE 5 PTS IF SCORE(2)CONDITION IS MET 9 51 - 100 25 - 50* Unknown Present 10 . 25 26 - 40** Unknown Present 9 At least More than Column Totals (total points) + + :: 30 18 o 48 Range of Total Points Maximum allowable B/T/X/E levels (ppm) Maximum allowable TPH levels (ppm) 49 pts or more 41 - 48 pts 40 pts or less 1/50150/50 1,000 .3/.3/1/1 .3/.3/.3/.3 10 100 * If depth is under 25 feet, score ° points, ** If precipitation is over 40 inches, score 0 points. NOTES: 1) Reference: State ~ater Resources Control Board (May 1988), According to the LUFT Manual, the above table "was designed to permit estimating the concentrations of TPH and BTX&E that can be left in place without threatening ground water, Three levels of TPH and STX&E concentrations were derived (from modeling) for sites which fall into categories of low, medium or high leaching potential. To use the table, find the appropriate description for each of the features. Score each feature using the weighting system shown at the top of each column. Sum the points for each column and total them, Match the total points to the allowable BTX&E and TPH levels," 2) Scores assigned by Geosystem according to site'specific conditions, ~,~;~.' I~Ç rf)\ (¿~'ì ~"r¡ (01 [l--r~ I~,.C:] r.~Þ1 \\,:::11 L-=0~~ ì[ ~. ~J 1\(;/ .. i!c TABLE 5 INITIAL SCREENING OF REMEDIAL TECHNOLOGIES RECOMMENDED FDR REMEDIAL PROVEN SI TE REGULATORY TYPE FURTHER TECHNOLOGY TECHNOLOGY DISTURBANCE REQUIREMENTS LIABILITY OF SOIL COST EVALUATION No Action Low No Containment: Capping Yes Low Low Mod. High All Low No In-situ Vitrification No Low Mod. Low Mod. Mod. . High All Mod. No Fixation No Mod. Low Mod. Mod. High Granular Low No Physical Barriers Yes Mod. Low Mod. Mod. All High No Hydraulic Barriers Yes Low Mod. Low Mod. Mod. All Low No In-situ Treatment: Soil Flushing Yes Low Mod. Low · Mod, Low Mod, Granular Mod, No Air/Steam Stripping No Mod, High Low - Mod. Low Mod. All Mod. No Bioremediation Yes Low Low Low Mod. Granular Mod, No Soi l Venting Yes Low Low · Mod. Low Mod, Granular Mod, Yes Excavation and On-site Treatment: Aeration Yes High Mod. · High Low All low No Bioremediation Yes High low - Mod, Low All Low No Thermal Desorption Yes High Mod. Low . Mod, All Mod. No Incineration Yes High Mod. High Low All High No Steam Stripping No High low Mod. low Mod, All High No Soi l loJashing No High Low Mod, Low Mod. All Mod, No Excavation and Off-site Yes High Low Mod. All High No Disposal .(.=:::~; 11:::1 I ~~', «:'~\l! (C~:?'=1"I:"] I, c~J I [,\,;.'i ' II 'I __, I ( )) '-) ( ..) _, I \\1 \:.::, ~C']\:,/ '02. \:::::'? ~l :/1 .. FIGURES ~~ !r= tr:.\ "-" \\ ,7 Cé3' c::;- r= ¡;\ ¡. I ( c:c¡ I' ;= Ii ( ) I) ~ \/ ,.;--, ì I¡r 'I'S 1;\ I,' : \~S·J ~ \~) ~_ ~ ~ ~ - . u ~ ~" 110378 . ~ '\,', , "~: -/ _o11'~~)iì=-'l'i=-=4'1'= '~JJr=-J' F illll¡ I Ii i 'l'lll . j ~~::. --.:.::::--¡L ~ . 1 ",{~û' \"/,:::11 / I I l t:~ I I ji I! 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I 'II Pc," ----"11 " ;11 J~ -~DDDW' W_ Scb I" I_~.-, ,- fíl- r== :' Un,oll C'4t:",k'f/Ic:::JI I .b IJ ~...~, I, i_, !i II :1 ,µ: _~_.J!:;l/¿ 11 IL~~[JD I \" L L J! i IUL l I ,:', 1_ il,2JO[JD[IDO[JD[][-V-' ¡\:;lF1J;r~\~/:~N'l' , 1,ID~" l lF'11[~~lr';:~ .,:' AVE ' uQDDDunLJDDDDO "çiÚ ¡11;I:B:~ ~ ål~"",I,I. _ '" d!: I ~ llJu II ~']l' ~J[lnll 'I' ,lnODDO[ ¡ i( 71 !It"i ~'-~ ~::: ~ ~ ~ W II i _..I _I> ~I ~-=:J ... _ !J~L.~ ' - A' -IrJ : ç;i ~~ ,;,:¡ -~ ~ å It M lo"Q , " :. I, ~I ' III I-Ir-I II-]"II-II'--/"~~~, ! J ," L" iii I '\111 - -- - II¡ II I I II LJW-!!· I I I ,j l --OJ Lr,U.~L _, . J ~'/~~\U o;'o,:}=~_,~,_~=,ft=~_.~._,~:~=.-_:-_,==, f}RljN,?"'GE:, .~386 :'::r'li \~-ì-;-'í'f = ----1':-" '",.~Î--~'-~:J8ã'-"":·~~'~~~~-~3¡;'7fo .. : II ~- ~ I! I IUL¡( 1 ~~ n'li=r~"o'=-=" If=ó:sewJgc ~I ~, .JI [I I J'I~;';',: . L.__.L.__..:...JL_ ~ Disposal ;, -=ll Jf=--cl II ^--00 Iii ~~DL ~!l--'--I" "0__, ¡ISeWdge , , II I ,\ Ii f.- "-..-, . II" ,In,oc^"o, \~l (,ULl0. , ' , . '--" ( ....,_.' Q:;ADRANGL': lOCATIOt. [:',J~ FIGURE 1 I o 2000 . 4000 FT SITÉ LOCATION MAP SCALE REFERENCE U.S.G.S. 7.5 MINUTE SERIES (TOPOGRAPHIC) OIL CENTER AND LAMONT QUADRANGLES) DATED PHOTO REVISED 1968. SCALE = 1:24)000. FUTURE HOMELESS SHELTER PROPERTY CITY OF BAKERSFIELD , BAKERSFIELD, CALIFORNIA 1954, @J~(Q)~W~u~U¥Ð o o I o "' C\ CO CO ~c: ;:~ .,;::; c::;¡ OZ ~~ 00 !i!~ ~i ,,~ '" t ~ ~ /(.r-- lfë o m ~ o I i SOur HERN ~I Jr PACIFIC RA .. ,...__~~ ILROAO , I" I ~ """-. I SEE FIGURE 3 ~I I 1(~Ir"""-. I I ~__ I n I ~--~ 1(, I .l}~: --~__ I I ~-- I I METAL -- ~l : ¡u'LDING ~ %--t T ! I ¡ 1530 E. I ~,--- 3"'''"' ,,<. --. . t I "'EO j "''' ì ~ l ~ 1 ¡FRAME --CONE BLOCK OFFICE OFFICE ,\BUILDING WALLS L 1600E TRUXTUNAVE ------ J J" J 1610 E ,TRUX TUN AVE, r<-~[88: ~11i{fITfo<mE .--¡-1-'C,.-Il-Il-.-Il-"-.,r------ POWER LINES~ __ E-E E IE' EDGE OF ROAD~ --- METAL BUILDING OFFICE !Ð-PAC I FIC BELL MANHOLE '-~ EAST TRUXTUN AVENUE EXISTING CURBS AND GUTTERS ~ )) f;¡... sf:J :f~ £Cf) r seA LE I o 50 I 100 FEET . ~ SOIL BORING LOCATION [-==:J EXISTING BUILDING FIGURE 2 SITE PLAN FUTURE HOMELESS SHELTER PROPERTY CITY OF BAKERSFIELD BAKERSFIELD, CALIFORNIA @~(Q)~')f~u~[Mù · ; 11Q318 J r-------------------------ì j I I tl~~ : I 1 I DISPENSER ISLAND (REMOVED) I FORMER I I I '" o o I o ~ (I) (I) o zc: ;;~ <::> c:=> az ".>- ",<Xl aD ~ð ~c: I"- u~ ::! iJ " , ~ ! 2:: "" 5:>- "<Xl '" o 8-4 ì I I I I I I I II : I I L_~ L_.....t :ni NOo" 1 1 alzl ~I .1 l'H !/o. IA L______________________ ~B-6 I I J I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I t I I I __J LEGEND 5 SOIL BORING lOCATlDN D EXISTING BUILDING SCALE . I o I ZOFEET 10 FIGURE 3 PARTIAL SITE PLAN FUTURE HOMELESS SHELTER PROPERTY CITY OF BAKERSFIELD BAKERSFIELD, CALIFORNIA ~~(Q)~W~u~ú¥iJ SCHEMATIC SOIL QUALITY PROFILE TVFH vs. DEPTH (ALL UNITS IN MILLIGRAMS PER KILOGRAMS, mg/kg) 8-6 8-5 8-3 8-4 8-2 0 10.0 3.0 2J 1.9 .... --7 , 20 <1.0 ( 28 '-- fD~ <1.0 LO 19,000 00 ~i 1.3 1.0 40 ~ 1.8 CI> ~ 2.9 11,000 60 I~ 0 1,3 r' 25 \ (1.0 1,0 ....7 5200 ,,- ,; ....'7 1.8 3.9 .I.EIiEfiQ. D D APPROXIMATE CONCENTRATION >IOpOOmg/kg :gg~m Ikq -1000- CONTO~ INmg/kg 9 CONCENTRATION BOUIIDARY - - - - INFERRED D 1000- D 10- Tv 10nOO-/kg 100 Ik -40,000 FH CONCENTRATION '" n~ mg 9 AT SAMPLE DEPTH m ~ o SCHEMATIC GEOLOGIC CROSS SECTION 8-6 8-5 8-3 8-4 8-2 80 100 ...........-. .......... .......... '.. .. .............................. ........... ......... ... ......................J... .................................................................·..··.··.·..·..·..-.I~.... .. .... ......... .......................:...........:...........................................:......:...............................",.......... ··......GRMi ¡;¡............ ..............................................................:..................................................................................................... ................................................:............................. ··<.·············.·········.·····.·····.··W.k.·.·······....... ....>..................................................................................~.....~...................... 1IIItitlltlll!!I~'~ ~ 120 140 ~J t:illJ GRAVEL II SILTY SAND ~ CLAYEY SAND LITHOlDGIC -7- :W_Y E:íJ SAND NOTE 1) BORINGS ARE PROJECTED ON ONE SECTI¥tAi'fIfiRt.o ¥~§JtflaiWff1~q~ll:~HY IS RELATIVELY HOMö'ó'EN!Ö~SI 2) M!~IDE'ótt~M ~~~~ AT TCÇ¡¡eLOCAi'IÓN. OF THE BORING, '~ÒSar~dQbM~~:~J.2~-rEDI BETWEEN BORINGS 3) TVFH: TOTAL VOLATILE FUEL HYDROCARBONS SCALE HORIZONTAL AND VERTICAL 1....--- o 20 I 40 FEET FIGURE .. SCHEMA TIC SOIL QUALITY AND GEOLOGIC PROFILES FUTURE HOa.taESS SHa TEA PROPERTY CITY OF IJAKER8FIELD BAKERSFIELD; . CALIFORNIA @~(Q)~W~1~[f¥j] ¿ ,~ APPENDIX A BORING LOGS . :~ I? f1\ ~ \\17 ~ "P I L-, \~"1 ! E l~~¿J ~ 'ú ~ J L.Ç .. í w u BORING NO. B-2 z..--.. SHEET 1 OF 3 f- «I- w ü 1-0 W Z ~o 4- 0----. 'f) l1... W w FIELD ENGINEER J. Carter DA TE BEGAN November 2, 1988 w (f) « E ææ -.J -.J DA TE FINISHED z Wo. w CL U CL EDITED BY J. Carter November 6, 1988 0:::0.. za... :2 (f) 0 CHECKED BY P. Miller GROUND SURFACE EL. NA I '-' 2tIJ <C 0::: t-- :::::> 1-3'; (f) :::::> Cl. CASING ELEVATION NA CL Z «0 w I CC:-.J 0 t-co ~'-' w DESCRIPTION a... 0 SM Medium dense, brown, fine to coarse-grained SILTY SAND. Dry, concrete debris. (Fill) 250 22 480 2 - very loose, predominately fine to medium-grained sand. 10 - very dense, light brown. Moist. ~ 520 66 20 --j ~ - light brown, some fine-grained gravel. >500 2/6' 30 I I r ·1· - trace silt, trace fine-grained gravel. >500 55 40 "I' . . L NA 62 some fine-grained gravel, some white mottling CLIENT PROJECT NO. LOCA TION CITY OF BAI<ERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA ----w¡:~ (ñ--" \\ /7 0 ': r I c=' ,-;- ,- \.~ ":! .~~ !- : -. ~ .:- , :.^ J 1_-=-= ~ w u BORING NO, B-2 z~ SHEET 2 OF 3 I- «I- w C? 1-0 W Z ~o u.. 0......... (/)u.. W w FJELD ENGINEER J. Corter DATE BEGAN November 2, 1988 w (f) « E cr a::: .....J .....J Z lu '-LJ Q.. U i:L EDITED BY J. Corter DA TE FINISHED November 6, 1988 a::: a. :z a.. ¿ (f 0 CHECKED BY P. Miller GROUND SURFACE EL, NA I a.o « a::: I- :::> '-" r= (f) (f :::> a.. CASING ELEVATION NA <:3 Q.. Z ~o W I ¡-..J 0 wCD z....... lLJ DESCRIPTION 50 a... I . . . 1 . . . - redbrown. Moist, some clay, micaceous. >500 67 60 r 70 - decreasing cloy content. sc Very dense, light brown, fine to coarse-grained CLAYEY SAND. Moist. 80 225 75/6" j ~ j 90 I L.. L sp Very dense, light brown, fine-grained SAND. Moist, some silt. Moderately to well cemented, micaceous. 220 100 10 CLIENT PROJECT NO. LOCA TI ON CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA ~ \'-C:~ [)), '\ ~ \~\L1' (C"' ~Ir' rr== c;\ ,'-:-' ,l c:¡""'= J ~ \ '--., '" !] : ~ I, \, ' , '.::>J! ¡ 1 '·S ~ "2) ~ L'==:: ~ \'; '.. i .- w u BORING NO. B-2 2:.---, SHEET 3 OF 3 t- «I- w C) I-a w z ~a ~ 0.---, If) lL. W w FIELD ENGINEER J. Carter DA TE BEGAN November 2, 1988 w (f) <{ E 0:::0::: .....J .....J Z we. w Q... U CL EDITED BY J. Carter DA TE FINISHED November 6, 1988 O:::e. 2:0... 2: (f) 0 CHECKED BY P. Miller GROUND SURF ACE EL. NA I '-" º(f) <{ 0::: t- ::J 1-3: (f) :J CL CASING ELEVATION NA Q... Z «a w I 0:::-1 0 r-co ~'-" w DESCRIPTION 0... 100 I' . . . ' . sp ..... . 110 sw Very dense, light brown, medium to coarse-grained SAND. Moist. r j 300 f-120 t L 94 o 0 0 0 Very, dense, brown, fine-grained GRAVEL with medium to coarse-grained SAND. Moist. gp 7 112 o 0 0 0 o 0 " 0 o 0 0 0 " 0 0 0 " " " n .., " " 0 " " " " o 0 0 0 o 0 " " o " " " .., 0 " " " 0 0 " 130 Very dense, offwhite to brown, fine to coarse-grained GRAVEL. Moist, subround, igneous origin. 35 112 dense, brown, fine to coarse- rained SAND. Moist. 140 TOTAL DEPTH = 140 FEET ~,IOTES: 1) Drilling by ABC Liovin Drilling Company, Signal Hill, California, using a Failing F -10 drilling rig with 8-inch diameter, hollow-stem augers. Due to sail conditions, air rotary drilling with a 6-inch tri-cone bit was also utilized. 2) See Boring Log Legend for explanation of symbols and terms. J) Borings backfilled to surface with a 7-sack cement/bentonite grout with 3/8-inch rock. CLIENT PROJECT NO. LOCA TION CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA .~ ,__ (~(§).~ \;·/7~'¡I!' ; '-:' ;' (_-'~\ ,"_ -_.' I 1- \,',:;"..;: L,_, ,~::::') c:.::! ìj-,::'J 'J :~ oJ,~ ~ w u BORING NO. B-3 z_______ SHEET 1 OF 3 I- « f- W G f-o W Z ~o LL 0.--... V)LL W W FIELD ENGINEER J. Carter DA TE BEGAN November 3, 1988 w U1 «E 0:::0::: .--J .--J Z Wo.. w Q U Lï: EDITED BY M. Dahl DA TE FINISHED November 3, 1988 Q:::o.. zo... 2 U1 0 CHECKED BY P. Miller GROUND SURFACE EL. NA I '---' 0V) « Q::: I- :J 1-- 5: U1 :J Q CASING ELEVATION NA Q Z «0 W I a:-.J 0 l-aJ ~'-' w DESCRIPTION ú... 0 srfl Loose, brown, very fin e to fine-grained SILTY SAND. Dry, micaceous. 50 9 Medium dense, graybrown. Moist. 9 22 sw Medium dense, brown, fine to medium-grained SAND. Moist, 10 very micaceous. 178 48 20 ~ I j 320 I 96 .30 I Dense, gray, very fine to fine-grained SILTY SAND. Moist, micaceous. sw Dense, redbrown, medium to coarse-grained SAND. Moist. SM Very dense, graybrown, very fine to coarse-grained SILTY SAND with fine-grained gravel. Moist. I 1350 40 ~ ] J I 64 - brown. 50 CLIENT PROJECT NO. LOCA TlON CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA (0 rr= (~ (é3' \\/7 rê3' ¡r I , c;-,~. \ =:-¡ i r \ \ ~ ,::--;, \ (.":.>' ,I : ,- !, . "-'-::'J C== "::::-:::/~) tJ ~0 t..J \...::::::'~ \_ ,. { " w u BORING NO. B-3 z............ SHEET 2 OF 3 f- <{I- W C) 1-0 W Z ~o lJ.... 0............ If) l.J... W w FIELD ENGINEER J. Carter DA TE BEGAN November 3, 1988 w VJ « E Q:::Q::: ....J ....J Z Wo.. w CL u tL EDITED BY M. Dahl DA TE FINISHED November 3. 1988 IYo.. za.. :2 VJ 0 CHECKED BY P. Miller GROUND SURFACE EL. NA I '--" ºUJ « 0::: I- ::J 1- 3: VJ ::J CL CASI N G ELEV A TI ON NA CL z <{a W I 0:::-1 0 I-co ~'-' w DESCRIPTION Q.. 50 - some clay content. >500 46 Dense, redbrown, fine to coarse-grained CLAYEY SAND. Moist, some silt. 60 70 ~ ~ 80 ~ sm Dense, redbrown, fine to coarse-grained SILTY SAND. Moist. 300 36 - increase In silt content, trace clay. sw . .. . - becoming cemented, drilling very difficult. Very dense, brown, fine to coarse-grained SAND. Moist, micaceous, cemen ted. 90 190 80 100 CLIENT PROJECT NO. LOCA TION CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA .,~~ ~C~ i:~\ § '\I ~~i ~~ . = ~\~., }' I I.LJ 'u BORING NO. B-3 :z SHEET 3 OF 3 f- «0 w ~ 1-0 W Z ~o LL- 0---.. (/)u... w (f) W FIELD ENGINEER J. Carter DA TE BEGAN November 3, 1988 w « E c::C:: -1 -1 Dahl DA TE FINISHED 3, 1988 z w (l.. u G: EDITED BY M. November - wa. zo.. :2 0 0:: a. (f) CHECKED BY P. Mill er GROUND SURF ACE EL. NA I '--' 2U') « a:: 1- :J 1-3 (f) :) (l.. CASING ELEVATION NA a. z «0 w I C::..J 0 !-(D ~'-' w DESCRIPTION I 100 0.. I TOTAL DEPTH = 100 FEET 1 I No water cncoL.:ntered while drilling. NOTES: 1) Drilling by ABC Liovin Drilling Company, Signal Hill, California, using a Failing F-10 driiling rig with 8-irlch diameter, hollow-stem augers. 2) See Boring Log Legend for explanation of symbols and terms. I 3) Borings backfilled to surface with 0 7-sack cement/bentonite grout with 3/S-inch rock. I I I I I I I \ ~ CLIENT PROJECT NO. LOCA TION CITY OF BAI<ER~,ElsLD____ 88- 250 B_6.KERSFIEL~ CALlFORN!A ,;~ ~c /(~ì ~ ~v7 (é:":;;::' =1 r Ire r;-, '-:- I r~1 'j \.:.:::...--.." ~ I ~ ,~c'J LÇ.;J) ,,:::J ...! <::2} 'J c':= '.':.. . ~ w u BORING NO. B-4 Z . SHEET 1 OF 3 r- <iÇ' - - W t-' """'0 W Z ~o lJ.. 0______ (f) u.. W w FIELD ENGINEER J. Carter DATE BEGAN November 3, 1988 Lc.J (J1 <{ œa::: -1 -.J Z l.LJ E w 0.. U i:L EDITED BY M. Dahl DATE FINISHED November 3, 1988 - 0.. ZO- O::: 2 (J1 0 CHECKED BY P. Mill er GROUND SURFACE EL. NA I 0.. O(f) <{ a::: '--' r- ::J P:s;: (J1 ::J 0.. CASING ELEVATION NA 0.. « z 1::::0 W I I--l 0 wOO z'--' w DESCRIPTION Q... - 0 ml Stiff, brown, very fine-grained SANDY SILT. Dry. 260 24 ~ - gray. - sm Medium dense, gray, fine-grained SILTY SAND. Dry. · , , 300 28 ~sw · . . . Medium dense, brown, fine to coarse-grained SAND. Moist. 10 - · . . . · . . . · . . . · . . . · . . . · . . . . . . · . . . - · . . . · . . . · . ' sm Dense, brown, fine to coarse-grained SILTY SAND. Dry. I 400 47 ~ I- 20 - , . - - - very dense, some fine-grained grovel. NA 82 ..... No recovery. - 30- - - . , . . - trace silt, trace fine-grained gravel. 420 103 ...., SM 40 - I I I- - ¡ - increase in silt content. - 50 CLIENT PROJECT NO. LOCA TION CITY OF BAI<ERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA ~~~~ re 'ré5) CC? \'f (C.è ': r ' '-:---:- -:oj 1,---" I" -~) ¡ '~" I' ,'-- . <'::'J~\~ ~,' , ~ ~ ~=:"". ~. w U Z..--. f- «I- w '-' 1-0 W Z (/)0 lL.. 0..--. üiu... w w (f) « E 0:::0::: -.J Z W w G... U 0::: Q. Lc:L :2 (f) I Q. 2(/) « '-" f- ~ 1-3: (f) ~ G... Z «0 W I e:-.J 0 ...JCD z'-' w 50 c:L BORING NO. B-4 SHEET -L OF ~ w FIELD ENGINEER J. Carter ---1 G:: EDITED BY M. Dahl ~ CHECKED BY P. Miller Cl.. DATE BEGAN November 3, 1988 DATE FINISHED November 3, 1988 GROUND SURFACE EL. NA CASING ELEVATION NA DESCRIPTION - redbrown. Moist, micaceous. >500 55 60 70 "1 - light brown. -1 300 55 80 J J 90 sp Very dense, brown, fine-grained SAND. Dry, well cemented, micaceous. 280 NR -10 CLIENT PROJECT NO. LOCA TION CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA ~' ìc 00·]) ~ '0Il@ -: i [r= ,-:'Fi ~ ~ \;_> '0::l) lJ \2.J .J L~ ~ ". . ,.' w u BORING NO, B-4 2,.--., SHEET 3 OF 3 I- «I- w ~ 1-0 W Z ~o lJ... 0........ VJlL. W W FIELD ENGINEER J. Carter DA TE BEGAN November 3, 1988 w r.n « E 0:::0::: ...J ...J Z W 0... U G: EDITED BY M. Dahl DA TE FINISHED November 3, 1988 - wa. za.. :2 0 0::: a. r.n CHECKED BY P. Miller GROUND SURF ACE EL. NA I '--/ º(/' « 0:: I- ::J 1-3 U1 ::J 0.... CASING ELEVATION NA 0.... Z «0 w ::r: O:::-.J 0 I-CD ;;¿---- w DESCRIPTION 0.... 100 TOTAL DEPTH = 100 FEET No water encountered during drilling, NOTES: 1) Drilling by ABC Liovin Drilling Company, Signal Hill, California, using a Failing F-10 drilling rig with 8-inch diameter, hollow-stem augers. 2) See Boring Log Legend for explanation of symbols and terms. 3) Borings backfilled to surface with a 7-sack cement/bentonite grout with 3/8-inch rock. I I I CLIENT PROJECT NO. LOCA TION CITY OF BAKERSFIELD 88-250 BAKERSFIELD, CALIFORNIA /~~(~~,ǧ'0,7@iJiC(\ ~- \\~J ~ \,JJ~ ìj -0 U l' , ~~ 4, W u BORING NO. B-5 z........ SHEET 1 OF 3 f- «I- w ~ 1-0 W Z ~o u.. 0........ (/)LL. Lu W FIELD ENGINEER J. Carter DA TE BEGAN November 4, 1988 w c.n « E a::C::: .....J .....J Z wa. w (L U G: EDITED BY M. Dahl DA TE FINISHED November 6, 1988 0::: a. zo... :2 c.n 0 CHECKED BY P. Miller GROUND SURFACE EL. NA I '---" Q(/) « 0::: l- => 1-3 c.n => (L CASING ELEVATION NA Q.. Z «0 W I ~.....J 0 ....JID z......... W DESCRIPTION 0 0... srn Dense, graybrown, very fine to fine-grained SANDY SILT. Moist, micaceous. 2 42 sw Dense, brown to redbrown, fine to medium-grained SAND. Dry, <1 42 trace of coarse grains. 10 sm Medium dense, graybrown, very fine-grained SILTY SAND. Moist, very micaceous. ~ <1 20 1 36 sw Medium dense, graybrown, fine to medium-grained SAND. Moist, micaceous. 30 sm Very dense, brown, fine-grained SILTY SAND. Moist. micaceous. <1 158-6" I I l 125 40 -1 J 65 - very dense, brown, fine to coarse-grained. 50 CLIENT PROJEC- NO. LOCA TION CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA ~~(Q)§\l~lJ~[:J .- w u z,..--.. ~ ~I- W ~ ~o w Z t/)O 4- 0.----. ëñLr.... W W (f) Z <{ E 0:::D::: .-J W W Q... Ü 0:: 0.. ZCL ::2 (f) I 0.. Ot/) « '-'" f- :::> ¡:::~ (f) :::> 0... Z «0 W :r: 0:::-1 0 ~CD w......... Z w 50 a... 180 36 60 70 82 45 80 J 120 90 j 56 110 67 100 CLIENT PROJEC-:- -:0. LOCA ïJO,"'¡ BORING NO. B-5 SHEET 2 OF 3 w FIELD ENGINEER J. Carter DA TE BEGAN November 4, 1988 .--J G: EDITED BY M. Dahl DA TE FINISHED November 6, 1988 0 CHECKED BY P. Miller GROUND SURFACE EL. NA 0:: 0.... CASING ELEVATION NA sc DESCRIPTION - some cloy content. Dense, redbrown, fine to coarse-grained CLAYEY SAND. Moist. Dense, redbrown, fine to coarse-grained SILTY SAND. Moist. trace clay. Very dense, brown, fine to coarse-grained SAND. Moist, trace silt, trace clay. Very dense, brown, fine-grained SAND. Moist. micaceous, cemented. CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA (í~ E I(~ (~~!J ~~, r- ~ ~J~_I\~~ U è2 ~ ,c. sm sw sp i' W U Z,..-.. I- ~ <tl- W 1-0 W Z ~O lJ... 0______ rnlJ... W W U) <{ E 0:::0::: ...J Z W w 0... U - 0.. za... 2 ~ U) I 0.. AU) <{ '-" l- => i=:=;:: U) => 0... Z <to W I O:::...J 0 I-OJ ~--- w -100 CL sp BORING NO. B-5 SHEET 3 OF 3 w FIELD ENGINEER J. Carter DA TE BEGAN November 4, 1988 .....J G::: EDITED BY M. Dahl DA TE FINISHED November 6, 1988 0 CHECKED BY P. Miller GROUND SURFACE EL NA a:: 0... CASING ELEVATION NA DESCRIPTION ..... . ..... . ..... . ..... . ..... . ..... . '" . ..0.. . ..... . · . - - ..... . '" . .... . ... . ..... . ..... . ..... . ... . ..... . ..... . ..... . - ..... . '-110- ..... . ..... . · . . . . . ..... . · . . . . ..... . ... . ... . ..... . .... . ..... . ..' . - - La ..... . .... . ..... . ..... . ... . " , ..... . . . . . Very dense, light brown, fine to coarse-grained SAND with fine- grained GRAVEL. Dry. TOTAL DEPTH = 120 FEET 2 ~sw S6-5'1 ~ · . . . · . . . NOTES: 1) Drilling by ABC Liovin Drilling Company, Signal Hill, California, using a Failing F -10 drilling rig with 8-inch diameter, hollow-stem augers. Due to soil conditions, air rotary drilling with a 6-inch tri-cone bit was also utilized. 2) See Boring Log Legend for explanation of symbols and terms. 3) Borings backfilled to surface with a 7-sack cement/bentonite grout with 3/8-inch rock. CLIENT PROJECT NO. LOCA TION CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA (-:--. rr= ~rv ( ~ 'VI © 'l"P 12 n Iii ~lS\s)~ U ~ u l£U\3~ J 4' W u BORING NO, B-6 z,....., SHEET 1 OF 2 I- «I-- w C) 1--0 W Z t/)o lL.. 0,....., iñlL.. W W FIELD ENGINEER J. Carter DA TE BEGAN November 6, 1988 w U1 -.J « E ~~ -.J Z wa. w a... u G:: EDITED BY M. Dahl DA TE FINISHED November 6, 1988 0::: a. za.. ¿ U1 0 CHECKED BY P. Miller GROUND SURFACE EL. NA J: '-" at/) « ~ I- :J 1=3 U1 :J a... CASI N G ELEV A TI ON NA a... z ~o W :r: t-...J 0 u;CD z......... u.J DESCRIPTION 0 a.. sm Dense, brown, fine to coarse-grained SILTY SAND. Dry. <1 38 10 sw Medium dense, fine to medium-grained SAND. Dry. <1 13 20 <1 75 sm Very dense, graybrown, fine to medium-grained SILTY SAND. Dry. J j 30 <1 52 sw Very dense, light brown, medium to coarse-grained SAND. Moist. J ~ l j 40 -.J 30 51 ] ~ i I 5oLl, . . . . sm Very dense, brown, medium-grained SANDY SILT. Dry. . . . . - very fine-grained. Increase in silt content. CLIENT PROJECT NO. LOCA TI ON CITY OF BAKERSFIELD 88-250 BAKERSFIELD, CALIFORNIA ,-:.,~\ :-;::::= ¡r:\ ~~ \\ 7(?.J'---l1 :~'~ ,-: ~, ~~ l ~=:;_ [,'~-/ :/1 ~~" \,'~" \~ U :,~ '-'~ .. '" w (.) BORING NO, B-6 z,.-... SHEET 2 OF 2 - <t:1- W ~ 1-0 W Z ~o u... 0,.-... tf) u.. W w FIELD ENGINEER J. Carter DA TE BEGAN November 6, 1988 w (f) « E a:: a::: --! --! DA TE FINISHED November 6, 1988 z w Q... U G: EDITED BY M. Dahl we. za... 2 0 CHECKED BY P. Miller GROUND SURFACE EL. NA :r: 0:::0. 0(11 « (f) 0::: '-' - ::J 1=3 (f) ::J Q.... CASING ELEVATION NA 11. z <t:o w :r: ~--! 0 I-cn W'-' Z LU DESCRIPTION 50 a... sm sc Dense, redbrown. fine to medium-grained, CLAYEY to $IL TY SAND. Dry. l60 L f 70 - increase in fine-grained sand. TOTAL DEP TH = 70 FEET No water encountered while drilling. NOTES: 1) Drilling by ABC Liovin Drilling Company, Signal Hill, California. using a Failing F-10 drilling rig with 8-inch diameter. hollow-stem augers. 2) See Boring Log Legend for explanation of symbols and terms. 3) Borings backfilled to surface with a 7-sack cement/bentonite grout with 3/8-inch rock. CLIENT PROJECT NO. LOCA TION CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA (¡-~ ! ~ (0)(\ ~~ \\7~.j IT ~ I"~ \\.::'-1" \0 ì( 0 J LLJI' '-__....J~\.,~._ U -~.~ .. APPENDIX B GRAIN SIZE DISTRIBUTION CURVES ((2J~(Q)~W~ul§ I) ,. ConverSe Consultants Orange County ~"\ ® December 2, 1988 Mr. Jay Carter Senior Project Geologist Geosystems Consultants, Jnc, 18218 McDurmott East Irvine, California 92714 Subject: Laboratory Test Results (CCOC Project No, 88-32146-04) Dear Mr, Carter: Consulting Engineers and Geologists 9272 Jeronimo Road Suite 123·Ä Irvine, California 92718 Telephone 714 859·5587 Presented herein are the results of the laboratory testing of the nine (9) soil sampl es you provided, Moi sture content, unit weight and gradation tests were conducted observing strict ASTM standards, The following samples were tested, Borinq besiqnation 2 3 4 Sample Depths 20,30,40,60,80 30 40,60,80 Yours Truly, If there are any questions, please do not hesitate to contact us, CONVERSE CONSULTANTS ORANGE COUNTY rfÄ,J Ó¿cL~ Michael A, Rendina Senior Staff Geologist.. MAR/hdf A Wholly Owned Subsidiary of The Converse Professional Group ,. UNIFIED SOIL CLASSIFICATION BOULDERS & COBBLES SAND SILT OR CLAY GRAVEL COARSE FINE FINE U.S. STANDARD SIEVE No. HYDROMETER U.S. SIEVE SIZE IN INCHES 10 3 3/4 3, ß .JO 20 40 60 140 200 illll I I I I II I I I I ~ ~ :\' II I I ¡I I I I I I II I I \ \\ , \ \ ~ \ \ \\ \ \ \ \ði, ~ \ " \\ \ '~ )~ ~, 0 I I I I I I I II I I , II I I I I I I I I 8 I- J: CJ H W 3 >- III CJ Z H If) If) <I: a. I- Z W l) 0:: UJ a. 6 4 2 1000 100 100 0.001 10 1 0.1 GRAIN SIZE IN MILLIMETERS 0.01 LL PI Symbol Location Depth. ft % % Description 0 02 20.0 NP NP Brown Silty Sand (SM) + 02 30,0 NP NP Yellowish Brown' Silty Sand (SM) * 02 40,0 NP NP Yellowish Brown Silty Sand (SM) GRAIN SIZE DISTRIBUTION o 20 40 I- J: CJ H UJ 3 >- III a UJ z H <I: I- UJ a: I- z UJ l) a: UJ a. 60 80 Geosystem-Unit Weights Irvine, California Project No. 88-32146-04 ® Converse Consultants Orange County BOULDERS & COBBLES UNIFIED SOIL CLASSIFICATION GRAVEL SAND SILT OR CLAY FINE FINE U.S. STANDARD SIEVE No. HYDROMETER COARSE U.S. SIEVE SIZE IN INCHES 10 3 ~4 3/8 10 20 40 60 140 200 ," I I' I IT" ~ , , I , I ' I , '\ --S r\ Ì\. \ \ \ \ \ \ \ \ , \ \' : \ \ \ \\ I \ ~ ~ )p ~ 011 , I I I, I I I , I , , I I 1,1, , I 8 ... :x:: CI H UJ 3 >- Q] CI Z H U\ (f) <r a. ... z UJ Ü 0:: UJ a. 6 4 2 1000 10 1 0,1 GRAIN SIZE IN MILLIMETERS 100 0.001 100 0,01 LL PI Symbol Location Depth. ft % % DescriPtion 0 02 60,0 NP NP Dark Brown Silty Sand (SM) + 02 80,0 Brown Clayey Sand (SC) * 03 30,0 NP NP Brown Silty Sand (SM) GRAIN SIZE DISTRIBUTION o 20 40 I- :x:: CI H W :3 >- Q] o w Z H <r I- w 0:: I- Z W Ü 0:: UJ a. 60 80 Geosystem- Unit Weights Irvine, California ® Converse Consultants Orange County Project No. 88-32146-04 BOULDERS & COBBLES UNIFIED SOIL CLASSIFICATION GRAVEL SAND SILT OR CLAY FINE FINE U.S. STANDARD SIEVE No. HYDROMETER COARSE U.S. SIEVE SIZE IN INCHES 10 3 3/4 ~ ~ " 10 20 40 60 . 140 200 III I I I I I I" \ ~ f\\ 11111 I I I' I I I I I I" I , ~ ~ , ~~ \ \ '~ ( ~ \ " \ "\ \ , \ , \ o '" I I I I, II I I " " , I, I I,ll I I 1 8 I- J: CJ H UJ :3 >- II] CJ Z H If) If) <I a. I- Z UJ U a: LLJ a. 6 4 2 1000 00 0.001 100 10 1 0.1 GRAIN SIZE IN MILLIMETERS 0.01 LL PI Symbol Location DeDth. ft % % DescriDtion 0 04 40,0 NP NP Brown Silty Sand (SM) + 04 60,0 NP NP Brown Silty Sand (SM) * 04 80,0 NP NP Brown Silty Sand (SM) GRAIN SIZE DISTRIBUTION o 20 40 I- r CJ H UJ :3 >- II] o UJ Z H <I I- UJ a: I- z UJ u a: UJ a. 60 80 Geosystem- Unit Weights Irvine, California ® Converse Consultants Orange County Project No. 88-32146-04 '!I' APPENDIX C CERTIFICATES OF ANALYSES .¡:::;-, E: (r\\(~ \\( ~ ~II . _ -:- : : -.2] L \~~)~; L -¡;j) U. _' '"' .; ~:!y ~~~.~?F~,~!et~~! ,... (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, suite G Irvine, CA 92714 Date sampled: Date Received: Date Analyzed: Date Reported: 11/02/88 11/07/88 11/11/88 11/17/88 Attention: Project: M. Mehran 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene ppm Toluene ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-2 5' 811-197 0,09 0.3 <0.05 1.3 530 B-2 10' 811-198 4,6 160 53 92 23000 B-2 20' 811-199 120 1500 220 550 40000 B-2 30' 811-200 96 930 110 290 19000 B-2 40' 811-201 84 260 99 160 4000 B-2 60' 811-202 58 460 52 100 11000 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID), and 8020 for BTX detection. (PID) Del Mar Analytical ~s~ Laboratory Director ',)~; - - - - -- - , Del Mar Analytical 18102 Sky Park South. Suite F ' Irvine. CA 92714 (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurrnott East, suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/02/88 11/07/88 11/11/88 11/17/88 Attention: M. Mehran Project: 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: soil Samples Benzene ppm Toluene ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0,05 0.05 0.05 1.0 B-2 80' 15 100 24 49 5200 811-203 B-2 100' 1.1 2,5 1.9 0.6 20 811-204 B-2 120' 0,1 0,5 0.1 0.1 6,1 811-205 B-2 135' <0,05 0,3 0,5 0.05 14 811-206 B-2 140' 0,3 0,3 0.5 0,2 7,4 811-207 This analysis wàs performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID) , and 8020 for BTX detection. (PID) Del Mar Analytical G~S~ Laboratory Director ;,Î~ I" à Del Mar Analytical :~ .:;; 18102 Sky Park South. Suite F ' Irvine. CA 92714 , .. (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/03/88 11/07/88 11/11/88 11/17/88 Attention: Project: M. Mehran 88-250 city of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene ppm Toluene ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-3 5' 811-208 <0.05 <0,05 <0,05 <0.05 6,3 B-3 la' 811-209 0,3 0,8 0.3 0.05 2,3 B-3 20' 811-210 1.0 4.3 1.3 0.3 5.7 B-3 30' 811-211 22 120 35 69 8700 B-3 40' 811-212 43 130 38 68 9300 B-3 60' 811-213 13 52 15 22 2300 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID), and 8020 for BTX detection. (PID) Del Mar Analytical ~JB; Gary Steube Laboratory Director D"- ..' . ¡ = Del Mar Analytical t ......= 18102 Sky Park South, Suite F ' Irvine, CA 92714 .. (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, Suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/03/88 11/07/88 11/11/88 11/17/88 Attention: M. Mehran Project: 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene ppm Toluene ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-3 80' 0,5 0,9 0.7 0.5 29 811-214 B-3 100' 0.5 0,8 0,6 0.2 3,9 811-215 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID), and 8020 for BTX detection. (prD) Del Mar Analytical G~J!i Laboratory Director ,. '-lià Del Mar Analytical -= 18102 Sky Pari< South. Suite F . Irvine. CA 92714 IIJ"" (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, Suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/03/88 11/07/88 11/13/88 11/17/88 Attention: M. Mehran Project: 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene ppm Toluene ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-4 5' 811-216 <0.05 6.2 <0.05 8.3 1300 B-4 10' 811-217 0,2 0.4 0.2 3.7 860 B-4 20' 811-218 6.3 41 21 32 3100 B-4 40' 811-219 42 290 76 120 9300 B-4 60' 811-220 38 120 59 93 7200 B-4 80' 811-221 33 190 63 84 6300 B-4 100' 811-222 21 130 51 65 6100 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID), and 8020 for BTX detection. (PID) Del Mar Analytical ~~ Laboratory Director · " I,· ã. Del Mar Analytical ~. -= 18102 Sky Pork South. Suite F ' INine. CA 92714 :' ..... (714) 261-1022 . FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, suite G Irvinel CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/04/88 11/07/88 11/15/88 11/17/88 Attention: Project: M. Mehran 88-250 city of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene ppm Toluene ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-5 5' 0.8 0,7 <0.05 0.3 3.0 811-223 B-5 10' 0.7 0.4 0,6 0,2 1.9 811-224 B-5 20' 1.1 1.3 1.1 1.2 28 811-225 B-5 30' <0.05 1.5 0.8 0.2 1.0 811-226 B-5 40' 1.3 1.2 0.6 0.1 1.0 811-227 B-5 60' <0,05 <0,05 <0.05 <0.05 2,9 811-228 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID), and 8020 for BTX detection. (PID) Del Mar Analytical G:ÞS~ Laboratory Director i- .' 'I::! S Del Mar Analytical ': Ii 18102 Sky Park South. Suite F ' INine. CA 92714 , (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/04/88 11/07/88 11/15/88 11/17/88 Attention: M. Mehran Project: 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene ppm Toluene ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-5 80' 0.4 1.3 0.3 0.2 1.0 811-229 B-5 90' 0.5 1.3 0.4 0,3 2.5 811-230 B-5 100' 0.1 0.5 0.7 0.2 1.8 811-231 B-5 120' <0.05 <0.05 <0.05 <0.05 <1.0 811-232 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID) , and 8020 for BTX detection. (PID) Del Mar Analytical ~.lli Gary Steube Laboratory Director .' .' !~" if: Del Mar Analytical ~. -= 18102 Sky Park South. Suite F ' Irvine. CA 92714 .~ ... (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, Suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/06/88 11/07/88 11/16/88 11/17/88 Attention: M. Mehran Project: 88-250 city of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene ppm Toluene ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-6 5' 811-233 1.5 6.9 1.2 0.5 10 B-6 10' 811-234 0.1 0.5 0.4 0.3 2.1 B-6 20' 811-235 <0.05 <0,05 <0.05 <0.05 <1. 0 B-6 30' 811-236 <0.05 <0.05 <0.05 <0.05 <1. 0 B-6 40' 811-237 <0.05 0.05 0.6 0.5 1.3 B-6 50' 811-238 0.1 0,1 <0.05 0.07 1.8 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID) , and 8020 for BTX detection. (PID) Del Mar Analytical G-!;,J!:1e Laboratory Director '" "I" if: Del Mar Analytical , .11J 18102 Sky Park South. Suite F ' Irvine. CA 92714 IJII" (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/06/88 11/07/88 11/16/88 11/17/88 Attention: M. Mehran Project: 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene ppm Toluene ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-6 60' 0.2 0.2 0.2 0.1 1.0 811-239 B-6 70 ' 0.1 0,4 0.6 0.6 1.3 811-240 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID), and 8020 for BTX detection. (PID) Del Mar Analytical G~~ Laboratory Director .- Del Mar Analytical 18102 Sky Park South. Suite F ' INine. CA 92714 (714) 261·1022 . FAX (714) 261-1228 November 18, 1988 Geosystem Consultants 18218 McDurmott East, Suite G Irvine, CA 92714 QC Data Report project: 88-250 QC/QA Data for samples: 811-197 through 811-240 Sample Integrity Comments:Received intact; on ice HOlding Time Observed? Yes Sample Number 811-203 811-212 811-225 811-238 Sample Number 811-197 811-206 811-225 811-233 Analyte Original Result ppm Duplicate Relative Result 9-:- Difference 0 ppm 22.1 7.4 42.5 1.0 1. 28 4.5 1.8 5.7 Ethylbenzene 23.8 Benzene 42.8 Toluene 1. 34 TPH 1.7 original Spike Spike % Analyte Result Added Result Recovery ppm ppm ppm TPH 330 325 615 88 Toluene 0.33 0.3 0.6 90 TPH 18.3 19.5 35.6 89 TPH 10,1 20.0 9.97 99 Del Mar Analytical G~s~e Laboratory Director í~· ~ ~ 1'; ~...f ! " /'/~--'~:i. .----' ~,...:;._.~"..".v ~'-;, \ rM~ ~ ENVIRONMENTAL REMEDIAL ACTION REPORT CITY OF BAKERSFIELD HOMELESS SHELTER SITE 1600 EAST TRUXTUN AVENUE BAKERSFIELD, CALIFORNIA PRESENTED TO: CITY OF BAKERSFIELD PREPARED BY: THORNE ENVIRONMENTAL, INC. FEBRUARY 1991 , ! ' I ~ .5.. ;----- rfiI THORNE ~ ENVIRONMENTAL TABLE OF CONTENTS Page 1.0 Executive Summary 1 2.0 Introduction 2 3.0 Project Background 2 3.1 Site Description 2 3.2 Project History 2 4.0 Field Operations 4 4.1 Remedial Activities 4 4.2 Drilling Methodology 5 4.3 Soil Sampling Methodology 5 4.4 Field Screening of Soil Samples 6 4.5 Soil Analyses 6 5.0 Summary of Analytical Results 6 6.0 Conclusions 7 7.0 Limitations 7 Exhibits Appendices ~- .,~ IfiI THC:)RNE !Sf ENVIRONMENTAL 1.0 EXECUTIVE SUMMARY The City of Bakersfield contracted with Thorne Environmental, Inc, (Thorne) to perform additional site characterization and to remediate the gasoline-impacted soil at the Bakersfield Homeless Shelter facility located at 1600 East Truxtun Avenue, Bakersfield, California, The purpose of the characterization was to further evaluate the extent of soil impaction at Sites I and II and then to successfully reduce hydrocarbon concentrations to acceptable levels using a soil vapor extraction system. In July and August, 1989, Thorne Environmental drilled and installed vapor extraction wells VE-l, VE-2, VE-3, and VE-4 at Site I and vapor extraction well VE-6 at Site II, A total of 37 soil samples were submitted to Med-Tox Associates, Inc, Laboratories for analyses which were used to define the limits of impaction. The site received a score of 4Q nn thP lcUFT Manual gasoline leaching potential risk analysis form (Leaking Underground Fuel Tank held M"anual, 1989).' A site characterization report was submitted to the City in September 1989, Soil vapor extraction remediation began on a continuous basis on March 1, 1990, and except for short-term interruptions, vapor extraction continued 24 hours a day until January 1991. During remediation various well combinations were open to extraction for specific time periods to balance the airflow and vapor removal from the impacted zones, On August 28, 1990, confirmation boring CB-2 was advanced to 46.5 feet at Site II, The analytical results indicated that hydrocarbon concentrations had been reduced to acceptable levels and Site II was decommissioned, On September 26 and 27, 1990, confirmation boring CB-1 was advanced to 90 feet on Site I in order to assess the progress of vapor extraction, Based on field indicators of hydrocarbon impaction, CB-1 was completed as a vapor extraction well and manifolded into the vapor extraction system. Remediation was resumed until January 1991. On January 14, 1991, a final confirmation boring CB-3 was advanced at Site I. CB-3 was located in the approximate center of the original plume (as determined by KCEHSD) in order to confirm the progress of remediation, Analytical results indicated that target clean- up levels corresponding to a LUff score of ~as been accomplished, Based on the analytical results and mass balance calculations, orne submits that the LUff allowable contamination levels have been met and that the site has been remediated, ! .: :.; J ~....-- . ' . , ;,.J iN~. -/. ..~ ...-r~""""?1 /Q. ~jA. :"'v'-.!v ,;,(;¡j-(J '¡- U v (t.,-':: ::l~~ ~'-: ..^-..t ~d:-.? v C?_ ¡:... d', ~ ..,. (/I cr.". ,.: :~t- ;.'- . ,t).'f':;"'~.) 'ý'a.P8-r I 3&1044.032 1 1" \. rØl1HORNE ISf ENVIRONMENTAL z.& INTRODUCTION Thome Environmental, Inc, was contracted by the City of Bakersfield's Economic and Community Development Department to perform additional site characterization and vapor extraction of gasoline-impacted soil at the Bakersfield Homeless Shelter, The purpose of the remediation was to reduce the hydrocarbon concentrations in the soil ,to· acceptable· levels using soil vapor extraction, A workplan was developed and permits were obtained, Vapor extraction wells were installed, manifolded into the system, and placed .on vacuum extraction using a Regenerative Thermal Oxidizer Unit (RETOX 400), Confirmation borings were advanced following several months of extraction and analytical data obtained which indicate that soil remediation is complete. 3.0 PROJECT BACKGROUND 3.1 Site Description The Homeless Shelter site is located in the southwest quarter of Section 28, T,29S, R.28E (MDB&M) and lies south of the Atchison, Topeka and Santa Fe Railroad yard in Bakersfield, California (Exhibit 1), The site consists of two parcels, referred to as Site I and Site II, which include postal addresses 1530, 1600, and 1600 East Truxtun Avenue (Exhibit 2), Site I is located in the northwest corner of the property and includes the area in which motor vehicles were fueled, The former fueling facilities consisted of two 1,000-gallon underground gasoline storage tanks and a fuel dispensing island with one pump, The site is currently unpaved and contains vapor extraction wells VE-l, VE-2, VE-3, VE-4 and confirmation borings CB-1 and CB-3 (also completed as vapor extraction wells) (Exhibit 3). The RETOX 400 is located on a cement pad along the northwest fence line, Site II is a small parcel located east of Site 1. It contained one 550-gallon underground diesel storage tank and a dispenser island which have been removed (Exhibit 4), Site II formerly contained vapor extraction well VE-6 and confirmation boring CB-2. Well VE- 6 was abandoned following receipt of clean closure from Kern County Environmental Health Services Department (KCEHSD). 3,2 Project History On May 26, 1988, Apex Environmental removed the two 1,000-gallon underground gasoline storage tanks from Site I, and one 550-gallon diesel tank from Site II, Soil samples were collected at two and six feet below the base of each tank, Analytical results from Site I indicated fuel hydrocarbon concentrations ranging from 800 ppm to 7,000 ppm, At Site II, analytical results indicated fuel hydrocarbon concentrations of 10,756 ppm at two feet and 11,017 ppm at six feet. 3&1044.032 2 1'.. ffilnaNE £Sf ENVIRONMENTAL On January 20, 1988, the City received a letter from the Kern County Environmental Health Services Department stating that a site characterization study would be required to assess the lateral and vertical extent of hydrocarbon contamination in the soil at both Site I and Site II, In July, 1988, William H, Parks and Associates advanced two borings on Site I. The first boring, TH-l, was advanced to 40 feet at which point the drilling rig was unable to penetrate further, A larger drilling rig was used to advance boring TH-IA to 85 feet. The 5 foot and 25 foot samples from boring TH-l and the 45 foot, 65 foot, and 85 foot samples from boring TH-IA were submitted for analysis, The analytical results indicated that all samples contained elevated concentrations of total petroleum hydrocarbons (TPH) and volatile aromatics as gasoline, On July 19, 1988, three test holes were advanced by William H, Parks and Associates at Site II (TH-4, TH-5, and TH-6), TH-4 was drilled through the center of the former tank location to assess the vertical extent of hydrocarbon compounds with TH-5 and TH-6 placed to assess the lateral extent of the hydrocarbon compounds, Analytical results indicated the presence of TPH as gasoline to a depth of approximately 30 feet and less than fifteen feet laterally around the previous tank location, Between November 1 and November 7, 1988, Geosystems Consultants, Inc, advanced a total of five additional soil borings at Site I (B-2 through B-6), B-2 was advanced to 140 feet to assess the vertical extent of hydrocarbon impaction, Analytical results indicated .3 mg/kg of benzene at 140 feet and 14 mg/kg of TPH at 130 feet. B-3, B-4, B-5, and B-6 were drilled to assess the lateral extent of hydrocarbon compounds, In boring B-3, 9,300 mg/kg of TPH as gasoline were detected at 40 feet, and therefore the lateral extent in the northeasterly direction was not completely defined. Additionally, B-4 had concentrations of 6,100 ppm TPH at a depth of 100 feet, thus indicating the need for additional site characterization work, On April 26, 1989, the City of Bakersfield contracted Thorne Environmental to perform further site characterization and to remediate the site, On July 28, 1989, vapor extraction well VE-6 was drilled, sampled and installed at Site II, Analytical data indicated hydrocarbon impaction extended to a depth of approximately 35 feet. On August 16, 1989, vapor extraction wells VE-1, VE-2, VE-3, and VE-4 were drilled, sampled and installed at Site I. Analytical data indicated hydrocarbon impaction extended to a depth of approximately 120 feet and extended laterally approximately 40 feet. A comprehensive site characterization study was submitted by Thorne in September 1989. Based on this work, the site target cleanup levels were set at 1,000 ppm TPH, 1 ppm benzene, 50 ppm toluene, 50 ppm ethylbenzene, and 50 ppm xylene, On March 1, 1990, Thorne Environmental began soil vapor extraction using the RETOX 400, Vapors were extracted from the wells and also from an above-ground treatment gallery which contained drill ,cuttings, Remediation continued on a relatively continuous basis until January 1991. 3E-I044.032 3 ~' rfil1K)RNE !Sf ENVIRONMENTAL Composite sampling of soil cuttings within the gallery was performed and the analytical data indicated that the soil had been remediated, The above ground treatment gallery was decommissioned in July, 1990 because the cuttings had been remediated and to make room for construction activities at the site, On August 28, 1990, confirmation boring CB-2 on Site II was advanced.>to,adepth,of41.5 feet to assess the progress of remediation (Exhibit 4), Analytical results indicated that the soil in Site II had successfully been remediated and Site II was decommissioned, On September 26 and 27, 1990, confirmation boring CB-l was advanced to a depth of 90 feet on Site I to assess remediation progress. CB-l was completed as a vapor extraction well based on field indicators. This well was manifolded in the vapor extraction system and the remediation process continued, On January 14, 1991, confirmation boring CB-3 was advanced to 95 feet on Site I (Exhibit 3), Analytical data indicated that hydrocarbon impaction had been reduced to below target cleanup levels, 4.0 FIELD OPERATIONS 4.1 Remedial Activities The Regenerative Thermal Oxidizer 400 Unit began continuous operation on March 1, 1990, following mechanical adjustments and field testing, The concentration of hydrocarbons in the inlet air stream were monitored daily using a Ratfisch RS100 Flame Ionization Detector (FID), The RS100 is a total hydrocarbon analyzer which measures hydrocarbon concentration in parts per million (ppm), This concentration readout was monitored daily for fluctuations by field personnel. Vapor extraction continued from March 1990 to January 1991. During this period, various combinations of wells were opened to extraction for varying intervals of time, Exhibit 5 graphically displays the history of remedial activities on site including: 1) well configuration adjustments and associated extraction time intervals; 2) when confirmation borings were advanced, and other significant events; 3) the displayed curve represents the total inlet air concentrations through time (as determined by Ratfisch measurements), Initially, vapor extraction was focused on areas of highest concentration, VE-l at Site I and VE-6 at Site II, The initial concentrations were 1,100 ppm and decreased over time as the most volatile organic compounds were removed. Well configurations were periodically adjusted in response to inlet air concentration decreases to ensure that the maximum amount of volatile compounds were being extracted at all times, Confirmation boring CB-2 was advanced in August 1990, when well VE-6 was unable to 3801044.032 4 T, fI1J 1HORNE £Sf ENVIRONMENTAL produce a detectable concentration of volatile hydrocarbons on the Ratfisch, Mass balance calculations also indicated that the volume of impacted soil had been significantly reduced, The analytical results confirmed that hydrocarbon concentrations in the soil had been reduced below target clean-up levels, The Kern County Environmental Health Services Department (KCEHSD) concurred with the results and Site II was decommissioned, Confirmation boring CB-1 was advanced in September 1990, based on field testing results of wells VE-1, VE-2, VE-3 and VE-4 and on mass balance calculations, CB-1 was completed as a vapor extraction well based on field indicators, Although the soil sample analytical results indicated that the content of volatile organic hydrocarbons had been successfully reduced, well CB-1 was manifolded into the vapor extraction system and remediation continued, The decision to continue remediation was influenced by the following: 1) Revised mass balance estimates indicated that a greater initial volume of hydrocarbons· was in place prior to vapor extraction. These revised calculations indicated that remediation was not complete, The revised mass balance calculations are included as Appendix C, 2) The location of CB-1 was not in the center of the original plume, Thorne estimated that if the boring had been drilled in the area of highest mitial concentrations, analytical results would bave been above target levels, Vapor extraction continued through December 1990, at which time concentrations decreased significantly and mass balance calculations indicated that a final confirmation boring was warranted, Based on inlet concentration data, approximately 25,000 pounds of hydrocarbons have been extracted from the soil at the site (Appendix C), Confirmation boring CB-3 was advanced on January 14, 1991. This boring was located in the center of the original plume, as determined by KCEHSD, The analytical results indicated that hydrocarbon concentrations had been successfully reduced to target clean- up levels. 4,2 Drilling Methodology Borings CB-1, CB-2, and CB-3 were advanced using a mobile drill B-53 rig equipped with 8-inch and lO-inch (outside diameter) hollow stem continuous flight augers in accordance with ASTM Method 01452-80 for soil investigations, The augers were steam cleaned prior to drilling each boring, Cuttings and other spoils from the borings were placed in 55-gallon drums pending receipt of sample analyses to determine appropriate disposition, 4.3 Soil Sampling Methodology Soil samples were collected through the augers in three 2-inch diameter by 6-inch long 3&1044.032 5 :; . IØITHORNE b I ' I' I d' b 140 d h ' h ~. EYVIRONMENTAL rass s eeves In a sp it-spoon samp er nven ya poun ammer Wit a ~InCfi drop in accordance with ASTM Method D1586-84 for split barrel sampling of soil. One of the brass sleeves was used for lithologic identification, one was used for field screening and one was used for analytical testing, The brass sleeves and split-spoon samplers were cleaned prior to each use, Soil samples were driven at five foot intervals in each boring, The blow counts, recovery, lithology, and field screening results were recorded on field borings logs, Data compiled from the field boring logs was entered into a computer data base and: final" logs·'were.: generated, The boring logs are compiled in Appendix B, Boring lithology was described in accordance with a modified ASTM Method D2488-84, the Standard' Practice for Description and Identification of Soils, The middle brass sleeve with soil from each interval was capped, sealed, and labelled in accordance with EPA protocol (sample identification, boring number, date, sampler, and depth), recorded on a Chain of Custody form, placed in a cooler on blue ice and transported to National Toxicology Laboratories (NTL) with th.e Chain of Custody for the specified analysis, The analytical laboratory results and Chain of Custody documents are included in Appendix A, 4.4 Field Screening of Soil Samples One of the brass tubes within the split spoon sampler was used for field screening, Immediately after the soil samples were removed from the split spoon sampler, the soil in the organic vapor content in the middle tube was approximately measured with an HNU 101. The HNU 101 utilized a 10.2 electron volt (eV) potential and measures the concentrations in parts per million (ppm) of all volatile organic compounds with a photo ionizing potential of less than 10,2 e V, The HNU was calibrated with a 100 ppm isobutylene standard prior to use, 4.5 Soil Analyses A total of 37 soil samples were collected (18 from CB-l and 19 from CB-3) and 20 were analyzed by National Toxicology Laboratories (11 from CB-l and 9 from CB-3), a state certified laboratory, in accordance with state guidelines and EP A protocols, The samples were analyzed for total petroleum hydrocarbons (TPH) as gasoline and for benzene, toluene, ethylbenzene, and xylenes (BTEX) using EPA Methods 8015 (modified) and 8020 respectively, A summary of the sample data is compiled in Tables 1 and 2 and the actual analytical results are included as Appendix A. 5.0 SUMMARY OF ANALYTICAL RESULTS Soil analytical results indicate that the concentrations of volatile organic compounds have been reduced to acceptable levels. The site received a score of 49 on the LUff Manual Gasoline Leaching Potential Risk Analysis as stated in Thorne Environmental's site characterization study dated September, 1989, The target cleanup levels corresponding to a score of 49 are 1,000 ppm TPH, 1 ppm Benzene, 50 ppm Toluene, 50 ppm ethylbenzene 3E-I044.032 6 · 1ØJ1HORNE d 5 1 P , , TPH 1, h' h ~O.ENVIRONMENT AL an 0 ppm xy ene, flor to vapor extractIOn, as gaso me were as Ig as ~ 00 ppm, Analytical results from confirmation boring CB-3 indicate that out of 55 analyses, only two analyses (from the 10 foot sample) were above the LUFf levels; ethylbenzene at 54,07 ppm and TPH at 1024 ppm, BTEX concentrations have also been reduced to acceptable levels, for example Benzene concentrations have been reduced from 280 ppm to the 0,10 ppm range after vapor extraction. ~- 6.0 CONCLUSIONS The contaminant concentrations (TPH as gasoline and BTEX) have been successfully reduced at Site I to acceptable levels, Site I will also be paved as soon as remedial operations have been completed, effectively capping the areas and thus preventing downward leaching of surface runoff, Based on the field analytical data and the mass balance calculations, the site has been remediated, 7.0 LIMITATIONS This report was prepared in accordance with generally accepted standards of environmental geolgoical and engineering practice in California at the time of investigation, This investigation was conducted solely to evaluate environmental conditions of the soil for hydrocarbons at the subject property, No soil engineering or geotechnical references are implied or should be inferred, Evaluation of the geologic conditions at the facility for this investigation is made from a limited number of data points. Subsurface conditions may vary away from these data points, We trust this report meets your current needs, Please call if you have any questions, Sincerely, THORNE ENVIRONMENTAL, INC. CL # A-558536 ~hI¡ y J.. /Jcut;v- Stä:'"cyL:ßhehr Staff Geologist /'t ¿. - ¿~ Eric, nwood, R.G" R,E.A. Project Engineering Geologist SLB/EJG/ma 3&1044.032 i I I I . 7 I T r [ I I I I I I I I I I I I I I , -..,.....- ;; o ° . (}C .. Isew~r,c Oi~r°,"1 '0· ,0 !oO I ,- \ !!!!.,!!!!!.'Kayandee ' ~ ."." "!:.'''':;';:''' i . , . ----Jl-JI-L-JL--: C=[=l ~.- =.......= I~I~-(~;'" .... - -. --' I'J' -", It I =. ,., b t·:~" ~ __._ ':Scw~r,e O.Di'oo~"1 E~h"h'I"""" :gr!~mi!:~ ". ;!, :~ ,.,.,., I., i r·~"::' I¡,.:.;~;:;",,; i I' , ,. ,: i~ ~.. . I@J~ lOCATION MAP HOMELESS SHELTER BAKERSFIELD, CALIFORNIA 1 .. EXHIBIT ~ -" " - -\ - ..- \ J~ ,øØ _ - tIUST. 0 -- \ ~-- ~;.-:'- ~ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ j'. SEE DETAILED MAP FOR SITE II SEE DETAILED MAP FOR SITE I ~ ~Ø'!!:. -- s'r1""~ t t" --~ --- \ \ i \ \ J .., I ..I :!II ~i -" dl '\ I ~-- ( \ \ \ \ 1\ \\ ~~ ~ ENVIRONMENTAL Bt\KERSFIELD HOMELESS SHELTER 1600 E. TRUXTUN, BAKERSFIELD, CA SITE MAP 3E-1044 2 PROJECT NO. EXHIBIT . .. . l-x___ RAILROAD T 4- RACKS r X_______ ): FENCE ~X ---X :>( --X____ X ' --X_ - I VES VE-4 MACHINE 0 I VE-3 0 /.'\ B-3 (i) I ìK CB-3 w ü ~ z CB-1 w VE-1 u.. [i; 0 1,-. VE-2 0 ^ I )< BUILDING 1-. X- X ;>( , SCAL.E 1"=20' ~11+ORNE BAKERSFIELD HOMELESS SHELTER PROJECT NO. EXHIBIT 1600 E. TRUXTUN, BAKERSFIELD, CA ~ ¡: t\/\ /I D (") r-J 'II' ¡: '" T ð. I SITE I DETAILED MAP 3E-1044 3 c-' > " - BUILDING o TH-6 I 1-----' I I I CB-2 [! I I o TH-S I o TH-4 I I I I E]VE-61 I I I I FORMER ~I I UNDERGROUND I I TANK L____J 4 SCALE 1"=5' ~THORNE BAKERSFIELD HOMELESS SHEL TER PROJECT NO. EXHIBIT 1600 E. TRUXTUN, BAKERSFIELD, CA ~ ENVIRONMENTAL SITE" DETAILED MAP 3E-1044 4 1100 1000 900 - -800 E Co S Z 700 0 i= ~ a: 600 t- Z W U 500 Z 0 U t- 400 W ...J Z 300 200 100 VE-1, 2, 3. 4 OPEN TO AMBIENT ITESTING VES MACHINE (Various combinations of wells open, Ran 7 days) VE-1, VE-6 GALLERY ON EXTRACTION VE-1 VE-4 GALLERY ON EXTRACTION W VE-2 VE-3 I I ON EXTRACTION VE-2, 3, CB-1 ON EXTRACTION ADJUSTED WELL /NFIGURATION 7 ADVANCED CONFIRMATION BORING SITE II ADJUSTED WEll CONFIGURATION M A J A SOURCE TEST ADJUSTED WELL CONFIGURATION / ABOVE GROUND GALLERY DECOMMISSIONED J F J N D J M TIME S D o N ~TIDRNE ~ ENVIRONMENTAL BAKERSFIELD HOMELESS SHELTER 1600 E. TRUXTUN, BAKERSFIELD, CA .. AIR SAMPUNG PROJECT NO. EXHIBIT 3E-1044 5 ,i' TABLE 1 CB-l ANALYfICAL RESULTS (ppm) Sample # Depth (ft) JL l ..R. X TPH 02803 5 ND ND ND ND NA 02804 10 ND ND ND ND 59 02806 20 ND ND ND 0.40 55 02809 35 ND 0.50 ND 2,04 235 02811 45 ND 0.10 ND 1.25 73 02814 60 0.25 0.06 0.33 2,55 488 02816 70 0.25 0.06 ND 2.55 165 02818 80 0,23 0.46 ND 3.21 132 02820 90 ND ND ND 0,15 66 MRL 0,05 0,05 0,05 0,05 5 B BENZENE T TOLUENE E ETIIYLßENZENE X TOTAL XYLENES 11'1,1 TOTAL PEfROLEUM HYDROCARBONS NA NOT ANALYZED NO NOT DETEcœD MRL MINIMUM REPORTING LEVEL 38-1044.026 TABLE 2 CB-3 ANALYTICAL RESULTS (ppm) Depth (ft) JL ..I.. -E... ..x. TPH 10 ND 0.45 54.07 16,32 1024 20 ND 2,76 1.44 11.05 51 30 0.32 37.51 8,70 72,52 586 35 ND 7.03 30,34 7,53 297 40 ND 0.32 2,78 1.09 224 50 ND1 2,78 0.89 8,99 92 60 1.03 16.58 21.62 20.45 258 75 ND 4.16 20,70 5,54 419 80 0,18 0.22 ND 0,31 ND 90 0,21 ND ND 0,77 42 95 ND NO ND ND ND ß - Benzene T - Toluene E - Ethylbenze X - Xylene TPII - Total Petroleum Hydrocarbons ppm - Parts Per Million APPENDIX A ~~t.i:~~~y t~ i !V~ .J raboratories INC. Naresh C. Jain, Ph,D, Laboratory Director Thomas C, Sneath, B,S, Chief Toxicologist 1 1..,0 California Ave. Bakersfield, California 93304 805 / 322-4250 800 / 350-3515 FAX 805/322-4322 =====================================================~~-~-~-~~----- BENZENE. TOLUENE. ETHYLBENZENE, XYLENES horne Environmental, Inc, 830 Trux~un Ave,. suite 216 Bakersfield. CA 93301 ~ttention: Eric Greenwood Date of Report: 30-Aug-90 Lab #: 0828900-5 Sample Description: Project 3E - 10~4 Sample #02754 fest Method: EPA Method 8020 Type of Sample: Soil )ate Sample Collected: 28-Aug-90 Date Sample Received @ Lab: 28-Aug-90 Date Analysis Completed: 29-Aug-90 Constituent, Reporting Units Analysis Results Minimum Reporting Level Benzenp Toluene Ethylbenzene Total Xylenes ug/g ug/g ug/g ugjg N . 0 . N .0, 0.21 0,20 0,05 0.05 0.05 0,05 Commen-:::s: California D,Q.H.S. Cert. #225 N , D , None Detected Data Relp.Ñ~p Authorized: ~ .. ..National ~ :'-[ox· cology ~ raboratories INC Naresh C, Jain, Ph.D, Laboratory Director Thomas C, Sneath, B.S. Chief Toxicologist ¡ 00 California Ave. Bakersfield. California 93304 805 / 322-4250 800 / 350-3515 FAX 805/322-4322 BENZENE. TOLUENE. ETHYLBENZENE, XYLENES ===========~~:=========~=====================~=~~~===~~-~~--------- Thorne Environmental. Inc, 1830 Truxtun Ave.. Suite 216 Bakersfield. CA 93301 Attention: Eric Greenwood Date of Report: 30-Aug-90 Lab #: 0828900-7 Sample Description: Project 3E - 1044 Sample #02756 Test Method: EPA Method 8020 Type of Sample: Soil Date Sample Collected: 28--Aug-90 Date Sample Recteived @ Lab: 28-Aug-90 Date Añalysis Completed: 29-Aug-90 Constituent Reporting Units Analysis Results Minimum Reporting level Benzene Toluene Ethylbenzene Total Xylenes ug/g ug/g ug/g ug/g N . 0 , N , 0 . N ,D. N. D , 0.05 0,05 0,05 0,05 Comments: California a.O.H.S. Cert, #225 N ,0. None Oetected « Data Releas2 Authorized: ~~t.i~~:~y L,:¡::..,j raboratories INC Naresh C, Jain, Ph.D, Laboratory Director Thomas C. Sneath, a,s. Chief Toxicologist Gv California Ave. Bakersfield, California 93304 805 I 322-4250 800 I 350-3515 FAX 805/322-4322 Total PeCroleum Hydrocarbons Gasoline - - - - -- -'- -"- ~- ~. - - - - - - - . -.. -- - :~~==~===~=-~---~-----~~~---$~----------------------~--- Thorne Environmental, Inc. 1 30 Truxcun Ave" Suite 215 kersfield. CA 93301 Date of Report: Lab#: 30-Aug-90 0828900-5 Mtt:ention: Eric Gr<:!enwocd '¡mple Description: PrQject 3E - 1044 Sample 1t02754 :st Method: Cal.if. COHS Type of Sample: Soil .3:8 Sample ::Jll.ected: 2 8 -- A u q -, 9 0 Date Sample .~ec·d @ Lab: 28-Aug-90 Date Analysis Completed: 29-Aug-90 I..onstituent ~eporti.nq Units Analysis Results Minimum Reporting Level otal Petroleum Hydro- _arbon as Gasoline ug/g 20,0 5.00 omments: alifornia O.O,H.5. Cert. ~225 1ata Release Authorized « .<National i Ii: !,, LOX· cology ,1.\ h.. raboratories Naresh c. Jain, Ph.D, Laboratory Director Thomas C, Sneath, 8.S, Chief Toxicologist INC. "00 California Ave. Bakersfield. California 93304 805/ 322·4250 800 / 350-3515 FAX 805/322-4322 Total Petroleum Hydrocarbons Gasoline ===================================================~=~================ Thorne Environmental, Inc. 1830 Truxtun Ave., Suite 216 Bakersfield. CA 93301 Attention: Eric Greenwood Date of Report: Lab#: 30-Aug-90 0828900-7· Sample Description: Proj~ct. 3E - 10-44 Sample ~02756 Test Method: Calif. DOHS Type of Samplg: Soil Oa'Ca SamD.1.'? C:)llected: 28-Auc:¡-90 Date Sample Rec'd @ Lab: 28-Aug-90 Date Analysi.s Completed: 29-Aug-90 Constit:uent Reporting Units Analysis Results Minimum Reporting Level Total Petroleum Hydro- carbon as Gasoline ug/g None Detected 5,00 Comments: California a.D.H,S. Cert. #225 Data Release Authorized it I ¡¡ I , ~ A "'.... PROJ. NO. PROJECT NAME £HV/ROHMEHTI- 3£,., {o# NO loP. NO. SAMPLERS: (Signalure/N..",her) (p.O. NO.) ex AO'¡ BABHf?- OF I SAMPLE J.D. COHo DATE SAMPLE I.D. TAlNERS MMIOD/YY TIME REMARKS III':~M:SS ~ \'256 \1 D ~o/) 1t ol1(o Cß- 0' I I I ~tjD 't 07,1'i( , It 101 - - - - I-- I qOO 'q: 07/1Ç'-¿ IS' - ,- - - - i- II I ¿~ 10 W 07:1t;") 'in' .- - - ..- - -. - - 1\ I l 1,0 tf 07- "1c;LJ- '2. c; I ~ K - .- f- - - , \ I t 35 .If 01/15/j '?IJ' f- ' - I \ I 1000 IW 0"11S'lo ?¡ç\ \ X X - -- - i- II ,v IDle; tf Oî lS"í n 40' I - -_. -. -- - -- ,- - .- I-- - -- - - - - _. - - - - - - - - - - . - - - ._- - - - -- - - - ,- ---- .-. - - - - - - ..- .--- .- - -- -- _. - - i- .- .- -.- - - - - - - - -. -- - - - - - 1- - -- - - -- - - - - - - .-. - -, -- - '- - - 1- - - - .-- - -- .- 1- - - - - -. ------f---. / I Re'I~"q..ished by: ISi y.lule) wzw;r' - £? / ( ~I/ ;;¿d be:=.- R.II"'~s_l? U' / / j(¡(tf ¡)aLL Send neslIlIs To Etili! G~1JWOOD ^IIC1111011 01 _ . _" ____,...._ : 7{:" "ÒZ' ""'ï'"' necclved by: (5igtlllltlf~1 p- 3/- ;7(/ TllonNE EtNII\ONME~IT^,.INC. - L--. 1~10 lÞ-U-rTU rJ l\ueuUf #'2/(J .~ BtlH<fWSfleco [fA, i Relinquished by: (Sign.lull) DalefTIme Received lor lahoratory lIy: ct3 30 ( .. I ,Slgn.'lIre) ( ! l ---- .. .1 - - - .- - - ----- f·)}j,~ 1 j' -~ ( H,l i¡d~~ r_V¿j l;..,Ji\.i\·: ---- (' ,..,,\ II..,...... ",. I. . to.; t'" 1.110 . ..National ~ -I-ox· eulogy ~ raboratories INC Naresh C, Jain, Ph,D, Laboratory Director Thomas C. Sneath, B.S. Chief Toxicologist 1100 California Ave. Bakersfield, California 93304 805/ 322-4250 800/350-3515 FAX 805/322-4322 BENZENE, TOLUENE, ETHYLBENIENE, XYLENES ------------------------------------------------------------------- ------------------------------------------------------------------- Thorne Environmental, Inc. 1830 Truxtun Ave" Suite 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of Report: 10-Oct-90 Lab #: 092690B-2 Sample Description: Project 3E-I044 Sample #02804 Test Method: EPA Methöd 8020 Type of Sample: Soil Dat.e Sample Collect.ed~ 26-Sep-90 Date Sample R.eceived @ L.ab: 26-Sep-90 Dat.e Analysis Complet.ed: 09-0ct.-90 Const.ituent. Reporting unit.s Analysis Result.s Minimum Reporting Level Benzene Toluene Et.hy.lbenzene Tot.al Xylenes ug/g ug/g I)g/g ug/g N ..D. N.D. N.D.. N..D.. 0.0.5 0.0.5 0.0.5 0.0.5 Comments; California D.O..H.S. Cert.. #22.5 N..D. = None Det.ect.ed Data Release Authorized: [1{Ht~l \ ;~ ~ationaI :! · ' . I, ox· eology \1 J. ¡.illil. raboratories Naresh C. Jain, Ph.D. Laboratory Director Thomas C, Sneath, 8,5. Chief Toxicologist INC. 1100 California Ave. Bakersfield. California 93304 805 / 322-4250 800/350-3515 FAX 805/322-4322 BENZENE, TOLUENE, ETHYlBENZENE. XYLENES ------------------------------------------------------------------- ------------------------------------------------------------------- Thorne Environmental, Inc. 1830 Truxtun Ave" Suite 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of Report: lO-Oct-90 Lab #: 0926908-4 Sample Description: Project 3E-1044 Sample #02806 Test Method: EPA Method 8020 Type of Sample: Soil Date Sample Collected: 26-Sep-90 Dat.e Sample Received @ Lah:. 26-Sep-90 Dat.e Analysis Completed: 09-0ct-90 Const.it.uent. Report.ing Units Analysis Result.s Minimum Report.ing Level Benzene Toluene Et.hylbenzene Tot.al Xylenes ug/g ug/g ug/g ug/g N..D.. N.D. N.D. 0..40 0.0.5 0.0.5 0.0.5 0.0.5 Comment.s: California D.G.H.S. Cert... #22.5 N.D. = None Det.ect.ed Data Release Aut.horized: ø t · ~~t.~~:~y r II I. ¡ :,d · J raboratories INC. Naresh C, Jain, Ph,D, Laboratory Director Thomas C, Sneath, B,S, Chief Toxicologist 1100 California Ave. Bakersfield, California 93304 805 / 322-4250 800/350-3515 FAX 805/322-4322 Total Petroleum Hydrocarbons Gasoline ==========================================~.=========================== Thorne Environmental, Inc. 1830 Truxtun Ave., Ste. 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of Report.: Lab#: 10-Oct.-90 0926908-4 Sample Description: Project 3E-1.044 Sample #02806 Test. Method: Calif. DOHS Type of Sample: Soil Dat.e Sample Collected: 26-Sep-QO Dat.e Sample Rec'd @ Lab: 26-Sep-90 Dat.e Analysis Complet.ed: 09-0ct.-90 Const.ituent. Reporti ng Unit.s Analysis Result.s Minimum Report.ing Level Tot.al Pet.roleum Hydro- carbon as Gasoline ug!g .55..0 5,00 Comment.s: California D,Q,H.S. Cert.. #225 Dat.a Release Aut.horized v ,h / (i { 1/-~4l ~~t.i:~:~y ~ raboratories INC Naresh C, Jain, Ph,D, Laboratory Director Thomas C. Sneath, B,S. Chief Toxicologist 1100 California Ave. Bakersfield, California 93304 805 / 322-4250 800 / 350-3515 FAX 805/ 322-4322 BENZENE, TOLUENE, ETHYLBENZENE, XYLENES ------------------------------------------------------------------- ------------------------------------------------------------------- Thorne Environmental, Inc, 1830 Truxtun Ave., Suite 216 Bakersfield, CA 93301 Attention: Eric Greenwood Dat.e of Report: 10-Oct-90 Lab I: 092690B-7 Sample Description: Project. 3E-1044 Sample 102809 Test. Met.hod: EPA Met.hod 8020 Type of Sample: Soil Date Sample Collect.ed: 26-Sep-90 Dat.e Sample Received ~ Lab: 26-Sep-90 Dat.e Analysis Completed: 09-0ct.-90 Constit.uent. Reporting Unit.s Analysis Result.s Minimum Report.ing Level Benzene Toluene Et.hylbenzene Tot.al XyJenes ug/g Ilg/g IIg/g IIg/g N.D " 0,50 N..D. 2..04 0.0.5 0.0.5 0.0.5 0.05 Comment.s: California D,O.H.S. Cert. #225 N.D. = None Det.ect.ed Dat.a Releas" Authorized; ~4t \ ~~~i~~:~y g [aboratories INC. Naresh C. Jain, Ph,D. Laboratory Director Thomas C. Sneath, 8,S, Chief Toxicologist 1100 California Ave. Bakersfield, California 93304 805 / 322-4250 800 / 350-3515 FAX 805 / 322-4322 BENZENE, TOLUENE, ETHYLBENlENE, XYLENES ------------------------------------------------------------------- ------------------------------------------------------------------- Thorn~ Environmental, Inc. 1830 Truxtun Ave" Suite 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of Report: 10-0ct-90 Lab #: 092690B-9 Sample Description: Project. 3E-I044 Sample #02811 Test Method: EPA Method 8020 Type of Sample: Soil Date Sample Co1.lect.ed: 26-Sep-90 Dat.e Sample Recel. \led @ Lab.: 26-Sep-90 Dat.e Analysis Complet.ed: 09-0ct-90 Cons t.i tuent Re~orting Units Analysis Result.s Minimum Report.ing Level Benzene Toluene Ethylbenz.ene Tot.al Xylenes ugjg ug/g ugjg ug/g N. D. 0.10 N.D. 1.25 0.0.5 0.0.5 0.0.5 0.05 Comment.s~ California D.O.H.S. Cert. #225 N.D. = None Detect.ed Da t.a Release Aut.horÜed, ;11 ~1 '¡;~t.i:oi:~y ~ raboratories INC Naresh C. Jain, Ph.D. Laboratory Director Thomas C, Sneath, 8,5. Chief Toxicologist 1100 California Ave. Bakersfield. California 93304 805 / 322-4250 800 / 350-3515 FAX 805/322-4322 BENZENE, TOLUENE, ETHYLBENlENE, XYLENES ------------------------------------------------------------------- ------------------------------------------------------------------- Thorne Environmental, Inc. 1830 Truxtun Ave" Suite 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of Report: 10-0ct-90 Lab #: 092690B-14 Sample Description: Project. 3E-1044 Sample #0281.6 Test Method: EPA Method 8020 Type of Sample: Soil Dat.e Sample Co11ect.ed: 26-Sep-90 Da t.e Samp 1 e Received @ L.ab: 26-Sep-90 Date Analysis Complet.ed: 09-0ct-90 Const.it.uent. Reporh ng Unit.s Analysis Result.s Minimum Reporting Level Benzene Toluene Et.hylbenzene Tot.al Xylenes ug/g ug/g ug/g ug/g 0.25 0.06 N. D.. 2.55 0..05 0.05 0,0.5 0,0.5 Comments .: California D.O.H.S. Cert. #225 N.D.. = None Det.ected Dat·a Release. A'.lthorÜed: /4¡Þ1 '~~t.i:~:~y g raboratories INC. Naresh C, Jain, Ph.D. , Laboratory Director Thomas C, Sneath, B,S, Chief Toxicologist 1100 California Ave. Bakersfield, California ·93304 805 / 322-4250 800/350-3515 FAX 805 / 322-4322 BENZENE, TOLUENE, ETHYLBENZENE, XYLENES ------------------------------------------------------------------- ------------------------------------------------------------------- Thorne Environmental, Inc. 1830 Truxtun Ave., Suite 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of Report: 10-Oct-90 Lab #: 092690B-18 Sample Description: Project. .3E-1044 Sample #02820 Test Method: EPA Method 8020 Type of Sample: Soil Dat.e Sample Collect.ed: 26-Sep-90 Date Sample Received @ Lab: 26-Sep-90 Dat.e Analysis Completed: 09-0ct.-90 C:onsti t.uent. Report.ing Units Analysis Results Minimum Report.ing Level Benzene Toluene Ethylbem.:ene Total Xy1enes ug/g ug/g ug/g u9/9 N.D. N.D. N..D.. 0.15 0..0.5 0.0.5 0.0.5 0.05 Comments: California D.D.H.S. Cert. #225 N.D. - None Detect.ed Da t.a R e 1 ease Au t.ho r i. zed: C>MJiv~~ · ~~t.~~:~y ~ [aboratories INC. Naresh C. Jain, Ph.D. Laboratory Director Thornas C. Sneath, B,S, Chief Toxicologist 1100 California Ave. Bakersfield. California 93304 805 / 322-4250 800 / 350-3515 FAX 805 / 322·4322 Total Petroleum Hydrocarbons Gasoline ---------------------------------------------------------------------- ---------------------------------------------------------------------- Thorne Environmental, Inc. 1830 Truxtun Ave,. Ste, 216 Bakersfield, CA 93301 Attention: Eric Greenwood Dat.e of Report.: Lab#: 10-Oct.-90 0926908-9 Sample Description: Project 3E-.1.044 Sample #028.1.1. Test Met.hod: Calif, DOHS Type of Sample: Soil Date Sample Collected: 26-Sep-90 Dat.e Sample R.ec ' d @ Lab: 26-Sep-90 Dat.e Analysis Completed: 09-0ct.-90 Constituent Report.ing Units Analysis Results Minimum Reporting Level Tot.al Petrol.eum Hydro- carbon as Gasoline ug/g 73.0 5.00 Comments: California D.O.H.S. Cert. #225 Dat.a Release Authorized · '~~~i:~:~y g raboratories INC Naresh C. Jain, Ph.D. Laboratory Director Thomas C. Sneath, B.S. Chief Toxicologist 1100 California Ave. Bakersfield. California 93304 805 / 322-4250 800 / 350-3515 FAX 805/322-4322 BENZENE, TOLUENE, ETHYLBENZENE, XYlENES ------------------------------------------------------------------- -------------------------------------------------------------------- Thorne Environmental, Inc. 1830 Truxtun Ave" Suite 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of Report: 10-Oct-90 Lab #: 092690B-16 Sample Description: Project. 3E-1044 Sample #02818 Test Method: EPA Method 8020 Type of Sample: Soil Dat.e Sample Collect.ed: 26-Sep-90 Dat.e Sample Received @ lab: 26-Sep-90 Dat.e Analysis Completed: 09-0ct-90 Constit.uent. I Report.ing Unit.s Analysis Resul.t.s Minimum Report.ing L.evel 8enz.ene Toluene. Et.hylbenl.ene Tot.al Xylenes ug/g uglg ug/g ug/g 0.23 0.46 N.D. .3.21 0.0.5 0.0.5 0.0.5 0.0.5 Comment.s: California D.D.H.S. Cert. #225 N.D. = None Detect.ed Dat.a Release. Aut.horiz.ed: ! r I i:~t.~~:~y r ,Ii: ; iil') . ~ raboratories INC Naresh C, Jain, Ph,: Laboratory Director Thomas C. Sneath, E Chief Toxicologist l' 1100 California Ave. Bakersfield. California 93304 805 / 322-4250 800 / 350-3515 FAX 805/322-4 /' Total Petroleum Hydrocarbons Gasoline -.--------------------------------------------------------------------- ---------------------------------------------------------------------- Thorne Environmental, Inc. 1830 Truxtun Ave" Ste, 216 Bakersfield, CA 93301 Attention: Eric Greenwood Dat.e of Report: Lab#: 10-Oct.-90 0926908-2 Sample Description: Project. 3E-1044 Sample #02804 Test. Method: Calif.. DOHS Type of Sample: Soil Dat.e Sample Collect.ed~ 26-Sep-90 Dat.e Sam -")le Rec'd @ Lab: 26-Sep-90 Dat.e Analysis Complet.ed: 09-0ct-90 CansU. tuent. Reporting Unit.s Ana1ysis Results Minimum Report.ing Level Total Petroleum Hydro- carbon as Gasoline ug/g 59..0 5.00 Comment.s~ California D..O.H.S. Cert. #225 Data Release Authorized ~ [¡;] ational :: : '¡:'x' cology Ii hijl¡l. raboratories INC. Naresh C. Jain, Ph.D. Laboratory Director Thomas C. Sneath, 8,5. Chief Toxicologist 1100 California Ave. Bakersfield. California 93304 805/322-4250 800 / 350-3515 FAX 805/322-4322 Total Petroleum Hydrocarbons Gasoline ---------------------------------------------------------------------- ---------------------------------------------------------------------- Thorne Environmental, Inc. 1830 Truxtun Ave., SteM 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of Repo t- t. : Lab#: 10-Oct-90 092690B-7 Sample Description: Project. 3F-1044 Sample #02809 Test. Met.hod: Calif.. DOHS Type of Sample.: Soil Date Sample Collected: 26-Sep-90 Dat.e Sample Rec'd @ Lab: 26-Sep-90 Date Analysis Completed: 09-0ct-90 ConsU t.ue.nt. Report.ing Unit.s Analysis Result.s Minimum Report.ing Level Total Petroleum Hydro- carbon as Gasoline 119/9 2,35..0 .5.00 Comments: California D,O.H.S. Cert. #22.5 Data Release Authorized ,!;¡)t!/~ / P · '..National r;-, -. -I-ox· eology ~ raboratories INC. Naresh C. Jain, Ph,D. Laboratory Director Thomas C, Sneath, B.S. Chiet Toxicologist 1100 California Ave. Bakersfield, California 93304 805/322-4250 800 / 350-3515 FAX 805/322-4322 Total Petroleum Hydrocarbons Gasoline ---------------------------------------------------------------------- ---------------------------------------------------------------------- Thorne Environmental, Inc. 1830 Truxtun Ave., Ste. 216 Bakersfield, CA 93301 Attention: Eric Greenwood Dat.e of Report: L.ab#: 1.0-Oct.-90 0926908-12 Sample Description: Project. 3[-1.044 4 Test. Met.hod: Calif. DOHS Type of Sample: Soil Dat.e Sample Collected: 26-Sep-90 Dat.e Sample Rec'd @ Lab: 26-Sep-90 Date Analysis Completed: 09-0ct.-90 Const.ituent Reporting Unit.s Analysis Result.s Minimum Reporting L.evel Total Petroleum Hydro- carbon as Gasoline ug/g 488.0 5,00 Comments: California D.G.H.B. Cert. #225 Dat.a Release Aut.horized /l11J>tt~ ·~~t.i:~:~y ~ taboratories INC. Naresh C, Jain, Ph.D. ,Laboratory Director Thornas C, Sneath, B.S. Chief Toxicologist 1100 California Ave. Bakersfield, California 93304 805 / 322·4250 800/350·3515 FAX 805 / 322-4322 Total Petroleum Hydrocarbons Gasoline ====================================================================== Thorne Environmental, Inc. 1830 Truxtun Ave., SteM 216 Bakersfield, CA 93301 Attention: Eric Greenwood Dat.e of Report.: Lab#: 10-Oct-90 0926908-14 Sample Description: Project 3E-1044 Sample. #02816 Test. Method: Calif, DOHS Type of Sample: Soil Dat.e Sample Collect.ed: 26-Sep-90 Dat.e Sample Rec'd @ Lab: 26-Sep-90 Dat.e Analysis Complet.ed: 09-0ct.-90 Const.ituent. Report.ing unit5 Analysis Result.s Minimum Report.ing Level Total Petroleum Hydro- carbon as Gasoline ug/g 165.0 .5.00 Comment.s:. California D.O.H.S. Cert. #225 Dat.a Release Aut.horized µlÎh1~ '~~t.i~~:~y ~ raboratories INC. Naresh C. Jain, Ph.D. Laboratory Director Thornas C. Sneath, B.S. Chiel Toxicologist 1100 California Ave. Bakersfield. California 93304 805/ 322-4250 800/350-3515 FAX 805/322-4322 Total Petroleum Hydrocarbons Gasoline ---------------------------------------------------------------------- ---------------------------------------------------------------------- Thorne Environmental, lnc, 1830 Truxtun Ave" Ste, 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of Report.: L.ab#: .10-0ct.-90 0926908-16 Sample Description: Project 3[-1044 Sample #02818 Test Met.hod: Calif. DOHS Type of Sample: Soil Date Sample Collected: 26-Sep-90 Da t.e Sample Rec'd @ Lab: 26-Sep-90 Date Analysis Completed: 09-0ct-90 Const.it.uent Report.ing Unit.s Analysis Results Minimum Reporting Level Total Pet.roleum Hydro- carbon as Gasoline ug/g 132.0 .5,00 Commen t.s.: California D.O.H.S. Cert. #225 Data Release Authorized F(Ib~ . i:~t.~~:~y ~ raboratories INC Naresh C. Jain, Ph,D. . Laboratory Director Thomas C. Sneath, 8,S. Chief Toxicologist 1100 California Ave. Bakersfield. California 93304 805 / 322-4250 800 / 350-3515 FAX 805 / 322-4322 Total Petroleum Hydrocarbons Gasoline ===========================================~========================== Thorne Environmental, Inc. 1830 Truxtun Ave., Ste. 216 Bakersfield, CA 93301 Attention: Eric Greenwood Dat.e of Report: L.ab#: .lO-Oct.-90 0926908-1.8 Sample Description: Project. 3E-I044 Sam ')le #02820 Test. Method: Calif. DOHS Type of Sample: Soil Dat.e Sample Collected: 26-Sep-90 Dat.e Sample R.ec'd @ Lab: 26-Sep-90 Dat.e Analysis Complet.ed: 09-0ct-90 Cons t.i. t.uent. Report.ing Unit.s Analysis R,esu 1. t.s Minimum Report.ing L.evel Total Pet.roleum Hydro- carbon as Gasoline ug/g 66.0 .5.00 Comment.s: California D.O.H.S. Cert. #225 Dat.a Helease Atlt.hori.zed fIf~ 1 Case # U1 ;2¿'~DB ~·"n"'-Ðr -- p"@ I rl\Jl'\lu.. PROJ. NO. PROJECT NAME EHVIROHMrtHAl 3£> lO4+ NO. ~ L.P. NO. SAMPLERS: (Signalure/Number) (P.O NO) '7- f7.~ OF CON· DATE SAMPLE LD. SAMPLE LD. T AINERS TIME REMARKS MM/DDIYY HH:MM:SS RI"lh110 Gf bO ~ ùlð'O'3 Cß \ 5 \ I QI5'" 07.-)04 II X X 10 I 170 n -z ~()\ 1\ is" I Cf'/-ð OLKOG II -z..v \ X X Iqlf1 ó z 'tiT" 1\ -¿) \ 'i158 n1_ 'to 0 II - ;0 \ ló2!J O?.-¥ol ( I 3Ç I IX IX lOLl D O'Z~( 0 1\ LtO I //00 O~ ~ I I 1\ Lf-) I ~ IX /Î~ OL·~ I 1- \ \ ço I / /?iO 0'2 ~ I 3 [I sS" I /Jd!T 01.Si'j 4-' II 00 \ IX D( //55 01.. )( \ S- ( I to) \ IZ~O o -z ~ ¡(.." II 10 I IX rx ) 2 ZZ1 O-zr17 \I ,ç \ I : /1~ U'Z VI Ý ( ( Ko \ ~ rx !/~ 15 O'L-'6' I ~ (\ ~ç I \Ÿ I~ ~55· O'LnO ( \ q() \ IX IX ~ R'"j(;¿d~t&~ '%~r' ~.~~. y: ~'(J;;1 I Remarks ~ 10 Stir; {f -/ WILL.. CC\-L..{¡ lom912J2-D uJ ~~t~~t~;~~I;S To ~{c. GRœ~WDðp Relinquisheg/by: (Signllu..) D31Time Received y: (Sigllolu,e) Wl't1t tiN A(.,~S E<:> . THORNE ENVIRONMENTAL,INC. _. I ~30 11tV~\\)\\1 AvE ~ SU\TE Z\G Relinquished by: (Signllur., D31Tme Received tor Laboratory by: ßA\(~fta.D c 6A , Cr,301 (Signllure) \'.'~\iI {' ~'=1I·'I·I'·1 t.:t'1,Hì H(\III'" c(·, I \ ~~t., , .... ¡, II Pink L.1t~ CIII', . .. I ~ational r-=--1 . T oxjcology ~ I Laboratories INC. Naresh C. Jain, Ph.D. laboratory Director Thomas C. Sneath, B.S. Chief Toxicologist ,. D California Ave. Bakersfield, California 93304 805/ 322-4250 800 / 350-3515 FAX 805/322-4322 BENZENE, TOLUENE. ETHYLBENZENE, XYLENES -------------------------------------------------------------------------- ---------.-----------------------.------------------------------------------- Thorne Environmental! Inc, 1830 Truxtun Ave,! Ste, 216 Bakersfield! CA 93301 Attention: Eric Greenwood Date of Rep m-' t : l_<:t.b f:t: 21-Jan-91 011490B-1 Sample Description: Project 3E-l044 - Homeless Shelter Sample #03010 - 10' Test Method: EPA Method Modified 8020 Tvpe of Sample: Soil Date Sample Collected: 14-·J an-91 D¿'.t,? ~3¿'\lnp 1. E::' r:;:eceiv,:=-d IÊ l_ab: 1 ¿~-.] ,Õ:in -<71 Date Ptnal 'si::; Completed: 21-J an--91 Constituent Repüt-ti ng Units Anal YSi'5 Results Minimum Reportinq Level Benzene Toluene Ethylbenzene T·:)tal Xyl enes ug/g ug/g ug/g ug/g N.D, 0.05 0,05 0,05 0.05 1),45 54,07 16,32 Comments: California D.G.H.S. Cert. #225 N.D. = None Detected jJ¡~L Dat a Pel éë1.se Authot- i:: ed: fJ4;...µ-~~7----------------.-------------- i r'lat.ioD1al 0 . ,OX¡CO ogy I.iIïïïii.I Laboratories INC. Naresh C. Jain, Ph.D. Laboratory Director Thomas C. Sneath, B.S. Chief Toxicologist o California Ave. Bakersfield, California 93304 805 / 322-4250 800 / 350-3515 FAX 805/322-4:.!22 BENZENE, TOLUENE, ETHYLBENZENE, XYLENES --------------------------------------------------------------------- -------------------------------------.---------------------------------- Thorne Environmental. Inc. 1830 Truxtun Ave.! Ste. 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of F:epm-t: Lab #: 21-.J an'-91 011490B-3 Sample Description: Project 3E-1044 - Homeless Shelter Sample #03012 - 20' Test Method: EPA Method Modified 8020 Type of Sample: Soil Date Sample Collected: 14-Jan-91 Date S~hT1p 1 e F.:ecei \-ed iª Lab: l·.j.-LJ "-in -91 Date ?4nal VSi3 Comoleted: 21-Jan'-91 Constituent F:epot-t i rig Unit3 ~~nal y·:;i s Results 1'1 i n i mum F:eport i ng Level Benzene Tol LIEne Ethylbenzene Total Xylenes 2. ì t.. (1,05 0.05 0.05 (1,05 uq/I~ ug/g L1';:) / ,;:) ug/g N,D. 1. 44 11.05 Comments: California D.O.H,S, Cert. #225 N.D. = None Detected Da taRe I sa 5e All thori zed, _11J...fý14'J¡__________________________ l'~at.ionlal r:71 j'OX¡CO ogy ~ Laboratories INC. Naresh C. Jain, Ph.D. Laboratory Director Thornas C. Sneath, B.S. Chief Toxicologist 1 ) California Ave. Bakersfield, California 93304 805 /322-4250 800 / 350-3515 FAX 805 I 322-4322 BENZENE, TOLUENE, ETHYLBENZENE, XYLENES --------------------------------------------------------------------- -----------------------_.____0__.___-------.----------_________._______~____ Thorne Environmental, Inc. 1830 Truxtun Ave" Ste. 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of F:ep m- t : L¿¡.b #: 21'-~Jan-91 0114908-5 Sample Description: Project 3E-l044 - Homeless Shelter Sample #03014 - 30' Test Method: EPA Method Modified 8020 Tvpe of Sample: Soil Date Sample Collected: 14--J an-91 Date Samole Recei ved @ L",.b: 14-,] ¿\iì-'=? 1 Date Anal'/si'5 Comoleted: 21-Jan-91 Constituent Repol-t i ng Units Analysis Results t'1i n i mum Repm-t i ng Level ....,..-. r:::::"'"""I 1..::.....1..::. 0.05 0.05 0.05 0.05 Benzene Toluene Ethylbenzene Total Xylenes ug/g ug/g ug/g ug/g O. :32 37,51 8.70 Comments: California D.D.H,S. Cert. #225 N.D. = None Detected Data Rel~ase Autho~¡zed, _~~~-------------------------- 1- iat.iODlal ~ loxlcO ogy ~ . Laboratories INC. Naresh C. Jain, Ph.D. Laboratory Director Thornas C. Sneath, B.S. Chief Toxicologist 1 M California Ave. Bakersfield, California 93304 805 I 322-4250 800 I 350-3515 FAX 805 I 322-4322 BENZENE, TOLUENE, ETHYLBENZENE, XYLENES -------------------------------------------------------------------- ------------------------------------------------------------------- rho~ne Environmental, Inc. 1830 T~uxtun Ave., Ste. 216 ~ake~sfield, CA 93301 ~ttention: Eric Greenwood Date of PepOt-t: Lab #: 14·-,Jan-91 0114908-7 Sample Description: P~oject 3E-l044 - Homeless Shelte~ Sample #(:)3027 - 35' Test Method: EPA Method Modified 8020 Type of Sample: Soil Date Sample Collected: 14-Jan-91 Date Sample F:ecei ved @ Lab: 14-Jan-91 Date Anal'ysi s Completed: 14-,] an-91 Constituent RepOt-ti ng Units Analysis Results MinimulÏI RepOt-t i ng Level 7,03 0.05 <),05 0.05 0.05 Benzene Toluene Ethylbenzene Total Xylenes ug / i;1 ug/g ug /I;J ug/g N.D. 30,34 - c::"7 / , ..J.":' Comments: Califo~nia D.G.H.S. Ce~t. #225 N.D. = None Detected Da t a ReI ",ase Au th O~ i zed : -/l4~------------------------------ \> <: r~~t.i~~~~y g raboratories INC Naresh C. Jain, Ph.D. Laboratory Director Thomas C. Sneath, 8,S. Chief Toxicologist 1 ( California Ave. Bakersfield, California 93304 805 / 322-4250 800 / 350-3515 FAX 805 I 322-4322 ( BENZENE, TOLUENE, ETHYLBENZENE, XYLENES ------------------------------------------------------------------- --------------------------------.-------------------------------------- Thorne Environmental, Inc. 1830 Truxtun Ave., Ste, 216 3akersfield, CA 93301 Attention: Eric Greenwood Date of F:epot-t: Lab #: 21-Jan-91 011490B-8 3ample Description: Project 3E-I044 - Homeless Shelter Sample #03016 - 40' Test Method: EPA Method Modified 8020 Type of Sample: Soil Date Sample Collected: 14-.]an-91 D¿:~ te Samp 1 e ¡::;:ecei \led @ L3b: 14-.]an-91 Date Analysi5 Completed: 21-Jan-91 Constituent Repm-ti n';J Units Analysis Results 1'1i n i mLlm Repot-t i ng Level 8&?nz Ene Toluene Ethylbenzene Total Xylenes ug / I;) ug/g ug/g ug/g N.D. O. .32 2.78 1,09 0.05 (¡,05 0.05 1),05 Comments: California D.G.H.S. Cert, #225 N.D. = None Detected 0.. t.. R" 1 e.a se Au t h or< zed : -.l!1tÍt:d.~-------------------------- c; t¿~t.~~~:~y g . raboratories INC. Naresh C. Jain, Ph.D. Laboratory Director Thornas C. Sneath, B.S. Chief Toxicologist 0" California Ave. Bakersfield, California 93304 805 / 322·4250 800 / 350-3515 FAX 805 / 322-4322 BENZENE, TOLUENE, ETHYLBENZENE, XYLENES .-------------------------------------------------------------------- .----------------------------------------------.-----------.--------------- Ihorne Environmental, Inc. 1830 Truxtun Ave" Ste. 216 :akersfield, CA 93301 Itt.ention: Et"ic Greenwc)od Date of F.:epot-t: Lab t~: 21-Jan-91 0114908-10 ¡ample Description: Project3E-1044 - Homeless Shelter Sample #03018 - 50' Test Method: EPA Method Modified 8020 Type of Sample: Soil Date Sè.'dnp 1 e :011 ected: 14-Jan-91 Dat,:! Sample RE:ceived @ Lab: 14--,) an -'~ 1. Date Analysis Completed: 21-·]an-91 Const i tllent Repm-t i ng Units Analysi:; Results i"1i n i mum Reporting Level 8enzene roluene Ethylbenzene fotal Xylenes ug/g ug/g ug/g ug/g N. D, 2.78 0.89 8.99 0.05 0.05 0.05 0.05 Comments: California D.O.H,S. Cert, #225 N.D. = None Detected Da taRe 1 ea se Auth or i zed : -:Ji~ I( __________________________ / I ~'¡at.ional r:-71 .n oxrcology ~ aboratories INC. Naresh C. Jain, Ph.D. Laboratory Director Thomas C, Sneath, B.S. Chiel Toxicologist 1, California Ave. Bakersfield, California 93304 805/ 322-4250 800 1 350-3515 FAX 805/322·4322 BENZENE, TOLUENE, ETHYLBENZENE, XYLENES ======================;===========================~================ Thorne Environmental, Inc, 1830 Truxtun Ave., Ste. 216 3akersfield, CA 93301 Attention: Eric Greenwood Date of Repot-t: Lab #: 14-Jan-91 011490B-12 Sample Description: Project 3E-1044 - Homeless Shelter Sample #03020 - 60' Test Method: EPA Method Modified 8020 Type of Sample: Soil DatE.' S¿I,mpl e Collected: 14-a' an-'=¡' 1 Date Sample Received @ L::.b: 14-J¿\n-91 Date PInal )/';;i s Completed: 14-J an--91 Constituent Repm-t i ng Units Pmal vsi s Pesults Mi ni mL\m Repot-t i no;¡ Level Benzene Tc,l uene Ethylbenzene Total Xylenes ug/g ug/g ug/g ug/g 1,03 16.58 21.62 20.45 0.05 0.05 0,05 0.05 ClJmments: California D.O.H.S. Cert. #225 N.D. = None Detected Da taRe 1 E'ase All t h or i zed , 11'i.A4~----------------------------- ~ l~at.ional r:7I ~'. ,oxlcology LiIïii.I . Laboratories INC. Naresh C. Jain, Ph.D. Laboratory Director Thomas C. Sneath, B.S. Chief Toxicologist 1) California Ave. Bakersfield, California 93304 805 I 322-4250 800 I 350-3515 FAX 805 I 322-4322 BENZENE, TOLUENE, ETHYLBENZENE, XYLENES -----------------------------------------.----------------------------- .----------------------------------------------------------------------- Thorne Environmental, Inc. 1830 Truxtun AVE" Ste. 216 Bakersfield, CA 93301 Attention: Er-ic Gr-eenl-o¡ood Date of Report: Lab #: 14-,} an-91 011490B-14 Sample Description: Project 3E-l044 - Homeless Shelter Sample #03023 - 75' Test Method: EPA Method Modified 8020 Type of Sample: Sail Date Sample ColI E·cted: 14-Jan-91 Date Sampl,? Recei VElj @ Lab: 1.q·-.] an-91 Date Analysi:; Completed: 14-Jan-91 Constituent Repor-t i ng Units P¡nal y':; is Results t'1 i n i mum Repor-t i ng Level 5.54 0.05 0.05 0.05 0.05 Benzene TCIl uene Ethylbenzene Total Xylenes ug/g ug/g ug/g ug/g N,D. 4.16 20.70 Comments: California D.O.H.S. Cert, #225 N.D. = None Detected Da taRe 1 ease Auth Dr 1 zed , -lU~L;_--------------------------- ~ t¿~t.i~~:~y g raboratories INC Naresh C. Jain, Ph.D. Laboratory Director Thomas C, Sneath, B.S. Chief Toxicologist C California Ave. Bakersfield. California 93304 805 / 322-4250 800 / 350-3515 FAX 805 / 322-4322 BENZENE, TOLUENE, ETHYLBENZENE, XYLENES ------------------------------------------------------------------- ----------------.---------------.--------------------------------------- Thorne Environmental, Inc. \830 Truxtun Ave., Ste. 216 :akersfield, CA 93301 "H:tention: Et-ic Î3t-eem..¡ood Date of Rep'::¡rt: Lab #: 21-.]an-91 011490B-15 3ample Description: Project 3E-I044 - Homeless Shelter Sample #03024 - 80' ~est Method: EPA Method Modified 8020 Type of Sample: Soil f),",te Samp 1 e :;011 E·ct.ed: 1 't-J an-91 Dat'2 Sample f;:ecei ved @ La.b: 14-·J an-91 Date Analysis ComDleted: 21-Jan-'71 Constituent Repm-t i ng Units AnalY3is Results 1"1i n i mum Reporting Level 8t?~nz Ene Toluene Ethylbenzene Total Xylenes ug/g u 9 / ';I ug/g ug/g O. 18 0,05 0.05 0.05 0.05 (J.. 22 N,D. 0.31 Comments: California D.O.H,S. Cert. #225 N.D. = None Detected Data Release Authorized, _~~------_.---------------------- ,~aiion, al 771 1ox· cology ~ . raboratories INC. Naresh C. Jain, Ph.D. Laboratory Director Thomas C. Sneath, B.S. Chief Toxicologist 1 , California Ave. Bakersfield, California 93304 ' 805 / 322-4250 800 I 350-3515 FAX 805 I 322-4322 BENZENE, TOLUENE, ETHYLBENZENE, XYLENES ----------------------.-------------------------------------------------- ------------------------------------------------------------------------- Thorne Environmental. Inc, 1830 Truxtun Ave., Ste. 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of Report: 21-Jan-91 Lab #: 0114908-17 Sample Description: Project 3E-I044 - Homeless Shelter Sample #03026 - 90' Test Method: EPA Method Modified 8020 Type of Sample: Soil Dëtte Sampl e Collected: 14-J an-"7' 1 D¿tte Sample Reèeived @ Lab: 1 ,t-.] an-91 Date ;nal ysi s Ce:,mp 1 eted: 21-·Jan-91 Constituent Repcwting Units Analysis Results Minimum F:epoy-t i ng Level Benzene Tal u.ene Ethylbenzene Total Xylenes ug/g ug/g ug/g ug/g 0,21 N.D. N.D. 0.77 0.05 0.05 0.05 0.05 CDmments: California D,O.H,S. Cert. #225 N.D. = None Detected Da taR" 1 ,,~"" Auth DC i zed, 4¿1.k4--------------------------- ·' g ~- ~ational . lox· cology ~I ;, : I. . taboratories INC. Naresh C. Jain, Ph,D. Laboratory Director Thornas C. Sneath, B.S. Chiel Toxicologist t f'(! California Ave. Bakersfield, California 93304 805/ 322-4250 800 / 350-3515 FAX 805/322-4322 Total Petroleum Hydrocarbons Gasoline ------------------------------------------------------------------------- ------------------------------______0______-----------_________________________ Thorne Environmental, Inc, 1830 Truxtun Ave., Ste, 216 Bakersfield, CA 93301 Attention: Eric Greenwood Da.te of Repot-t: Lë'.b #: 21-Jan-91 011490B-1 Sample Description: Project #3E-1044 - Homeless Shelter Sample #03010 - 10' Test Method: Calif, DOHS Tvpe of Sample: Soil Date Saiilplo:?' Collected: 14-Jan-91 Date S¿~iÏ1p 1 e ¡;:ec . d @ La.b: 14-J an--91 Date Analysis Completed: 21-J ¿m-91 Constituent F.:epot- t i ng Units Anal Y'5i s Results 1'1i n i mum Reporting Level Total Petroleum Hydro- carbon as Gasoline ug/';:! 1 1)2L1·, I) 5,00 Comments: California D.G.H.S. Cert. #225 Data Re 1 ease ALl t h or; z ed ./.1:J.&d~------------------ .~~t.~~:~y g raboratories INC. Naresh C. Jain, Ph.D. Laboratory Director Thomas C, Sneath, B.S. Chief Toxicologist i 100 California Ave. Bakersfield, California 93304 805 / 322-4250 800 / 350-3515 FAX 805/ 322-4322 Total Petroleum Hydrocarbons Gasoline -------------------------------------------------------------.------------- -----~----------------------------------------------------------------------- Thorne Environmental! Inc. 1830 Truxtun Ave., Ste. 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of R¡,::por-t: Lab #: 21-Jan-91 011490B-3 Sample Description: Project #3E-l044 - Homeless Shelter Sample #03012 - 20' Test Method: Calif. DDHS Type of Sample: Soi I Date Sample Collected: 14-Jan-91 Date Sample Rec'd @ Lab: 14-.]an-91 Date An¿d ysi s Completed: 21-Jan-91 Constituent R",,'pm-ti ng Units f-"',nal ysi s Results Minimum Repc,rt i f1g Level Total Petroleum Hydro- carbon as Gasoline u9/9 51.0 5.00 Comments: California D.D.H.S. Cert, #225 Data Release Authorized ~1I~~_------------------ ~~i:~:~y g raboratories INC. Naresh C. Jain, Ph.D. Laboratory Director Thomas C. Sneath, 8.S, Chief Toxicologist ¡¡.: 'nia Ave. Bakersfield. California 93304 805 / 322-4250 800 I 350-3515 FAX 805 / 322-4322 Total Petroleum Hydrocarbons Gasoline ------------------------------.---------------------.-----,---------------- ---------------------------------.---------------.--------------.--------- ~ ne Environmental, Inc, 3v Truxtun Ave., Ste. 216 kersfield, CA 93301 t 'nt ion: Er i c Gt-eem'llood Date of Repc)t-t: Lab #: 14·-Jan-91 011490B-7 mple Description: Project #3E-l044 - Homeless Shelter Sample #03027 - 35' st Method: Calif, DOHS Type of Sëo,mple: Soil \ \:e S.",mp 1 e J. . ected: 14-Jan-91 Dati? SaiTlD 1 e Rec 'd ,ª Lab: 14-.] an-91 Ddte ,'::\na.l \/5i ':oj Completed: 14-Jan-91 Y"sti tuent Repm-t i ng Units Analysis Results Minimum Reporting LevE·l J~al Petroleum Hydro- ~rbon as Gasoline ltg/IJ 297. (; 5.00 omments: alifornia D.O.H.S. Cert. #225 ......:a Release ALlthm-L::ed ----------------- ~~t.i:~:~y g . taboratories INC. Naresh C. Jain, Ph.D. Laboratory Director Thomas C. Sneath. 8.S. Chiel Toxicologist 100 California Ave. Bakersfield. California 93304 805 / 322-4250 800 / 350-3515 FAX 805/322-4322 Total Petroleum Hydrocarbons Gasoline --------------.----------------------------------.------------------------ ----------------------------------------.------------------------------------ Thorne Environmental ~ Inc. 1830 Truxtun Ave., Ste, 216 3akersfield~ CA 93301 Attention: Eric Greenw60d Date of Repm-t: Lab #: 21-Jan-91 0114908-8 Sample Description: Project #3E-1044 - Homeless Shelter Sample #03016 - 40' Test t'1ethod: Calif, DOHS Type of S¿'.mple: Soil Date S.:'Imp 1 e Collected: 14-,J an-91 Date Samole F.:ec 'd @ Lab: 14-Jan-91 Oat,;? t~nal ysi s Comoleted: 21-,Jan-91 Constituent Repc:wting Units Anal':/s is F.:esLlI t s t'1i n i mum Repm-ti ng Level Total Petroleum Hydro- carbon as Gasoline ug/';) 224,<) 5.00 Comments: California D.O.H.S. Cert, #225 Data Release Ac.thodzed _~~--_--___-_----- " 'J-,~iational ,.--, lOX· cology ~ raboratories INC Naresh C. Jain, Ph.D. Laboratory Director Thomas C. Sneath, B.S. Chief Toxicologist 100 California Ave. Bakersfield. California 93304 80S / 322-4250 800 / 350-3515 FAX 805/322-4322 Total Petroleum Hydrocarbons Gasoline ..------------.-.-----------------------------------------_._--------_._--_._~-- -..-----------------------------.----------------.-.----------------------------------- -horne Envi t-oniitental, Inc, 1830 Truxtun Ave" 8te, 216 Sakersfield, CA 93301 D¿.. t e D;: Repat-t: 22-J ¿In-91 0114908-j.0 Lab #: :;ttention: Et- i c C3n:?enwood Sample Description: Proiect #3E-l044 - Homeless Shelter Sample #03018 - 50' T'2,,,,,t Method: Cëd if. DOHS T,,'oe 01: S2.fí!ole: E:oi 1 D:lt,=:! :;.:1mple Collected: 1 -t-.J ¿~n-'7'1 Date Sample Rec "d (~ Lab: H--,],3.rl-91 D.::\te I~nal 'l3i s Completed: 14-J an'-91 Constitu.ent F:eport i rig Units Analysis Results 1'1i n i mum Reporting LevE,l Total Petroleu.m Hydro- carbon as Gasoline u.g/g 92.0 5. ()() Comments: California D.O,H.S. Cert, #225 Data ReI e~se Autlìm- i;: ed _____:~~______________ 'l~~t.~~:~y g . raboratories INC Naresh C. Jain, Ph.D. Laboratory Director Thornas C. Sneath, B.S. Chief Toxicologist 1100 California Ave. Bakersfield, California 93304 805 / 322-4250 800 / 350-3515 FAX 805/322-4322 Total Petroleum Hydrocarbons Gasoline ---------------------------.------------------------------------------------ -.---------------------------------.--.--------------------------------------- Thorne Environmental, Inc. 1830 Truxtun Ave., Ste. 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of Repot-t: Lab #: 14-.J an-91 011490B-12 Sample Description: Project #3E-1044 - Homeless Shelter Sample #03020 - 60' Test Method: Calif. DOHS Type of Sample: Soil Date Sample Collected: 14-Jan-91 Date :3':"=\I11p 1 e Rec'd @ Lab: 14-Jan-91 Date An,:!l ysi s Completed: 14-,Jan-91 Constituent Reporting Units Anal Yo:; is ResLll ts 1'1i n i mLUn Reporting Level Total Petroleum Hydro- carbon as Gasoline ugíg 258. () 5.00 Comments: California D,O.H.S, Cert. #225 Data Release Authodzed l~---------------------- ., ~ational r--1 i,ox· cology ~ . raboratories INC Naresh C, Jain, Ph.D. Laboratory Director Thornas C, Sneath, B.S. Chiel Toxicologist 1 ^') California Ave. Bakersfield. California 93304 805/ 322-4250 800 / 350-3515 FAX 805/322-4322 Total Petroleum Hydrocarbons Gasoline --------------------------.--------.------------------------------------ -----------------------.------------------------------------------------------ Thorne Environmental, Inc. 1830 Truxtun Ave., Ste. 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of Report: Lab #: 14-Jan-91 . 0114908-14 Sample Description: Project #3E-1044 - Homeless Shelter Sample #03023 - 75' Test Method: Calif. DOHS Type of SCI.mple: Soil Date S.3mple Collected: 14-Jan-91 Date Sample Rec',j @ Lab: 14-Jan-91 Date Analysis Completed: 14-Jan-91 Constituent Reporting Units Anc.Ü ysi s Results Minimum Repot-t i no;¡ Level Total Petroleum Hydro- carbon as Gasoline u.g/g 419.0 5.00 Comments: California D.G.H.S. Cert. #225 Data Release AuthDrized JA/k1~--------------------- '" .: ~ational r---1 lox· cology ~ . raboratories INC Naresh C, Jain, Ph,D. Laboratory Director Tho,mas C. Sneath, B.S. Chief Toxicologist 1 . "0 California Ave. Bakersfield. California 93304 805 I 322·4250 800 I 350-3515 FAX 805 I 322-4322 Total Petroleum Hydrocarbons Gasoline ------------------------------------------------------------------------- --------------.------------------------------------------------------------- Thorne Environmental, Inc. 1830 Truxtun Ave., Ste. 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of RepOt-t: Lab #: 21-·J an-91 0114908-15 Sample Description: Project #3E-I044 - Homeless Shelter Sample #03024 - 80' Test Method: Cal if.. DOHS Type of Sè:i.mp 1 e: Soil Date Sample Collected: 14-Jan-91 Oat·:? Sample Rec 'd @ Lat): 14-Jan-91 Date Analysis Completed: 21-J ¿m -91 Constituent Reporting Units Analysi:ö Results Minimum Reporting Level Total Petroleum Hydro- carbon as Gasoline ug/g None Detected 5.00 Comments: California D.O.H.S. Cert. #225 Data Release AuthD,ized _111~~------------------- ... .' g i r' ~ational ',' lox· cology .1;, ,;; I. . raboratories ¡!'IC Naresh C. Jain, Ph.D. laboratory Director Tho~as C, Sneath, B.S. Chiel Toxicologist 1 · "0 California Ave. Bakersfield, California 93304 805/ 322-4250 800 / 350-3515 FAX 805/322-4322 . Total Petroleum Hydrocarbons Gasoline ------------------------------------------------------------------------- ----------------------------------------------------------------------- Thorne Environmental, Inc, 1830 Truxtun Ave., Ste. 216 Bakersfield, CA 93301 Attention: Eric Greenwood Date of Repot-t: 'Lc3.b #: 21-c1an-91 . 011490B-17 Sample Description: Project #3E-1044 - Homeless Shelter Sample ~03026 - 90' Test Method: Calif. DOHS Type of Sample: Soil Date Sample Collected: 14-Jan-91 Dc::lte Sample Rec'd @ [_ab: 14-.] an-'=j' 1 D¿\1:e Analysis Completed: 21-·] an-91 Constituent Repm- t i ng Units ¡:'nal ysi':; Results Minimum Repot-ti ng Level Total Petroleum Hydro- carbon as Gasoline ug/g 42.0 5.00 Comments: California D,O.H.S. Cert. #225 Data Release Authorized _~j~------------------ .._-~-- .-- - - - - - , PROJ. NO. PROJECT NAME I;;.. ~ '3f -104+ \\ O\'\-It Lé: 'S S S\\£L1l\Z NO, '-~ J\jì ,,# Ir I J', rI Le 'i:¡'-J L.P. NO. SAMPLERS: (Si!jllaluIC/Numl>.,,) '" .'j (P.ONO.\ OF ~, \ It o l{ c\ 1.1 ß - I Ü.t ,\", / Sí i\L Y I; 1\\;;\-\ K ..... 'V ..., CON· .;;:-Y i cw. ç (.. \ ; " ( I. . DATE SAMPLE 1.0. SAMPLE 1.0. T AINEAS Y ~\ I REMARKS'\ ." TIME ~)4> MMIDD/YY liH:MMSS I/lt ql ~~eerl Ce)-b--~- -t-. - r-- G13S"" 03010 10' X 'I P - (. LrD 03DII ,S'I I /) ¿ c I~Ç 0'0 I ~ 1ö' X X J q S'ç n'hO I, 1<' I Iq lOOt; () 'Ai) \ I{ í-¡d I .X X - c , _D IO/S-:- v . 3S- éb () =) () I (~ - / II Of) ( ) ~ OprJ.. ¡¡:; ~ ~35 X X - '24- H K.. 1\) v.. N f\-f( ú Ù I')f) *t.. 1 r II /e;} o 30 I 0 LfO J X- X - ~ f 1330 ()5òJ 7 {jÇ" I c /3Ço ()':30/f' 5'-0 I .^,\ X - I ~ (il 00 IO-:l¡ ()I 1 cc; I - / I ./. I 147 Ù I/);; /)2 [) t:¡t) I IX IX - I :L 'ZA- \I ~ . -t VV N A~()ÙND *" ¡ II- :;.ç- II) ~oZ I foÇ I ~ I .) . ·14 [icJ-·-- (') ~D:¡?'- ----=10'--' 1.--- '.'- -._-... -. .-- --- --.- - - . .-' "'- -- ..- .-- - --- ;1:). -., --.--- Ir- 00 01D7 ::s í5 I Ix rx - I j 24-- H~· \LJ(lt~AK()U N.D ~. í'/ 15/Ç' () 3D 14- ?D I Y ',/ I - Å. -- ') . , J :; .;'() O:;oZ ç ~ç - ( .; d¡ I ('JOO éJ3DZ¿ crt:) '. ../ 'x , 7 Î '''''. "..... J - Rne d b~: (s'gnalu'e' Date/Time X:D:~~'~~'·; í \ Remalk5 Send Results To 51 He Y r-) Î-\ tJ i ~, I 'I,~ I <),14 --11 f+-' .~ SÄtì1Yl. t S. -ç:o ï2. 24 H~, Atlenlion 01 \lt~t~Úf\ THORNE ENVIRONMENTAL. INC. Relinquished by: (Signalu'e) Daterme Recrivid by: fSigllltui;j.:. J-/ '\ ufLlJ r\ ~oUNP \1,30 1 ¡¿'VY-l v,-J "~I.: ¡-..\0t '~0 (\ l l \ "'.- \A\ rJ: "'~-...rl (:lP i (.A, . CF),O\ Relinqui5hed by: (Sìgnllu'e Dalerme Received lor Laboratory by: (Sign_lu,o) 3U ' 0492 ) ~ ~~ ÚI;":r'~Ú.-l~c~"Ÿ.:;~1 i While· Sa'lIpltf Call,]ly . RUluln Copy 10 Shipper Pink Lab Copy ; , ~ ~. ù210 CHAIN OF CUSTODY PROJ. NO. PROJECT NAME ~).)~.J \ 1') A-A L\ D\\\ L r- \ ~ \. T I \ . i L ,F~{':> :..; I- . t l1t ¡~ L.P. NO. (p.O. NO,} ~~ CI ( _·1, I', '1 SAMPLERS: (Signature/Number) br\U\f2... OA TE SAMPLE 1.0, TIME MM/DD/YY HH:MM:SS 1-)C,-1\ 10': 20 1\..__.- _ _ ._. i' I' " Rel.lnquished by,: (~ign'lur.¡ I,' I I G I " ~' p.; I i I . ~,I /. il~J',í " ". . \ ,I :, tV .. n Relinquished by: ISignlture, Relinquished by: (Signlture¡ ! :,' 1'')'''7 A SAMPLE I.D. ~ DÎJI)¿ 'h (0 - 3 ~îJ1UZ-fél· '--ct;=-')- \ D~te ¡/Time I r. \' \I'l :' \ ,. oa'Tme oalerme WhIle· Sampler . NO, , \ OF !' lJ?: i CON, j'~ ¡ TAINERS V X 0 , 'hQ'1,J'l ,) ~c;l l 'IJY '1-¡j-&-· -\ .-- " Re.::eived bY: j8;gnJ"ure, ;' ) /t/~ t ! 'j' . I ' ,'~' / . / / / /Jt.1</!.rj ,!Jl'I.I:i/ _ Received by: (~i91\1Iur. j Remarks Received lor 4aboralory by: (Signllure) i Cana,} AAlurn Copy To ShIPP'!r NIJ.:té O//~7/)ll( . ~~f I: :utI'" ~ ~ ENVIRGNMENTA \ '. '1 REMARKS ~- - .. '. . - i I I ( I Send ~esulls To c.:T A" v l?At::',11 V' ÄI\enlton of ,;J I l 1 C r- - THORNE ENVIRONMENTAL,INC. \ '&)0 1ytùi-1ùw f\~8JUË l' Z\G, 5A\l'-(~:X(HD I LA. t{?J?O I ,-............... ~..'T "........"'!I""""I ~~'T..-..rr""I,.....,~...... Pin ,; Lah Cnpv i· APPENDIX B " CHEMICAL ANALYSES SAMPLE >- u) , laboratorY Field J:'" CI 31- a: 0 .% WELL Benzene PID 0% I-. J w J OCl J=> n.1 m 0 H SOIL DESCRIPTION CONSTRUCfION TPH(gasoline) mO w' I: J: 'en 0 o\. => I- enw ..... H ::50 % .J .~ :.. 0 .' ,. SM ... :..:. .. .. :-.:. ... :..:. .. ... :'.:. " .' . . ... :'" " .. ... :':. .' ... :.:. .' .' ... :-.:. .. 5 .' .. :..:. - 2803 .. NA 653 13 .' SILTY SAND, fme to medium ... :-.:. .' grained, tan, dry, moderately well .' .. :'.:. sorted, unconsolidated, slight HC .' 4- :... .. odor ... :'.. I .. J ... :... .' .<. , ... :.. I I ... :... SW I ï ... .... i ... 10 I :.. ND/59 O.R. 24 2804 SAND, medium grained, moderately ... ! :.. sorted, HC odor, slightly moist - ... .:. ... :... I - ... .... ... .... - ... :... Becoming more coarse ... .... - ... :.... .,¡, :.. - 15 - .,¡, Solid PVC NA 1171 27 2805 SAND, as above, medium to coarse ..... pipe with grained, pebbly, HC odor, musty ... :.. cement ... :.. backfill .,¡, :.. ... '.-£ - .... SM ... :... .' ... :... .. .. ... :.. 20 - ... .. ND/55 O.R. 30 2806 SILTY SAND, fine to medium .... :.. grained, tan, unconsolidated, dry, HC odor ... :.. ... ..... ... :... .. .. .,¡, ...... .' ... ..... r ... :.. SW ... 25 Surface Elevation: feet Logged By: S, BAEHR Total Depth: 91.5 feet Supervised By: E, GREENWOOD Diameter of Boring: 8" inches Date Drilled: September 26, 1990 Water Encountered at: feet , ....... HOMELESS SHELTER, 1600 E, TRUXTUN PLATE ~r?\;';:::::¡:: THORNE ENVIRONMENTAL, Inc. ::~. ?::.~.:::::.:./: "TREATMENT BY DESIGN" LOG of BORING ........ CB-J Proicct Numher 3E-1044 October 1990 Page lor 4 .. .. CHEMICAL ANALYSES SAMPLE >- Laboratory Field X" (! cñ . 31- 0: 0 .Z WELL Benzene OZ I-'µ W J o(! CONSTRUCfION PID J:J Q.. ID 0 H TPH(gasoline) IDO W · 1: X .(1) SOIL DESCRIPTION 0 o~ :J I- II)w Z H ::)0 J - :.:" NA O,R. 36 2807 SAND, coarse grained with 1/4" ... :':. pebbles, unconsolidated, poorly ... :.:" sorted, HC odor ... :':. ... :.:" i ~ Solid rvc SM pipe with .' .' 1 bentonite .' .... j :::-: plug I ",-~ - 30 .... - :-.;~ NA O.R. 90 2808 SILTY SAND, medium grained, tan .' .' :-'~ .' to rust, dense, slightly moist, HC '.:~ .- - :-.;~ odor ;'.;::; .' - . . : '1- " . : I- ;':~ :-.~ .' '.:~ ;'.;~ '. . '. '1- .' :.:~ 35 2809 - :-:~ ND /235 O.R. 90 " SILTY SAND, as above, HC odor ;',:~ .' : '1- ': l- I- -Ë I . ..... :.' .1- ,. 'I- '.: i- :,'- .:- ::. - :- - 40 2810 " - NA O.R. 12 SILTY SAND, as above, HC odor ',:- '-.': ":_',' ,.'-." ,:- := ,,' .'- :':.- ~:.. " ~ ~ ~ " ~ .'. ~ - 45 '~..' Slotted PYC ND/73 O.R. 22 2811 SILTY SAND, as above, HC odor ~ ~ pipe with E sand backfill I- .: ,.... ..' : : " :,: - , :-'.... '.: - : : . . 50 2812 : : NA O.R. 28 SILTY SAND, as above, HC odor : : -,:" -' .' ~:/ /:·:i::·::':tHOHNE ENVIRONMENTAL Inc. HOMELESS SHELTER, 1600 E, TRUXTUN PLATE :::::.:..,t:~.:::,. ::: ' LOG of BORING .:: :::"::'. :.:.:.:.:.:.' "TREA TMENT BY DESIGN" ........ CB-l Project Number 3E-I044 October 1990 Page loc 4 ·. CHEMICAL ANALYSES SAMPLE >- . Laborato Field :I:..... C! (/' , 3~ 0: 0 ,Z WELL OZ ~~ UJ .J oC! CONSTRUcrION Benzene PID .J::> n." I[) 0 .... TPH(gasoline) I[) 0 UJ- 1: :I: .(/' SOIL DESCRIPTION 0 at ::> ~ (/' UJ Z .... ::)0 .J .' " 55 .' :.-:. Slotted PVC NA O.R. 40 2813 SILTY SAND, as above, HC odor ::.:. pipe with " .' ::.-, sand backfill .' .' I j .' j I .' 60 j 0.25/488 O.R. 48 2814 .' SILTY SAND, as above, HC odor I ! , . SW 65 2815 NA I O.R. 57 SAND, medium to coarse grained, reddish tan, pebbly, HC odor 0.25/165 O.R. 24 70 2816 SAND, as above, clayey ML NA O.R. 28 75 2817 SILTY SAND, fine to medium grained, reddish tan, clayey, moist SM 0.23/132 O.R. 50 80 2818 SII..: TY SAND, fine to medium !t;:~i!!~Jti0RNE ENVIRONMENTAL, Inc. :: ,:::,:::<:::::,::.:, "TREA TMENT BY DESIGN" HOMELESS SHELTER, 1600 E, TRUXTUN LOG of BORING CB-l PLATE Pro·ect Number 3E-1044 October 1990 Page 30r 4 " CHEMICAL ANALYSES SAMPLE >- .,; . . Laboralo Field X" CJ WELL 3'- .-~ 0: 0 ,Z Benzene oZ IIJ J 0° CONSTRUCfION PID J:J 0.- m 0 H TPH(gasoline) mO IIJ- I: J: . If) SOIL DESCRIPTION 0 o~ :J .- If)IIJ Z H :)0 J i sorted, micaceous, HC odor .' I ~ 'I .'. I , .'. I . .' · . .' .' . . · , 85 2819 NA 420 56 Lost first sample .'. . . .', . SILTY SAND, fme to medium grained, gray to tan, moderately sorted, pebbly, micaceous, · . unconsolidated, slight to HC odor .' . . ND/66 745 90 2820 60 .' SILTY SAND, as above, HC odor H C = Hydrocarbons O.R. = Over Range (greater than 2000ppm) 95 100 105 ::¡).:.~}~ORNE ENVIRONMENTAL, Inc. .: ':'::::::;::;: "TREATMENT BY DESIGN" HOMELESS SHELTER, 1600 E, TRUXTUN LOG of BORING CB-] PLATE Pro'cel Number 3E-I044 October 1990 Page 40r 4 j' CHEMICAL ANALYSES SAMPLE >- Iñ ' . Laborato Field J:" CJ WELL 3~ ~+J It 0 Z Benzene HNU oZ w .J 'CJ CONSTRUCTION .J;;) 0. QI m 0 UH TPH (Gasoline) mO w- I: J: Iñlf) ppm ppm 0 o~ ;;) ~ ,w Z H ;;)0 .J 0 ML SOIL DESCRIPTION SPUD 8:35 AM SANDY SILT, brown NA ND 14 5 2750 SANDY SILT, fine grained, brown to tan, micaceous, slightly moist, no odor, slightly pebbly NA 10 ND 9 2751 SW SAND, medium grained, brown to tan, micaceous, pebbly, no odor, I slightly moist I - -' Backfill with NA 15 ND 22 2752 SAND, gray, unconsolidated coarse cement grained, dry, musty odor bentonite slurry NA 16.2 50 20 2753 ' SAND, as above, slight odor 25 Surface Elevation: Total Depth: Date Drilled: feet 41.5 feet August 28,1990 Logged By: Supervised By: Diameter of Boring: Water Encountered at: S, BAEHR E, GREENWOOD 8" inches feet THORNE ENVIRONMENTAL, Inc. "TREA TMENT BY DESIGN" HOMELESS SHELTER, 1600 E. TRUXTUN LOG of BORING CB-2 PlATE Pro·ccl Number 3E-l()44 Februan 1991 Page lof 2 ,. CHEMICAL ANALYSES SAMPLE >- cñ ' Laboralo Field :x: " C 3.... It a Z WELL Benzene IINU aZ ....,µ W J 'c CONSTRUCfION J;:) D. · m a °H TPII (Gasoline) ma W- I: :x: 'II) SOIL DESCRIPTION ppm ppm 0 0.... ;:) .... II)w ..., H :50 Z ..J ND /20 5641 59 2754 SAND, as above, moderate odor ML NA 804 80 30 2755 SANDY SILT, very fine grained, slight odor NO /ND 175 70 35 2756 SANDY SILT, as above NA 6.0 40 2757 SANDY SILT, as above 45 50 :t:':¡::~$ti0RNE ENVIRONMENTAL, Inc. ::, ~t\::;:::;';';,::· "TREA TMENT BY DESIGN" HOMELESS SHELTER, 1600 E, TRUXTUN LOG of B OR I NG CB-2 PLATE Pro·cet Numhcr 3[-1044 Februa 1991 Page 20r 2 ~ ,,-~ WELL CONSTRUCTION ."",,: :'.. .. . :... ... : .:. .. . :... - :.:" - :,:" ... :~ .. . :... .. :~ ... :~ .. :.:" .... . :... ... :..:. .. :.:" .. .:" ... :.,;. ... :..:. ... :..:. .. .:" 2" PVC : :... WITH ... CEMENT .. :.. GROUT 4- ::-_ ... >- .... ..... 4- :"4 .... :'" .. :.:,. - :'''' ... :... BENT SEAL : : '. .. _.' - -. _:. -.' -',' =:' -.: -.' 2" - : SLOITED : PVC WITH #3 SAND - ::' - . Surface Elevation: Total Depth: Date Drilled: CHEMICAL ANALYSES Laboratorv Field:3 I- Benzene HNU g 5 TPH (Gasoline) m 8 ppm ppm NA ND J:" .....¡.J a. II w· 0'" ..., o 5 17 10 ND/1024 400 28 15 NA 20 20 25 f:::i:'!~'::::::~: THORNE ENVIRONMENTAL, Inc. ::, ::,::;~:::::::~.:.:::, "TREATMENT BY DESIGN" Proiect Number NO/51 500 27 feet 96.5 feet January 15, 1991 3E-I044 Februan' 1991 SAMPLE >- CJ 0: 0 W -' m 0 I: J: :J I- Z ~ 3010 · . 3011 3012 , . 3013 " : .' .' · ' .' .'. , . .'. , ' · . .' .' : , . · . · . , . > " · . ~'. ':--.;' " rñ . .. ,z oS ·en enw :50 SOIL DESCRIPTION SPUD 9:25 AM SM SAND, silty, brown, moist, no odor, contains asphalt chunks (No Sample Recovery) SP SAND, medium to coarse grained, brown to gray, dry, loosely consolidated, micaceous, HC odor SAND, as above, pebbly, HC odor SM SAND, silty, fine to medium grained, moist, loosely consolidated, micaceous, HC odor SP SAND, coarse grained, brown, loosely consolidated, dry, micaceous, pebbly, HC odor Logged By: Supervised By: Diameter of Boring: Water Encountered at: S, BAEHR E. GREENWOOD 8" inches feet PLATE HOMELESS SHELTER, 1600 E, TRUXTUN LOG of BORING CB-] Page lor 4 ~ " WELL CONSTRUCTION I. - :.' :: -'.'. :::.: . . -'.' - ..' :: _:.... - .' :: ::.... :.: - :"- '.: - :"- '.: - ','- :,: - ..' - .: - :'- '.: I- , '1- :,: I- : '1- '.: I- :.'~.. 'I- . I- . 'l- I- ." '1- . I- . .,... " :.: I- : '1- " ',: I- :.:'~ .' , .,.... ... ' . -." ... " 2" I- .' -' SLOTTED : ='. pye WITH : = .... #3 SAND '- -' -.:" -,' -..,' -' -.:" -' , . -.. ': -- . '- ~ .' :.:- :.'- .' " -,:,' -' .' '1- ,l- . ,:1- , '-.... ':-." ,_,:-- :::~:::: ':_" '-':-- -'. -:.. : -" .... ..... .. CHEMICAL ANALYSES LaboralorV Field 3"'" Benzene HNU g ~ TPH (Gasoline) m 0 ppm ppm 0 NA 440 42 '):::::!!~$ti0RNE ENVIRONMENTAL, Inc. ': ':',':::::.::::::':" "TREA TAlENT BY DESIGN" Proiect Number 0.32/586 500 42 - ND /297 500 20 - ND /224 250 100 NA 350 26 ND /92 150 20 3E-1044 ::r:" ,.....µ Q. DI W · c~ SAMPLE >- CI 0: 0 W ...I m 0 1: :x: :J ,.... z j 3014 '.:. 30 3015 35 3016 40 3017 45 3018 50 3019 '.' " .' ,', (I) , ,z OCl H '(I) (l)w :50 SOIL DESCRIPTION ML SILT, very fine grained, brown, dense, well consolidated, HC odor SILT, as above SILT, as above, pebbly SM SAND, silty, very fine grained, reddish brown, occasional pebbles, compact, HC odor SAND, as above, HC odor 1 l ! j , ï I -, - SAND, as above, HC odor - - PLATE HOMELESS SHELTER, 1600 E. TRUXTUN LOG of BORING CB-3 February 1991 Page 20c 4 .. CHEMICAL ANALYSES SAMPLE >- 0)' . Laboratory Field J:" CJ 31- 0:: 0 z WELL OZ 1-+1 W ..J "CJ Benzene HNU ..J::I a. II ID 0 °H SOIL DESCRIPTION CONSTRUcrION TPll (Gasoline) IDa w · I: 1: 'I/) ppm ppm 0 o~ ::I I- I/)w Z H ::)0 ..J .' f- " :. '1- '.: I- ,l- .' .: l- .' '~ ::~ 55 '~ .' - :.: I- .' NA 380 44 3020 SAND, as above : '1- '.: I- :. '1- : '~ .'. '~ " : : ,: I- :. 'I- : '.: I- ,'. " 'I- :,:~ 2" .' · '~ " :.:~ SLOITED .~ .' ::~ PVC WITH ." ' '~ ..:.~ #3 SAND - 60 SP '~ 1.03/258 280 12 3021 SAND, medium to coarse grained, .~ :.:.~ brown, pebbly, micaceous, .~ ::~ moderately consolidated, HC odor .~ ::~ .' .~ ,:~ " : '1- ,: l- .' .~ .' · ,: I- :1- '~ I- :~ .~ - 65 :.... NA 1150 68 3022 SAND, as above, loosely consolidated, · '- '.:- HC odor ..'- '.:- '- '- '-. ::_'.. -..' :-.... ~ '-.., 70 ::-... 3023 '-.-' NA 75 96 SAND, as above, HC odor .:-... (No sample recovery) · '-.-' .:-... ~ .'. - : '. : : : : '-.. : :: SM : : - 75 : - :.'- ND/419 350 42 3024 SAND, silty, fine to medium grained, : reddish tan, moist, loose, HC odor -..:' I- .:' 1-' ,- .-: ~... ~., 1-:'-- 1-. .- f- .... .' ~.-: ~., '~.-: 80 .' D.IS/NO 70 13 3025 SAND, as above, slight HC odor /::::¡::·:::tHORNE ENVIRONMENTAL Inc. HOMELESS SHELTER, 1600 E, TRUXTUN PLATE "':::::,.,(t.;::.·,:: LOG of BORING ::: :::':::...:::::,:.::. "TREA TAlENT BY DESIGN" ........ CB-3 Project Numher 3E-I0.t4 Februarv 1991 Page 30r 4 ~ -.' CHEMICAL ANALYSES SAMPLE >- en ' Laborato Field J:'" " WELL 3~ ~..., 0: 0 .Z Benzene HNU oZ a. : w J u" CONSTRUCTION J:) m 0 H TPII (Gasoline) mO w~ 1: J: 'I/) SOIL DESCRIPTION ppm ppm U Cv :) ~ I/)w Z H ~C J , , .' .'. 85 NA 20 38 3026 SAND, as above, slight HC odor . , .' PLUGGED WITH BENT CHIPS . . , , 90 .. 0.21/42 480 52 3027 .' SAND, as above, HC odor .. NO/NO 70 84 95 3028 SAND, as above, slight HC odor HC = Hydrocarbon NA = Not Analyzed Bent = Bentonite 100 105 . . ,- "TREA TMENT BY DESIGN" HOMELESS SHELTER, 1600 E, TRUXTUN LOG of BORING CB-3 PLATE ;::::;i:i,;·::'XHORNE ENVIRONMENTAL Inc :,:"'::..(t.::,,..,:, , . ........ Pro'ccl Number 3E-I0-14 Februarv 1991 Page 40r 4 APPENDIX C .~- .... ~ ;~ ;::~ .. ~ ~.~ ,"0 :~ " '" ~ , ~ .. 0 , ~ '\(Q'''' :R i~ , (D Vo \ loA I.M.C: S ~ ® h: 4S-1 , d. ~ /b"' ® \.\=90' ) d =- ..<a ' ) \lc,1 ~ -,rd~h c. ~ I \'~Jf' I- ': 4 ø COli\(. -e"'~+ ::~~ {A.vo. ~ =c. (e !'L ~n.. A-A') ..J ® - ® - c= 13 000 c= 3 000 , , @ Wee'a \.0.. '\- ~rç- ~~ \ ,01\ e -::- Wi; '-' f4 ;:0,'( 110 .P~t~ ( '.L a~\I\s. c '~ ':.. tJt. ~ (~('{ C Y ~eM.':s. ') I ~(€; :: 7, ~ 5""0 VolCD = Vr - ~ = 49 ,~60 -7Cf ço ~ 4-/,300 4,® ~ (7q SoX' 13,000 xIO-1",IO) - 1I,370,Çb U ® -:: {tt'!~O '( 3, ceo ^ IC·Co X I(~) ::: /'.s r ~·;5D Jb -r:;- ~ ( LUt = úJ6~ + ~{) -= ::l~ CêfJ Jh ~ ~ <; ~ .... MPSj BA-t..~»C~ CìAL(vl.ATIDN~ - 110tAtl£Sc; St1t\"1~ . 5Lß t:)\íAAc..t\õt.,) \2.A1~ 400 CFM y.. CoO Mllq 1-- '24 hr.. ;;. 51C.,oOO FT ~~A'( \-W' í)A'( It . 51G. ODO H/rJ"'< -::- 31'1,+ fT~/Lb'Yv:>t..'é - '171 <¡1 . Z. L 6-MOL.E IDA'< jt-N\J~~'{ \ '7 \ ~. '2. \J; 'MOLt / DAY ..., .' 1- ;00 - 10" 1-. \ 00 L-B - L.'ð.ty10L.f :; 45. S Lf?S /OAY ,4l).'JLfh{Dk't' -¡.. 4 r)A'{S = 192 L.BS f'/-.TRAGíi::D If} ~/Jt'-".... /f"t¡,t.-\ . \ 4 ¡..../ -: ...v".5 . ~ .,..-: ftß~Up.~y . 15\ <ö. 2. L[¡ - M oLE I p A,'( 1- ~ y.. \0" \ 00 L~ Lß-M!>Lf = 4-S.? LB'Sf'VA,( fS. S I.-ßS I (JA'f '1- :, DA '{S ? · \ I"',¡;'. S U3S E~WAC.ífP j MAI2(;.1 ¡?I~ .1- Lß -Kol£ (DAY .,.. 1000_ 1- 100 1...1) -= I S I. ~ 2. L.B~ /DAY IV!.? LB-MOL.t: ISI· ~ LfJ7!rJA'< 1- 11 VAY0 ::: \ 400 'ó . G. L.ß5 t'f..1J2.A(Áe'O J - .. O¡'. . .' , Al7rzl~ \5\ ~. 1.. L~r Vlo ,..f. / DAY 'I. 1000 \0'" )( 100 LB ::: U; ,/,-\OLE. \'? I. <6 LßS /rJAY .l'ól. ~ Lß$jVfJ¡Y ~ ~1 DÞ,'/S ~ í4D~~, (, Lß~ ¡;¡qf/A0-rt:Dl M,A.'< ,..!5ICZ,2. U),l'ItoL.f !tJA'( ::: 171.5 LBS!PA\( x ~DO IOOLß _'f-. 10" LB -MOLE .J2\S LJ3SIO'" 1- 14 [J"'/S ~ \2"H~_ L6S f:xT~Aú1EÞ J 1uNE \'?\~.2 Lß-MDLf!pþ<'{ 'I- 1)00 'f.. lDOL-B 10'" LB - Mð\X - 10. '1 L-B S I D¡..'í \ '1'2-11 U,) ~j.íy¿.þ\~W l ,îS.CJ lßsjr)Á'( -¡. 30 í)A.'i~ - JULY 17\~.1 Lt>,MOLf jDA'i -(.. ~ ¡.. \DOL6_ \ 0'" Iß -Molf. -= f.o9, . 3 LBS!DAY ç,~. 'J U3$(O¡"Y ~ 11 fJA'<S - II ~44-, I LØS ~TRl\qf:~ ,AU0vST \')\<2:2.. L5-MOLE /DA'{ y.,' SOD 1- \OOL~ ::. 10, ~ \ßS!DAY /0'" LB,tI\oLt. 1'7."\ Lßs(o"'i ~ 3\ PAie, -rnsz, q LßS -I"I-T'AAOffi) -J , . l . .. c:rPTEMB~ , \ 'j\ Z,1.. llj - MOle/DAY '/. £ y.. lOD Œ = &0.1 t.63. ( DAY I DV L~ -MOlE (j).1 LBS!QA'I X La Olds : IIr.qq,(p L&;. B¡\n'Ac¡["V J O}íoOCK ... \tJl<ì.1- U?-Moæ! VA'l "'/.. 1000_ 'f. 100 L~ lOb \J3-11olf = \SI. <62 LBS!DAÝ ,171. ~ U3') I [lAY ~ 'lq DAYS : [44()Z.l Les, bfflOrro j NoV~MetK ..,I")[~. 7- t2rMoLE IOA'( " SOQ '!. \00 LI3 = 15.4 LBS ¡DAY \010 L.ß-Mol£ ,1'7,4 LBS{Wi x 71. DAYS ~ ì1Q13.4- IY.>S tKíf.Þl-TEl) ] \)[:œM~ .. \ S \ ~. 'Z.. Lß - tll D Lt I DAY 'f.. 1.00 "f- IOOLB 30· 4 LBS {VAY - 10'" 1.ß . ~OLE Å? of I I j -1'6-qo 30.1' LBS!VA'I 'f. \~ fJA1S ::: 54-1,2- LBS. EXíRAGft:"lì // TOTAL. Lð~ ~)\\R1\G1EO µY-~E: -z.CP ?1~.\ t;=:: 3930 GALLONS r ì I· r: F1 I F ...... ... .. .'.. . . . \ \ -,--",," , "--" ':"-' L C IU ::::.. FIRE DEPARTMENT D. S. NEEDHAM FIRE CHIEF >,' ..)j '.' 'ii" . '1'./,., , "WE CARE" ,::l/_'i).Ji .. '!\I'~ \ Of) 1 ,t-~...~,..,;) ().J fJ P .r.' J¡Jt.ÍJ t&'--' "fl J,' 'J '. J ji.. ."1 )1' ' . fc....; r . .~. . ~Q . :) :)1 J\" ,,¡¡ { 'I c,.I - " (j r~'\ ',>'" ()bçfL/ Jby~.J :.~..-. :~ ,dJ t.- , .,:/ February 21, 19~.~0>..;J<} . 'r.J~~.>-!; ;W(t . $ J ..... The City of Bakersfield, California is request~n ~ written technical proposal and cost quotation to perform the mitigation of fuel contaminated soil in two separate locations at the property located at 1600 East Truxtun Avenue, Bakersfield, California. <?~- f1 ,;' A \..:;;- ¡\(yu . '-. þ> . ~ .. ,/f CITY of BAKERSFIELD ~- (}O I (/,,~....' 1.(1 /,.~\ h~V -- fjJ" ¡' 2101 H STREET BAKERSFIELD. 93301 326,3911 The soil contamination areas are identified as Site 1 and Site 2 on the enclosed site map (figure 1). Si te I has been fully characterized by Geosystem Inc., their report, dated January 1989, is enclosed (figure 2), Site II has been fully characterized by William H. Park and Associates, their report, dated August 5, 1988, is enclosed (figure 3), SITE I The remediation must be accomplished to at least 140 feet and with a high degree of confidence that no threat to any biological receptors exists. Levels of contamination above the LUFT manual concentrations, if warranted, must be justified by scientific scrutiny. The remediation method shall be in-situ vapor extraction with a collection of the extracted vapors at the surface. The vapor extraction system shall be designed to reduce the levels of concentration to levels that no longer threaten ground water, above ~round use of the property for habitation and to hinder further migration of the contamination. The proposal shall address concentrations still present at the bottom of borings B2 and B4. Remediation at the site cannot negatively impact any other acti vi ties on the property including construction, human habitation, or remediation methods being conducted at Site II, SITE II Remediation shall be accomplished by either in-situ or on Site bio remediation, or a combination of vacuum extraction and bio remediation, The proposal shall include a treatability study and must address all of the contaminants present including Benzene. The soil remediation associated with this site should also include eighteen 55 gallon drums of contaminated soil resulting from the test borings associated with the site characterization of Site I, Remediation at this site cannot negatively impact any other activities on the property including construction, human habitation or the soil venting operation being conducted at Site I. %- ~.:.?, Page 2 Proposal Request GENERAL REQUIREMENTS The successful contractor shall supply all necessary permits and pay all fees associated wi th the mitigation process. Noise levels associated with the project must be addressed to meet H.U.D, requirements. Any discharge from the operation may be a hazardous waste and must be addressed as such, All operations must meet Kern County Air QuaIi ty Standards, and the requirements of the Kern County Environmental Health Department, Each site operation must include a complete and functional onerations and maintenance manual, quality assurance and Quality control procedures, treatment cycle and monitoring schedules and controls, a specific beginning and end point for the project, accompanied by a sequence of events flow chart or schedule. The Field and Project t'lanager should be identified in the Request for Proposal and a brief qualification statement or resume for that individual, be included in the proposal, We wi 11 accept separate bids for Site I and Site I I. Your company may elect to submit a proposal for both Sites or either one separately, but each Site should be addressed separately in the proposal, The successful engineering firm selected will be required to comply Hith the Cities insurance requirements (included as Figure ,j, ) , The final proposal including the technical proposal as well as a detailed cost auotation should be submitted to Darlene Wisham, City of Bakersfield, Purchasing Department, 1501 Truxtun Avenue. Bakersfield, Ca, 93301, before FRIDAY, MARCH 24, 1989. If you have any questions concerning the scope of the project please contact Ralph E, Huey at (805) 326-3979, _~~Si~¡l~ a17;~ Hu~~j Hazardous Materials Coordinator REH/vp Enclosures -_....~.. - ."-'~.""-- "'-, ~Q ..J. -- ~ f.., A. ------'-~--, ~.~ tV .., -P~cr"'~ (} ~ Ii ö 11 ~_1 ( to.t... ~ "... l. '^ J f' r. £\ ""'.... ..~,,~ ~,,~ ~/tAQ.. \ SIt e. :I.ø t)(,sittJ5 StRCAttt.tee. ('5~O) '-l( , CI~ " r c.. -lfli~. $Jte. 7' tg) J..L- , D r£¡(tsf;N!J 51Rucf~Re. . '6/0 ( , 600'" t. € o.st IR. u {TO N R" e. N Lt e.. T0jU.R ~ J ;1 Q' - =:=, ~ +'0 ----------..-- - --- .-...._-- ... ,ilr J SITE I CHARACTERIZATION FIGURE 2 ..... 1 Project No. 88-250 January 1989 Report SITE CHARACTERIZATION AND REMEDIAL ALTERNATIVES DEVELOPMENT Future Homeless Shelter Property Bakersfield, California City Of Bakersfield Bakersfield, California -- ...;, --, - ,,- - -, --, ~- -- .- - - -- -- -. -- - ..~ '~~'J ' '-----, (\~~/ ~~3~, L~ I ~) , : i '. '-.J --=== '...... '___J ~ CONSULTANTS, If\JC. January 27, 1989 Project No. 88-250 Mr, Ralph Huey Hazardous Waste Coordinator CITY OF BAKERSFIELD 1501 Truxtun Avenue Bakersfield, California 93301 Report site Characterization and Remedial Alternatives Development Future Homeless Shelter Property Bakersfield. California Dear Mr, Huey: Transmitted herewith are three copies of the report related to the subject investigation. Your review comments on the draft report, dated January 4, 1989, have been considered in the preparation of this final report. Geosystem Consultants, Inc. appreciates the providing services to the City of Bakersfield. questions, please do not hesitate to call. opportunity of If you have any Sincerely, ~r :J~ANTS, INC. Mohsen Mehran, Ph,D. Project Manager MM:sh Enclosures 18218 ,\¡lcDurmott East. Suite G · INine, Collforr,¡o 92714 Teiephone (714) 553-8757 · F/,X (714) 261-8550 A REPORT SITE CHARACTERIZATION AND REMEDIAL ALTERNATIVES DEVELOPMENT FUTURE HOMELESS SHELTER PROPERTY BAKERSFIELD, CALIFORNIA Prepared for CITY OF BAKERSFIELD BAKERSFIELD, CALIFORNIA Prepared by Geosystem Consultants, Inc. 18218 McDurmott East, Suite G Irvine, California 92714 (714) 553-8757 FAX (714) 261-8550 Project No. 88-250 January 1989 -~ --~ ..-=:..... --.-";- ," ~- .- --- .- ~ .-- . ~- - ' " ,-- .,' -- ...."' ~ TABLE OF CONTENTS LIST OF TABLES LIST OF FIGURES 1.0 INTRODUCTION 1.1 OBJECTIVE 1.2 APPROACH 2,0 BACKGROUND INFORMATION 2.1 SITE LOCATION 2.2 SITE DESCRIPTION 2.3 SITE HISTORY 3,0 FIELD ACTIVITIES 3.1 DRILLING AND SOIL SAMPLING 3,2 BORING LOCATIONS 3,3 SAMPLING HANDLING 3,4 DECONTAMINATION PROCEDURES 3,5 BORING ABANDONMENT AND DRILL CUTTINGS 4,0 PHYSICAL TESTING AND CHEMICAL ANALYSES 4,1 PHYSICAL TESTING 4,2 CHEMICAL ANALYSES 4 , 3 RESULTS 5.0 DISCUSSION 5.1 STRATIGRAPHY 5,2 SOIL QUALITY 5.3 SOIL QUALITY CRITERIA 6.0 EVALUATION OF REMEDIAL ALTERNATIVES 6,1 SOIL REMOVAL AND OFF-SITE DISPOSAL 6.2 ON-SITE AERATION 6,3 ON-SITE INCINERATION 6.4 ON-SITE OXIDATION 6,5 IN-SITU TREATMENT 6.6 NO ACTION 6.7 SELECTION OF REMEDIAL ALTERNATIVE i -=--:1,- <::::::'J :-== PAGE iii iii 1-1 1-1 1-2 2-1 2-1 2-1 2-2 3-1 3-1 3-2 3-3 3-4 3-4 4-1 4-1 4-1 4-1 5-1 5-1 5-2 5-4 6-1 6-1 6-2 6-3 6-4 6-5 6-5 6-6 ~ - - .'-- -- "---- _::::':, ',. ¡ -:-- '-' --- ----, - ---" - --- TABLE OF CONTENTS (Continued) 7,0 CONCLUSIONS REFERENCES TABLES FIGURES APPENDIX A: BORING LOGS APPENDIX B: GRAIN SIZE DISTRIBUTION CURVES APPENDIX C: CERTIFICATES OF ANALYSES PAGE 7-1 ii --.:::-' ,.=:: ,-:::-- --=> -. - - ;'. ':::::' ~ :.::.::.....1 _-== ',~'-:-.. -- \.":::-- - -,::,' -- ---. .. TABLE NO, 1 2 3 4 LIST OF TABLES TITLE Summary of Previous Soil Quality Data Results of Physical Soil Testing Results of Chemical Analyses Leaching Potential Analysis for Gasoline Using Total Petroleum Hydrocarbons (TPH) and Benzene, Toluene, Xylene, and Ethyl Benzene (BTX&E) 5 Initial Screening of Remedial Technologies LIST OF FIGURES FIGURE NO, TITLE 1 Site Location Map 2 site Plan 3 Partial site Plan 4 Schematic Soil Quality and Geologic Profiles iii ,---... - .--- -, - ~,.-- -~ --~- - -- ~ ~ .-~.- -- - - _.1 -;f _/ ~" - -. - - ---- .- ..~ -~ 1.0 INTRODUCTION The city of Bakersfield (the City) is proposing to develop a shelter for the homeless on vacant property (the site) in Bakersfield, California. In the past, a portion of the site was used for fueling vehicles from two underground storage tanks. During removal of these facilities, preparatory to developing the site, soils containing motor vehicle fuels were encountered. Subsequent investigations indicated that the contaminated soils extended vertically beneath the former tanks to a depth of at least 85 feet, On August 31, 1988, the Community Development Division of the City issued a request for proposal (RFP) regarding further assessment of subsurface conditions and the development of potentially applicable remedial alternatives to mitigate contaminated soil at the site. Geosystem Consultants, Inc. (Geosystem) responded with a proposal, dated September 13, 1988, and was subsequently retained by the City to conduct the work specified in the RFP. Subsequent to completing the work specified in the RFP, addi tional soil investigations were authorized by the city to further assess the subsurface conditions. This report presents the findings of the subsurface investigations performed by Geosystem and an evaluation of applicable remedial alternatives. 1.1 OBJECTIVE The overall objective of the subject scope of work was to further characterize the areal and vertical extent of soil contamination beneath and around the former underground storage tanks and develop the most appropriate remedial alternatives considering site- specific conditions and current regulatory crit~ria or guidelines. 1-1 .-- - '- -- -, - -." -' . - .: 1,2 APPROACH In accordance with the RFP (City of Bakersfield, August 31, 1988), the approach adopted to achieve the stated objectives included drilling and soil sampling, the physical testing and chemical analysis of soil samplesr and evaluation of the resulting data. Background information pertaining to the site characterization is summarized in Section 2.0. Field activities are described in Section 3.0, and physical testing and chemical analyses are presented in section 4.0, The resulting data are discussed in Section 5.0 in terms of stratigraphy, soil quality, and soil quality criteria. An evaluation of remedial alternatives is presented in Section 6.0, and conclusions are presented in Section 7.0. 1-2 --.. --- ---. -' -.- -" ..... -- --_. ---- . --=-,-\ - - ---- -, .--- -,-- = -, - ..~ ~ 2.0 BACKGROUND INFORMATION This section summarizes background information considered pertinent to the characterization of subsurface conditions and the development and evaluation of remedial alternatives. The background information includes the location, a description, and a brief history of the site, including previous investigations. It is noted that the information presented herein was derived primarily from documents provided to Geosystem by the City. 2,1 SITE LOCATION The site is located in Bakersfield, California and consists of two adjacent lots, referred to in the RFP as sites 1 and 2, that include the postal addresses 1530, 1600, and 1610 East Truxtun Avenue. The site location is shown in Figure 1, and a site plan is shown in Figure 2, As shown in Figure 1, the site is located in the southwest quarter of section 28, Township 29 south, and Range 28 east (relative to the Mount Diablo base and meridian), immediately south of the Southern Pacific railroad yard in east Bakersfield, In accordance with the RFP, only Site 1 has been addressed in the subject scope of work. 2,2 SITE DESCRIPTION Site 1 occupies the northwest corner of the property and includes the area in which motor vehicles were fueled. The fuel ing facilities included two 1,000-gallon underground gasoline storage tanks and a fuel dispensing island with one pump, which have since been removed, The approximate former locations of these facilities are shown in Figure 3. The site is currently unpaved and is bounded by a chainlink fence, site 1 also features a corrugated metal, two-story building, as shown in Figures 2 and 3. 2-1 ~-, -, - -, -- - ----- - .", "~ 2.3 SITE HISTORY On May 26, 1988, Apex Environmental removed the two 1,000-gallon gasoline tanks from site 1. Soil samples were collected for chemical analysis at 2 and 6 feet below the invert of each tank. The results of chemical analyses indicated total petroleum hydrocarbon (TPH) concentrations ranging from 800 to 7,000 mg/kg (parts per million). On January 20, 1988, the City received a letter from the Kern County Health Department requiring a site characterization investigation to delineate the vertical and lateral extent of TPH in soil. In July 1988, William H. Park and Associates (Park) supervised the drilling of two borings, Test Holes TH No. 1 and TH No. lA, in the area of the former underground gasoline tanks (Park, August 1988). Test holes TH No. 1 and TH No. 1A were advanced to depths of 40 and 85 feet below grade, respectively, utilizing hollow-stem auger drilling techniques. The locations of these borings are shown in Figure 3, In Test Hole TH No.1, located just west of the north end of the dispensing island, soil samples were collected at 5-foot intervals to the total depth of the boring. In Test Hole TH No, lA, located about 6 feet south of TH No.1, soil samples were collected at 5-foot intervals from 45 to 85 feet below grade. The results of field screening with a Gastechtor Oxy/Surveyor indicated contamination to the maximum depth investigated. Selected soil samples from Test Holes TH No. 1 and TH No. 1A were submitted for chemical analyses of total volatile fuel hydrocarbons (TVFH) and benzene, ethyl benzene, toluene, and xylenes (BETX) using modified U.S, Environmental Protection Agency (EPA) Method 8015. The results of these chemical analyses are summarized in Table 1, The soil quality data confirmed that TVFH and aromatic hydrocarbons are present in soils to the maximum depth investigated. The data 2-2 -, - - ~'" .--- .--' - - '-, -- ~ -" -- .: indicate that hydrocarbon concentrations appear to decrease with depth; however, the presence of TVFH and BET X at the 85-foot depth has raised concern over the vertical extent of the soil contamination. Geosystem is unaware of any other previous investigations at Site 1. 2-3 -~ - <::;::, - -- - -- - ---" " 3.0 FIELD ACTIVITIES Field activities at the site were conducted between November 1 and 7, 1988 and included drilling, soil sampling, site restoration, and related tasks. These activities are described in the following sections. 3,1 DRILLING AND SOIL SAMPLING A total of five borings, B-2 through B-6, were drilled to depths ranging from 70 to 140 feet below grade to assess the vertical and areal extent of hydrocarbons in the soil profile. The locations of Borings B-2 through B-6 are shown in Figures 2 and 3. The rationale behind the selection of the boring locations is presented in section 3.2. Drilling was performed by ABC Liovin Drilling, of Signal Hill, California, using a Failing F-10 drilling rig equipped with 8-inch diameter, continuous-flight, hollow-stem augers and air-rotary drilling capabilities. Borings B-2 and B-5 were advanced to 140 and 120 feet below grade, respectively, using a combination of hollow-stem auger and air- rotary drilling techniques. Borings B-3, B-4, and B-6 were advanced to 100, 100, and 70 feet below grade, respectively, using hollow-stem auger techniques, as specified in the RFP. It is' noted that the original scope of work included only Borings B-2, B-3, and B-4, at locations specified by the City. Based on field observations, and upon authorization from the City, Borings B-5 and B-6 were subsequently added to the original scope of work to further define the extent of hydrocarbon contamination. Undisturbed soil samples were collected from Borings B-2 through B-6 at nominal depths of 5, 10, 20, 30, 40, and at subsequent 20-foot intervals. Additional soil samples were collected at intermediate depths at the discretion of the supervising geologist. 3-1 --- - n - --:-... -~ -- . --~ soil samples were collected using a Modified California Sampler. The Modified California Sampler consists of a split-barrel with a drive shoe at the lower end and a drive head and a waste barrel at the upper end. The samplers used were 3 inches O.D., 2.5 inches I,D., and consisted of an 18-inch sampling barrel lined with thin- walled brass sample sleeves. The samplers were driven into the ground with a 140-pound hammer, free-falling through 30 inches. The number of blows required for each successive 6-inch penetration interval were recorded on field boring logs. Edited boring logs are included as Appendix A to this report, It is noted that prior to each sampling attempt, drill cuttings and slough were removed from the bottoms of the borings to facilitate the collection of samples representative of undisturbed conditions, This pre-sampling procedure also minimizes potential cross-contamination of samples for chemical analyses by overlying drill cuttings. On recovery from the boring, the sampler was disassembled and the sample sleeves removed. The ends of the soil samples selected for chemical analysis were trimmed flush and fitted with air-tight plastic caps lined with teflon, which were taped in place. The soil from the middle sample sleeve was extruded from the sleeve into a reseal able plastic bag. The contents of the bag were allowed to volatilize and the head space within the bag was subsequently screened with a photoionization detector (PID) to qualitatively evaluate the presence of volatile hydrocarbons. The PID readings were recorded on the boring logs (Appendix A). 3,2 BORING LOCATIONS The locations of Borings B-2, B-3, and B-4 were specified by the City in the August 31, 1988 RFP. Prior to the initiation of field activities, however, the locations were revised, as described 3-2 -,' . '- ,-, ---, ::=::' :--1' below, based on field observations and access restrictions. It is noted that the revised boring locations were discussed with and approved by City personnel prior to drilling. Boring B-2 was located between the previously drilled Test Holes TH No. 1 and TH No. 1A to assess the vertical extent of the soil contamination, Based on the data available at the time, the location of Boring B-2 was believed to be near the center of the impacted area where the vertical extent of contamination would be expected to be greatest. Boring B-3 was located approximately 15 feet north of Boring B-2 in accordance with the RFP. Boring B-4 was originally to be located approximately 5 feet east of Boring B-2; however, due to access restrictions by th.} adjacent building, the boring was relocated to about 10 feet west of Boring B-2. Based on visual observations and PID field screening measurements during the drilling of the first three borings, Borings B-5 and B-6 were added to the scope of work. More specifically, visual observations and field screening indicated that the impacted zone extended radially a greater distance from Boring B-2 than previously anticipated. Accordingly, Boring B-5 was located about 40 feet northwest of Boring B-2, and Boring B-6 was located about 60 feet south-southwest of Boring B-2. The addition of Borings B-5 and B-6 to the scope of work and the boring locations were discussed with and approved by City personnel in advance. 3,3 SAMPLE HANDLING Immediately upon collection, the soil samples were labeled with a unique sample identification number and placed on ice in coolers. The ice chests were hand delivered to the analytical laboratory. 3-3 ..-- .--'" ~ ,- -. - . ~-=- . I - \ ~ .... ,- '-.. --', " -- -- ,.' strict chain of custody records were maintained at all times from sample collection to receipt by the analytical laboratory. 3.4 DECONTAMINATION PROCEDURES To minimize the potential for cross-contamination, all soil sampling equipment was thoroughly cleaned prior to first use and between successive sampling attempts. In addition, the hollow-stem augers were steam cleaned prior to first use and between borings. Procedures for soil sampling equipment cleaning included scrubbing in an alconex detergent solution followed by one potable water rinse and one distilled water rinse. 3,5 BORING ABANDONMENT AND DRILL CUTTINGS On completion of soil sampling, the borings were sealed to the ground surface with a seven-sack cement/bentonite mix containing 3/8-inch rock. In addition to the borings drilled by Geosystem, previously drilled Test Holes TH No. 1 and TH No. lA were also abandoned in this manner. cuttings generated during drilling activities were placed in 55-gallon steel drums which are currently in temporary storage at the site, As generator, it is the City's responsibility to dispose of these materials in accordance with all appropriate federal, state, and local regulations. 3-4 .---- --- -- - . -- -- . - -- ,-, , - ,~. _~.__I - . ------ ~_.- - , --~. - --- 4.0 PHYSICAL TESTING AND CHEMICAL ANALYSES This section describes the physical testing and chemical analyses performed on the soil samples collected from Borings B-2 through B-6. Physical soil testing was performed by Converse Consultants, Inc. of Irvine, California. Chemical analyses of soil samples were performed by Del Mar Analytical of Irvine, California. Del Mar Analytical is certified by the state of California. 4,1 PHYSICAL TESTING Selected soil samples were subjected to physical testing to determine grain size distribution, moisture content, bulk and dry densities, and porosity, These tests were performed to confirm field soil classifications and to further characterize the physical properties of the soils underlying the former underground storage tank area. 4,2 CHEMICAL ANALYSES All soil samples collected were analyzed for TVFH by EPA Method 5030/8015, and for BETX by EPA Method 8020. BET X are components of gasoline, and as such, are representative of the materials previously used and stored at the site. The detection limits achieved by EPA Methods 5030/8015 and 8020 were 1. 0 mg/kg and 0,05 mg/kg, respectively. 4 . 3 RESULTS The results of the physical soil tests are summarized in Table 2. Grain size distribution curves are presented in Appendix B. The results of chemical analyses for TVFH and BETX are summarized in Table 3 and the certificates of analyses, as received from Del Mar Analytical, are included as Appendix C. The certificates of analyses show the date of sample collection, the date of sample 4-1 --, -- -- -~- . nO , , , ~'- u_ \<=--.. ---' - " - -----" receipt by the laboratory, the date the samples were analyzed, and the detailed analytical results. 4-2 ,,~, --...= :::;, --::::--, - - "- ,~ .~ :=:'J ._-== .,'- .' -,:,:=) -- ~ -" -- '- ,- ::. 5.0 DISCUSSION This section summarizes the principal findings characterization in terms of stratigraphy, soil regulatory criteria for soils. of the site quality, and 5,1 STRATIGRAPHY Based on the soils encountered during the site characterization, the upper 140 feet of the soil profile may be approximated as consisting of four stratigraphic zones. The relative locations of these zones are presented in a schematic cross-section shown in Figure 4, It should be noted that the apparent lateral continuity of the four zones enables the borings to be projected on a single cross-section line. This section line shows the boring locations at their respective radial distances from Boring B-2, which is considered to be located near the center of the contaminated soil profile. The characteristics of the four zones may be summarized as follows: Zone 1: Zone 2: Zone 3: Zone 4: I' Zone 1 is present from ground surface to about 30 feet below grade and consists of brown, red-brown, and gray- brown silty sands, It is noted that the silty sands are predominately well graded; however, some coarse-grained sand lenses occur within this zone. Zone 2 is grade and red-brown, sands. encountered from about 30 to 90 feet below is characterized by light brown, brown, and predominately well-graded silty to clayey Zone 3 occurs between about 90 and 120 feet and consists of light brown to brown, poorly-graded to well-graded sands. These sands were moderately to well cemented. Zone 4 was observed in Borings B-2 and B-5 at about 120 feet. This zone consists of off-white to brown, poorly to well-graded gravels with coarse sand. Zone 4 extended to the maximum depth investigated of 140 feet below grade, 5-1 - .--- ....... -~ - -~. - -----. - - '- '.; .-------= -~ ' - --'_. .- - ---- Selected soil samples from Zones 1 and 2 were submitted for physical testing. sieve analyses were performed to determine grain size distribution curves, and unit weights were calculated to determine densities and moisture content. The results of the physical soil testing are summarized in Table 2. Grain size distribution curves are included as Appendix B to this report. The results of the physical tests can be summarized as follows: Zone 1: The Zone 1 soils are classified as silty sands, with an average moisture content of 6.8 percent, an average dry density of 112.5 Ib/ft3, and an average porosity of 32 percent. Zone 2: The Zone 2 soils are classified as silty sands to clayey sands, with an average moisture content of 9.6 percent, an average dry density of 112.3 Ib/ft3, and an average porosity of 32 percent. 5.2 SOIL QUALITY This section presents the results of the chemical analyses of soil samples collected beneath Site 1. A total of 44 samples were analyzed, 41 of which showed detectable concentrations of TVFH or BETX, The results of the chemical analyses are presented in Table 3. It is noted that the results of PID field screening generally follow the trend of increasing or decreasing concentrations of TVFH detected in the soil samples. The maximum concentration of TVFH in Boring B-2, which is considered to be located near the center of the impacted area, was 40,000 mg/kg at 20 feet. The highest concentrations of BETX also occurred at this depth. The concentration of TVFH generally decreased with depth, as shown in the schematic soil quality profile in Figure 4. The isoconcentrations of TVFH, shown in Figure 4, are based on logarithmic interpolation between adjacent control points. The zone of highest TVFH concentrations generally occurs between about 10 feet (23,000 mg/kg) and about 60 feet 5-2 -- --_.~ .-- ~- ,-,', --,.---' --, '-,~ r "- .~-:::~ ,.-==' __-:', i ~ _ - ,<- ,-,-~-- ,..-. --. --- - - . ---.- -' (11,000 mgjkg) in Boring B-2. Concentrations of TVFH decreased rapidly from 80 feet (5,200 mgjkg) to 100 feet (20 mgjkg) and the declining trend generally continued to 140 feet (7.4 mgjkg), which was the total depth investigated. The maximum concentration of TVFH in Boring B-4 was 9,300 mgjkg at 40 feet, and the maximum concentrations of BETX also occurred at this depth. The concentrations of TVFH generally increased from about 5 feet (1,300 mgjkg) to 40 feet (9,300 mgjkg) below grade and slightly decreased to 100 feet (6,100 mgjkg) where the boring was terminated due to auger refusal. The vertical extent of contamination in Boring B-4 has not been delineated. The maximum concentration of TVFH in Boring B-3 was 9,300 mgjkg at 40 feet and, correspondingly, the highest BETX concentrations generally occurred at this depth. The upper 20 feet of the soil profile does not appear to be significantly impacted by the operations at the site, as evidenced by TVFH concentrations ranging from 5.7 to 23 mgjkg. However, at 30 feet it appears that the hydrocarbon contamination has migrated laterally in the finer- grained, Zone 2 soils and was detected at concentrations of 8,700 and 9,300 mgjkg at 30 and 40 feet, respectively. The concentrations decrease from 40 feet below grade to a total depth of 100 feet (3.9 mgjkg), as shown in Figure 4. The maximum concentration of TVFH in Boring B-5 was 28 mgjkg at 20 feet, The concentrations from 20 feet to the total depth investigated are low and are generally near the laboratory detection limit. It is noted that the sample collected at 120 feet shows non-detectable concentrations for TVFH and BETX. The results of the PID field screening of soil samples indicates very low concentrations of total organic vapors, with the exception of 125 ppm at 40 feet. 5-3 ;::c- -':'= '~,~ -.:' - -, ':::: = -= -, , ' - - -' . -:;;.:¡ - ~~' - - ----.--- þ The maximum concentration of TVFH in Boring B-6 was 10 mg/kg at 5 feet. From 10 feet to the total depth investigated, the TVFH concentrations are low and generally near the laboratory detection limits; however, the BETX concentrations are as much as 12 times the laboratory detection limit. As shown in Figure 4, it appears that the areal extent of contamination extends to between 30 and 40 feet from Boring B-2, and as such, contamination is also expected to extend areally beneath the building. 5.3 SOIL QUALITY CRITERIA In mid-1985, the DHS and the state Water Resources Control Board formed a Leaking Underground Fuel Tank (LUFT) Task Force to establish procedures for assessing soil contaminated by motor vehicle fuels. The procedures to assess the condition of a site are outlined in the LUFT Field Manual (May 1988). The LUFT Manual requires that soil samples collected beneath the invert of underground fuel tanks be submitted for chemical analysis for TVFH by modified EPA Method 8015 and for BETX by EPA Method 8020, The permissible concentrations of TVFH/BETX in soil are determined by several factors, including the depth to ground water from the sample in question; fractures in the subsurface; average annual precipitation; man-made conduits at the site; and other site-specific features, such as its location in a recharge area, the soil profile, and nearby drinking water wells. The above- mentioned factors for the site may be summarized as follows: o Reportedly, ground water in the area is in excess of 200 feet below the surface, and as such, ground water would be at least 60 feet below the maximum depth investigated (140 feet). o The site is underlain by alluvial deposits in which there are not expected to be "fractures." 5-4 ,~J' ';, s\ ~~ --\ - .~~ ,~:= ._== - - '..::::' - ..=.- - ------ ~ o The site is underlain by alluvial deposits in which there are not expected to be "fractures." o The annual precipitation, averaged for the years 1957 through 1987, for the City of Bakersfield is 5.74 inches (National Weather Service, 1988). o No man-made conduits are known to exist at the site, other than the properly-abandoned soil borings. o The soils at the site are generally coarse-grained. Based on the LUFT Manual procedures and using the site characteristics listed above, an evaluation of the potential for hydrocarbons to be leached from the soils was performed. The evaluation, summarized in Table 4, shows that the site scores a total of 48 points, which is slightly less than the upper score, i.e. least stringent conditions, prescribed in the LUFT Manual. Based on this evaluation, it appears that the maximum permissible concentrations of TVFH and BETX in soils are as follows: COMPOUND CONCENTRATION (mg/kg) TVFH Benzene Toluene Ethyl benzene Xylenes 100 0.3 0.3 1.0 1.0 It is noted that the above maximum permissible concentrations of TVFH and BETX were calculated using the procedure outlined in the LUFT Manual. This procedure provides a simplified approach to assess the potential threat to ground water from contaminated soils and, therefore, should be considered an estimate only. Based on these estimated maximum permissible TVFH and BETX concentrations, it appears that remediation is required to mitigate soil conditions to a depth of about 120 feet beneath the former locations of the 5-5 -. - ., -"- ---- -- - ,- --- - -- ... "-" - -- "-- - ---- .1 underground fuel tanks at site 1. As shown in Figure 4, soils that are contained within the 100 mg/kg or greater contour line may require remediation. 5-6 . _0 --== .-~, ,",-=-', -- --- .~-- -....--'- , "'--. ,;;-:;. , -:- \" -=~; i ~';~'¡ ~' .:::::-- -- ~-:-: j 6.0 EVALUATION OF REMEDIAL ALTERNATIVES The remedial alternatives considered in this preliminary evaluation ranged from "total cleanup" to a "no action" approach. This assessment methodology is consistent with state and federal guidance documents and regulations. The specific remedial alternatives considered for screening were as follows: o Soil removal and off-site disposal o On-site aeration o On-site incineration o On-site oxidation o In-situ treatment o No action, The principal criteria considered in screening and evaluating the remedial alternatives included: o Technical feasibility o Effectiveness o Environmental acceptability o Cost, Each of the remedial alternatives considered is described in the following sections in terms of the appropriateness of the technology, applicability to the site conditions, and cost. Alternatives which were judged to be technically infeasible, environmentally unacceptable, or economically unrealistic were rejected subsequent to the initial screening. A summary of the remedial alternatives considered is presented in Table 5. - 6,1 SOIL REMOVAL AND OFF-SITE DISPOSAL This alternative corresponds to the "total cleanup" option and involves removal of the soil to be remediated by open excavation and off-site disposal at a licensed hazardous waste facility. The open excavation would be performed using a backhoe or front-end loader, As the entire volume of excavated soil is not necessarily 6-1 --.. -- -- -" -- -' ~ _.'-~ --- - - - . --- ',-~~~ ':-~ '<:: - - -- - ----.. ! contaminated, the soil removed during the excavation would be segregated based on field screening by visual observation, PID readings, or field chemical analyses. Soils considered to be hazardous would be transported off site for disposal, and the remaining non-hazardous soils used as backfill material. Prior to backfilling, soil samples from the bottom and walls of the excavation would be collected for chemical analysis by a certified analytical laboratory, The results would be used to demonstrate that the soils to be remediated have been removed during the excavation. Off-site disposal is a simple and rapid means of removing contaminated soil from the site. The pr:nary disadvantages of this alternative include the high cost of hauling and off-site disposal and the potential long-term liability associated with off-site disposal. It is noted that soil excavation is generally not appropriate for deep contamination and areas where there is potential interference with existing structures. Since the depth of contamination exceeds 100 feet and the areal extent is greater than 40 feet, excavation and off-site disposal has not been considered further because of the high cost, degree of site disturbance, and the threat to the building's integrity. 6,2 ON-SITE AERATION Soil aeration is an effective method of removing volatile organic compounds (VOCs), such as BETX, from contaminated soil, assuming that adequate space is available for handling and spreading of contaminated soil. On-site aeration involves the excavation and placement of contaminated soils in a suitable treatment area to a thickness of 6-2 -- .- ~ ----- - -- ~ -,' , _. -- - -- -::-' .== '-::::::- '-- ~J-"':::::::; - , -' '- --" ~ -- ~ . 'í 8 to 10 inches. Soil samples would be collected and analyzed to establish initial conditions with respect to BETX and TVFH concentrations. Initially, the soil in the treatment area would be agitated, using a rotary disk, to promote volatilization of BETX. Previous experience in similar projects has shown that with an ambient temperature of 80 to 90 degrees Fahrenheit, BETX concentrations could be reduced to the parts per billion level within 3 to 5 days. Soil samples would be collected periodically and analyzed for BETX to evaluate the efficiency of the aeration process. The advantages of aeration include the reduction of contaminant concentrations to acceptable levels at a relatively low cost. In the event that the extent of soil contamination is greater than initially estimated, the additional volume of soil does not result in proportional increases in treatment cost. The aeration process may be performed in batches should there be insufficient space to treat the entire volume of contaminated soil. The aeration process has been successfully used to remove TVFH and BETX from soil under various conditions and is considered to be a proven technology which, based on the available data, appears well suited to the subject project. The disadvantages include the relatively long duration, the intensive use of labor, and the degree of site disturbance. As open excavation to depths of 25 feet or more is more difficult and expensive and would involve the demolition of the on-site building, this alternative is not considered appropriate for the subject site, 6,3 ON-SITE INCINERATION On-site incineration involves excavation of the contaminated soil, followed by incineration to volatilize the hydrocarbons. The 6-3 ~, .--== ---,¡~ '. ~7! I ",=:,"J L...:::= --==:'\ ~~ - - ~~~:=-::: ~= - '--- ~----- - ~. - ---- '! volatilized hydrocarbons react with air at high temperatures, and oxidize to produce water and carbon dioxide. The advantages of this remedial alternative are the rapid and complete removal of contaminants. Although the option is believed to be feasible, few portable systems are available at this time, making implementation difficult. Depending on the system chosen, air quality considerations may make this option inappropriate. Another disadvantage is the relatively high cost associated with deep soil excavation and remediation. Based on cost and availability, on-site incineration has not been considered further for implementation at the subject site. 6,4 ON-SITE OXIDATION On-site oxidation refers to those technologies which utilize oxidizing agents to break down the hydrocarbon chains. Hydrogen peroxide and chlorine are the most common oxidizing agents used. Case histories indicate that hydrogen peroxide can efficiently cleave the aromatic ring structures and oxidize the by-products to carbon dioxide and water, The advantages of this technology include the rapid treatment process (several days) and low cost, Disadvantages include uncontrolled reactions which may evolve intermediate by-products, causing potential air pollution problems. Synthetic polysilicate materials have been used on a limited scale in conj unction with hydrogen peroxide for treatment of soils contaminated with petroleum hydrocarbons. Some of these technologies are currently being researched and are being reviewed by state regulatory agencies. The advantage of using synthetic polysilicates appears to be the availability of active sites where hydrogen peroxide and petroleum hydrocarbons can react until complete decomposition to carbon dioxide and water is achieved. The kinetics of these processes are not yet well known. 6-4 ---:::' -.== ":=:,-". -, --- - :::-; ==, '~ " '-:=:. -- : - - '-' -- --- - ---"- ! The method of implementation of these technologies is similar to the on-site aeration discussed in section 6.2 in that the contaminated soil is excavated and spread over a treatment area. The oxidizing and synthetic polysilicate mixtures are mixed into the soil using suitable agricultural or earth-moving equipment. The oxidizing agent is applied periodically and soil samples are collected for analysis to assess the efficiency of the process. The efficiency of oxidation technologies indicate that BETX and TVFH concentrations of 10 and 100 mgjkg, respectively, may be achieved. Oxidation technologies may not be capable of reducing BETX and TVFH concentrations significantly below these levels. Based on the relative infancy of this technology, the possible incomplete removal of BETX and TVFH, and the disadvantages of deep excavation, on-site oxidation has not been considered further for implementation at the subject site. 6,5 IN-SITU TREATMENT In-situ treatment involves reducing BET X and TVFH concentrations wi thout excavating the soil, This technology is based on the interaction of fluid, usually air, moving through the soil pore space. The success of this technology, therefore, depends primarily on the hydraulic conductivity of the soil. For soils with high permeability, in-situ treatment may be appropriate for the removal of VOCs by forced ventilation. The most common in-situ remediation technologies include bioremediation and vapor extraction. Bioremediation has been found to be an effective method of treating soils that contain light fractions and higher boiling point petroleum hydrocarbons. However, this technology has been successful primarily for above- ground as opposed to in-situ remediation. The effectiveness of in- 6-5 ~ -- "---- ;~~-'.- -==::; <:.:..: ~-;¿) - '-~I situ remediation would depend on contact between the solution phase and the contaminated soil. The cost for in-situ bioremediation is estimated to be $70 to $130 per cubic yard. In-situ vapor extraction involves the passage of air through the soil pore space under positive or negative (vacuum) pressure to the system. The hydrocarbons present in the soil will gradually enter into the vapor phase as uncontaminated air migrates through the soil. The cost for in-situ vapor extraction is estimated to be $50 to $100 per cubic yard. Based on the current understanding of subsurface conditions, the sandy soils underlying the site, and the volatile nature of the contaminants, in-situ ventilation appears to be suitable for implementation at the site. 6,6 NO ACTION Under this alternative, no attempt would be made to reduce BETX and TVFH concentrations. Because of the areal and vertical extent of the contaminated soil profile and the presence of high concentrations of TVFH and BETX in the soils, the no action alternative is unlikely to be acceptable to the regulatory agencies and has not been considered further. 6,7 SELECTION OF REMEDIAL ALTERNATIVE In order to select an appropriate remedial technology, the available alternatives were qualitatively ranked according to several factors pertaining to the applicability of each to the site-specific conditions. This ranking is summarized in Table 5. Site disturbance is generally considered low to moderate for all containment and in-situ treatment technologies. Technologies requiring excavation are considered to cause high disturbance. The ranking system for liability is based on the anticipated residual contamination and potential exposure during remediation. The ranking system for cost is based on estimated costs per unit volume 6-6 i ~ ' ' i,C;\ ,~~~ - ,;- ~~, c-. ,- , -,- of soil remediated. The approximate range of costs, corresponding to the low, moderate, and high categories are less than $100, between $100 and $250, and greater than $250 per cubic yard of soil, In addition to the criteria presented in Table 5, other site- specific features also have a major impact on selecting the most appropriate remedial alternative, These site-specific features are listed below: o Soil remediation to a depth of approximately 120 feet below the ground surface may be required. o The impact of any remediation activities on the structural integrity of the building must be considered. o Remediation of potentially contaminated soil beneath the building may be required. In general, the selected remedial technology should minimize site disturbance and effectively remove and remediate the VOCs in the subsurface soil based on the above site-specific criteria. In-situ treatment by vapor extraction appears to be the most appropriate technology in terms of the sandy nature of the soils and the volatile nature of the hydrocarbons detected. 6-7 :~ ! -- ,'~" -~ - ~ ~§,.- =-= -~== ",- '':'::-''j,~ -" --=--, - "::::::..-' 7.0 CONCLUSIONS Based on the data generated during the site characterization and the development and evaluation of remedial alternatives, the following conclusions may be made: o The site is underlain by predominately silty, well- graded sand to about 90 feet below grade. From 90 feet to the total depth investigated, the soils consisted of poorly to well-graded sands and gravels. No water was encountered in the borings to the maximum depth investigated. o Hydrocarbons extend vertically to the total depth investigated (140 feet) ; however, the concentrations of TVFH (7.4 ppm) and BETX (0.3, 0,5, and 0,2 ppm) at this depth may be permissible (Table 4) when considering site-specific conditions (i.e" annual precipitation, depth to ground water, etc. ) , o Assuming that the subsurface stratigraphy is relatively homogeneous laterally, it appears that the areal extent of hydrocarbon contamination extends radially between 30 and 40 feet from Boring B-2. o Based on the distribution of TVFH and BETX, shown schematically in Figure 4, it is likely that the contaminated soil profile extends beneath the building located east of Boring B-2. o LUFT Manual procedures were utilized to estimate the maximum permissible concentrations of TVFH and BETX (Section 5.3) and to provide the rationale and guidance for remedial action requirements. o A no action alternative was considered; however, the elevated concentrations of hydrocarbons in the soil profile and the lateral and vertical extent of the contaminated soil profile preclude this option. o It appears, after review of numerous remedial alternatives, that in-situ soil venting by vapor extraction is the most appropriate method of mi tigating soil contamination at the site. The sandy nature of the soils, the volatile nature of 7-1 ~~ :~- ¡.=~/ ~ C-] '~~c:~ -,-~ ~ . the compounds in the soil, minimal disturbance, and moderate cost support selection of this remedial alternative. site the Implementation of in-situ soil venting by vapor extraction is commonly preceded by a field pilot test, the results of which are used for full-scale implementation. Based on available site- specific information and experience in similar projects, the mitigation process is expected to require 3 to 6 months to complete. However, performance monitoring during remediation would enable better estimates of the project completion schedule to be made. It is suggested that the City of Bakersfield inform Kern County Health Department personnel as to the results of this investigation and the proposed course of action. Approval of Kern County Health Department and other regulatory agencies should be obtained prior to initiating design and installation of any remedial alternative. Respectfully submitted, GEOSYSTEM CONSULTANTS, INC. ~t¡ iknc- ~ Jay Dean Carter Senior project Geologist ~dJL· Senior Project Engineer ';¡:tL c:]: Mohsen Mehran, Ph,D. Project Manager (CGWP No. 189 ) 7-2 '0 __ _ __ ___ -____ _ - \ -~ a _ ~ ___ --- -- -- ----. _J ~ REFERENCES City of Bakersfield, Community Development Division, August 31, 1988, "Request for Proposal for site Characterization at 1600 East Truxtun Avenue." Geosystem Consultants, Inc., September 13, 1988, "Proposal, site Characterization and Remedial Alternatives Development, Future Homeless Shelter Property, Bakersfield, California," submitted to the City of Bakersfield. National Weather Service, Bakersfield, California, December 1988, personal communication. ~villiam H. Park and Associates, August 5, 1988, letter to George Sweet. state Water Resources Control Board, May 1988, "Leaking Underground Fuel Tank (LUFT) Field Manual," prepared by Leaking Underground Fuel Tank Task Force. '~~~~\:;)~~- _-:,~,~-- =-- TABLES -~ - ~ .~- -- - . '-....: -,,---.\',----.-: '/ :.,-:"::-- -~ __::"J 1--== ", --=-/ 0 _ ;:~. TABLE 1 SUMMARY OF PREVIOUS SOIL QUALITY DATA (All units are mg/kg . parts per million) ETHYL ISOPROPYL BORING NO. Qifl!!. !.Y£..!!.(1) BENZENE BENZENE TOLUENE p,m-XYLENE o-XYLENE BENZENE (feet) TH No. 1 5 4,600 62 96 270 510 280 42 25 380 ..\,3 11 20 43 25 3.6 TH No. 1A 45 12,000 320 380 1,700 1,700 830 71 65 400 3.5 13 21 56 31 4,5 85 510. 1.7 11 11 48 32 5.6 NOTE: 1) TVFH = Total Volatile Fuel Hydrocarbons ..~ ~_ (5) ~ ~ /~)~~= -~: TABLE 2 RESULTS OF PHYSICAL SOIL TESTING uses MOISTURE DRY BORING NO. llil!!. DESIGNATION(1) CONTENT DENS I TY POROSITY(2) ( feet) (%) ( lb/ft3) (%) a-2 20 Si l ty sand 6.15 109.472 33,8 30 Silty sand 7.76 111 , 164 32.8 40 Si l ty sand 8.50 125.172 24.3 60 Si l ty sand 11.56 106.714 35.5 80 S i l ty sand 5,46 106,832 35.4 S-3 30 Si l ty sand 6,56 116,997 29.3 S-4 40 S i l ty sand 10,83 110,650 33.1 60 Silty sand 14,74 116,725 29,4 80 Si l ty sand 6.67 107,763 34.8 NOTES: 1) Unified Soil Classification System (USeS) designations were determined by laboratory personnel. 2) Porosity was calculated assuming a specific gravity of 2,65, ~:-== ; ", =;!;::: ~'J~ (~- 7 ,--;:-. - ~ -~ ï~) ~. TABLE 3 RESULTS OF CHEMICAL ANALYSES (All units are mg/kg . parts per million) ETHYl BORING NO. DEPTH !.Y.El!.(1) BENZENE TOLUENE BENZENE XYlENES (feet) B-2 5 530 0,09 0,3 ND<0.05(2) 1.3 10 23,DOO 4,6 160 53 92 20 40,000 120 1,500 220 550 30 19,000 96 930 110 290 40 4,000 84 260 99 160 60 11,000 58 460 52 100 80 5,200 15 100 24 49 100 20 1.1 2.5 1.9 0.6 120 6,1 0.1 0,5 0.1 0.1 135 14 ND<O,05 0.3 0,5 0,05 140 7.4 0.3 0.3 0,5 0.2 8-3 5 6.3 ND<0.05 ND<0.05 ND<0.05 ND<0.05 10 2.3 0,3 0.8 0,3 0,05 20 5.7 1.0 4,3 1.3 0.3 30 8,700 22 120 35 69 40 9,300 43 130 38 68 60 2,300 13 52 15 22 80 29 0.5 0.9 0,7 0,5 100 3.9 0.5 0,8 0.6 0,2 B-4 5 1,300 ND<O,05 6.2 ND<0.05 8.3 10 860 0,2 0.4 0,2 3,7 20 3,100 6.3 41 21 32 40 9,300 42 290 76 120 60 7,200 38 120 59 93 80 6,300 33 190 63 84 100 6,100 21 130 51 65 B-5 5 3.0 0.8 0,7 ND<O,05 0.3 10 1.9 0,7 0.4 0,6 0,2 20 28 1.1 1.3 1.1 1.2 30 1.0 ND<0.05 1.5 0.8 0.2 40 1.0 1.3 1.2 0,6 0,1 60 2,9 ND<0.05 ND<O,05 ND<O,05 ND<O.05 80 1.0 0,4 1.3 0,3 0.2 90 2,5 0.5 1.3 0.4 0.3 100 1.8 0.1 0.5 0.7 0.2 120 ND<1,O ND<0.05 ND<0.05 ND<O,05 ND<O,05 ,,-=-~ -.== :=-'- '-:::-~ -:- -.::':- -:.:..---= ~ ,~~ :_-== ,<~,: ,~! .=~ - - TABLE 3 (Continued) ETHYL BORING NO. DEPTH TVFH(1) BENZENE TOLUENE BENZENE XYLENES (feet) B-6 5 10 1.5 6.9 1.2 0.5 10 2.1 0.1 0.5 0.4 0.3 20 ND<1,O ND<0.05 ND<O.OS ND<O,OS ND<O.OS 30 ND < 1 .0 ND<0.05 ND<O,OS ND<0.05 ND<O,05 40 1.3 ND<O,OS 0.05 0,6 0.5 50 1.8 0.1 0.1 ND<0.05 0.07 60 1.0 0.2 0,2 0.2 0.1 70 1.3 0,1 0.4 0.6 0,6 NOTES: 1) TVFH = Total Volatile Fuel Hydrocarbons 2) ND denotes Not Detected at detection limit indicated, ',~!~-C:D~~' /(0J~I' ___~'. I I I ~ TABLE 4 LEACHING POTENTIAL ANALYSIS FOR GASOLINE USING TOTAL PETROLEU" HYDROCARBONS (TPH) AND BENZENE. TOLUENE, XYLENE. AND ETHYLBENZENE (BTX&E)(1) SITE FEATURE Minimum depth to ground water from the soil sample (feet) Fractures in subsurface (applies to foothills or mountain areas) Average annual precipitation (inches) Man-made conduits which increase vertical migration of leachate Unique site features; recharge area, coarse soil, nearby wells, etc. SCORE 10 PTS IF SCORE(Z)CONDITION IS MET >100 10 None 10 <10 10 None None SCORE 9 PTS IF SCORE(Z)CONDITION IS MET SCORE 5 PTS IF SCORE(Z)CONDITION IS MET 9 51 - 100 25 . 50* Unknown Present 10 - 25 26 . 40** Unknown Present 9 At least More than Column Totals (total points) + 30 18 o 48 + = Range of Total Points 49 pts or more 41 . 48 pts .3/.3/1/1 100 40 pts or less Maximum allowable B/T/X/E levels (ppm) Maximum allowable TPH levels (ppm) 1/50/50/50 .3/.3/.3/,3 1,000 10 * If depth is under 25 feet, score 0 points, ** If precipitation is over 40 inches, score 0 points, NOTES: 1) Reference: State Uater Resources Control Board (May 1988), According to the LUFT Manual, the above table "was designed to permit estimating the concentrations of TPH and BTX&E that can be left in place without threatening ground water, Three levels of TPH and BTX&E concentrations were derived (from modeling) for sites which fall into categories of low, medium or high leaching potential. To use the table, find the appropriate description for each of the features. Score each feature using the weighting system shown at the top of each column. Sum the points for each column and total them. Match the total points to the allowable BTX&E and TPH levels." 2) Scores assigned by Geosystem according to site-specific conditions. I ¡ i I: ,'( \ :ì) (, 11'1: \·;;1 .11 \ I " ;' ;. '. j II " ;¡ 0'1 TABLE 5 INITIAL SCREENING OF REMEDIAL TECHNOLOGIES RECOMMENDED FOR REMEDIAL PROVEN SITE REGULATORY TYPE FURTHER TECHNOLOGY TECHNOLOGY DISTURBANCE REQUIREMENTS LIABILITY OF SOIL COST EVALUATION No Action Low No Containment: Capping Yes Low Low Mod. High All Low No In-situ Vitrification No Low Mod. Low Mod. Mod. . High All Mod, No Fixation No Mod. Low Mod. Mod. High Granular Low No Physical Barriers Yes Mod. Low Mod. Mod. All High No Hydraulic Barriers Yes Low Mod. Low Mod. Mod. All Low No In-situ Treatment: Soi l Flushing Yes Low - Mod. Low - Hod. Low Hod. Granular Mod. No Air/Steam Stripping No Mod, High Low - Mod. Low Mod. All Mod. No Bioremediation Yes Low Low Low Mod. Granular Mod, No Soi l Venting Yes Low Low . Hod. Low Hod. Granular Hod. Yes Excavation and On-site Treatment: Aeration Yes High Mod. . High Low All Low No Bioremediation Yes High Low - Hod. Low All Low No Thermal Desorption Yes High Mod. Low . Hod. All Hod. No Incineration Yes High Mod. High Low All High No Steam Stripping No High Low Hod. Low Hod. All High No Soi l \.lashing No High Low Hod. Low Hod. All Hod. No Excavation and Off-site Yes High Low Hod. All High No Disposal [ ( '1'\' '[ I ((I )" ., (,' " I I ¡ I' ,i I ': I '\' )) lj \' ) i I JI \' II -~ FIGURES ~- - - 'L- '._~ -- ¡~~ --, .-~- - - -~- - --..... . s _ ~=: 110378 I .", /, :1 " " ' " it :' I, II ,II i[ ) _- -,;;::::--- - .¡,' N ,'.\ /':; .1'), ~i :; :1 il --t ',I ,¡: II I I ..---;-;;;::;::-::- i!-..· " o ".... / '1 'I I! Ii 'I if II:, I I I ,."./ ~ II ~ ì~ .. 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", " c,:.ur", . " ~ " ", J C'~:'IDR:"~.":;~E l.ÛCATION FIGURE 1 SCALE o 2000 . 4000 FT SITÊ LOCATION MAP REFERENCE U.S.G.S. 7.5 MINUTE SERIES (TOPOGRAPHIC) Oil CENTER AND lAMONT QUADRANGLES, DATED PHOTO REVISED 1966. SCA LE = I: 24,000. FUTURE HOMELESS SHELTER PROPERTY CITY OF BAKERSFIELD BAKERSFIELD, CALIFORNIA 1954, @~(Q)~W~1J~ú¥Ð o o I o on OJ .. .. \!'" ;¡:!S g~ iDiD 00 \:i~ ~i ,,~ .. t ~ ~ I( r-- ~> 8'" ~ ft o SOUr HErU" t.--....I!( PAC IF IC __ I1AIL , <;----~ 110AD I ' ,~--- ISEE FIGURE3~1 I '~.___ I I ~__ : . ~--~ "I ,[j.(): --~_ I : : "ETAL ~--~___ ~1 : rLDING '--. T ! I 11530 E I ~,,-- ym" ""' ~. f"l "'" SITE 1 ì II l WOOD I j FRAME .......CONE BLOCK OFFICE \BUILDING WALLS L 1600E TRUXTUN AvE ------ - i_ ~ J _ ir " r_ r_,,~~~X~~~~jf~&~1'i¥fITfo~~E POWE R L IN ES E -E E Ç --.---- --rDGÊ' OF ROAD~'u t METAL BUILDING IšI-PAC I FIC BELL MANHOLE -~Ç. EAST TRUXTUN AVENUE EXISTING CURBS AND GUTTERS ------ )) Cf) ... ~Iu SIu ::Jt: ~Cf) ( , o SCALE 50 I 100 FEET . ~ SOIL BORING LOCATION c:=J EXISTING BUILDING FIGURE 2 SITE PLAN FUTURE HOMELESS SHELTER PROPERTY CITY OF BAKERSFIELD BAKERSFIELD, CALIFORNIA @~©~W~ìJ~1i¥fl 110378 "t) o o I o I() C\I Q) CC o ZQ: ~~ «~ Q::;:) OZ r-------------------------~ I : m I&B~ I w I I : I I I I I I I FORtoER 1,000 GAL. GASOLINE TANKS I I I I I APPROXIMATE LIMITS OF EXCAVATION » CCCC 00 UJ~ ~O UQ: UJe.. Ie.. U« '"7 ~> ~CC o DISPENSER ISLAND (REMOVED) I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I ~B-6 r r ì I I I I I I I I I I I I I I I I I I I I I I I I I I I I L_~ L_...J 58_3 , , :rH No. I I I ~2 I QI I TH ~o: IA ~---------------------- I I I I I I I I I I I I __.J LEGEND & SOIL BORING LOCATION o EXISTING BUILDING I o SCALE I 10 l 20 FEET FIGURE 3 PARTIAL SITE PLAN FUTURE HOMELESS SHELTER PROPERTY CITY OF BAKERSFIELD BAKERSFIELD, CALIFORNIA @~(Q)~W~lF~~ ! ~ :! ~'" J:!! 3~ >- >- @~ ~i IS .. ~ ~~ o . o ---------.-.--.-. SCHEMATIC SOIL QUALITY PROFILE TVFH VS, DEPTH (ALL UNITS IN MILLIGRAMS PER KILOGRAMS. mg/kq) 8-6 8-5 10,0 3,0 2.1 1.9 , - <1.0 \ 26 "- <1.0 1.0 1.3 1.0 1.8 1.0 2.9 1.3 1,0 I ~ 25 , "7 1.8 8-3 8-4 8-2 (1.0 ,/ ... 3.9 I I ,II , I'I I, I'll I' ,I, I' ,'''./ I I' 1 I '-" I I \ " 4.0 ~ D D 100- -1000- APPROXIMATE CONCEHTRATIOII > 10poomq/kq 1000m /kt CONTOUR IN mg/kg 9 COIICENTRATlON IIOlN:IMY - - - - INFERR£D D 1000- D 10- 10POO-/k" 100 "/k -40p00 TVFH CONCENTRATION .., . m. 9 AT SAMPL E DE PTH --'- SCHEMATIC GEOLOGIC CROSS SECTION o 8-6 20 40 60 80 100 120 140 I?Mfi~ GRAVEL .L.EIìEMl II SILTY SAND UTHa.OGIC -?-.MnY L§.lJ SAND ~ Û CLAYEY SAND NOTE 1) ~'NOS ARE PROJECTED ¡r~ONE SECT'~SES Y1't_~;m.ftUHY 2) THE !l~t~'1'AltQ.m2f ¡V+\:MLo~AV'lIN aaR:i.o. T~~~~dlbYT1ß~ DICATED BETWEEN BORINGS 3) TVFH: TOTAL VOLATILE FUEL HYDROCARBONS SCALE HORIZONTAL AND VERTICAL .....-.-- o 20 I 40 FEET FIGURE .. SCHEMA TIC SOL QUALITY AND GEOLOGIC PROFILES FUTUIIE HO~.. IHÐ. TEA MOPEIITY CITY 01' ÞKEIIII'aD BAKER8F1ELØ, CALFOIINIA @~(Q)~W~1~1t¥1I APPENDIX A BORING LOGS '-,",- - :--. --.." .~~. ~: - - - -- ---- --- . ',-', ---....' -. --- - --- .- ---- w u BO RING NO. B-2 z,..-.. SHEET 1 OF 3 r- «I- w C) 1-0 W Z ~o u.. 0__.. 'f) u.. w w FIELD ENGINEER J. Carter DA TE BEGAN November 2, 1988 w Ul « C 0::0:: ....J ....J EDITED BY z w 0. W Cl.. u G: J. Carter DA TE FINISHED November 6, 1988 O::Q ZO- ::;::: Ul 0 CHECKED BY P. Miller GROUND SURFACE EL. NA I '-" 9(J1 « 0::: - ::J 1-3 Ul ::J 0... CASING ELEVATION NA 0... z <1:0 W I IX---1 0 I-a:¡ ~---- w DESCRIPTION Q... 0 SM Medium dense, brown, fine to coarse-grained S!L TY SAND. Dry, concrete debris. (Fill) 250 22 r 480 2 ¡ 10 ~ t 520 66 r 20 I L L I I ' I J I ¡ ~ 1 I I · ~ L500l¡ 2/6·bJ r- 30 I f I l I ~ I I f >500 55 W , 40 ~ I ~ I - very loose, predominately fine to medium-grained sand. - very dense, light brown. Moist. I - light brown, some fine-grained gravel. - trace silt, trdce fine-grained gravel. NA 62 some fine-grained gravel, some white mottling 50 CLIENT PROJECT NO. LOCA TION CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA - -- ·u_ w () BORING NO, B-2 z.......... SHEET 2 OF 3 I- « I- w '-' 1-0 W Z ~o u.. 0.......... (j') I.L. W w FIELD ENGINEER J. Carter DA TE BEGAN November 2, 1988 w (f) <t.: E œ-a:: ....J .....J Z We. '.LJ Q.. U G: EDITED BY J. Carter DA TE FINISHED November 6. 1988 0::: a.. za.. :2 (f) 0 CHECKED BY P. Miller GROUND SURF ACE EL. NA I ......., °rf) <t.: 0::: I- ::> r=3: (/) ::> c- CASING ELEVA nON NA Q.. z <2:.0 W I !Z:~ a !-CD ~-- Lu DESCRIPTION 50 IL t . . . , . . . - redbrown. Moist, some clay, micaceous. 60 >500 67 r l f70 I ~ f 225 75/6" ~ 80 ~ L t 190 - decreasing clay content. sc Very dense. ligh t brown, fine to coarse-grained CLAYEY SAND. Moist. sp Very dense, light brown, fine-grained SAND. Moist, some silt. Moderately to well cemented. micaceous. 220 100 10 CLIENT PROJECT NO. LOCA nON CITY OF BAKERSFIELD 88-250 BAKERSFIELD, CALIFORNIA --. --,- -', -, --- ~ .-- ---- -- -- - - ."--:---- - -j -. w u BORING NO. B-2 z,,--. SHEET 3 OF 3 I- «\- w G I-a w Z ~o lJ.... 0,,--. rfJ u.. W w FIELD ENGINEER J. Corter DA TE BEGAN November 2, 1988 w (f) « E a::: 0:: -1 -1 Z we. w 0... U G: EDITED BY J. Corter DA TE FINISHED November 6, 1988 C!::e. ZCL ¿ (f) 0 CHECKED BY P. Miller GROUND SURFACE EL NA I '--" 52(/)1 « C!:: I- ::J 1-3 I (f) ::; 0... CASING ELEVATION NA 0... z <t: 0 I w I g: -J ¡ 0 wCIJ z'-" w DESCRIPTION 100 CL sp I . , ' . . . .. '. . ~ ! ., 110 I . ... I· . . . . . l La 94 12°1 r L .... I r L L l130 l ] ~ ~ 7 112 r 1 ~ ' ~'4a 35 112 NOTES: 1 ) sw I.. , Very dense, ligh t brown, medium to coarse-grained SAND. Moist. 1'0 " 0 0 gp 0 0 0 0 [0 " I'.) 0 10 0 " 0 " " " 0 " 0 " " " " " " " " " " Very, dense, brown, fine-grained GRAVEL with medium to coarse-grained SAND. Moist. o I) a 0- o " " " " " " " " " I'.) " " " " 0 Very dense, offwhite to brown, fine to coarse-grained GRAVEL. Moist, subround, igneous origin. dense, brown, fine to coarse- rained SAND. Moist. TOTAL DEPTH = 140 FEET Drilling by ABC Liovin Drilling Company, Signal Hill, California, using a Failing F-10 drilling rig with 8-inch diameter, hollow-stem augers. Due to soil conditions, air rotary drilling with a 6-inch tri-cone bit was also utilized. 2) See Boring Log Legend for explanation of symbols and terms. J) Borinas backfilled to surface with a 7-sack cement/bentonite grout with 3/8-inch rock. CLIENT PROJECT NO. LOCA TION CITY OF BAKERSFIELD 88-250 BAKERSFIELD, CALIFORNIA :"_ -== ~~ ::::: -:- ·0 -:=-_=--::=-~:-:..: :-~- I ,~- , -,-:~'.. " ~--' .::.:....: ~ ".::: '--' - :::.-- c. I.LJ U BORING NO. B-3 z.--. SHEET 1 OF 3 I- «~ w ø ~o w z ~o u... 0---. (/)u... W w FIELD ENGINEER J. Carter DA TE BEGAN November 3, 1988 w (f) 4:. E a:::D:: ---.J ---.J Z W 0- W CL u G: EDITED BY M. Dahl DA TE FINISHED November 3, 1988 0::: a.. za.. 2 (f) 0 CHECKED BY P. Miller GROUND SURFACE EL. NA I ~ QUJ « 0::: I- '::J 1-3 (f) ::J CL CASING ELEVATION NA CL z <1:.0 W I 0::-.1 0 !-CD w'---" r z L1..J DESCRIPTION G... 0 Srrl Loose, brown, very fin e to fine-grained SILTY SAND. Dry, micaceous. I [ 50 9 r Medium dense, graybrown. Moist. 9 sw Medium dense, brown, fine to medium-grained SAND. Moist, 10 very micaceous. ~ t ~ ~ 320 ~ 30 r t ~ ¡ [ L L 40 350 f f I lso CliENT PROJECT NO. LOCA TION I 48~ i i i I i I I I ! 96 I sm Dense, gray, very fine to fine-grained SILTY SAND. micaceous. Moist, SW Dense, redbrown, medium to coarse-grained SAND. Moist. SM Very dense, graybrown, very fine to coarse grained SILTY SAND with fine-grained gravel. Moist. l I 64 - brown. CITY OF BAKERSFIELD 88- 250 BAKERSFIELD,_ CALIFORNIA - ~ -. -- w u BORING NO. B-3 z,....... SHEET 2 OF 3 f- «I- -- w Ü 1-0 W Z ~o l1.. 0,....... r f) lL. W w FIELD ENGINEER J. Carter DA TE BEGAN November 3, 1988 w (f) « E a::: a::: -1 -1 EDITED BY z Wo.. w Q U G:: M. Dahl DA TE FINISHED November 3, 1988 0::: a. zo.. 2 (f) 0 CHECKED BY P. Miller GROUND SURFACE EL. NA I '-" 2(f) « rx:: t- =:J 1- 3: (f) =:J Q CASING ELEVATION NA Q Z «0 W I g:-, 0 wCD z---"" w DESCRIPTION 0_ 50 L >500 46 t ~ ~ [ j I 70 ~ r ' t j ~ 1 , ~ t j 3001 36 f-- 80 ~ ~ r [ J b 90 190 80 10 CLIENT PROJECT NO. LOCA TION sm sw - some clay content. Dense, redbrown, fine to coarse-grained CLAYEY SAND. Moist, some silt. Dense, redbrown, fine to coarse-grained SILTY SAND. Moist. - increase In silt content, trace clay. - becom in g cem en ted, drill in g very difficul t. Very dense, brown, fine to coarse-grained SAND. Moist, micaceous, cemented. CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA - - - _.- ~ w u BORING NO. B-3 z,....." SHEET 3 OF 3 I- «I- w <-' 1-0 W Z ~o lJ... 0,....." If) La.. W w FIELD ENGINEER J. Carter DA TE BEGAN November 3, 1988 W (f) « E 0:::0::: ....J ....J Z W CL u G:: EDITED BY M. Dahl DA TE FINISHED November 3, 1988 - wa.. za.. 2 0 a:: a.. (f) CHECKED BY P. Miller GROUND SURFACE EL. NA :r: ........, 52(/) « 0::: I- ::J 1-3 (f) ::J Q... CASING ELEVATION NA Q... z <1::0 w :r: 0:::-1 0 t-(JJ ~'-' w DESCRIPTION -100 0... TOTAL DEPTH = 100 FEET No water encoun tered while drilling. NOTES: 1) Drilling by ABC Liovin Drilling Company, Signal Hill, California, using a Failing F -10 drilling rig with 8-inch diameter, hollow-stem augers. 2) See Boring Log Legend for explanation of symbols and terms. 3) Borings backfilled to surface with a 7-sack cement/bentonite grout with 3/8-inch rock. ! , CLIENT PROJECT NO. LOCA TION CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA -- -, w u BORING NO. B-4 z.._,. SHEET 1 OF 3 r- 4:1- w CJ 1-0 W Z ~o u.. 0,", (/)u.. W w FIELD ENGINEER J. Carter DA TE BEGAN November 3, 1988 ~ (f) « E Q::::O:::: -! -1 DATE FINISHED 1988 z we. w Q U G:: EDITED BY M. Dahl November 3, Ct:a.. za... 2 (/) 0 CHECKED BY P. Miller GROUND SURFACE EL. NA I '--' a(/) « Ct: r- :J P3 (jJ :J Q CASING ELEVATION NA Il.. z 4: W I g:g 0 WCD z'-' w DESCRIPTION a... 0 ml Stiff, brown, very fine-grained SANDY SILT. Dry. 260 24 - gray. sm Medium dense, gray, fine-grained SILTY SAND. Dry. 300 28 sw Medium dense, brown, fine to coarse-grained SAND. Moist. 10 sm Dense, brown, fine to coarse-grained SILTY SAND. Dry. 400 47 20 L I I ,.... I - very dense, some fine-grained gravel. La NA 82 No recovery. L l ~ ~ - trace silt, trace fine-grained gravel. 420 103 SM 40 - increase in silt content. 50 CLIENT PROJECT NO. LOCA TION CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA - -- ---... - -,~- '--' -- -- _ ~-3'" _ -- '- -~- '1 W (..) z.......... r- (:) <tl- W f-o W Z ~o lJ.... 0.......... V1lJ.... W W tf) z « E a:: a:: -.J w Q.. U WOo za... 2 ¡Yo. tf) I '--" 2V1 « I- ::> f-3 tf) ::> Q.. Z <to W I t::-.J a ....wCD z'--' w 50 a... >500 55 60 70j ~ 300 55 80 ~ 90 L 280 NR sp BORING NO. B-4 W -.J ¡:;: o O:é 0... FIELD ENGINEER J. Carter EDITED BY M. Dahl CHECKED BY P. Miller SHEET 2 OF 3 DA TE BEGAN November 3, 1988 DA TE FINISHED November 3, 1988 GROUND SURFACE EL. NA CASING ELEVATION NA DESCRIPTION - redbrown. Moist, micaceous. - light brown. Very dense, brown, fine-grained SAND. Dry. well cemented, micaceous. .. - CLIENT PROJECT NO. LOCA TION CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA -, - ~ ,-- --~- --- ~ - . -- - -- -, - " '-:':-. '.:::':,'\ .~=:) :- ,-.:::: -- '--~~ .. w ¡ u BORING NO, B-4 z......... SHEET 3 OF 3 f- «I- - w c..:J 1-0 W Z ~o lJ.. 0......... (/')l.L.. W W FIELD ENGINEER J. Carter DA TE BEGAN November 3, 1988 w (f) <{ E erer .....J .....J EDITED BY M. Dahl DA TE FINISHED November 3. 1988 z w 0... U G: - we. 0::: a. za... ¿ (/') 0 CHECKED BY P, Miller GROUND SURFACE EL. NA I '-" ºV1 « a::: f- :J 1-3: (f) :J 0... CASING ELEVATION NA I a.. z <0 w :r: er-l ¡ 0 I-CD ~-- w DESCRIPTION I Cl... ! -100 TOTAL DEPTH = 100 FEET No water encountered durIng drillIng. NOTES: 1) Drilling by ABC Liovin Drilling Company. Signal Hill, California. using a Failing F-10 drilling rig with 8-inch diameter, hollow-stem augers. 2) See Boring Log Legend for explanation of symbols and terms. .3) Borings backfilled to surface with a 7-sack cement/bentonite grout with .3/8- inch rock. - , I I I CLIENT PROJECT NO. LOCA TION CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA ......... -- ---.. .-, - - -- -- ~-- -_: -;; ,'!~"," ::;- \. . .~-~~\ - ,--- ~-=-. <.¿:", _ --== :-=:/ ~---:::.) :-- ;:::./ - .:::-_: - . .:i w u BORING NO, B-5 z.- SHEET 1 OF 3 I- ~I- W C-' 1-0 W Z ~o lJ.. 0.- tnl..L. UJ W FIELD ENGINEER J. Carter DA TE BEGAN November 4, 1988 w (f) <{E a::: a::: .....J ....J Z wa. w a.. u G: EDITED BY M. Dahl DA TE FINISHED November 6, 1988 n::a. za.. :2 (f) 0 CHECKED BY P. Miller GROUND SURFACE EL NA :r: '-" ºU'J <{ n:: I- :::> 1- 3= (/) :::> a.. CASING ELEVA TJON NA a.. z ~o w :r: e:.....J 0 ...JCD z""'" w DESCRIPTION 0 a.. sm Dense, graybrown, very fine to fine-grained SANDY SILT. Moist, micaceous. 2 42 sw Dense, brown to redbrown, fine to medium-grained SAND. Dry, <1 42 trace of coarse grains. 10 . . . . . . . . sm Medium dense, graybrown, very fine-grained SILTY SAND. Moist, very micaceous. <1 36 sw .... . . . . . . . . Medium dense, graybrown, fine to medium-grained SAND. Moist, micaceous. 20 30 <1 58-6" I sm Very dense, brown, fine-grained SILTY SAND. Moist, micaceous. 125 65 40 - very dense, brown, fine to coarse-grained. 50 CLIENT PROJEC- NO. LOCA TION CITY OF BAKERSFIELD 88-250 BAKERSFIELD, CALIFORNIA :..=:.:. I'!:~\ ·:3 - -- '>::, ~ ---:-_-= , ___ :..--.;) . I ~._,~-:, _"___ _ \~'~"J --== '<:--....__" ~_ _ _ -- î W u BORING NO. B-5 z,....... SHEET 2 OF 3 t- «f- w C) 1-0 W Z ~o lJ.... 0......... If)lL. W W FIELD ENGINEER J. Carter DA TE BEGAN November 4, 1988 w (J1 « E D::D:: .-1 .-1 Z wa. w 0.. Ü CL EDITED BY M. Dahl DA TE FINISHED November 6, 1988 0::: a. Zo- :2 V) 0 CHECKED BY P. Miller GROUND SURFACE EL NA I '-" 0(J1 « er:: t- :J ~3 (J1 :J 0... CASING ELEVATION NA Q.. Z «0 w I D::...J 0 I-CD ~'-' w DESCRIPTION 50 a... I I ~ - some clay content. sc Dense, redbrown, fine to coarse-grained CLAYEY SAND. Moist. 180 36 60 J 70j r 1 f 80 j 82 45 Lo 56 90 sm Dense, redbrown. fine to coarse-grained SILTY SAND. Moist, trace clay. sw Very dense, brown, fine to coarse-grained SAND. Moist, trace silt, trace clay. sp Very dense, brownr fine-grained SAND. Moist, micaceous, cemented. 110 67 100 CLIENT PROJEC . ;0. LOCA j'O.-.J CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA -~ -~= :;:::::.\ ~:::: - - (~~~ -=--= ~-.: -" --... -:~.' - ~:-::- - --- , w u Z,........ l- e) <{f- W f-o W Z ~o l.J... - cnl.J... o ,--... w w (/) z « E CI::CI:: .-J W w Q. U - a.. za.. Cl:: 2 (/) I a.. 0U1 « '-" I- :::> !=~ U') :::> Q. Z «0 w I ' g: .-J 0 wOO : z'-' w -100 a.. - j - -110- - l l120 f I 2 ....... S w 36 - 5' ....... NOTES: sp · . . . . . BORING NO. B-5 w FIELD ENGINEER J. Carter -1 G::: EDITED BY M. Dahl ~ CHECKED BY P. Miller Cl. .. . . . . . . SHEET 3 OF 3 DA TE BEGAN November 4, 1988 DATE FINISHED November 6, 1988 GROUND SURF ACE EL. N A CASING ELEVATION NA DESCRIPTION Very dense, light brown, fine to coarse-grained SAND with fine- grained GRAVEL. Dry. TOTAL DEPTH = 120 FEET 1) Drilling by ABC Liovin Drilling Company, Signal Hill, California, using a Failing F-10 drilling rig with 8-inch diameter. hollow-stem augers. Due to soil conditions, air rotary drilling with a 6-inch tri-cone bit also utilized. _ 2) See Boring Log Legend for explanation of symbols and terms. 3) Borings backfilled to surface with a 7-sack cement/bentonite grout ..... . ..... . ..,.. . · . ..0 . .. · . .. . ... . ... . · , .... . ... . ... . ... . .... . ... . ... . '" . ,..,. . ... . .. . . . - . · . , . . . . . . . · . . . with 3/8-lnch rock. CLIENT PROJECT NO. LOCA TION CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA was ~~ ; . (C\~ {~~. ~ / ~S~· - --~ '= -- i W u BORING NO. B-6 z........ SHEET 1 OF 2 I- <t:1- W <-' 1-0 W Z ~o 1.1... 0......... U'J u.... w w FIELD ENGINEER J. Carter DA TE BEGAN November 6, 1988 w U1 « E a::: a::: .....J .....J Z wa. w Q... Ü G: EDITED BY M. Dahl DA TE FINISHED November 6, 1988 0::: a. za. 2 U1 0 CHECKED BY P. Miller GROUND SURF ACE El. NA I '-" 0c/) « 0::: I- ::J 1=3 U1 ::J a.. CASING ELEVA 1l0N NA Q... z ~o w I t-...J Q UJCD Z::,-" w DESCRIPTION 0 a. sm Dense, brown, fine to coarse-grained SILTY SAND. Dry, <1 38 sw Medium dense, fine to medium-grained SAND. Dry. <1 13 10 <1 75 sm Very dense, graybrown, fine to medium-grained SILTY SAND. Dry. 20 <1 I 52 .30 sw . . . . i J . . . . sm .30 51 40 Very dense, light brown. medium to coarse grained SAND. Moist. Very dense, brown. medium-grained SANDY SILT. Dry. 16 51 - very fine-grained. Increase in silt content. 50 CLIENT PROJECT NO. LOCATION CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA ,~~ :: . \~) ~ \'~: 2 -i- ~- ~".. ¡, ~ w ü z........ I- «I- w C--' 1-0 W Z ~o u.. a........ If) u.. W LU (/) Z <{ E a:::~ ....J w w a... u a::: c.. za.. 2 (/) I c- o(/) <{ --... I- :::> 1=3 (/) :J a.. z <1:;0 W I c:::-' a l-aJ w.......... Z LU 50 a.... sm BORING NO. B-6 SHEET 2 OF 2 w FIELD ENGINEER J. Corter DA TE BEGAN November 6, 1988 ....J G: EDITED BY M. Dahl DA TE FINISHED November 6, 1988 0 CHECKED BY P. Miller GROUND SURFACE EL NA a::: a... CASING ELEVATION NA DESCRIPTION sc Dense, redbrown, fine to medium-grained, CLAYEY to SILTY SAND. Dry. 60 - increase in fine-grained sand. 70 TOTAL DEPTH = 70 FEET No water encountered while drilling. NOTES: 1) Drilling by ABC liovin Drilling Company, Signal Hill. California. using a Failing F-10 drilling rig with 8-inch diameter, hollow-stem augers. 2) See Boring Log Legend for explanation of symbols and terms. 3) Borings backfilled to surface with a 7-sack cement/bentonite grout with 3/8-inch rock. CLIENT PROJECT NO. LOCA TlON CITY OF BAKERSFIELD 88- 250 BAKERSFIELD, CALIFORNIA - ::\ ,~~,c _ - _~;;_:_ __ - --,'- ~:: "_ i-== " APPENDIX B GRAIN SIZE DISTRIBUTION CURVES --. ~- -- --~ ~--, - - - -~ ----.. ~. -- "'~-~ -- ~-~ ----- - ConverSe Consultants Orange County Consulting Engineers and Geologists @ 9272 Jeronimo Road SUite 123-A Irvine. California 92718 Telephone 714 859-5587 December 2, 1988 Mr, Jay Carter Senior Project Geologist Geosystems Consultants, Inc, 18218 McDurmott East Irvine, California 92714 Subject: Laboratory Test Results (CCOC Project No, 88-32146-04) Dear Mr, Carter: Presented herein are the results of the laboratory testing of the nine (9) soil samples you provided, Moisture content, unit weight and gradation tests were conducted observing strict ASTM standards, The following samples were tested, BorinQ besiQnation 2 3 4 SamDle DeDths 20,30,40,60,80 30 40,60,80 If there are any questions, please do not hesitate to contact us, Yours Truly, CONVERSE CONSULTANTS ORANGE COUNTY 1rA¡~{Í~~~ Michael A, Rendina Senior Staff Geologist__ MAR/hdf A Wholly Owned Subsidiary of The Converse Professional Group BOULDERS & COBBLES UNIFIED SOIL CLASSIFICATION GRAVEL SAND SILT OR CLAY COARSE FINE FINE U.S. STANDARD SIEVE No. HYDROMETER U.S. SIEVE SIZE IN INCHES 10 3 3/4 3..ß 10 20 40 60 140 200 , , , I' ~ R\ ~' 1" I [I I I 1'" , \ \'~ '~ \ \ \ ~\ \ \ \ \ \~ ~ \ " ~\ \ ~ )) ~, o " I I, I , I I I I I I I , I, , I I 1 8 I- 1: C:J H W :3 >- aJ C:J Z H (/) (/) q: Q. I- Z W (J a:: w Q. 6 4 2 1000 10 1 0.1 GRAIN SIZE IN MILLIMETERS 00 0.001 100 0.01 LL PI Symbol Location Depth. ft % % DescriPtion 0 02 20,0 NP NP Brown Silty Sand (SM) + 02 30,0 NP NP Yellowish Brown'Silty Sand (SM) * 02 40,0 NP NP Yellowish Brown Silty Sand (SM) GRAIN SIZE DISTRIBUTION o 20 40 I- :x: " H W :3 >- aJ a w z H q: I- W a: I- z W (J a: w Q. 60 80 Geosystem- Unit Weights· Irvine, California ® Converse Consultants Orange County Project No. 88-32146-04 -. BOULDERS & COBBLES UNIFIED SOIL CLASSIFICATION GRAVEL SAND SILT OR CLAY FINE COARS FINE COARSE U.S. SIEVE SIZE IN INCHES U.S. STANDARD SIEVE No. HYDROMETER 10 3 3..4 3/8 10 20 40 60 140 200 " I I I I I' I I I ~ I I I , ii' 1'111 I 0 " ìSI \ \ \. \ \ \ \~ 2 \ \ \ \ \ ~ ~ \ 6 \ \\ \. " ~ \ l 8 \ o I I I I I I I I I I, , I II I I I I, , 1 8 I- 1: CI 1-4 UJ :3 >- III CI Z 1-4 If) If) <I Do. I- Z UJ ü a: UJ Do. 6 4 2 1000 10 1 0.1 GRAIN SIZE IN MILLIMETERS 0.01 100 LL PI Symbol Location Depth. ft % % Description 0 02 60,0 NP NP Dark Brown Silty Sand (SM) + 02 80,0 Brown Clayey Sand (SC) * 03 30.0 NP NP Brown Silty Sand (SM) GRAIN SIZE DISTRIBUTION 00 0.001 o o I- J: CJ 1-4 UJ :3 >- III C UJ Z ... <I I- UJ a: I- z UJ ü C:: UJ Q.. o o Geosystem- Unit Weights Irvine, California Project No. 88-32146-04 ® Converse Consultants Orange County .. BOULDERS & COBBLES UNIFIED SOIL CLASSIFICATION GRAVEL SAND SILT OR CLAY FINE COARS FINE COARSE U.S. SIEVE SIZE IN INCHES U.S. STANDARD SIEVE No. HYDROMETER ... 1: o I-t UJ :3 >- III CJ Z I-t II) II) ~ Q. ... Z UJ Ü It UJ Q. 3 3/4 3,.~ , " 10 20 40 60 . 140 200 II I I I I I I ~~ ~I" I I I 1"11 I I \. \ ~'\ ~ \ ~ \\ ~] \ , Ì\ 01 I , I I , III I I II II I I I I I I, I 1 10 8 6 4 2 1000 00 0.001 100 10 1 0,1 GRAIN SIZE IN MILLIMETERS 0,01 LL PI Symbol Location Depth. ft % % Description 0 04 40,0 NP NP Brown Silty Sand (SM) + 04 60,0 NP NP Brown Silty Sand (SM) * 04 80.0 NP NP Brown Silty Sand (SM) GRAIN SIZE DISTRIBUTION o 20 40 ... 1: C!I I-t UJ :3 >- III a UJ z I-t ~ .... UJ It .... Z UJ Ü It UJ Q. 60 80 Geosystem- Unit Weights Irvine, California ® Converse Consultants Orange County Project No. 88-32146-04 '" APPENDIX C CERTIFICATES OF ANALYSES -~ -" - -- .-- -~- - -,\ .~;- - -- ~- ~--- -- :> .' ~;-'- iå Del Mar Analytical : _1:1 18102 Sky Park South. Suite F ' INine. CA 92714 .... ... (714) 261·1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/02/88 11/07/88 11/11/88 11/17/88 Attention: M. Mehran Project: 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene ppm Toluene ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-2 5' 811-197 0.09 0.3 <0.05 1.3 530 B-2 10' 811-198 4.6 160 53 92 23000 B-2 20' 811-199 120 1500 220 550 40000 B-2 30' 811-200 96 930 110 290 19000 B-2 40' 811-201 84 260 99 160 4000 B-2 60' 811-202 58 460 52 100 11000 This analysis was ~erformed using EPA methods 5030 with 8015 for hydrocarbon detectlon (FID), and 8020 for BTX detection. (PID) Del Mar Analytical ~s~ Laboratory Director · Iii: Del Mar Analytical ,,- 18102 Sky Park South. Suite F . Irvine. CA 92714 (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/02/88 11/07/88 11/11/88 11/17/88 Attention: M. Mehrcm Project: 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene ppm Toluene ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0,05 0.05 0.05 0.05 1.0 B-2 80' 15 100 24 49 5200 811-203 B-2 100' 1.1 2.5 1.9 0.6 20 811-204 B-2 120' 0.1 0,5 0.1 0.1 6.1 811-205 B-2 135' <0.05 0.3 0.5 0,05 14 811-206 B-2 140' 0.3 0.3 0.5 0.2 7.4 811-207 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID) , and 8020 for BTX detection. (PID) Del Mar Analytical ~s~ Laboratory Director I· i:. Del Mar Analytical ,- 18102 Sky Park South. Suite F ' Irvine. CA 92714 (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/03/88 11/07/88 11/11/88 11/17/88 Attention: M. Mehron Project: 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: soil Samples Benzene ppm Toluene ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-3 5' 811-208 <0.05 <0.05 <0.05 <0.05 6.3 B-3 10' 811-209 0.3 0.8 0.3 0.05 2.3 B-3 20' 811-210 1.0 4,3 1.3 0.3 5.7 B-3 30' 811-211 22 120 35 69 8700 B-3 40' 811-212 43 130 38 68 9300 B-3 60' 811-213 13 52 15 22 2300 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID) , and 8020 for BTX detection. (PID) Del Mar Analytical JÞJ±¡t Gary Steube Laboratory Director ' ' I· â Del Mar Analytical " . 18102 Sky Pari< South. Suite F ' Irvine, CA 92714 , .. (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/03/88 11/07/88 11/11/88 11/17/88 Attention: M. Mehran project: 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene Toluene ppm ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-3 80' 0,5 0.9 0.7 0.5 29 811-214 B-3 100' 0.5 0.8 0.6 0.2 3.9 811-215 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID) , and 8020 for BTX .detection. (PID) Del Mar Analytical G~J!i Laboratory Director · I···· S Del Mar Analytical ': .. 18102 Sky Park South, Suite F ' Irvine, CA 92714 'C .. (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, Suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/03/88 11/07/88 11/13/88 11/17/88 Attention: M. Mehran 88-250 City of Bakersfield Total Hydrocarbons with BTEX distinction: Soil Samples project: Analysis: Benzene ppm Toluene Ethylbenzene ppm ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-4 5' 811-216 <0.05 6.2 <0.05 8.3 1300 B-4 10' 811-217 0.2 0.4 0.2 3.7 860 B-4 20' 811-218 6.3 41 21 32 3100 B-4 40' 811-219 42 290 76 120 9300 B-4 60' 811-220 38 120 59 93 7200 B-4 80' 811-221 33 190 63 84 6300 B-4 100' 811-222 21 130 51 65 6100 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID), and 8020 for BTX detection. (PID) Del Mar Analytical b~ Laboratory Director Iii: Del Mar Analytical ,.. 18102 Sky Park South. Suite F ' Irvine. CA 92714 (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/04/88 11/07/88 11/15/88 11/17/88 Attention: M. Mehran Project: 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene ppm Toluene ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-5 5' 811-223 0.8 0.7 <0.05 0.3 3.0 B-5 10' 811-224 0.7 0.4 0.6 0.2 1.9 B-5 20' 811-225 1.1 1.3 1.1 1.2 28 B-5 30' 811-226 <0.05 1.5 0.8 0.2 1.0 B-5 40' 811-227 1.3 1.2 0.6 0.1 1.0 B-5 60' 811-228 <0.05 <0.05 <0.05 <0.05 2.9 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID) , and 8020 for BTX detection. (PID) Del Mar Analytical G~sEi Laboratory Director Ii: Del Mar Analytical , ,- 18102 Sky Park South. Suite F ' Irvine. CA 92714 (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/04/88 11/07/88 11/15/88 11/17/88 Attention: M. Mehran Project: 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene Toluene ppm ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-5 80' 0.4 1.3 0.3 0.2 1.0 811-229 B-5 90' 0.5 1.3 0.4 0.3 2.5 811-230 B-5 100' 0.1 0.5 0.7 0.2 1.8 811-231 B-5 120' <0,05 <0.05 <0.05 <0.05 <1.0 811-232 This analysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID), and 8020 for BTX detection. (PID) Del Mar Analytical ~ltt Gary Steube Laboratory Director ~ !i if: Del Mar Analytical ': -= 18102 Sky Park South, Suite F ' INine, CA 92714 ,~ .. (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/06/88 11/07/88 11/16/88 11/17/88 Attention: Project: M. Mehran 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene Toluene Ethylbenzene ppm ppm ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0.05 0.05 0.05 1.0 B-6 5' 811-233 1.5 6.9 1.2 0.5 10 B-6 10' 811-234 0.1 0.5 0.4 0.3 2.1 B-6 20' 811-235 <0.05 <0.05 <0.05 <0.05 <1.0 B-6 30' 811-236 <0.05 <0.05 <0.05 <0.05 <1. 0 B-6 40' 811-237 <0.05 0.05 0.6 0.5 1.3 B-6 50' 811-238 0.1 0.1 <0.05 0.07 1.8 This nalysis was performed using EPA methods 5030 with 8015 for hydrocarbon detection (FID), and 8020 for BTX detection. (PID) Del Mar Analytical G-!;rJ!.te Laboratory Director 7' I'; i: Del Mar Analytical ..~ ..J! 18102 Sky Park South. Suite F ' Irvine. CA 92714 , ... (714) 261-1022 ' FAX (714) 261-1228 Geosystem Consultants 18218 McDurmott East, suite G Irvine, CA 92714 Date Sampled: Date Received: Date Analyzed: Date Reported: 11/06/88 11/07/88 11/16/88 11/17/88 Attention: M. Mehran Project: 88-250 City of Bakersfield Analysis: Total Hydrocarbons with BTEX distinction: Soil Samples Benzene Toluene ppm ppm Ethylbenzene ppm Xylenes ppm Total Hydrocarbons ppm Detection Limit 0.05 0,05 0.05 0.05 1.0 B-6 60' 0.2 0.2 0.2 0.1 1.0 811-239 B-6 70' 0.1 0.4 0.6 0.6 1.3 811-240 This analysis was ~erformed using EPA methods 5030 with 8015 for hydrocarbon detect~on (FID), and 8020 for BTX detection. (PID) Del Mar Analytical G~~ Laboratory Director .. ',: ~:~~~~.~?~,~!et~~! II. (714) 261-1022 ' FAX (714) 261-1228 November 18, 1988 Geosystem Consultants 18218 McDurmott East, Suite G Irvine, CA 92714 gç Data Report Project: 88-250 QCjQA Data for samples: 811-197 through 811-240 Sample Integrity Comments:Received intact; on ice Holding Time Observed? Yes Sample Number 811-203 811-212 811-225 811-238 Sample Number 811-197 811-206 811-225 811-233 Analyte original Result ppm Duplicate Relative Result 9.: Difference 0 pprn 22.1 7.4 42.5 1.0 1.28 4,5 1.8 5.7 Ethylbenzene 23.8 Benzene 42.8 Toluene 1. 34 TPH 1.7 Original Spike Spike % Analyte Result Added Result Recovery ppm ppm ppm TPH 330 325 615 88 Toluene 0.33 0.3 0.6 90 TPH 18.3 19.5 35.6 89 TPH 10.1 20.0 9.97 99 Del Mar Analytical G~s~e Laboratory Director ". SITE II CHARACTERIZATION FIGURE 3 · WILLIAM H, PARK REGISTERED GEOLOGIST NO. 227' 3040 19TH STREET. SUITE 10 BAKERSFIELD. CALIFORNIA 93301 TELEPHONE (80S) 327-9681 August 5, 1988 Mr. George Sweet p, O. Box 80963 Bakersfield, California 93380-0963 Dear Mr. Sweet: In accordance with a request by Mr. Roy Hall of the City of Bakersfield, Community Development Department, a site characterization study for two underground tank locations situated on the future homeless shelter property has been performed. The property is located in the southwest quarter of Section 28, T.29S., R.28E., M.D.B.& M. in Bakersfield, California (see Attachment A). It is comprised of the property designated by 1530, 1600, and 1610 East Truxtun Avenue. Two 1,000 gallon gasoline tanks were located near the northwest corner of the property near the northwest corner of the existing building at 1530 East Truxtun Avenue. This will be referred to as Site No.1 (see Plate 1), One 550 gallon diesel tank was located just east of a shed that has now been removed. This will be referred to as Site No, 2 (see Plate 1). On May 26, 1988, Apex Environmental removed the two tanks from Site No. 1 and the single tank from Site No.2. Soil samples were collected at 2 feet and 6 feet below the bottom center of each tank. Gasoline contamination was found in all four soil samples from Site No.1. Total petroleum hydrocarbon concentrations ranged from about 800 ppm to 7,000 ppm. Contamination was also found below the diesel tank at Site No.2. Total petroleum hydrocarbon concentrations were 10,756.56 ppm at 2 feet and 11,017.11 ppm at 6 feet. On January 20, 1988, Mr. Hall received a letter from Mr. Bill Scheide of the Kern County Health Department requiring that a site ~ " Mr. George Sweet August 5, 1988 Page 2 characterization study be conducted on the property to delineate the vertical and horizontal limits and the degree of contamination. The sediments on the property are composed of alluvial deposits consisting of silts, sands, and gravel. Based on Kern County Water Agency data, the depth to the primary groundwater table below the property is in excess of 200 feet. No perched groundwater is known to exist below the property. Two test holes were drilled at Site No.1 in July 1988. Test Hole No. 1 was located just west of the north end of the former dispenser island location as shown on Plate 1. Test Hole No. 1 was drilled to a depth of 40 feet. Soil samples were collected at 5 foot intervals starting at a depth of 5 feet below the surface. Field screening indicated the presence of significant levels of gasoline contamination throughout the 40 foot depth of this hole. An attempt was made to drill deeper, but the drilling rig could not penetrate any further. A larger drilling rig was used several days later to drill Test Hole No. lA, Test ~ole No. lA was located about 6 feet south of Test Hole No, 1 (see Plate 1), Test Hole No. lA was drilled to a depth of 85 feet. Soil samples were collected at 5 foot intervals starting at a depth of 45 feet below the surface. Samples were not collected above 45 feet because the samples from Test Hole No. 1 should approximate the corresponding sample depths in Test Hole No. lA. Again, field screening indicated the presence of significant levels of gasoline contamination throughout the 85 foot depth of the hole, All of the soil samples from both test holes were analyzed on site with a Gastechtor OxyjSurveyor and then sealed and placed on ice. WILLIAM H, PARK Mr. George Sweet August 5, 1988 Page 3 Selected samples were delivered to a state certified laboratory and analyzed for B.T.X. and T.V.H. (see Attachment B). The 5 foot and 25 foot samples from Test Hole No. 1 were analyzed and the 45 foot, 65 foot, and 85 foot samples from Test Hole No. lA were analyzed. The 5 foot sample from Test Hole No. 1 reportedly contained 4,600 ppm T.V.H. and high levels of B.T.X. The 25 foot sample from Test Hole No.1 reportedly contained 380 ppm T.V.H. and moderate levels of B.T.X. The 45 foot sample from Test Hole No. lA reportedly contained 12,000 ppm T.V.H. and high levels of B.T.X. The 65 foot sample from Test Hole No. lA reportedly contained 400 ppm T.V.H. and moderate levels of B.T.X. The 85 foot sample from Test Hole No. lA reportedly contained 510 ppm T.V.H. and moderate levels of B.T.X. Attachment C lists the results of the chemical analyses. Attachment D shows borehole logs of Test Hole Nos. 1 and lA. The chemical analyses of selected soil samples from Test Hole Nos. 1 and lA indicate the presence of high levels of gasoline contamination at depths of 5 feet and 45 feet and moderate levels of gasoline contamination at depths of 25, 65, and 85 feet. Field screening indicated moderate to high levels of contamination from top to bottom in both test holes. The borehole logs in Attachment D show the values obtained with the Gastechtor meter as well as notes regarding hydrocarbon odors. The values listed for the chemical analyses (Attachment C) should be considered minimum levels since gasoline vapors can escape in significant quantities prior to analysis even with strict preservation techniques. Given the current data, the total depth of contamination cannot be assessed. A deeper test hole is needed to acquire the necessary data. Also, two offset holes are needed to determine the horizontal extent of contamination. A proposal will be made under separate WILLIAM H, PARK '\ J¡ Mr. George Sweet August 5, 1988 Page 4 cover to drill three deep test holes to a maximum depth of 150 feet each. The first test hole would be drilled roughly between the two tank locations similar to Test Hole Nos. 1 and lA. It would be drilled until the maximum depth of contamination has been exceeded or to 150 feet, whichever is first. The two offset holes would be drilled to the north and west of the first hole. The exact locations would depend on the results of the first hole. The depths of the offset holes would be based on the same criteria as the first hole. Data provided by these three proposed test holes should be adequate to delineate the vertical and horizontal extent and the degree of contamination at Site No.1. We feel it is unlikely that contaminants exist below 150 feet, but we can't be certain without drilling. Also, we feel that the ,85 foot total depth reached so far does not represent the total depth of contamination at Site No.1. Three test holes were drilled at Site No.2 on July 19, 1988. Test Hole No. 4 was drilled through the center of the former tank location (see Plate 1). Test Hole No.5 was drilled about 12 feet east of Test Hole No. 4 and Test Hole No. 6 was drilled about 9 feet north of Test Hole No, 4 (see Plate 1), Test Hole Nos. 4 and 6 were drilled to a depth of 40 feet each and Test Hole No. 5 was drilled to a depth of 30 feet, Soil samples were collected from each test hole at 5 foot intervals starting at a depth of 5 feet below the surface. All of the soil samples were analyzed on site with a Gastechtor Oxy/Surveyor and then sealed and placed on ice. Selected samples were delivered to a state certified laboratory and analyzed for T.P.H. and benzene (see Attachment B). The 10, 25, 30, and 40 foot samples from Test Hole No. 4 were analyzed. The 15 and 30 foot samples from Test Hole No.5 were analyzed. The 20, 25, 30, and 35 foot samples from Test Hol~ No. 6 were ~nalyzed. WILLIAM H, PARK ~, r... 7".. Mr. George Sweet August 5, 1988 Page 5 Field screening indicated the presence of gasoline contamination (gasoline odor, relatively high meter readings) and the chemical analyses confirmed this. The 10 foot sample from Test Hole No. 4 reportedly contained 350 ppm T.V.H. and 1,200 ppm T.P.H. (gasoline). Moderate levels of B.T.X. were also detected in this sample. The 25 foot sample from Test Hole No.4 reportedly contained 17,000 ppm T,V.H. and 41,000 ppm T.P.H. (gasoline). Very high levels of B.T.X. were detected in this sample. No benzene or T.P.H. (diesel) was detected in any of the remaining samples submitted for analyses. Attachment E lists the results of the chemical analyses. Attachment F shows borehole logs of Test Hole Nos. 4, 5, and 6. Mr. Stan Corner, chemist at SMC Laboratory, reports that when an analysis for benzene is performed and benzene is detected, toluene, ethylbenzene, xylenes, and isopropylbenzene must also be reported. Hence, the analyses of the 10 and 25 foot samples from Test Hole No, 4 reported all of the B.T.X. constituents rather than just benzene. Mr. Corner also stated that the T.P.H. values reported for these two samples are probably elevated because a diesel factor was used in the calculations instead of a gasoline factor. However, the B.T.X. and T.V.H. values are correct and the analyses do indicate gasoline, not diesel, Field screening of the samples from Test Hole No. 6 indicated the presence of contamination at depths of 25 and 30 feet (see Attachment F). Although the laboratory reports do not confirm this, Mr, Comer stated that some contaminants were found in the 25 foot sample, but the levels were below the 50 ppm minimum reporting level utilized. Based on the results of this investigation, the vertical and horizontal extent and the degree of contamination at Site No. 2 can be inferred. The interpretation presented below combines the information provided by both the laboratory reports and the field screening. Two areas of contamination are defined as follows: WILLIAM H. PARK l' "¡-. Mr. George Sweet August 5, 1988 Page 6 (1) contaminated area - T.V.H. values generally greater than 100 ppm, and (2) slightly contaminated area - T.V.H. values generally less than 100 ppm but greater than 0 ppm. The contaminated area extends from the bottom of the tank's backfill cavity (depth = 8 to 9 feet) to a depth of about 28 feet. The slightly contaminated area extends down to a depth of about 39 feet. A cross section through Test Hole Nos. 4 and 6 showing this interpretation is presented in Attachment G. The areal (horizontal) extent of contamination is expected to be oval in shape reflecting the rectangular shape of the tank's backfill cavity. When product releases occur into the backfill, the fluid will migrate rapidly, to the bottom of the backfill cavity, spread across the bottom of the cavity, and then continue to migrate downward. It appears that the contaminated area shown on Attachment G has not spread much beyond the outline of the backfill cavity. Attachment H shows the areal extent of the contamination at a depth of 20 feet. The areal extent of the contaminated area at other depths would be of similar shape but of lesser extent. Three possible remediation measures for the contamination at Site No, 2 are excavation and disposal, vapor extraction, and biodegradation. A no action alternative is not recommended because of the high contamination levels, particularly B.T.X., found in the 25 foot sample from Test Hole No.4, It is estimated that about 80 cubic yards of contaminated soil exists in the contaminated area defined on Attachments G and H.This assumes that the backfill cavity was backfilled with relatively clean soil as the 5 foot sample from Test Hole No. 4 indicates. If the soil in the backfill cavity is also contaminated, about 100 cubic yards of contaminated soil exists. Excavation and disposal at a permitted disposal site is probably the most practical solution bec¿~se vapor extraction or biodegradation WILLIAM H, PARK -:>< Mr. George Sweet August 5, 1988 Page 7 would require at least several months to complete. The costs of these three methods are expected to be similar. Proposals for remediation should be sought from appropriate environmental contractors. If you have any questions regarding this report or further work at the site, please feel free to call. 3584 d'~ ~ ~ Thomas F. Gutcher Assistant Geologist DRS/TFG/jk WILLIAM H. PARK I ~ ':~- ,t;:.1......~ " .~ ~ v:~~ ~ ·i~')i--:f , .~:.~~y 1'- ~~ IE" '., '-J/:::~~' ~n..' ~..D-+- ~ '1'-, \ fJ1\ -)'3'_' -.. , ..: ,'" - /\_ Î \ 16 ~ ~, A~ iWM!WS.TY! ï7 Ave"-;, "C/:/ ~ . . " _ 11ì"j,t>:,,,<T, ~. ". n -V r' i 7 ~ - '-' ~I ~,;..-- ", '" _,.J~4 ~~. '..:';. :-.;:c~ ' - ..,.~ -\:.'~ L ;::~~r ~ ~: j ~ i -L~1 '-- \f\ M-fr ti u -:-'- ~ " ,'~ ,._, ".,';; -::Z',.,: ~~ ' .. .....~/,¡t...::_ 'I:-, / ~ '-",::;:,~._ 'kti4.'~¿"''''V~ (,} :-. .\: --.- ~ /7 l? -' ... oK: . · :\,! - tf~ 7' ..D...-v~ ~~~ J.W~Æ j, l'--.-~ '''-. '-:..,:,~/.!- ~"- ~.,,\-;" ~.;;:".. :- !\.... --=ç.,7 .-.¡j.~,-:...s'~õñ-~·-!i)2/Y__¡'j' ~~i ". 800 - '---. Ei', ,'4 ...~.~ " ,- '-- \ " ~ .~,Ö8L'. R¡I~.J'·,. ""- - . -.. 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J /I ~ ,,' """ ....... __ ........... ........ --......,,. I ~::---... -........¡¡,..... .'-.. ¡--... r~~.' /~ 'F~h'r::J~I~:J\..r--.. ~BM I ~'""".!""",.!!,,,,.I'--.. ........ _ -=:·_____--SCh~ ~ ,¡,,'j'.......--" ~ .::-;::-''t ~ I "1~~~ ' ,., , .... 2" -=-- '., ..r::-· ~ ~- r..i - -1/ "\ I J..¡J "j ¡ /. ...10........ t-- ." ::-- ~ .::.----~_ --~...: :::s;::;~li:i.................. ----......... ~ n~L £A2/-;.,""""'- C IFoJ IA .1 i IF AVE T<::t---' =~~;;;:::.,,- ~ '-... ---._~:~~, __........ r__::::_ --- ~ - ¡ ~p~~t1.. c 1&1 ----- ?QJ~~VC,põ~ ~,.--, ,- - O 0 ::. I 11"'*..... I :.., ; Ii r;:;.: 'I( / ~ '" . , - '101 I;:;; I - --- =iiòt== ' '> b L 1 = I n) . --rr-......:: Dllve·'n, "7't'~, OCATION MAP S h / I(J 0 ThUlet---- I:' c PO ' ..' AVE I --- L \ ~ f";; <=> \~::'...JlI:; L",oo. --- ¡;::;;' !J ~ tV., n: ~; - f-. I ~ ~.. ~I ~. ! ....... ¡ 'f/\. '." . I ~ l¡~ ~ m 33 "" ':IRGIN~A" I"; , : vj'ï.'/r ....,.- ~_~.. -. --: ~ ' v' '(;,//Ij f?là ~ II ~ 1\ - F.i ~ , ¡ ,~/. ~ œ311 ~hr~ . I ~ !: ~ ; ¡ .A.,r I m!æJ :r . I: > ! , .. - 'lli c. ¡) I ! ~ ~ II i IIII -.. - ~u~ A'Q~:~ ~li-r"-"39 " ----- ~~ ¡'íÍiD ! '. I - BRVNOAGE ~ - ...- ... --....... _-.----:)85 .--. FUTURE HOMELESS SHELTER SITE EAST TRUXTUN AVENUE BAKERSFIELD, CALIFORNIA r-o- --~ v ,- .. " SCALE: 1."=2000· ~ o , I~ c.. 19'¥-/ ~ ri<· - . ¡:: ........ ~ ~ 1386 Source of Base Map: U.S,G,S, Oil Center and Lamont 7! Minute Quadrangles" - 388 .. , .... II , - /I ' II /if /17 ¡r =-= ëJ Sewa¡e :t ;Disposal I",:¡~ I lÌ"'-. I ¡ , ! c:...... Attachment A . . . CIIAIN OF CUSTODY RECORD ; --- - Collector Client Name: ~f'M GlATCHE12.. Name: 6r:;otZ..6t= SWE£T -- Company: W.H. Park & Associates Company: Sl1mE - Address: 3040 19th St., Suite 10 Address: PD. rso 3_ Bakersfield, CA 93301 f3¡1 JL "12, 93380--096~ Telephone: (805) 327-9681 Telephone: ore Bill to Collector Bill to Client 'S ,Cr5 L Y --... --.. ..---..--- - -- Sample No, Date Time Description Analvsis Reauested Laboratorv No. 1-1. iF / . D-) /, ~/6 S ~ t;;' ") 2.- 50 " s' 11 1111.7 LE ~ - F o,ç¿~ € ~ B, .-r x. t T. V H. \CStc4 - \S~ GA S 'j¡q N K. SIn=. 1-I.:It' I A 07/18 1t6 ~ f-s-; 05; 8Ç' SA,YI/,L-ES-f'o¡:¿,ttEP-. B,T X. t T 1I H. \ 5~l.JJ - \ SlL, 6,1.f 7í1/\/k' SITE 1-1 It 4- 07 /J 1 1'6 g ~ 10' 2-S' ~O' 10' SlifHPLES- - 'J H i ß6Nz-ENE 15(09 - \S7' J .I.) 7à - F o;:!f1'1 ~ r.z. DIG Sf:. L . q N Ie. .s Ir--£ / , I. . , 'H.ifS- O~/11/68 7 /5" 3 D' SrI/YIPLE5 - FblZrJ-1~-te.. , .I o I-J. 1-1. f /3 E /\J ~ E NG JSì3 -- 157 DIESEL-- ÎÃ/II/<' SITE 1-1.#0 07/!11<6<? 7 2-0') ZS~30~ 3,Ç' S/1,Y7PUES- T; P 1-1, ~ 13 £¡V-èENt? l~:ns- \S7~ ('- H.-?-»1GI!.. PII;¿>EL. T4NK... 51/£ fJ.s S Dc. Date :D'J /2.0 /g-g Date: ì "2D -1s1s- Date: Date: Date: Date I I of Sheet D CoL I<(;:€p PARK AND ASSOCIATES ~J. Company: W 1-/, PI'9I<. K Company: <3 WlO Company: Company: Company: Company: Method ti p $', H WILLIAM ~ Location of Sam Name: ¡--u TfAI'<E HomELE Company: £, r Ý 01= /31 Address: /530 ¡bOO. I(,ID ) , BAkEIZ.S F IEL Telephune: ( ) Bill to Property Owner 5, Relinquished By: Recei ved By: c::t Relinquished By: Received By: Relinquished By: Received By: J: 7. T. r -r: .. .. _<SMC Laboratory Analytical ChemistJy Client Name: George Sweet Address- P.o. 80963 Bakersfield, CA 93380-0963 Date sample received 7-20-88 Date analysis completed: 8-02-88 Date of report 8-02-88 Laboratory No, 1564 through 1578 RESULTS OF ANALYSIS #1564 ID: T.H. #1-5' Benzene Toluene Eth~'lbenzene p,m-Xylene a-Xylene Isopropylbenzene TVH ugm/gm 62 270 96 510 280 42 4,600 ~1565 ID: T,H, #1-25' Benzene Toluene Ethylbenzene p,m-Xylene o-Xylene Isopropylbenzene T\'H ugm/gm 3.3 20 11 43 25 3,6 380 Project: Future Homeless Shelter MRL,ugm/gm 0.1 0, 1 O. 1 0.1 0, 1 O. 1 1.0 MRL,ugm/gm O. 1 0, 1 0.1 0.1 0, 1 0, 1 1.0 Method of Analysis: California DOHS LUFT manual :-JRL = ~1i nimum Reporting Level TVH = Total Volatile Hydrocarbons ugm/gm = microgram per gram ND = Not detected ~~ Stan Comer 3155 Pegasus Drive · Bakersfield, CA 93308 · (805) 393·3597 P.O. Box 80835 · Bakersfield, CA 93380 Attachment C '" Laboratory ~o, 1564 through 1578 Project: Future Homeless Shelter RESt:LTS OF M~..l.LYSIS ::1566 ID: T,H, :;IA-45' Benzene Toluene Ethylbenzene p,m-Xylene a-Xylene Isopropylbenzene TVH #1567 ID: T.H, #1A-65' Benzene Toluene Et.h;d benzene p,m-Xylene o-X:,--lene Isopropylbenzene TVI- =1568 1D: T,H. =1A-85' Benzene Toluene E t h ;,- } be n zen e p,m-\;,-ìêne o-Xylene Isopropylbenzene TV ] ugm/gm NRL,ugm/gm 320 O. 1 1,700 0.1 380 0, 1 1,700 0.1 830 0,1 71 O. ] 12,000 1.0 ugm/gm MR.L,ugm/gm 3.5 O. 1 21 0, 1 1 ') 0, 1 .L.J 56 0, 1 31 0.1 4,5 O. 1 400 1.0 ugm/gm MRL,ugm/gm 1.7 0, 1 11 0.1 11 0, 1 48 0, 1 32 0, 1 5.6 O. 1 :il0 _ r) .1 . \. :'lethod of Anal:.'sÜ:: California D()il~; Ll:FT manual :'iRL = :,¡jnimum Rp.porting Level TVI-I = Tot.al \'olatile Hydrocarbons ugm/ gm = mi crogram per g"ram' ~D = Not detected \~~ Stan Comer o ..-4 oot: ~ 3 0.-4 ~ 0 4,JU .~ ..... o - - - , - 5 -' -' - . - - . 10 -. , - · - - . . 15 - - - .. . +J _'., #I. " Q) Q) ~ . ' - tI . . (J .. - 20 - - .c .w - ~ - . o - , 25 - - - . -' . .. · - . 30 - , - · - . - . , - ". .' - , · . , · . . · . · , . · , , , . . , . · tn .c ~ c. ~ Q Q) ,.... c. e co C/') 00 t: ..-4 ~ co- ~ E ø:;c. c.. ~-" ~ 4,J ~ '-= LOG OF TEST HOLE ~ tn.5.-4 t:.-4 Q) Q 0 0 In .-4,.... ~In~ II! ""' ... II! -4 ~ ~ II! oo't) o !1 0 ~""'¡o~EE c.c. >'g,c..c.. :t:'!XI 4,600 170 380 365 35 - * 500+ - . . -. -.. '- .. eo. · - 40 · ..... * T.D. - 40' . @ 177 * * 170 * 365 @ 250 * 475 w. H. PARK AND ASSOCIATES LOCATION: Bakersfield Homeless Shelter TEST HOLE IDENTIFICATION: T.R. No. 1 DATE DRILLED: 07/13/88 ELEVATION: 415± I RIG TYPE: 6" Hollow Stem Flight Auger Lithologic Description Silt, brown, sandy, fine to very coarse grained, poorly indurated, strong odor, Sand, tan, silty, very fine to very coarse grained, loose, strong odor. Moist, strong odor. Silt, light brown, poorly indurated, strong odor. Sand, tan, very fine to very coarse grained, loose, strong odor, Silt, brown, sandy, fine to very coarse grained, gravel common, poorly indurated, strong odor. Silt, brown, poorly indurated, strong odor. Silt, brown, sandYi fine to very coarse grained, gravel rare, poorly indurated, strong odor, * - Sample Location @ - Sample Analyzed '1 i~ '. LOG Q,I \/I tIC 1/1.5.-4 C 0 ..c '0"4 Q) g.-4 Q) ...c 4J "'0 tlCC 0. III - .-4.-4.c.~~ 0 3 Q) Q,I E 111..-1 '" III ...c .-4 Q -c:; 0. 4J ¿. III þ "'0 0..-1 Q) 0. o I'd u ..c 0 '"' -' E-4~OEE 4JU ~ Q,I 0,",0.0. '0"4 0. 4J :>~o.o. ,...:¡ E Q) :x:' rxr III ::t: tI) 0 - , . , . - - , - , 5 - - - , - , - . . 10 · - , - · - - . · 15 - , - ',. · .., - . OJ ,.... . . ' OJ -, . . þ .. 44 - 20 - - ..c: - JJ ' . 0.. , OJ - · Q · - · 25 - , - , · , - · - · · . - . 30 - , · . , - . · . - .., - ", .' - 35 -', - - .", - e· . · . , - · 40 · e·'-.· T.D. - 85' OF TEST HOLE w. H. PARK AND ASSOCIATES LOCATION: Bakersfield Homeless Shelter TEST HOLE IDENTIFICATION: T.H. No. lA DATE DRILLED: 07/18/88 ELEVATION: 415±' RIG TYPE: 6" Hollow Stem Flight Auger Lithologic Description Silt, brown, sandy, fine to very coarse grained, poorly indurated, strong odor. Sand, tan, silty, very fine to very coarse grained, loose, strong odor. Moist, strong odor. Silt, light brown, poorly indurated, strong odor. Sand, tan, very fine to very coarse grained, loose, strong odor. .Silt, brown, sandy, fine to very coarse grained, gravel common, poorly indurated, strong odor. Silt, brown, poorly indurated, strong odor. Silt, brown, sandYi fine to very coarse grained, gravel rare, poorly indurated, strong odor. * - Sample Location @ - Sample Analyzed Sheet 1 of 3 ~.. 40 45- 50- 55- +J _ -, (l) (l) _ 44 . - o ~ cot: ~ 3 O..-f .c 0 4-JU .... ~ . . - " . - . þ - '" .. .@ o " - . - - . .. - . . . - - . ' , - . - . 60- - - ..c: +J - . P.. (l) - . . . o . - 65- D . , - · - " - · ,. · . - · 70 - . , - , · .' , - . - .. . D , 75 - , . - . , - - - 80 , " , , . . · . . " · , . · · " . , · , ~ I/) .c: 4-J 0. Q) Q Q) ..-f 0. E co tI) co c: .... ~ co - Q) E ø::o. 0. ~-" Q) 4-J Q) ::L: 500+ * 500+ * 500+ @ 500+ * 500+ * 220 * 495 T.D. - 85' LOG OF TEST HOLE Q) I/)~~ c ~ Q) Q) 001/) ..-f..-f~I/)Q) co...4coco.... 4-JJ.,Joco~ o co ~..-4~EE o~ 0.0. ::> >- 0. C. :t:' rxr 12,000 400 w. H. PARK AND ASSOCIATES LOCATION: Bakersfield Homeless Shelter TEST HOLE IDENTIFICATION: T.H, No. 1A DATE DRILLED: 07/18/88 ELEVATION: 415±' RIG TYPE: 6" Hollow Stem Flight Auger Lithologic Description Sand, tan, fine to very coarse grained, gravel rare to common, poorly indurated, strong odor. Gravel rare, strong odor. Sand, reddish-brown, silty, fine to coarse grained, gravel rare, poorly indurated, strong odor, No sample - drilled past. Sand, tan, silty, very fine to very coarse grained, gravel common, loose, strong odor. Strong odor. Silt, brown, sandy, fine to coarse grained, poorly indurated, odor. Sand, tan, silty, fine to medium grained, loose, strong odor, * - Sample Location @ - Sample Analyzed Sheet 2 of 3 Attachment D .,a LOG OF TEST HOLE ..c oW 0.. <lJ o II w. H. PARK AND ASSOCIATES 00 f .s~ (I) c u .c """ c:.... II .~ ~ '0 CIJ 00(1) LOCATION: Bakersfield Homeless Shelter oct: c. 10- ~~.DVlII ~ 3 Q) Q) e "',"~fa-4 TEST HOLE IDENTIFICATION: T.H. No. 1A Q C::Co ~ ~ fa 00"0 co U o~ II Co ~~OeE DATE DRILLED: 07/18/88 ELEVATION: 41S±' .c 0 ~ ...... ~ Q) o~c.c. ~u c. RIG TYPE: 6" Hollow Stem Fliqht Auqer .... ~ >~ø.c. ~ E Q) ~: rxr ca tI) :t: Lithologic Description . . - . - . - . . . - . - 0, Very fine to grained, gravel very coarse o . . . @ 500+ 510 common, strong odor. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 80 85 oW <lJ <lJ I+-; T.D. - 85' * - Sample Location @ - Sample Analyzed Sheet 3 of 3 Attachment D " .J~ .... Laboratory No. 1564 through 1578 Project: Future Homeless Shelter RESULTS OF ANALYSIS i1569 ID: T,H, ~4-10' Benzene l, Toluene Ethylbenzene p, m-X~'l ene o-Xylene Isopropylbenzene TVH TPH (Not Diesel) ~1570 ID: T,H, ~4-25' Benzene Toluene Eth~dbenzene p,m-Xylene o-Xylene Iscpropylbenzene TVH TPH (Not Diesel) ~1571 ID: T,H, #4-301 Benzene TPH (Dies¡d) =1572 ID: T.E, =-4-40' Benzene TPH (Diesel) ugm/gm r-IRL, ugm/ gm 0,73 0, ] 0,72 O. 1 0.92 0, ] Ii 0, 1 13 0, ] 2.5 0, 1 350 1 .0 1,200 50 ugm/gm NRL,ugm/gm 110 0, 1 510 0, : 450 0,1 2,000 0, ] 1,3()0 () , 1 250 O. 1 17,000 1 ,0 41 000 50 ugm/gm :'1RL ,llgm/ gm ~D 0, 1 ?\D 50 ugm/gm :-JRL, ugm/ giii ~D O. 1 ~m 50 ~lethod of Analysis: California DOBS LUFT manual NRL = ~Iini¡TI\.:m Reporting Level TVH = Total Volatile Hydrocarbons TPH = Total Petroleum Hydrocarbons ugm/gm = microgram per gram ND = Not detected S~ ~J) St.an Comer Attachment E -. Laboratory No. 1564 through 1578 Project: Future Homeless Shelter RESULTS OF ANALYSIS =1573 TD: T.H. #5-15' Benzene TPII (Diesel) ugm/gm NRL,ugm/gm ND 0,1 KD 50 ugm/gm ~1RL, ugm/ gm ND 0,1 ~D 50 ugm/gm ~1RL , ugm/ gm ND 0.1 ND 50 ugm/gm NRL,ugm/gm ND 0,1 ND 50 ugm/gm ¡"JRr... , ugm/ gm KD 0,1 ND 50 ugm/gm ~mL , ugm/ gm \'D 0, 1 ?\D 50 #1574 ID: T.H, #5-30' Benzene TPH (Diesel) #1575 TD: T.H. #6-20' Benzene TPH (Diesel) #1576 ID: T,ll. #6-25' Benzene TPH (Diesel) ~1577 ID: T,IJ, ~6-30 Benzene TPH (Diesel) .::1578 ID: T,¡¡, ;6-35' Benzene TPH (Diesel) ~Iethod of .~nal~·sis: California DOBS LLTT manuAl NRL = Minimum Reporting Level TPH = Total Pet.roleum Hydrocarbons ugm/gm = microgr~m per gram N D = ;\ 0 t d_ e t:. e r. t e d s~o~ ,> " tJ ... ace: ~ 3 o~ .c 0 4JU ..-4 ~ o - - . - . - . - . IT) .c 4J Co ( ,) o ( ,) ~ Co E to tI) ac c: ... "C III- ( ,) E ~c.. Co ~..., ( ,) ..,¡ ( ,) ¿: 5 - * trace 10 - - .. - - .... @ - . ø . - . · D. - - 0 . . . , , . -. - . . , 15 _. '. * · - ~ - D_. QJ QJ ~ . - . , - 20- '. * 175 -- .c ~ -' .- a. QJ - Q - . 25 - ø 105 30 - 35 - 40 · - - - _ 0 ._ G 12 - - . , - -. . - ". . - . - -' , . . ø - - ' - . - , . , . . . * T.D. - 40' @ trace LOG OF TEST HOLE ( ,) IT).5~ EC:~( ,) ;:j 0 0 IT) ~( ,)~IJ ( ,) tO~lIItO... ..,¡ 0 tJ 013 "C o ¡., ~..,¡ ~ E E ( ,) "C c.. c.. ~>-c..c.. :I:' nx 25 1,200 lNot Diesel) 55 41 ,000 Not Diesel None Detected 18 None Detected w. H_ PARK AND ASSOCIATES LOCATION: Bakersfield Homeless Shelter ' TEST HOLE IDENTIFICATION: T.H. No. 4 DATE DRILLED: 07/19/88 ELEVATION: 415±' RIG TYPE: 6" Hollow Stem Fliqht Auqer Lithologic Description Silt, brown, sandy, fine to medium grained, gravel common, poorly indurated, moist, slight odor. Sand, tan, silty, very fine to very coarse grained, gravel common, loose, odor, Moist, strong odor. Silt, brown, sandy, fine to medium grained, poorly indurated, moist, strong odor, Silt, tan, sandy, fine to coarse grained, gravel rare, -poorly indurated, strong odor. -Odor, Sand, tan, silty, very fine to very coarse grained, gravel common, loose, odor. Silt, tan, sandy, very fine to very coarse qrained, poorlv indurated, sliqht odor, * - Sample Location o - Sample Analyzed Attachment F LOG OF TEST HOLE G) w. H. PARK AND ASSOCIATES I/) ÞO 1/).5...-4 C CJ .c ~ SC.-fG) '0"4 ~ "C 001/) LOCATION: Bakersfield Homeless ÞOC c. 10- ...-4G)-eI/)G) Shelter ~ 9 G) G) E 1O...-4101O~ TEST HOLE IDENTIFICATION: Q g::c. ~oCJÞO"O T.H. No. 5 0...-4 G) C. o ~ DATE DRILLED: 07/19/88 ELEVATION: 415±' .c 0 ...-4 ~-' E-<~~EE ~u c. G) Q) "0 C. c. RIG TYPE: 6" Hollow Stem Fliqht Auqer '0"4 e ~ Po.:>-.c.c. .;¡ 10 G) :x=' nx t/) %: Lithologic Description 0 . - - . , , . - . . . Silt, brown, sandy, very fine to very . : 5 - · * 0 coarse grained, poorly indurated, moist, " · . no odor. - . - ' · , , - . , . . . Sand, tan, silty, fine to very coarse 10 . * 0 grained, gravel loose, moist, - . rare, o . no odor. - . , . - , .' - - o . 15 - @ 0 None No odor, , . ' - Detected - .. . - oW - .. ' Q) . " Q) - 4-4 , 20 -. - , ..c -. oW 0.. - Q) 0 , - 25 - - - - - 30 - - - - 35 - - - - - 40 * Silt, brown, sandy, very fine to very coarse grained, poorly indurated, no odor. , o , , * No oåor. trace @ trace None Detected No odor, T.D. - 30' * - Sample Location @ - Sample Analyzed Attachment_ F ': ~ o o '... tlCC ~ § 0...-4 ..c 0 ~u .,..¡ ~ - . - - . 5- - - -. - '. , , . - ' 10 - '. .. * , 15 - +J _ . Q) Q) -. '. ~ - 20 - - .c +J - p., Q) - Q 25 - - . 0 - " - þ - " _ .. - - - . . . . , . . , . . . . , . , , - 30 _ . 0 - @ - 35 - 40 - .- - - . - . ~ _ 0 - . , - . c . . . . - . . . , . . .. If) .c ~ 0. IV Q IV ...... 0. E CC tI) 00 c: '... "é cc- IV E cx;o. 0. ~ --- IV .o.J IV :t: * trace * @ @ @ trace * T,D. - 40' LOG OF TEST HOLE IV If)~.- e C...-4 IV :; 0 0 If) ......IV~If)IV CC...-4cccc.... .o.J 0 U 00"é o ~ r-<.o.J~ee IV "C 0. 0. p., >. 0. 0. :I:' nx o o o None Detected 48 None Detected 5 None Detected None Detected o w. H. PARK AND ASSOCIATES LOCATION:Bakersfield Homeless Shelter TEST HOLE IDENTIFICATION: T.H. No. 6 DATE DRILLED: 07/19/88 ELEVATION: 415±' RIG TYPE: 6" Hollow Stem Fliqht Auger Lithologic Description Silt, dark brown, sandy, fine to coarse grained, poorly indurated, moist, no odor. Sand, tan, silty, very fine to very coarse grained, gravel common, loose, moist, no odor. - No gravel, no odor, Silt, greenish-brown, sandy, fine to coarse grained, poorly indurated, no odor, Silt, tan, sandy, fine to very coarse grained, gravel common, poorly indurated, odor, 'Slight odor. No odor. No odor, ~ - Sample Location @ - Sample Analyzed '0 ': '> CROSS SECT/ON SITE No, 2 SOVT" ,., GROUND SURFACE i.H. No.4 T.H. No.6 NeaT ,{ f--~- -------, I 5' r.....c.. I rICAC.~ I I S50 GAL. IAN J< I l- I I II:: L_ ______ __y:\. __J () ~ III C( q¡ 1,200 2!r « 10 ' .J I ;¡:" ~;. ~' I- ';_-i. t::) lie j'# ..'òI.''''' Q ~:*;!' 4J II. -:<:,. d" ..... III ':f~ ~ Q:. 5S 0 t IS' <{ t ~ / .~~1 . ~ :< 0( '"~ -.J ~ ~ Iu ~ ::t ~ .f;r - "'~ <: I- ~ ¡... ~ cr ... , C<. / ..'..... '" \ ¡ ~ III Q ~ II. t ~ t : III .': C\ ::i Q:: n: < ~ /75 0 20' I 0 I-: '-J t C<. I Q.. I N.D_ 25' \ \ N.D. /2 N.D. S 30' CON/AMINATED / \ SLIGHTL y \ AR EA / . IS / N.D. TIlAC.Ir 35' " /- " ,/ ............ N.D. r itA&. £ 0 40' T. D. ~+o' í. D. = +0 ' APPRO'/{. OUT"~/NE BAC.KF/~L 5 C A L £': / 'I = 5 ' W. H. PARK AND ASSOC-IATE'S AU6uST 1988 ATTAGJ-/M£NT G .( '. ARE.AL £><TENï OF COWTAMINAT/ON Aí 20 FOOï ÐEPTJ-{ 51TE No, 2 ~ ï:H. No. ~ ,,-S-... ".". ~" , '" / " / ~ ~ ... f. _~~~;...._c "-:, " ' ..... .... ~- . :'1.:, /'~=':-=~t.~" ~\ "I' I 1'~ ~ 1ij I ,:.: {to- 1 ,,:?:).O , < I I '.,- ..11.0 ~I :-r.}i No.4: I;~ ~~ I ~I I S I ,:\Q ~<: 1 < I I ex -- \ \-- I I < r ~~ 1 < I - '-JI< 01 :Z-TANKz...1 ,. ¡... \ U~ ,< I ...____.J 0 8ACKF/L:: J . u \ --~ / " / ............ -- - .-'" -r.)./. No.5 S ~ SC.AL£: I":: S' W. H. PAR.K ANt> Assoc. -AUGUST /9SS ^~-rA""'"A'-''''''' II :f,..... ..... STANDARD INSURANCE LANGUAGE SP7.2Bl Co~tr~ctors Pro~idi~g Professio~al Ser~ices The contractor shall save, hold harmless and indemnify the City, it officers, agents, employees and volunteers from all claims, demands, damages, judgment, costs or expenses in law or equi ty that may at any time arise from or related to any work performed by the Contractor. his agents, employees or subcontractors under the terms of this agreement, INSURANCE In addition to any other form of insurance or bond required under the terms of this agreement and specifications, the Contractor shall procure and maintain for the duration of this agreement the following types and limits of insurance: Professional liability insurance, providing coverage on an occurrence basis for bodily injury, including death, of one or more persons. property damage and personal injury, with limits of not less than one million ($1,000,000) per occurrence; and Automobile liability insurance, providing coverage on an occurrence basis for bodily injury, including death, of one or more persons, property damage and personal injury, with limits of not less than one million ($1,000,000) per occurrence; and General liabili ty insurance, providing coverage on an occurrence basis for bodily injury, including death, of one or more person. property damage and personal injury, with limits of not less than one million ($1,000,000) per occurrence, Workers' compensation with statutory limits and employer's 1 iabi 1 i ty insurance as respects the Ci ty, its mayor, council, officers. agents, employees and volunteers and any insurance of self-insurance maintained by the Ci ty, its mayor, council officers. agents. employees and volunteers shall be excess of the Contractor's insurance and shall not contribute with it. The automobile liability policies shall provide coverage for owned, non-owned and hired autos. The liabili ty policies shall provide liability coverage for the terms of this agreement, contractual "'.J A--¡,. Page 2 Standard Insurance Language The liability policies shall contain an additional insured endorsement in favor of the City, its mayor, council, officers. agents, employees and volunteers: The workers' compensation policy shall contain a waiver of subrogation endorsement in favor of the Ci ty, its mayor, council, officers, agents, employees and volunteers. All policies shall contain the following endorsements: An endorsement providing the City with ten written notice of càncellation or material change language or terms. ( 10) days ln pol icy If any part of the work under this agreement is sublet similar insurance shall be provided by or on behalf of the subcontractors to cover their operations. The insurance required under this agreement shall be maintained until all work required to be performed under the terms of this agreement is satisfactorily completed as evidenced by formal acceptance by the City, The contractor shall furnish the City Risk Manager and the Public Works Department with a certificate of insurance evidencing the insurance required under this agreement. All costs of insurance required under this agreement shall be included in the Contractor J s bid, and no addi tional allowance will be made for additional costs which may be required by extension of the insurance policies, FIGURE 4 f 1/' l CITY of BAKERSFIELD \.- "WE CARE" FIRE DEPARTMENT D S, NEEDHAM FIRE CHIEF January 30, 1989 2101 H STREET BAKERSFIELD, 93301 . 326-3911 William Scheide Kern County Health Dept, 2700 H Street Bakersfield, Ca. 93301 [ÆŒ©~UI\?Œ[Q) JAN 3 t 1969 .. ENVIRONMENTAL H¡;:~LT"! Dear Bill: The proposed site of the homeless shelter, located at 1600 East Truxtun Avenue, contained underground fuel storage tanks at two separate locations on the property. Soil samples after removal of those tanks indicated soil contamination at both locations and necessitated a full site characterization study of each area, Enclosed please find the initial site characterization completed by ï~illiam H. Parks, for George M, Sweet Co, as well as the subsequent site characterization for Site 1, completed by Geosystems Consultants, Inc, The original project completed by William H, Parks addressed both areas - Site 1 - located at the North West corner of the property near the existing building at 1530 East Truxtun Avenue, and - Site 2 - located just east of a shed that has subsequently been removed, Site 1 contained two underground storage tanks used for gasoline, The initial testing found contaminated soil to a depth of 85 feet and was unable to fully characterize this area because of equiìJment Limitations, The second site characterization study was completed by Geosystem Incorporat~d on Site 1 in order to complete the evaluation, Site 2 contained one 550 gallon diesel tank and was fully characterized in the original evaluation by Parks, The full extent of h~drocarbon contamination at this site, both the vertical and horizontal extent of the plume as well as the lithology of the soils show this plume to be stable and of no threat to groundwater. However, due to the concentration of hydrocarbons present as well as the sensitive end use of the property, a full mitigation of the contamination at site 2 is proposed. '~e have considered soil removal and disposal at a hazardous materials land fill as well as bio remediation "in-situ" as well as on site farming. We find the soil removal method to be the least desirable method from both a cost as ~,¡ell as the "cradle to grave" aspect of hazardous waste disposal in a landfill, We do propose therefore, to mitigate the soil contamination at Site 2 thru a bio remedial process, The on site versus in-situ remediation to be determined thru the recommendations of the various engineering firms that ~,¡ill be requested to submit a proposal on this site, "'.~~ š, Page :2 Homeless Shelter The site characterization study completed by Geosystem Consultants Inc. addresses the larger of the contaminated soil plumes - Site 1 -. The areal and vertical extent of the contaminated soils at Site 1 as well as the lithology and volatile nature of the contaminants, lend itself to in-situ vacuum extraction. We do propose to specify in-situ ventilation or vacuum extraction for the mitigation of contaminated soils at Site 1, We plan to send requests for Proposal to mitigate the soil contamination at both Site 1 and Site 2 to qualified engineering companies as soon as possible, in order to get this cleanup project under way. Please review these reports and make any comments or suggestions by Friday February 10, ~s you know the political sensitivity of the homeless shelter as ¡;ell as the media focus on this project make it imperative that we proceed in the best manner possible and with haste. We feel, now that the full extent of the contamination has been determined and the decision on remedial alternatives made, that construction on this site could resume. We would plan to work around any and all affected areas until mitigation is completed and a clean bill of health received. However, we tJould like your concurrence that construction of the site ~an continue. I do look forward to your agreement and comments at your earliest convenience. Sincerel:-c Yours, ~,'~. - /' .!! c;:- . ' - 'J c: .- ./ fL.' 0 t~/ é ej /--- l~ '-' ~~ / Ra 'ph E ,~-y-~ / I' , ~ 'I t . 1 / _lazaraOLlS :' a erla s , Coordinator I I REH:vp f.\'CLCSURES f. ,CITY of BAKERSFIELD "WE CARE" FIRE DEPARTMENT D S. NEEDHAM FIRE CHIEF 2101 H STREET BAKERSFILED. 93301 326-3911 OCTOBER 13, 1988 WILLIAM SCHEIDE KERN COUNTY HEALTH DEPT. 1415 TRUXTUN AVE. BAKERSFIELD, CA 93301 DEAR BILL: ENCLOSED PLEASE FIND THE PROPOSAL FROM GEOSYSTEMS FOR THE 'PROPOSED" FUTURE HOMELESS SHELTER SITE AT 1600 E. TRUXTUN AVE, GEOSYSTEMS PROPOSAL HAS BEEN THE ONE SELECTED BY PENNZOIL, AS WELL AS, THE CITY OF BAKERSFIELD FOR THE SITE CHARACTERIZATION PLAN FOR SITE 1 ON THIS PROPERTY. IF YOU HAVE ANY COMMENTS, REQUESTS OR NEED FOR ADDITIONAL INFORMATION PLEASE CONTACT ME DIRECTLY, THE CONTRACT HAS NOT BEEN OFFICIALLY CONSUMATED, BUT WE WOULD BE READY TO SIGN BY THURSDAY, OCTOBER 20, 1988, BILL. IF WE HAVE NOT HEARD FROM YOU BY WEDNESDAY, OCTOBER 19, 1988 WE WILL ASSUME THE PROPOSAL LOOKS GOOD AS IS AND IS ACCEPTABLE TO THE KERN COUNTY HEALTH DEPARTMENT, .///r SINCERELY, ~ . ,/i /,/ J.' /1 C:-r-,/'" ... ", /'é~llû/ - I'~:"'~- /. -- '/ ç \ .,./ RALPH E, HUEY .) ( ! HAZARDOUS MATERIALS COORDINATOR REH/ED 20CT13.DOC ';:', @~(Q)~W~l[~~~ CONSULTANTS, INC. 'l -- September 13, 1988 project No. 88-250PR Mr. George Gonzales Community Development Coordinator CITY OF BAKERSFIELD 1501 Truxton Avenue Bakersfield, California 93301 '. 'r ProDosal site Characterization and Remedial Alternatives DeveloDment Future Homeless Shelter ProDerty Bakersfield. California Dear Mr. Gonzales: Pursuant to the Request for Proposal (RFP) dated August 31, 1988, Geosystem Consultants, Inc. (Geosystem) is pleased to submit this proposal to the City of Bakersfield (the City) for site charac- ._, terization and remedial alternatives development. The proposed ~) ~scope of work pertains to a portion of the future homeless "v ...,...-~. shelter property located at 1600 Truxton Avenue in Bakersfield, ~,~~ California. The site location is shown in Figure 1, and a plan c:1 " I""" /U of the property is shown in Figure 2. As presented in Figure 2, ~c a number of buildings (1530, 1600, 1610 Truxton Avenue) exist at the property, but for the purpose of this investigation, the property has been divided into Sites 1 and 2. The scope of work proposed herein pertains only to site 1. As shown in Figure 2, Site 1 is located at the northwest corner of the property and includes the large metal building, referred to as 1530 East Truxton Avenue. Former motor vehicle fueling facilities at site 1 included two 1,000-gallon gasoline tanks and a dispensing island. The area immediately surrounding the dispenser island and the underground storage tanks is of concern in this project. BACKGROUND On May 26, 1988, Apex Environmental removed the two tanks from Site 1. Total petroleum hydrocarbon (TPH) concentrations in soil samples collected at 2 and 6 feet below grade ranged from 800 to 7,000 ppm. In July 1988, test holes TH No.1 and TH No. ~ were drilled to depths of 45 and 85 feet, respectively. The locations of these borings are shown in Figure 2. Chemical analyses of J 18218 McDurmott East. Suite G · Irvine. California 92714 Telephone (714) 553-8757 · FAX (714) 261-8550 ~ ) ) " September 13, 1988 Mr. George Gonzales Page 2 soil samples collected from these test holes have shown the presence of TPH and aromatic hydrocarbons to the maximum depth investigated. Although the data indicate that TPH concentrations decrease with depth, the presence of hydrocarbons at 85 feet below grade has raised concern over the vertical extent of these compounds. The scope of work requested by the City is intended to address this concern and to formulate the most appropriate remed~~l alternative for hydrocarbon-containing soil. OBJECTIVE The overall objective of the proposed scope of work is to further characterize the areal and vertical extent of soil contamination beneath Site 1 and to develop the most appropriate remedial alternatives considering site-specific conditions. SCOPE OF WORK The proposed scope of work is in strict accordance wi th the stated objectives and requirements of the RFP. The scope of work includes drilling/soil sampling, chemical analyses, data evaluation, development of remedial alternatives, and reporting. A brief description of each task is presented below. Drillina and Soil Samclina (Task 1) As requested in the RFP, three borings (Borings B-2, B-3, and B-4) will be drilled at the approximate locations shown in Figure 2. Boring B-2, which is located between previously drilled test holes TH No. 1 and TH No. ~, will be drilled beyond the presently known depth of contamination to a maximum depth of 150 feet, if necessary. Borings B-3 and B-4 are expected to be shallower and intended primarily to delineate the areal extent of contamination. For the purpose of this proposal, a maximum depth of 60 feet has been assumed for Borings B-3 and B-4. The exact locations of Borings B-2, B-3, and B-4 will be determined after a site visit, discussions with the-City personnel, and considering the locations of overhead and underground utilities. Drilling will be performed using a hollow-stem auger drilling rig capable of penetrating to the desired depth. Soil samples for chemical analyses will be collected at 5, 10, and subsequent 10-foot intervals to a depth of 40 feet and at 20-foot intervals 1J Ie Û (ê'> '017 ~ c:::¡¡=' rc::' r;ì '-;'1 \~~\'0@ ü ¿:;¿) u Ic.jtu '1' ) ) ~ September 13, 1988 Mr. George Gonzales Page 3 thereafter . Additional soil samples may also be collected at intermediate depths at the discretion of the supervising engineer or geologist. Soil samples_will be screened in the field, using a photo~oniza-' tion detector (PIC), to qualitatively evaluate the presence of volatile hydrocarbons. The borings will be terminated at about 5 fea~be10w non-detected PID reading, and a soil sample will be collected from the bottom of each boring. Soil sampling, decontamination, and health and safety procedures will be according to generally accepted, standard practices. Phvsical Testina and Chemical Analvses (Task 2) A maximum of six soil samples from representative strata,~ill b& tested to determine grain size distribution, moisture content, bulk density, and porosity. Selected soil samples will be shipped to the analytical labo~atory and analyzed for TPH using u.S. Environmental Protection Agency (EPA) Method 418.1( and for benzene, ethyl, benzene, toluene, and xylenes (BETX)' using EPA Method 8020. Chemical analyses will be performed by West Coast Analytical Laboratory (WCAS) of Santa Fe Springs, California. WCAS is certified by the State of California, Department of Heal th Services, and participates in the EPA I S Contract Laboratory Program. In addition, WCAS is accredited by the American Industrial Hygiene Association. Data Evaluation (Task 3) Based on the data generated during this investigation and those obtained earlier, the areal and vertical extent of TPH and BETX will be assessed. The evaluation will also include review of hydrogeologic conditions based on site-specific information and regional data. Evaluation of potential contaminant migration pathways will be performed as a basis for the development of remedial alternatives. Develonment of Remedial Alternatives (Task 4) Available soil quality and hydrogeologic information will be used as a basis for screening and developing remedial alternatives most applicable to the site conditions. Consistent with existing regulatory guidelines, a "no action" alternative will be included in the overall evaluation. Considering technical feasibility, ~ rc: V CC? W ~ 'IF ~ r.\ :~ \8] lS (\'0~) )J ǧ) U I ~ J\~:J i' " September 13, 1988 ..- i Mr. George Gonzales Page 4 ) ./ ) environmental acceptability, and cost, the most appropriate remedial alternative will be selected for consideration by the city. The selection will consider existing contaminant levels, potential receptors, and pertinent regulatory and guidance documents. The rationale for the selected alternative will also be provided. Report~a (Task 5) On completion of data evaluation and development of remedial al ternati ves, a draft report will be prepared and submitted to the City for review. The final report will be prepared subsequent to receipt and consideration of any review comments. The report will be signed by an appropriately registered engineer or geologist and will include the following elements: o Introduction - Objective - Technical approach o Field activities o Hydrogeologic setting o Areal and vertical extent of hydrocarbons o Migration pathway evaluation o Development of remedial alternatives o Findings and recommendations. SCHEDULE AND COST " The project will commence within ten days of receipt of authorization to proceed. A draft report will be submi tted to the City within 30 days of completion of the field activities. The final report will be issued one to two weeks after receipt of review comments from the City, depending on the nature and extent of the comments. The total cost to perform the proposed scope of work, as described in this proposal, is estimated to be $17,510. The estimated cost ~s based on a total of 320 linear feet of drilling. The drilling time is assumed to be 2.5 days. The cost breakdown for various tasks is presented in Table 1. This cost has been estimated on a time and materials basis using the unit rates shown in Table 2. For the purposes of this proposal, however, the cost may be considered a "lump sum" or fixed fee bid for the defined scope of work. ~FÛ~M~¥rc:\'¡l ~ L-\:d)~ U ~ U 1C.·J"~'ê ,. '-, ì ) ) '~ September 13, 1988 Mr. George Gonzales Page 5 CONCLUDING REMARKS Geosystem has extensive experience in subsurface investigations, development of remedial alternatives, and negotiation with the regulatory agencies. A Statement of Qualifications (soQ), summarizing Geosystem's general areas of practice, key personnel, and pertinent proj ect experience, is enclosed for your review. We l09~ forward to working with the City of Bakersfield and other potent~al responsible parties on this. project. If you have any questions or require further information, please do not hesitate to call Mr. Philip Miller. Respectfully submitted, G~X;ZANTS, INC. Mohsen Mehran, Ph.D. Principal MM: sh Attachments @~(Q)~~f~u~~~ " \ TABLE 1 COST ESTIMATE 1AU. Drilling and Soil Sa~ling (Task 1) -\ o Drilling Subcontractor o Field Equipment o Mobilization, Travel, and Expenses o Supervision Phyaical Teating and Che.ical Analys.a (Taak 2) o Phyaical Teating o Ch..ical Analyses Data Evaluation (Task 3) ) Development of Remedial Alternatives (Task 4) Reporting (Task 5) TOTAL ESTIMATED COST ESTIMATED COST (S) 4,500 960 610 1,900 1 , 400 5,320 760 860 1,200 S17,510 ~í£(())@\v;7@lf'l' ~\-;¡ " -'\ PROFESSIONAL SERVICES AND SUPPORT Principal Project Manager '. -1aroject Consul tant Senior Project Engineer/Geologist Project Engineer/Geologist Staff Engineer/Geologist Technician Drafting Word Processing Clerical ) EQUIPMENT CHARGES AND EXPENSES Truck Subsistence Travel, Accommodation, and Other Expenses Subcontracted Services Computer Time Field Equipment ) TABLE 2 SCHEDULE OF CHARGES HOURLY RATE S 95.00 85.00 75 ,00 70.00 60.00 50.00 40.00 45.00 40.00 30.00 'S30/dav + SO.25/.i le S24/night/person Cost + 15 percent Cost + 15 percent S15/hour Rates available upon request @~©~w~u~~~ 'i' ~ . ) "0378 . ~. j!'\~~nLJ ICJg";il' :, 'II "¡IU' 1111 II II ¡;k'~ -,\~ì:', \~.,"'~~~, , I ~ /~~. 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I /1/11 ~=~III~I'I- I I~I~ ,,~ ~II· I J-- ~Ilr ~ 1_ V ¡ ¡ ~W ¡ ~ ~ IIJ~r.\ _II ·~~t~!: ' '-. '~R' I J'.! :: U~ II II II _.j., -'~==~ ~I ....'" ~U ~::;"I II ,:~~¡" ;. ~1'~l'ï {,.,. __BRUNe'e' __ ~~'B''':..." I '::=:J WU ø:;I?~r::. 3BB:' . ~B5 I~ -.......... L--..J '-, I 1# . éJ Sewa8e ....... ~! I ll~), ,..._:Q-%,_,/',: ~ - 1111 Ii Æ - :Oisoosal " ....... =-= _" - ,,:,,/ (I II / Ir=- I~. r--~f;;:;o __ SewI8e '-." .....,.... .-.......;.- p ·.l ~~ ¡i ,...'.."".......t % FIGURE 1 SCALE SITE LOCATION MAP QUADRANGLE LOCATION , o FUTURE HOMELESS SHELTER PROPERTY CITY OF BAKERSFIELD BAKERSFIELD. CALIFORNIA : 4000 FT 2000 REFERENCE U.S.G.S. 1.5 MINUTE SER I ES (TOPOGRAPHIC) OIL CENTER AND LAMONT QUADRANGLES, DATED 1954, PHOTO REVISED 1968. SCALE = I: 24,000. @~(Q)~W~ü~U¥U í t .. . . t~ !, ~E ,. .- ¡ .... ~~ >- i$ ~ t , II .. r- IL f SOÚl¡¡ E/ N P r-- -iC/FIC ~__ 1t"'iItO" -__ . 0 I 61lE' ~---:::::,... t--- .--- INSET A i '" ii,' ,.. -__ '. " '."..- --- ---,,__n ~ -~I-. _-.... I . Otm~I~~ 1'·...-¡ -, '............. J I . - I=.UU....P!¡.~. \-...._-.... I J "WfA,I.0"T;' '-.... ~cE1 :i~:'~ IIU. '¡:~.'.'~.~.i..b. '__', ~ ¡.; ~¡ .., i f-q I· ~. I 'i' .~::~~~¡~ ::~nii:i~r IIT£I WETAL IIUILDING )Þ. ------ ------ \ L_,_,-, r-- I I I I I I I I I , , I I I I I I , , I I I , SCALf r - 1 ~ ~ IOfHT f:~:E --COI/£ IILOex .: . . , ; .. , n...r. Offlct \IUILIJI/l1I WAU-:¡r_j I j,~ ;,j I';:; ¡, .:; : : 'I' I . : . . . i·;, ¡;;.; ; I . ~ . L'·: ;:~'::LL·:" rL.: :.. ,.; L:"" ~::"";':"': ~ ~;....:- _ L- - - -- 1600£ TRUll TON AV£. '6Iotï¡uiiToiuv£~jf~AjcI\"11,yfl1i.'lJ!L .- - - -- A-.-~-rl-~-.-f œ 11-) ~ 1N-N.. I œ 11-2 i j ,!!! ~I to õ ~ 111- N. II. lINSET'A' . ç gg1i!L . ..- PowfR LINf5.--- . .. (oGt or ROAD~"- _-fAClfIC IIU_L .,I./I/lOU t9 ED SOIL bORING LOCA11011 PROP05tD SOIL bORING LOCA TlOII "--£ EAST TRUXTUN AVENUE C3 EXISTING IIUILDIIIG EIOSTlNG CURII5 ANO GUTTERS ~ )) SITE PLAN ( fiGURE 2 ~~ ~/:J -lq: it; fUTURE ttOMELEIiS SHfL If.. PRO/'Ii/iH CUY Of IIAI<ER$fltID IIAkEII:>fILLU, CALli 011111 A StALE I o 1 100 fEET 00 @~«J)~W~ìf~1&1I ------~-- -----~- ., -: \ ED 11-4 I I I : I '. ;1 .: :-: -, Î II I d ~ ; I i '11 ;- \.. 1. : I q : I : . I I I -- · .' Statement of Qualifications - ENVIRONMENTAL MANAGEMENT I AND GROUND WATER RESOURCES @~(Q)~W~1~ù~'~' i' @~(Q)~W~u ~~~~ CONSULTANTS, INC. ~ I í j STATEMENT OF QUALIFICATIONS ENVIRONMENTAL MANAGEMENT AND GROUND WATER RESOURCES j 1 l l Geosystem Consultants, Inc. (Geosystem) is a professional consulting firm providing comprehensive, engineering services related to environmental management and ground water resources. Geosystem is capable of handling proj ects ranging from routine environmental auditing and preliminary site characterizations to '. ~ the design and implementation ofmul tidisciplinary remediation programs. -1 ! -, ¡ I j Geosystem I s philosophy is to provide prompt and professional engineering solutions through experienced staff. The company strives to achieve economically feasible and environmentally acceptaDle management strategies that reflect the client's_ budgetary and operational constraints. Geosystem I s principal clients include the chemical, petroleum, utilities, electronic, manufacturing, and wood preserving industries, commercial property developers, and government agencies. J ] 1 AREAS OF PRACTICE l Geosystem's principal areas of practice, related to environmental management and ground water resources, include: o Site characterization. J ] J J J I ! o Ground water and solute transport modeling. o Evaluation, design, remedial programs. and implementation of o Compliance with underground storage tank regula- tions. o Environmental permitting. o Waste classification. 18218 McDurmott East. Suite G · Irvine. Califomia 92714 Telephone (71.1) 553-8757 · FAX (714) 261-8550 " o Health and environmental risk assessment. -- o Independent review and auditing. 1 1 1 J ] . ] 1 I Geosystem's staff has extensive experience in applying the principles of their respective disciplines to the solution of practical problems. Geosystem keeps abreast of changing regulations and rapidly advancing technologies so that the most appropriate and cost-effective methods may be applied to waste management problems. '. ~ SITE CHARACTERIZATION Geosystem is experienced in site characterization studies to evaluate ground water resources and assess the extent, severity, and potential environmental exposure of hazardous wastes in the surface and subsurface environments. Such investigations are typically performed for operations that store or handle hazardous chemicals, water supply projects, baseline environmental studies prior to site development, and real estate transactions. site characterization studies have been designed according to the U.S. EPA I S formal investigative procedures. Geosystem is currently conducting several EPA-mandated Remedial Investigation/ Feasibility Studies in strict compliance with EPA requirements. 1 1 Comprehensive site characterization frequently requires a multi- disciplinary approach. Individual components of a typical site characterization may include: o compilation and review of available background information. o Geologic and hydrologic studies. o Design and installation of ground water and vadose zone monitoring systems. o Collection and chemical analyses of soil, surface water, and ground water samples. 2 ~ is 1Y rC:? \\/7 @ Sf ¡ç; 87ì \SJI~\SJ~ U \';?) L ~~\.:. ~ .' -. I j ¡ .., I I Geologic and hydrologic studies are usually conducted to characterize subsurface conditions such as stratigraphy, ground water occurrence, and ground water quality. Initial studies include review of available regional, local, and site-specific data to identify data deficiencies and plan field investigations. The data generated by the sit~-specific field investigations are utilized to evaluate the ground water flow regime and possible contaminant migration pathways. l The design of ground water and vadose zone monitoring systems reflec~s the site characterization objectives and is based on si te-specific hydrogeology. Geosystem IS, field personnel have installed hundreds of wells, ranging from shallow vadose zone monitoring wells to deep water supply wells. .... 1 ¡ .J The collection of representative samples of soil, surface water, and ground water during site characterization studies is critical to effective waste management and evaluation. Geosystem personnel have developed site-specific sampling procedures and implemented regulatory agency protocols for inorganic and organic compounds in soil, water, and waste media. Laboratory and field tests are frequently required to assess the geotechnical and hydrogeologic properties of soil and rock formations and help interpret the ground water flow regime. The data derived from these tests are used as input parameters for ground water and solute transport mOdeling. "1 J J 1 l I -1 ! ) GROUND WATER AND SOLUTE TRANSPORT MODELING Ground water and solute transport modeling is used by Geosystem personnel as a practical means of understanding and predicting the ground water flow regime and migration pathways under given management alternatives. Geosystem is equipped with a variety of computer programs which have. been successfully used to direct field investigations, predict the fate and migration of chemicals, evaluate remedial action alternatives, and respond to J J j 3 J . . @~(Q)~W§uLT~~ ~ ! j 1 il i ¡ I j 1 1 I j l J J 'J .' . regulatory agency concerns. Geosystem's staff has applied these models to numerous field-scale problems, particularly in predicting the fate of volatile organic compounds and metals under saturated and unsaturated flow conditions. Geosystem has also developed laboratory testing programs to evaluate the geochemical properties of various media, when knowledge of such properties has been essential for modeling purposes. Computer hardware available for computational purposes includes in~house microcomputers and access to VAX, CDC, and Honeywell systems. EVALUA~ON. DESIGN. AND IMPLEMENTATION OF REMEDIAL PROGRAMS Geosystem's staff has been actively engaged in the development of remedial action programs since the inception of the systematic approach promulgated by the regulatory agencies. Generally, viable remedial alternatives are evaluated by utilizing the data available from site characterization studies and other sources. Often, a feasibility study is performed to compare and select the most appropriate remedial action techniques. Geosystem1s approach to remedial action feasibility studies includes: o Initial screening of possible alternatives for soil and ground water remediation. o Selection of a limited number further evaluation based feasibility,' environmental approximate cost. of alternatives for on engineering improvements, and o Development of conceptual designs and cost estimates for the most appropriate alternatives. o Selection of the most appropriate alternative and evaluation of its environmental benefits. Typically, a detailed design of the most appropriate remedial action program is prepared for client and regulatory agency review and approval. Geosystem can provide all the resources necessary to complete the remedial action program, including environmental permitting, hydraulic structure and treatment unit installation, earthwork, and construction. 4 ~ r= (Q), ~. ~( ~ 1 rc 0'\:71 I _'L-..., I, '. ~,"\,' \\~;jI C. v ,- ~ I b ~\:.iJ -1 l l I i , ! I j -1 ¡ J j 1 l , l J J ] 1> Geosystem staff has designed, directed, and implemented numerous remedial action programs addressing soil and ground water contamination. Remedial actions related to soil have included excavation and off-site disposal, excavation with on-site aeration, and biodegradation. In-situ aeration techniques have also been applied successfully to remediate soils containing volatile organic compounds. Ground water contamination has been remediated by extraction and treatm\mt by air stripping, activated carbon adsorption, biodegradation, and electro-chemical techniques. In addition, containment of contaminated soil and ground water has been achieved by physical and hydraulic control measures including slurry walls and extraction/injection barriers. Additional information related to Geosystem' s experience in remediation is available upon request. Ground water remediation programs require periodic maintenance and frequent monitoring. Geosystem can provide a full complement of technical support services including ground water and effluent water quality monitoring, maintenance, periodic evaluation of the performance of the remedial operation, and the preparation of technical reports5uitable for submission to the regulatory agencies. COMPLIANCE WITH UNDERGROUND STORAGE TANK REGULATIONS The underground storage of hazardous materials is regulated at the city, county, and state levels of government. Geosystem routinely prepares the necessary permit applications and supporting documentation, and performs field activities associated with compliance. Field activities may include: o Assessment of tank integrity by precision testing and investigation of underlying soil and ground water quality. 5 ~~©~W~lT¡~ }~J .., - , 1 1 -I ! .J 1 ] 1 1 -, I , I j J :J I ¡ ¡ . j' o Monitoring installation systems. tanks, vapor including monitoring existing continuous of of o Tank closure/abandonment. In performing these activities, bringing the storage facility into regulations in a timely and cost minimum of inconvenience to normal Geosystem is committed to compliance with the applicable effective manner, and with a operating routine. ENVIRO~NTAL PERMITTING Geosystem has considerable experience in obtaining environmental permits, including: o National Pollution Discharge Elimination System (NPDES) permits. o Hazardous waste variance permits for on-site treatment of contaminated soil and ground water. o Construction, excavation, and building permits from local government agencies. o Air quality permits for air stripping operations. WASTE CLASSIFICATION An expanding and successful Geosystem specialization involves characterization of specific wastes for hazard/non-hazard classification and hazardous waste delisting petitions. These investigations typically consider the characteristics of the waste and its environmental setting. Geosystem has investigated and classified wastes such as mine tailings, petroleum refinery wastes, and other industrial wastes. Geosystem I s successful delisting of mining waste has resulted in considerable cost saving to clients. HEALTH AND ENVIRONMENTAL RISK ASSESSMENT Geosystem performs endangerment assessments to evaluate the risks associated with possible environmental and human exposure to 6 i~ ¡ ~ f(J ~ '\Jl © 'l7 re rr.:vl <:::ó-JL=~'-=:) If ~ U l£J\:e; \ - ..... ¡ 1 I ¡ 1 l '"I .1 '] 1 11 -1 :.j ] i J IJ I . . . hazardous substances. Risk assessments have been conducted for remedial alternatives ranging from no action to complete remediation. Predictive modeling of chemical transport is often an integral part of these investigations. INDEPENDENT REVIEW AND AUDITING Geosystem's senior staff is frequently retained to provide independent peer review of investigations performed by others, as well as expert testimony in court. Geosystem's multidisciplinary staff is capable of providing comprehensive audits of soil and groun~water remediation projects. 7 @í5(CD~W~ulç~J .' '. , , I - j '1 KEY PERSONNEL The capabilities and responsibilities of the key Geosystem personnel are briefly described below. '1 I I Dr. Mohsen Mehran, a Certified Ground Water Professional, is Principal-in-Charge for all waste management related projects. He has 25 years of experience in hydrogeology I ground water quali ty , and environmental sciences and engineering. He has serv~d~ in senior technical and management positions with responsibility for conducting large-scale investigation/ remediation projects. Dr. Mehran has also been responsible for performing complex ground water/contaminant transport modeling proj ects. The contaminants of concern have included volatile organic compounds, pesticides and herbicides, petroleum compounds, lead, chromium, arsenic, and copper. Dr. Mehran has extensive experience in interaction with regulatory agencies. l 1 1 1 Mr, Philip Miller I a registered civil engineer, has more than nine years of experience in geotechnical and waste management proj ects. He has served as proj ect engineer for geotechnical/ hydrogeological investigations of landfills, and as a proj ect manager for a number of site assessment investigations. These proj ects have invol ved design of moni toring networks, aquifer testing, and ground water/contaminant transport modeling. He has supervised numerous drilling and well installation projects. He is familiar with EPA protocols for sampling water for organic and inorganic analyses. l 1 I I J- J J J J Mr, Mehdi Miremadi, a certified ground water professional, is a chemical engineer/hydrogeologist with more than nine years of experience in waste management and ground water resources. He has served as project engineer and project manager for remedial investigations, feasibility studies, hydrogeologic investiga- 8 r;::=:::.:. E' ru ~ \V7 0 ¥ rc' i'ì\'~ (~Ie.~;.~ U ~ u IL-!AJ i 1 ] 1 J I i J , J I " > tions, ground water resources investigations, and soil and ground water remediation proj ects. Mr. Miremadi has also conducted ground water flow and contaminant transport modeling and has interacted with regulatory agencies. Mr, Jav Carter is a senior project geologist with seven years of experience in oil-related exploration and soil/ground water investigation projects. His experience includes field supervision of site characterization studies at several active and inactive hazardous waste landfills in California and ground water"~ality investigations at several mining and manufacturing facilities. Mr. Carter has extensive experience in all forms of drilling and well installation techniques. In addition, he is experienced in aquifer testing and aquifer remediation using separation, carbon adsorption, and air stripping techniques. Mr. John Chevallier, a registered civil engineer, has 14 years of experience in geotechnical engineering applications. He has directed geotechnical projects from inception to completion. His experience includes foundation design/recommendations for hi-rise structures, commercial, and residential buildings; design of difficult foundations for soft, expansive, and collapsible soils; geotechnical investigation and analyses of off-shore and near- shore structures; in-situ determination of soil properties; and finite element analyses. Mr, Paul LiDinski is a registered geologist who has more than 10 years of experience in ground water hydrology in California. He has been a principal investigator for soil/ground water contamination proj ects during his work at the U. S. Geological Survey and in consulting. He is responsible for hydrogeologic investigations including design of aquifer tests, monitoring networks, and evaluation of remedial options. 9 ~ ¡r= Ù (ê? \\17' (ê? ==ïr fE' r0 (.'1 \Sj ~ \::d) ~ ü ~ u L;; U\:!u I ~ , I I I 1 , i ] l J J ¡ 1 1 I I . l 'J , J J iJ I . .; " Dr, Iraj Javandel has more than 20 years of experience in hydrology and computer mOdeling. He is responsible for the design of hydrologic testing programs and conducting ground water/contaminant transport modeling. He is the author of the popular book entitled "Ground Water Transport - Handbook of Mathematical Tables," published by the American Geophysical Union. He is also the author of the book entitled "Evaluation of Ground Water Treatment Techniques." Mr, David Hoashead is a mechanical engineer with extensive expert~se in the application qf microcomputers to data management and modeling. He has developed ground water data management systems to comply with regulatory' agency and client-specific requirements. Mr. Hogshead has applied his computer background to solving ground water and contaminant transport problems. He has been project engineer for the design of hydraulic control and ground water treatment systems. Mr. Hogshead is also an experienced field engineer with considerable experience in drilling, soil sampling , monitoring well installation, ground water sampling, and aquifer testing. Dr. Mehdi Tavana isa chemical engineer with more than 15 years of experience in the application of engineering principles to problem-solving. He has been in research and development positions in the chemical manufacturing or organic compounds. Dr. Tavana has extensive experience in the evaluation of soil and ground water treatment techniques for removal of volatile organics and metals from soils and aquifers. 10 ¡R, ïë:' tV ~ \V7 (Q\ 'l? E i.'\iÌ! (,!sJLÇ~~ 'ú è;2) U j~U~/U il 1 l I J 'J j 1 i l l ,~ .J j J I J . .~ . APPENDIX A '. ~ REPRESENTATIVE PROJECT EXPERIENCE (Gl re (Q) ~ W~U E f\'., !!'¡ I :::;-¡ r- ;=J : I";,, '.:;3J ~ ' (" I '- :J \:.: c. I I i : 1 1 ] 1 1 '1 l .J J J I .. . APPENDIX A REPRESENTATIVE PROJECT EXPERIENCE A number of projects have been selected as being representative of the full range of Geosystem's capabilities. A brief description of the selected projects is presented. '. .(" @F~~\Lf~1rc]~J I _ , I 1 1 -1 I 1 1 1 '1 l _J J J ! J t / ,>. SITE INVESTIGATION AND REMEDIATION UNDERGROUND STORAGE TANK FARM SAN JOSE. CALIFORNIA A number of volatile organic compounds, including trichloroethylene and tetrachloroethylene I were detected in soil and shallow water-bearing zones to a depth of about 50 feet. Four phases of investigation have been conducted by previous consultants to define the areal and vertical extent of " ~ contamination, to identify and evaluate viable mitigation alternatives, and to develop design parameters for the most appropriate alternative. To contain and remediate ground water contamination, a remediation program was initiated in December 1986. The program includes ground water extraction from several wells and treatment by air stripping and bio-oxidation. Geosystem is currently responsible for extensive monitoring of the site to evaluate the effectiveness of the extraction/ treatment system. The effectiveness of ground water extraction is performed by utilizing hydraulic data to define the zone of influence of pumping. Field measured data and analytical and numeric mOdeling are used to perform this evaluation. The efficiency of the treatment system is evaluated using the moni toring data collected during the first year of the system operation. Based on this evaluation, Geosystem is providing recommendations for modifications to the extraction and treatment system to increase the remediation effectiveness. For this proj ect, Geosystem has developed a Quali ty Assurance Project Plan, Soil Sampling and Analysis Plan, and Site Safety Plan. These documents have been reviewed by the RWQCB and EPA and approved for implementation. Geosystem is responsible for implementation of quality assurance/quality control measures. (?i: r= rF0 CC? '\w (Q. 'l? I ;; ~\ ,-;1 ~ i r- \'d) ~ 11 ,;V U LS j\:. J SOIL REMEDIATION SEMI-CONDUCTOR MANUFACTURING FACILITY MOUNTAIN VIEW, CALIFORNIA 1 Several organic solvents, including trichloroethylene (TCE) and xylene, were detected in soil and ground water beneath an underground storage tank. Previous investigations had delineated the vertical and areal extent of contamination. Utilizing the '. ~ available data, a remedial action feasibility study was conducted and the impact of viable remedial alternatives on downgradient water resources was modeled. l -ì I All available site-specific hydrogeologic and soil/ground water data were reviewed. Viable alternatives to mitigate soil and groundwater conditions were screened, and four were selected following the guidelines of the California Regional Water Quality Control Board. The possible environmental consequences of each alternative were investigated using a two-dimensional ground water and contaminant transport model. The capital and operating costs of each alternative were estimated. Based on engineering feasibility I environmental enhancement, and cost, the most appropriate alternative was selected. This alternative included removal of contaminated soil and on-site treatment by aeration to reduce TCE and xylene concentrations. Detailed design parameters for implementing this alternative were developed. The on-site soil remediation required construction of a lined soil treatment area and an extensive shoring system to support existing structures adjacent to the excavation. Air quality monitoring stations were installed near the excavation and aeration areas to evaluate possible impacts of airborne volatile organics on the surrounding area. The soil remediation has been completed, and the residual solvents in the aquifer are contained by a hydraulic control system. The design of the hydraulic control of the two- aquifer system was part of this project. , 1 , ) ,1 Il I l _ J J I i I @~(Q)§V' ~c::;-;:J~:-;ì¡7'1 ,!..- JI....--.:::¡i!-~·'·, '.....7] C. ~ ~) u! }~ ~ 1 ! SITE REMEDIATION PAINT MANUFACTURING FACILITY LOS ANGELES. CALIFORNIA -, I I ! Toluene, xylene, butyl cellosolve, and other solvents are believed to have leaked from underground storage tanks at a paint manufacturing facili ty and are present in liquid form on the ground water table. Geosystem was retained to review the '. ~ existing data and to prepare and implement a remedial program addressing the soil and ground water contamination. Approximately 71000 gallons of liquid product have been removed from_ the ground water table to date, and product recovery is continuing. The remediation plan prepared by Geosystem includes underground tank removal with on-site aeration of contaminated soil. The contaminant plume is to be addressed by extraction to effect hydraulic control with treatment of the contaminated ground water. Geosystem has submitted a work plan to the California Regional Water Quality Control Board, Los Angeles Region, to investigate any potential off-site mitigation. The work plan has been approved and is currently being implemented. 1 1 .., I !l , 11 i 1 J ¡ I I ~ ß; 1) ~ 'WI (Q:> ¥ E 'lì ,'7] ~l£~~ u ~ U !~ u\~:u I. SITE INVESTIGATION AND REMEDIATION CHEMICAL MANUFACTURING FACILITY SAN FRANCISCO BAY AREA. CALIFORNIA ., I I The presence of ethylene dibromlde CEDB) in soil and ground water initiated an investigation in which the areal and vertical extent of the contamination was defined. Geosystem's staff subsequently utilized the data to evaluate various mitigation alternatives, develop design parameters, implement the most appropriate option, and e~\luate the effectiveness of the option. A summary of the investigation/remediation phases conducted to date is presented below. I 1 1 1 1 1 Phase 1 - Remedial Action Feasibilitv Studv ~he available site characterization data were reviewed and various remedial action alternatives, pertinent to the surficial soils, shallow water-bearing zone, and a deeper aquifer, were evaluated. This evaluation concluded that the most appropriate alternative included hydraulic containment of EDB in the shallow zone and the deeper aquifer. Concern over migration of EDB and potential exposure to human health and the environment initiated an endangerment assessment investigation. This assessment identified the migration pathways and evaluated the risks associated wi th possible exposure through air, soil, and ground water. Phase 2 - Remedi"al Desian and Implementation The design included extraction of ground water from deeper wells, treatment of contaminated water by carbon adsorption, and re-injection of treated water into the aquifer. This hydraulic control and treatment system has been implemented, and the system is currently in operation. -1 ! Phase 3 - Evaluation of Remedial Actions The ongoing extraction/treatment/injection system is being monitored to evaluate its effectiveness. Initial data have demonstrated that hydraulic control measures implemented in the aquifer are capable of containing the known EDB plume. Present issues under investiga- tion include the potential impacts of off-site ground water extraction to reclaim the saline aquifer, and the water quality and hydraulic communication of various aquifers. The effectiveness of ground water extraction is being evaluated using flow and contaminant transport modeling. ¡I ~ rc::; fR-.. ~ 'Wi ~ 'ï? 'C::: ïï' ,7' ~ [f; Q; ~ ìJ ¿;V U I, lJ'~/J 11 l \ I I i~ , I J 11 J J I , ¡ " -./ " REMEDIAL ACTION FEASIBILITY STUDY, DESIGN, AND IMPLEMENTATION GASOLINE STATION SAN JOAOUIN VALLEY. CALIFORNIA Liquid gasoline and dissolved petroleum hydrocarbons were found in ground water at a site underlain by fractured granite bedrock. utilizing available site characterization data, Geosystem perfo,~ed a remedial action feasibility study in which viable remedial options were considered and screened. Four technically and economically feasible options were selected and presented to the client for review. Subsequent to selection of the most appropriate remedial action, Geosystem designed a hydraulic control and ground water treatment system to contain and remediate the subsurface conditions. The design included extraction of contaminated ground water from three wells and treatment by activated carbon adsorption. Geosystem subsequently completed all environmental permitting associated with the proj ect, including NPDES requirements for surface discharge of treated water. Geosystem was selected as the general contractor for the installation of the ground water extraction and treatment system. The project involved installation of 1,200 feet of double-containment underground pipeline to transfer the contaminated water from extraction wells to the treatment system. The system is currently in operation and complies with the design specifications and waste discharge requirements established by the California Regional Water Quality Control Board. @~(Q)~W~u~~J SITE INVESTIGATION AND REMEDIATION WOOD PRESERVING FACILITY UKIAH, CALIFORNIA !- A soil/ground water investigation was initiated to delineate the extent of hexavalent chromium contamination resulting from wood preserving operations. Data obtained by previous consultants were ..r~viewed, and data deficiencies were identified. Based on the results of that study, additional field investigations were conducted to further delineate the areal and vertical extent of contamination. Subsequently, a comprehensive geochemical program was .developed to evaluate the leaching behavior of Cr under laboratory and field conditions. It was demonstrated that most of the Cr in the soil is in the form of Cr(III) and is immobile. Based on detailed hydrogeologic studies and geochemical data, viable remedial alternatives were evaluated, and the most appropriate alternative was selected. The selected alternative included physical containment by slurry wall construction and hydraulic control of the plume by an extraction/injection system. An electrochemical unit was recommended to treat excess water that could not be recycled in the wood preserving operation. Additional hydraulic testing and modeling was performed to demonstrate the effectiveness of the extraction/treatment/ injection system. Geosystem is currently finalizing the Remedial Action Plan for regulatory agency review and public participation. 1 Il I , 1 1 I] 1 i Ii I ~ ~ rR\ ~ W7 0 'l? rc::? f0 'l \·81! -- \\J; ~ ìJ :§) U LS U\tu SITE CHARACTERIZATION PAINT MANUFACTURING COMPANY SAN GABRIEL VALLEY. CALIFORNIA 1 Geosystem has been retained to perform a site characterization study requested by the California Regional Water Quality Control Board, Los Angeles Region. The study has been combined with a prev~o~slY planned investigation related to underground storage tanks at the facility. The investigations have identified alcohols and ketones in soil around the tanks and chlorinated volatile organic compounds in ground water beneath the site. As ,the _ site is located in an area of documented ground ··water "...-' contamination, an extensive review of regional water quality was ini tiated which indicated the presence of chlorinated volatile organics in ground water on a regional basis. Geosystem is currently representing the client in negotiations regarding the extent of their responsibility. Geosystem is also designing new underground storage facilities while planning to remove the existing underground storage facilities. It is anticipated that both soil and ground water remediation will be required during the performance of this project, ~ , 1 \ I 1 . 1 1 1 ] j I! I ¡ ~era~w~¥rc:\\i!1 \8j I r-' \~ ¿;V ìJ 0) U L;; j \.:. ~ ·' IJ 1 1 , 1 1 ì J I ¡ HAZARDOUS WASTE DELI STING PETROLEUM REFINERY COLORADO Geosystem is currently engaged in characterizing wastes generated by a petroleum refining operation in order to compile the required data for a petition to delist the waste. A sampling protocRl was developed and submitted to the U.S. EPA and approved for implementation. The field program included waste sample collection and compositing according to U.S. EPA sampling protocol. The analyses of samples, including the characteristics . of hazardousness. and a subset of the Appendix VIII constituents, has been completed. Potential impacts of the waste on the ground water have been evaluated using the prescribed VHS and organic leach models. Additional analyses have been performed to characterize the leaching behavior of the waste using the proposed TCLP. Interpretation of the data and modeling activities related to chemical migration are currently being evaluated. ~~V@,\j7©~rc8r:J \8J 1£ \\0 <:':0 Ü <§i lJ ~ j \~,' GROUND WATER OUALITY MONITORING COMPUTER MANUFACTURING FACILITY TUSTIN. CALIFORNIA 1 Geosystem is responsible for quarterly ground water monitoring at a computer manufacturing facility which handles organic solvents and metals. The organic solven~s include primarily 1,1,1- trichloroethane and isopropanol. The metals include chromium, '. ~ nickel, and copper. The monitoring system, installed by Geosystem personnel, is designed to provide an early warning of spills or leaks from underground storage facilities. 1 i I ì 1 j ì .1 I j J I : I', ~ r? Û ~ 'V7@yr;=ï;\,7'1 \s9¡E\~~ 'V <32) U Ir ~\~; UNDERGROUND STORAGE TANK MONITORING CHEMICAL DISTRIBUTION FACILITY SACRAMENTO. CALIFORNIA I l Geosystem provided hydrogeologic and soil/ground water quality characterization of a site where volatile organic compounds are stored in a number of underground tanks. A tank monitoring system was designed and implemented in accordance with state .-\ regulations. The system includes continuous vapor monitoring of the vadose (unsaturated) zone around the tanks and ground water monitoring. The vadose zone and ground water monitoring wells, and ~he electronic monitoring system were subsequently installed by Geosystem. Geosystem is currently responsible for routine monitoring of the system. i i j I 1 i , I I 1 j . . l , I I I I J .. ! j , j J 1 i ! rr:: rc; 15' ((3> "\V7 ~ =r <=1 ' :.\ ,-;¡ \.\ª L£ \\d) ~ ') ìJ '-::3 U ¡- U\. ~ HAZARD/NON-HAZARD CLASSIFICATION MINE TAILINGS HIGH DESERT, CALIFORNIA J j An investigation was performed to characterize tailings from a mining operation in California I s High Desert. The possible impact of lead and copper in the tailings on the surrounding surface and ground waters was also investigated. Subsequent to defini~g the hydrogeology of the site and vicinity, a geochemical program was designed to determine the concentrations of lead and copper in the solid matrix and ground water. Moni toring wells were installed in the tailings impoundment and underlying bedrock to eyaluate the in-si tu leaching behavior of lead and copper. This was accomplished by measuring the concen~rations of lead and copper in the solid matrix and the intersticial water. Similar tests were performed on rock samples which had not been subjected to mining and milling operations. The study integrated the theoretical aspects of the geochemistry of lead and copper with labora~ory and field data, The inves~iga~ion demonst~ated that due to the mitigating effect of the site-specific conditions, lead and copper are essentially immobile. The results of the investigation were utilized in non-hazard declaration of the mining waste by the Department of Health Services. -, l ! .. -, 1 l i -'1 . i ..J , t ~ J II J IN P 0: A '\W @ ~l r rc r.\ ,1 \~ I~ I\J)~?ì ìJ ~ J L;; 0'.:. ~ .- CLOSURE OF SURFACE IMPOUNDMENTS PETROLEUM REFINERY COLORADO 1 1 Geosystem has been engaged in evaluating various technologies to prepare a closure plan for two acid sludge impoundments containing petroleum refinery waste. A total of 17 viable technologies were screened based on engineering feasibility, .~ environmental enhancement, and cost. Laboratory tests were performed to evaluate the neutralization requirements of the aqueous phase of the acid sludge impoundments. Various neutralizing agents were used to determine the most appropriate agent for .maximum water/oil separation. These technologies ranged from "no action" to complete remediation. Four alternatives were subsequently selected for further evaluation. Each alternative consists of one or more technologies to address various phases (aqueous, top sludge, bottom sludge) of the acid sludge impoundments. Neutralization, phase separation, fixation, and solidification are among the selected technologies. I I , t ~ sf?\\@\'7@=¡--;=:,77' 1(.3!!_\,\J)r~ :\ r,_": I! : " - .... ------ -- ~- -- -" - - - - - HYDRAULIC CONTROL SYSTEM DESIGN HALOCARBON COMPOUNDS NEWARK. CALIFORNIA , ., ] To contain and remediate a shallow aquifer contaminated wi th ethylene dibromiàe and 1, 2-dichloroethane, a hydraulic control system was designed. The project consisted of two phases. In the fi{st phase, Geosystem installed wells and performed aquifer tests to àetermine the desired design parameters, such as flow rates, well spacing, and well construction details. The second phase included the preparation of the detailed design, including specifications for extraction wells, piping, electrical, and hydraulic features. The design package is suitable for submitting to contractors for bidding purposes. The design package has been reviewed by the client, approved, and submitted to the regulatory agencies prior to being implemented. 1 1 J ì j 1 J f0-> P 15' @ '\,;J @ If rc ii\ ~ \ \::::::1 c_ \\:-!} ~-=:) Li '':..--!) c; 1..:..___ -,' '':' . ï I ! , ., , . WOOD PRESERVING FACILITY TURLOCK. CALIFORNIA In August 1987, Geosystem was retained to perform a formal Remedial Investigation/Feasibility Study (RI/FS) for a wood preserving facility. The site is underlain by soil and ground water contaminated by hexavalent chromium, Geosystem reviewed all cwailable data and prepared a ·";0:::-;-: plan to add:::-ess the requirements of the RI/FS. The work plan has been approved by the Department of Health Services (DHS), the California Regional Water Quality Control Board, Central Valley Region (RWQCB), and the - u. s. Environmental Protection Agency (EPA). The scope of work includes review of previous studies; further delineation of the extent of chromium, arsenic, and copper in the soil and ground water; evaluation of remedial action. technologies; and development of a Remedial Action Plan. The project is being closely monitored by the DHS, RWQCB, and EPA. (~rs=(f))~,\l::§!fi, -;-.~ ,~:",_;'.l1 , ':::-_ '-=-~! _. .~'-:'.) "_1 . == u _ , .. -, i I ! I ; 1 ¡ . \ I ~ I I j ~ ":'" ENVIRONMENTAL ASSESSMENT AND DEVELOPMENT OF GROUND WATER REMEDIATION PETROLEUM REFINERY WYOMING Geosystem has been retained to review the subsurface characterization reports for a petroleum refinery at which oil and pet:roleum products have ccntamina;:ed s-round wat:er and are presen~, In liquid fcr~, on the water ~able. The site characterization studies have shown that approximately 300 ,000 gallons of free product may be present under the site. Geosystem has also been retained to prepare a ground water remediation plan to recover the free produc-t pool and to contain/remediate the contaminated ground water. The remediation plan includes recovery of free product and containment and remediation of dissolved hydrocarbon compounds and metals. The design includes the use of collection trenches and wells for product recovery and hydraulic control. The treatment system may include air st:ripping and/or granular activated carbon adsorption for dissolved hydrocarbon compounds and electrochemical treatment for metals. Geosystem has been nominated to be the general contractor for this project. ---------"7~---"'""'I.-, t?0 F "~\r-.,) '" (r::.~rl'--" " \ \:::-~ ¡ := (,I )I_~ \, ~-? \~ !,::=:_. . ;, -, , ! ì I ! 1 ~ , '~ j J ~ ,~ EVALUATION OF SOIL CLEANUP MORTGAGZ DEVELOPMENT BANK SAN FRANCISCO, CALIFORNIA Construction of a multi-story building at a site in south San Francisco required a permit from the Department of Health Services and the California Regional Water Quality Control Board. The si ta had previously been oC:::'..1pied by C'. pain-c manu::act'..lring ~ company and soils a~ the site were found to con~ain a number of metals at concentrations in excess of regulatory standards. Geosystem staff reviewed the site conditions and clean up efforts and summarized the information for submittal to the agencies. The evaluation demonstrated that the vertical and areal extent of contamination was defined, that the clean up activities were sufficient to bring the site in~o compliance with exis~ing regulations, and that the impact of residual contamination, if any, would be insignificant. The site was subsequently developed, (~ rc rF\ì K-- "'-V( @? E '--;', --:- \~~!:\:-¿))-~ L \,:::J J :-u·~._ .- 1 ! j , , I; t. . ~ EVALUATION OF EXTENT OF SUBSURFACE CONTAMINATION CHEMICÀL DISTRIBUTION FACILI~Y LOS ANGE~ES, CALIFORNIA Geosystem is currently of volatile distribution presence chemical reviewing the data pertaining to the organic compounds (VOCs) in soil at a facility. The scope of work includes eval1..la"t.':"on of the arsal and ver-:':"cal dis-.:::':"but':"on of VOCs in ~ soil, iàen"t.ification of any additional soil sampling and analyses, evaluation of potential migration of VOCs to ground water, and recommendations concerning any future actions. 0-:.!? f0\ (Ñ '0,7 (N--'r Ir- --:- -:- (I ..::,i ~I_l\, IJ''':~] ',~ ~~)}. j !~ . ''':.-:''.: -== . --:=_ _=J ~ ,=_ :" .-== - - " ~ I il !t , . , ~ ! , J " . '" ENVIRONMENTAL ASSESSMENT PETROL:UM REFINERY LONG BEACH. CALIFORNIA Geosystem was retained to review the subsurface environmental characterization of the refinery potential liability associated with and provide estimates of contamination conditions. The evaluation was :Jer::cr::¡eå to assist -;:)ot::mtial buyers of the ~ - - facility ~n assessing potential short-term and long-term liabilities. Reports of the previous subsurface investigations were reviewed. Based on available data, proposed remedial act~ons were evaluated. utilizing the water quality data, thickness of free product present on the ground water, and volume of contaminated soil and ground water the time and cost of cleanup were estimated. -~ - -, r;:::- -:-\112'=--=-'- II~..J.I--- /,'-'''ì¡''::.} \\/ ~..... ;ïìL- " ' i. : ,_~ i, ~~ (! -=:U ~ L ~'::: ", : ~ " _ _' ~~ l J ~ ~ .. SUBSURFACE VAPOR MONITORING PROPERTY DEVELOPMENT COMPANY SANTA FE SPRINGS, CALIFORNIA Geosystem was retained to investigate the possible presence of hydrocarbon gases (particularly methane) in near-surface soils at several sites under development within active and inactive oil and gas fields in southern California. These investigations -:'''t~i=.:l~: ~'.;P ':":1c':' "...lde :- ':"eld ::leasu==:mer:-:.s cf -:.~t:;.~ ':Jrcanic¡l CO¡¡ÜJus~:'ble _ . _ J gases and the collection of soil gas samples at selected locations for detailed analysis. Gas sampling is performed by driving a stainless steel probe to the desired depth with provisions to prevent atmospheric interference. Field screening is conducted by portable gas analyzers to assess the presence of high concent::-ations of gases. :::"aboratory analyses of selected samples provides data on specific hydrocarbons present in the soil pore space. Depending on the subsurface gas concentrations, type of building foundation, and proposed building use, Geosystem provides recommendations regarding further monitoring or remedial measures, as appropriate. /,~ ! =: (/::::;.\ (~ - \,'_~,:-, " l:- ! . "7-:-" \ \ -~ ~ = ,\ ..: / --: ,"\ (. .- MOHSEN MEHRAN EDUCATION ?h.~., civil Z~gineer~ng University of California, Davis; 19ï1 M.S., Soil Physics University of California, Davis; 1966 B.S., Agricultural Engineering Tehran University; 1962 ~~,........c-~,:" mTI"'T 'r''T;'~m'T'~'''''''''''' m'T'''''N --u...-----X---...'t/ '-_'\.--- --.----... certified Ground Water Professional No. 189 AFFILIATIONS - American Association for the Advancement of Science American Geophysical Union Association of Ground Water Scientists and Engineers California Mining Association Na~ional Wa~er Well Associa~ion Society of Sigma Xi PROFESSIONAL QUALXFICATIONS Dr, Meh::-an IS geohydrologic backg::-ound inc2.udes botl1 experimental and theore~ical expertise in the areas of t::-ansport phenomena in fractured porous media. He has developed and applied numerous computer models to solve ground water flow problems and investigate the migration of various chemical compounds. He has applied this technical specialty ·to evaluation of mitigation alternatives, development of cleanup c::-i teria, ground water restoration, site ':":l'~Jes~':"'qa -:.:'cn , and 3ci2. =~!!led.ia ~:'cn :;:;r::J ec~s ::::::- c2. i 8n~3 :.n --=':::e ;"'\c.-r---," ':::'1''''''''' :::'''-' __ ....,__.....4110110 " ~ ~ .,:)~---."r"'\ -\ --== ------ -.....--- f c~e!!'.ic.:il , ·'¡¡OC::' ?r::se::-l :.~g , and communications industries. Professional recognition of ten years of research and teaching, and the publication of more than 30 technical papers, is rei~erated in the biography published in Who's Who in the West anà in Who's Who in Technology Today. Dr. Mehran is the recipient of the Institute of International Education Award. EXPERIENCE AND BACKGROUND Jan. 1986 Present - PrinciDal Hvdrolocrist Principal-in-Charge, Project Manager, and technical contributor in ground water investigation and remediation projects. ~! c r01¡ ~ \\/1 ~ l~r rc; ~\'~ \(5,1_,-../)-':)) ,,":::::'; . Ic::'.· ~'- - - - - - '- ~ --' ..... -. .... i\ , l10HS:::'l ~Eh""RhlI ?aae 2 Major c~r~ent ?rojec~s ~anaged ~y D~, Mehr~n ~nclude: o Evaluation of the effectiveness of a ground water remediation program to reduce chromium concentrations in the ground water at a site in northern California; development of a comprehensive Remedial Action Plan (RAP) in accordance with guidelines of the Department of Health Services. ~ o SubSU==3.C3 ':'nves-=:'=at':'cn of _ s1. ta :':1 San C'ose. Cali~or~ia ~~ ãeli~ea~3 ~~e eX~2n~ ~f of=-si~~ chemical migration and to evaluate the effectiveness of an on-site ground water extraction and treatment system using air stripping and bio-oxidation processes; development of Quality Assurance and safety Plans in accordance with u.s. EPA protocols. o Modeling ground water flow and ethylene dibromide (EDB) transport to evaluate the effectiveness of an ext:rac-=ionj inj ec-=ion prcgrar: at: a facili ty in northern California; preparation of technical reports in accordance with the requirements of the California Regional Water Qualit:y Cont:rol Board. o Evaluation of ground wat:er ::-esources and dissol veà pet:roleum hydrocarbon migrat:ion ~n a fract:ured granite formation in central California: ground water extraction/treatment system design; assessment of remedial action alternatives. o Characterization of solid wastes generated by a pe~~oleum r8f~~e~! and 2va¡~a~~on of c~osu~~ cp~~c~s for surface impounàments. o Development and implementation of Remedial Investigation/Feasibility study (RIjFS) for chromium (VI) cont:aminat:ion of ground wat:er at a site in central California. Dr. Mehran is active professionally by publishing and acting as a reviewer for the Journal of Ground Water. 1981 - 1985 Project Manaqer/Technical Specialist-Hvdroaeoloqy Was responsible for overall t:echnical and financial performance on major projects involving ground water and soil contamination. Conducted hydrologic investigations and prepared site-specific numeric models of the transport of contaminants in soils and ground water. Was responsible for conducting (;:::::c I' c (r,\ (~,\',/7 (C:' --, ï: '- -:-, :- (~r-"""'\ i'.-:::'::::- : ....-....., II I: .'. \~:'.; ~ ::.:.-/ :-=: I '_: '::::,! ~ '-== _ _ _ "" .. ~f""'T"¡C"':""~1' '."!"~-:.:""" -: ".~ ..VJ...._~.1 ..........t'l.:U't 1979 - 1981 1.977 - 1979 1974 - 1977 1971 1.974 ?age ~ evaluations of cleanup alternatives, negotiating with stat:e and federal agencies, preparing remedial action plans, and conducting remedial action at si tes throughout California. ~ staff Scientist LAWRENCE BERKELEY LABORATORY. Berkelev, California Was responsible for evaluation of the hydrogeologic consequences of dewatering oil shale sites in Colorado. Ut~~~=~~g ~u~eric~l models, developed ~he c3pability of simula~ing ~~e lcng-~~~ ef=2c~3 of dewa~2~~~g and reinvasion of water by considering saturated- unsaturated flow in an expanding underground mine. During this period, was also engaged in fundamental formulat:ion and computer model development: of simul taneous transport of water, solute, and heat in fractured porous media. A practical application of this research relates to the migration of radionuclides in high-level underground nuclear waste repositories. Visitinq Associate Professor UNIVERSITY OF CALIFORNIA. Davis, California Was responsible for modeling nitrogen transport and transformations and their impact on ground water pollution. This work was suppor--:ed by the National Science Foundation. The computer models developed by Dr. Mehran have been successfully applied to the behavior of nitrogen in actual field problems. Associate Professor. civil Enqineerinq Department TEHRAN POLYTECHNIOUE. Iran ':'aught c::m:::-ses in advanc2ci q:::-:::und '..;at2r :'1~..:d=:::lcc;y and soil mechanics. cont:inued research in transport: phenomena in soils. During this period, Dr. Mehran supervised numerous graduate students on various research topics and provided consulting services for private organizations. Post-Graduate Scientist UNIVERSITY OF CALIFORNIA. Davis, California Conducted research on transport and transformations of various nitrogen species in soils under saturated and unsaturated flow conditions, applied to nitrate pollution of ground water. r=- -~, ~~ ~~ ---- (¡....-"j ¡ r-- I ( " \ i.--.;. \ \ " I (r"'\..:. ! r :- ; I . I,t.-:-:~~~ .:~>,~·;;·I \~f ~$J !_ ¡ l"~.,_,_: ·- ¡,- . :"!CESZ!\I 2·!EE?~;]~ PaC'e -r 1969- 1971 Resea~~~ ~ssista~t UNIVERSITY OF C~L:F0RNIA. ~avis, C21ifor~ia Dr. Mehran I s earlier research area was the study of coupled flow phenomena in clay-water-electrolyte systems. His investigation of the simultaneous flow of water, ions, and electric current in porous media was one of the pioneering efforts in the non-destructive characterization of the mechanical properties of porous media. This effort has been perfected to allow the ?~=di=~~on of S9r~~~~ ?crcus ~eè~a par~ne~ars! ~mpor~an~ ~o engineer~ng 5~=~c~~=es. ~ PUBL:: c......T! ONS Mehran, M., "Influence of Soil Moisture suction on Soil Tensile and Compressive strength," M.S. Thesis, University of California, Davis, 1966. Mehran, M., "Developmen~ of Air Force Erosion Cont=ol Manual," report to Water Resources Engineers, Inc., Walnut Creek, California, 1969. Mehran, M" "Electrical Dispersion and Electrokinetic Phenomena ':n Clays," Ph.D, Dissert:at~on, University of California, 1971. Mehran, M. and K.K. Tanji, "Chemical Flooded Rice Fields," paper presented Environmental Division of American Society Meet':ng, November 1, 1972, Miami, Florida. Transport in before the of Agronomy Mehran, M., K.K. Henderson, "Chemical Management Systems, II Working Group, p. 72, Tanji, J.W. Biggar, and D.W. Transport Under Different Water Proceedings of 14th Rice Tech., 1972, Mehran, M. and K.K. Tanji, "Computer Nitrogen Transformations in Soils," Environmental Quality 3(4):391-396, 1974. Modeling Journal of of Tanji, K.K., M. Mehran, J.W. Biggar, Henderson, "~lood and Seepage Tr'later Sampl::"ng in Rice Fields Under Different Water Systems," Soil Science Society of America, 37:483-485, 1973. and D. W. Techniques Management Proceedings I,~, (F\!;~ \\.7:s::,ir :-:--:- "-. ~- ..' " ¡·10HSE:I; l1EHRAJ-l Page -' ~anji, X.X., M, Mehran, J,~, 3iggar, and D,W, Henderson, "Dye Tracsr Movement in Rice St::ip Plots, II California Agriculture 27(7) :10-13, 1973. Tanji, K.K. and M. Mehran, "Computer Modeling of Nitrogen Transformation and Transport in Soils," Proceeding of the First Annual National Science Foundation Trace contaminants Conference, Oakridge National Laboratory, p. 252-265, 1973. ~ Tanj~, X.~., :1. ~eh=an, ~.~~. 3iggar, ~nd ~.~. ~ialsan, "Computer Modeling of Nitrogen Transformation and Transport in Cropped Irrigated Lands," Annual Report to the National Scienc2 Founàation =or Gran~ No. G~34733X, July 1973. Tanj i, K. K. , J, W. Henderson, "Herbicide with Molinate in Cali=or~ia Agric~lture Biggar, M. Mehran, and D. W. Persistence and Movement Studies Rice Irrigation Management," 28(5) :2..0-2..2, 1974. Tanji, K.K., T.K. Kam, M. Mehran, J.W. Biggar, and D.R. Nielsen, "Computer Modeling of Nitrogen Transformation and Transport in C:::-opped Ir:::-igated Lands," Annual Report to the National Science Founàation for Grant No. GI34733X, July 1974. Tanji, K.K., T.K. Kam, and M. Mehran, "Nitrogen Studies in Secondary Sewage Percolation Ponds," Symposium on Nitrogen -Transport and Transformation, Chicago, Illinois, 1974. Mehran, M., "Contamination of Surface and Ground Waters by Nitrogenous Compounds," Proceedings of 24th Iranian Medical Congress, Ramsar, Iran, September 1975. Mehran, M. and K. Arulanandan, "Low F:::-equency Conductivity Dispersion in Clay-Water-Electrolyte Systems," Clays and Clay Minerals 25:38-48, 1977. Tanji, K.K., F.E. Broadbent, M. Mehran, and M. Fried, "An Extended Version of a conceptual Model for Evaluating Annual Nitrogen Leaching Losses from croplands, II Jourm:.l of Environmen~al Quality 8 (l) : :"14- 120, 1979. ~'. (15)~:;:~,-::··7~~,i~; -:-'~ ~i " -.~ ,;", l'10HS Zli 2'1E:iRA.i¡ Page õ Tanj i , 3:. X. and M, Heh::-an, 1I'!'1i t::-cgen ~edeling in C::-eplands, " final reper:., Ni tra:t:a in Effluents f:=om Irrigated Agriculture for National Science Foundation, Grant No. ENV 76-10283 A01, 1979. .4. Mehran, M. K.K. Tanji, and I.K. Iskandar, "Compartmental Modeling for Prediction of Nitrate Leaching Losses," Chapter 16 In: Modeling Wastewater Renovation by Land Treatment. I.K. Iskandar (ed.), Jchn ~i:2Y 3nd Sons, :98:. Gupta, S.K., K.K. Tanji, and M. Mehran, IIField Simulation of Water and Nitrogen Transport in soil- Wa1:2:r--?lant Systems, Par:. _, Wa1:e:r- ?low, II in prepara1:ion. Mehran, M. K. K. Simulat:ion of Water Water-Plant Systems. T::-ansforr:la1:ions, II in Tanji, and S.K. Gupta. "Field and Nitrogen Transport in Soil- Part II: Nitrogen Transport and p:r-epara1:icn. Tanji, K.K., M. Mehran, and S.K. Gupta, "Water and Nitrogen Fluxes in the Roo"!: Zone of Irriga1:ed Maize. Chapter 4,1: Description of Models," in: Simulation of Nitroaen Behavior in Soil Plant Systems. M.J. Frissel and J.A. Van Veen (ed,), Cen1:er for Agricultural Publishing and Documentation, Wageningen, The Netherlands, 1981. Mehran, M. , T. N. Narasimhan, and J. P. Fox, II An Investigation of Dewatering for the Modified In-situ ~e"t.==-:.:"nC' ?!"~cass! ?ic3anc3, C:=2ek 3asiZ'l, C:.lcr:=.dc ,_ 11 Lawrence Berkeley Laboratory Report No. LBL-11819, 1980. Noorishad, J., M. Mehran and T. N. Narasimhan, "On the Formulation of Saturated-Unsaturated Fluid Flow in Deformable Porous Media, II Advances in Water Resources, Vol. 5, 61-62, 1982. Mehran, M., T.N. Narasimhan, and J.P. Fox, "Hydrogeologic Consequences of Modified In-situ Retorting Process, Piceance C::-eek Basin, Colorado," 14th Oi~ Shale symposium, Golden C~lerado, ~pril 1981. Noorishad, J. and M. Mehran, "An Upstream Finite Element Method for Solution of Transient Transport Equation in Fractured Porous Media," Water Resources Research, Vol 18, No.3, 588-596, 1982. / -~ ¡ ~ (-:=:-- '. ::2: \, :7 ~'S:1 -¡ r ; , "7', 7": ...' ! ~- ¡,. ~"l\:'¡'¡SL?~ 2'1::;-:~~'; .--~C2 Mehran, M., J. Noorishad, and :K. :{. ':'anj i, "Numerical Simulation of the Effect of Soil Nitrogen Transport and Transformation on Ground Water Contamination, "Proceeding of the 16th Congress of The International Association of Hydrogeologists, Prague, Czechoslovakia, September 1982. ~ H.M. Selim, M. Mehran, K.K. Tanji, and I.K. Iskandar, 11 !1at::emat:':cal Simula-c':'cn of :ri -:'::-=c:e~ ::ntar:=,c-:'':'':::rlS i:l -:.::e SC~: ?===':":'e,:' "\10::". :5, 2·;c. :! :~:-2";G! :9ê:. Mehran, M., J. Noorishad, and K.K. Tanji, "A Numerical Technique for Simulating the :::::::ec--=.s of Soil Nit::-ogen Transport and Transformations on Ground Water Contamination," Journal of Environmental Geology, Vol. 5, NO.4, 213-218, 1984. Mehran, M., M. J. Nimmons, and E.B. "Delineation of Underg::-ound :!yd::-ocar;:on Organic Carbon Detection," Proceedings of Conference on Management of Uncontrolled Waste Sites, Washington, D.C., 94-97, October sirota, Leaks by National Hazardous 31, 1983. Mehran, M. and R.L. Olsen, "Adsorption Characteristics of Trichloroethylene (TCE) in Soil-Water Systems," paper presented at the Spring Meeting of the American Geophysical Union, Cincinnati, Ohio, May 1984. Mehran, M. and B.M. Rector, "Ground Water Treatment and Contaminant Migration Control," paper presented at the C~em:'cal :1anu=ac~:.¡r:=r3 ~sscc:"a::'':'':Jn I :'.::.2.3.r:'"::l! ':;ac:-;:'::., September 1984. Mehran, M. and R.L. Pellissier, "Geochemical Characteristics of Ethylene Dibromide," paper presented at the International Chemical Congress of Pacific Basin Societies, Honolulu, Hawaii, December 1984. Mehran, M., "University-Industry Round-Table: Research Needs in Hazardous Waste Management," presented before the faculties of Civil Engineering and Environmental Engineering, University of Southern California, October 91 1985. Mehran, M., "Modeling of Volatile organic compounds in Ground Water Systems, " paper presented at the University of Southern California, November 8, 1985. - - ~ '--'- '/- ,.....-.----.- ,~'-- - - - ..,J;.r~ .~ 1 ~·:c :-:~ ~~; ~.r""-"'-__'.~ . ...:.:...-:..:-_~" ...-.:ice ,") Pa~ele. C. S ,"to R, D, .:;'l:!.en, ,::and M. Mehran. "Steam- Regenera~ed Ac~iv~ted, Carbon-~An Emission-Free Cost- Effective Ground Water Trèatment Process," presented at American Ins_ti tute of Chemical Engineers 1985 Annual Meeting, Chicago, ,Illinqis, November 13, 1985. c. ",'1 .:..:: ',':>;.;'! Parmele, C.S., T.L. Schomer, and M. Mehran, "Industrial Prospective on In-Situ Methodology," paper presented at Southeastern Symposium on In-Situ Treatment and =~cb~~i=ation of Haza~dcus and Radioac~ive Was~a. ~ :':nc::v:'llt:, ':'annessee, C"une 3-:'0, 1986, Mehran, M., R.L. Olsen, and B.M. Rector, "Distribution Coef=:'cien~ of T~ic~lcroe~~ylene in Soil Water Systems," Journal of Ground wat:er, Volume 25, NO.3, 275-282, 1987. .- .-.-., - ..-- ~. .. - - ,. .-, , '-~ . ~ ,-;::::. -=:-= --==: -:- - -~ ==:: . --- ,,-_-':\ ~.....~-...,. ;sJ THORNE (7~ ENVIRONMENTAL Proposal for Soil Mitigation City of Bakersfield Fire Department Presented to: City of Bakersfield Fire Department Presented by: Thorne Environmental, Inc. March 1989 í'" -- ~ INDEX I. Proposal II. Estimated Costs III. Figures IV. Attachment A V. Statement of Qualifications VI. Individual Profiles 2 'J:- ..;i .. ·r, -' 'f.,\ .' ....,. -. \. - . \";" -f . :/ , - '.,: .~ \', " / ..-f ì ) z,' \ ?\ \.... " .", '. -. ~/ '., 1; ¡"- I '. '; ;f! '''~ . ,-;-- ¿':-I. -' > ;.. , . I " ~~ ~:. v .> Î ../ '.' :/ ",,' " r " ,.'.'....ø :. :- '\', ; ._,J -I. " _.... f 1\ r. .:.....:\.~t:·i·· ¡ , ¡;. ..... I~ ,-1 "/ , \ ('. " ., . , ~ . '"-1 . 'r ',:\ ", ~ -¡ !~. . / I '.') . .""':.:-:--, ';\,'; " . \'. ii' .J' -\. ,...--' :- , ..... - '-- ') --...~ - -' -' , L., jr :'-.. .~ '\ /- f ,,". ~ ; ...'.." ;\{ i" ¡ March 30, 1989 Mr, Ralph E. Huey Hazardous Materials Coordinator City of Bakersfield Fire Department 1501 Truxtun Avenue Bakersfield, California 93301 SUBJECT: Proposal for Soil Mitigation of Two Separate Sites on the Property Located at 1600 East Truxtun Avenue, Bakersfield, California. Proposal Number Y89-3-151 Dear Mr. Huey: Thorne Environmental, Inc. and Wilson & Associates (TE- W A) are very pleased to provide the City of Bakersfield Fire Department with the following proposal. In accordance with your "Request for Proposal" (RFP), dated February, 1989, we are submitting this proposal for remediation of two separate sites located on the property at 1600 East Truxtun Avenue, Bakersfield, California, as shown on Figure 1. The actual field project management will be provided by Thorne Environmental and all reports will be generated by Thorne Environmental and Wilson & Associates, Proiect Understandinl:: It is Thorne Environmental's understanding that the City of Bakersfield Fire Department (City) has requested consulting environmental engineers to prepare a proposal for the remediation of two separate sites located at 1600 East Truxtun Avenue, In preparing this proposal, we reviewed the attachments to the RFP. This proposal will address the two separate sites as two different tasks: o Task 1 Remediation of Site I o Task 2 - Remediation of Site II Task I - Remediation of Site I Scope of Work Our proposed scope of work includes the criteria described in the RFP (February 1989) prepared by Mr. Ralph Huey of the City of Bakersfield Fire Department. We propose to provide the following: o Introductory Data 3 ;:'- o Regulatory Liaison o Completion of site assessment o Installation of Vapor Extraction Wells and manifolding for Vapor Extraction System operation o Explanation of Vapor Extraction System and preliminary equipment specifications o Treatment objectives o Evaluation of mitigation o Decommissioning of remediation equipment o Site specific safety plan o Sequence of events/Estimated time schedule o Reporting The following sections will detail our proposed scope of work: 1.0 Introductory Data Introductory data would provide information pertaining to site specific information and would include: o Site name o Site location, including a map showing relationship to highways, streets, and nearby community facilities. o A brief synopsis of the site characterization performed by Geosystem Consultants, Inc.. o Site map showing the future use of the property as the 'Homeless Shelter', 2,0 Regulatory Liaison Thorne Environmental proposes to represent, as an independent consultant, the City of Bakersfield at meetings with the Kern County Environmental Health Department (KCEHD) and the Kern County Air Pollution Control District (KCAPCD), The purpose of these meetings is to develop a clear understanding of the vapor extraction system design and operation, A workplan would be prepared and submitted to the KCEHD, 4 i' The workplan is a formal document that establishes the methods to be employed in the implementation of the completion of the site assessment and the installation and operation of the vapor extraction system (YES), The workplan will include the following: o Purpose o Project Scope Schedule o o Locations and depth of assessment/vapor extraction wells o Methods of Drilling o Soil sampling procedures o Field Screening of Soil Samples o Quality assurance plan o Installation of vapor extraction wells o Vapor extraction system design and operation o Facility History o Project Background Site specific health and safety pla~ Personnel o o The treatment objectives of the remediation would also be negotiated with the KCEHD, A permit would be filed with the KCAPCD for the operation of a vapor extraction unit. The permit to construct will be converted to a permit to operate pending approval by KCAPCD, All necessary documentation would be provided to the KCAPCD as required by the permitting process, 3.0 Completion of Site Characterization Following approval of the workplan by the KCEHD, Thorne Environmental would begin actual field operations, These operations would include advancing soil borings for completion of the site assessment. After complete review of the 'Site Characterization and Remedial Alternatives Development' report by Geosystem Consultants, Inc" it is our 5 ~ understanding that soil impaction has not been completely characterized vertically in the areas of borings B2 and B4, nor has the horizontal.~ i~pact"~on~_be,~~.,..,.co!1:1Eletely characterized, Thòrne. Environmental prQRo~~~J(f ~adVancei:a:\;miíû.m\ì~òfi"~QUf borings: to a depth..of 140 feef or 5 feet -below" the:;'¡åsf:ievelt::'öf"d~t:~~t~tølfiämjiïiÍíts7 The location of the borings are shown on Figùre;;2J The borings would serve a dual purpose: Initially, they ~o,l,lJ..~~~%J}S~ø.~:~bª~~ÇtSf~ll~~J1qD!!~E~ij~;SU ~=~.o~.._.~ ...., l~t~natIB.~.~ ~~:;.y,ap.~Lr~~~r~ç~IQø:;w~\ls and final . c0J1!l~ct10~~tO'+t~~~~,~;-,~.(. .... JIf permeabIlity: of -10~1 cm/sec' or higher, the normal radnis>of-z'tlifluenœ:'ôf,';eu"èüö!í well is approximately 25 feet. ' Currently, there is not enough field data available to calculate an accurate permeability, During the completion of the characterization, anac!U{lI-Jièld perll,!~~il.!W~::\VØ~ldf',bet obtained using a pump test or a core study,' When'a field permeability;'ú¿;ôbtáinedl' calculations may be performed to define the radial influéi1ce of the>våpot~;'êxúacµòn~' wells: These :cålculations would encompass Darcy's radial' flow - equaûon ·'·còtrècied:.fot gaseous fluids. 3.1 Soil Borings Depth and Location Borings VE-l-and VE-2 would be used to assess the_ vertical contaminatioìi'in::ìhe areas': of B2 and B4, Borings VE-3 and VE-4 would be used to assess both, vertical' and" horizontal soil impaction as shown on Figure 2: Additionally, these locations have been chosen to allow for conversion to vapor extraction wells and subsequent YES connection, Design characteristics of the Thorne Environmental YES indicate vapor extraction wells located on 25 foot centers, in sandy soils with high vapor permeabilities, will allow for efficient soil remediation. Soil boring depths would be approximately 140 feet or 5 feet below the last detected level of contamination, Soil samples would be collected at five foot intervals from the surface to total depth, This sampling interval is necessary to evaluate the extent and concentration of the soil contamination, Accurate definition of the extent and concentration of soil contamination would provide for a more efficient YES design, . 3.2 Boring Methods The borings would be advanced using a Ingersoll Rand 111100 rig, or equivalent{ with: a 10" hammer action, and 8"or larger hollow stem continuous flight auger -in accordance with ASTM Method D 1452-80 for soil investigations and sampling by auger borings, The auger would be steam cleaned prior to drilling each boring. The lithology and other pertinent data would be recorded on a field boring log· in accordance with ASTM Method D 2488-84 for visual description and identification of soils, Borings would be logged by or under direct supervision of a California Registered Geologist and/or Civil Engineer. Cuttings and other spoil from the borings would be place in 55 gallon drums and treated while remediating Site II, 6 .t7 , 3.3 Soil Sampling Soil samples would be collected through the auger in 2-inch brass sleeves driven in a split spoon sampler by a 140 pound hammer with a 30-inch drop in accordance with ASTM Methods 0 1586-84 for split-barrel sampling of soil and 0 1587-83 for thin-walled tube sampling of soils, The brass sleeves and sampler would be steam cleaned prior to each use, Soil samples would be driven at five foot intervals, The blow counts, recovery, and lithology would be recorded on field logs. Lithology would be described in accordance with ASTM procedure 02488-84 (Standard Practice for Oescription and Identification of Soils), One brass sleeve with soil from each interval would be capped, sealed, labeled in accordance with EP A protocols, recorded on a chain of custody form, placed in a cooler at 4 degrees centigrade or less, and transported to a California Certified laboratory with the chain of custody for the specified analyses, Selected samples would be analyzed and the other samples would be held for fourteen days for further analyses if necessary, 3.4 Soil Analyses The soil sample would be analyzed by Med-Tox and Associates Laboratories, a California State Certified Laboratory in accordance with state guidelines and EP A protocols, The samples would be analyzed for total petroleum hydrocarbons (TPH) and benzene, / -, toluene, xylene, and ethyl benzene (BTXE) using EPA methods 8015 (modified), , ,t- t:..J . , 4,0 Installation of Vapor Extraction Wells and Manifolding for YES Operation Each vapor extraction well would be constructed as shown on Figure 3, Casing of the monitoring wells would consist of Schedule 40, factory slotted (0,20 inch), four inch diameter (1.0,), flush threaded, PVC pipe, A flush threaded bottom cap would be provided, The slotted section would extend across the contaminated areas, and blank Schedule 40 PVC pipe, flush threaded, would complete the casing configuration, The. annular filter pack would consist of Number 3 Monterey sand. _ The filter pack would be placed from total depth to 3 feet above the slotted interval. One foot of bentonite pellets would be poured above the sand to form a seal: The wellheads would then be surveyed for elevation for future manifolding to the YES system. Cement grout would extend from the bentonite seal to the surface, Well cover boxes ("Christi Boxes") would be set in cement at surface grade, All vapor extraction wells would be manifolded ~ogether using 4" diameter Schedule 40 PVC pipe, The actual manifolding would be accomplished by trenching a 2 foot x 2 foot ditch, installing manifolding in the trenches, covering pipe with native soil, if soil is not contaminated, and compacting the soil. If the excavated soil is contaminated, clean soil should be used for backfill, The contaminated excavated soil would then be moved to Site II for remediation with cuttings and spoils. By installing all manifolding below surface grade, the remediation would have very little impact on any other activities on the property including construction, human habitation, or remediation methods being conducted at Site II, 7 .- 5,0 Explanation of Vapor Extraction System and Preliminary Equipment Specifications There are many advantages of utilizing Thorne Environmental's mobile Vapor Extraction System (VES). This system is used for the cleanup of soil that is contaminated with volatile organic chemicals, Each unit is portable and can be applied to a wide range of hydrocarbon chemicals. This technology is an advantageous alternative for treatment in non-accessible areas, The ºR~I:ation of the system is .appr()vèd,by,.tbe·;:Soµiji'],:~Þüt~:AiI" Quality Management District {(SCAQMD) in California, one of the most rigid in the United States, This process is very cost-effective when applied in its proper geological environment. In most applications, this process will remove volatiles below further action levels thus not requiring more expensive options such as the dig and haul removal of contaminated soils to an off-site disposal site, 5.1 Process Description Extractable hydrocarbon vapor in the contaminated soil is evacuated with the purged air pulled in from the ambient. The ambient air is introduced through ~he air inlet· wellsY adjacent to the extraction wells. Additionally, the extraction wells are used OCèaSionallf as inlet wells, depending on whether the extraction wells are to be operated ':álternately( The hydrocarbon vapor in the inlet air stream to the VES is somewhat diluted by the inlet air which acts as a carrier gas for the hydrocarbon vapor. The.inlet_airandf"vapof flow rate are modulated via an isolation valve.' The vacuum blower is capablc,'of';pulling-' between 100 SCFM at 10 inches of Mercury (inHg) and up to 200 SCFM at Jï5"fííHg<:¡ríi the inlet of the vacuum blower in some cases, The moisture and particulatesl entrained in the inlet air stream are automatically drained and removed from the system via1thel inlet moisture separator. After leaving the moisture separator, the process air, virtually free of dust, is entered into the suction side of the vacuum blower.' The vàcuum blower compresses the inlet air mixture from 15 inHg to a pressure slightly above 0,5 psi!k The outgoing air" stream from the blower is routed through a built-in silencer. which reduces the noise'i' generated during compression down below 85 db" or sometimes lower depending on the site requirement, The heat of compression is removed by an aftercooler installed downstream; of the silencer. The cooling water at a flow rate of about 2 gpm enters the aftercooler at about 78° F, and leaves at about 120° F, The actual flow rate of the cooling water. is modulated by a temperature sensor mounted in the exit air stream at the outlet of the heat exchanger, In some cases, especially for mid-summer operation, an indirect heat, exchange chiller unit is also installed to ensure proper temperature control. The drain valve, downstream of the heat exchanger, automatically removes any condensation which may have occurred during compression and aftercooling, Prior to entering the carbon canister, by modulating the cooling water flow to the aftercooler, the process air stream4 is controlled at 90° F or lower, . In the carbon canister, the activated carbon adsorbs the1 major portion of the hydrocarbons and releases air essentially free of contamination, 8 .' Depending on the site ~equir~ments, a 91!alyti~",cQ~y~t:t~rfor,- an afterbumerf"~ roay-:~bØ' inStalled iö' pla~~"ofth~,carbon canisterl for total hydrocarbon control. The Vapor Extraction System (VES) is also equipped with automatic sensing_ and control devices at the inlet and outlet of the control unit, The Ratfisch"ModeLRS;l02~_F1Df cQn.trQll~r._Wq!\itor.s.~the concentration-òf the hydrocarbon either-at .tbe~irilét'~öt, the~oìitlef' of the coõtroL-unitl It also . records all (IJefhydrocarbon concentration lev.els-in:,PPMVI as long as the VES is in operation. The-~VEStWiItLoperaté'-24'-bours:pèr;'~,day"-fori approximately ·90, _to 180 days7 depending on whether or not the cleanup level has been achieved, 6.0 Treatment Objectives The objective of the remediation is to reduce the level$¡of contaminations to a leve~that is acceptable to KCEHD¡ This may involve developing a risk assessment -ßsing existing toxicological standards. 7.0 Evaluation of Field Data The mitigation of Site I would be complete when the total organic vapor concentration in the impacted area is reduced to the levels stated above. Thorne Environmental would demonstrate that this has been accomplished by advancing a soil boring in the most heavily contaminated area. The boring would be advanced to a depth determined during the completion of the site characterization, Samples! would be collected at 5 foot intervals and analyzed using the same procedures used during completion of the site assessment. The vapor extraction system and operation would be monitored on a biweekly basis. From the data collected from the YES's data logger, mass balance equations would be used to monitor the progress of the vapor extraction, Monthly reports would be submitted to the City of Bakersfield, These reports would detail equipment operations and vapor extraction progress, ' When the necessary amount of contamination has been removed, as determined from the biweekly monitoring, the final exploratory soil boring would be advanced and sampled, 8,0 Decommissioning of Remediation Equipment After remediation is complete, the vapor extraction wells, manifolding, and vapor extraction system would be dismantled, All of the borings would be backfilled with cement and the trenches backfilled and compacted, After the system is dismantled, there would be no evidence of the remediation activities, 9 " 9.0 Site Specific Safety Plan A site specific safety plan would be written for the site. A typical site safety plan would contain: 0 Introduction 0 Site Background 0 Responsibilities of Key Personnel 0 Job Hazard Analysis 0 Risk Assessment Summary 0 Exposure Monitoring Plan 0 Personnel Protective Equipment 0 Work Zone and Security Measures 0 Decontamination Measures 0 General Safe Work Practices 0 Standard Operating Procedures 0 Training Requirements 0 Medical Surveillance Program 0 Record Keeping 0 Contingency Plans 10,0 Sequence of Events/Estimated Time Schedule A sequence of events flow chart and an estimated time schedule for project completion are shown in Figure 4 and Attachment A, respectively, t 1.0 Reporting When the vertical and lateral extent of the contamination is fully defined, a preliminary report would be submitted to the City of Bakersfield, This report would include, but not be limited to, methods, laboratory analysis, fully documented with complete details of testing protocols, as well as, all applicable QA and QC procedures and chain of custody documentation, recommendations, and conclusions, 10 i When the remediation process is completet a final report would be submitted to the City of Bakersfield. This report would include all remedial field operationst analytical datat and final conclusions, T .lsk II - Remediation of Site II Our proposed scope of work includes the criteria described in the RFP (February 1989) prepared by Mr, Ralph Huey of the City of Bakersfield Fire Department. We propose to provide the following: o Introductory Data o Regulatory Liaison o Installation of Vapor Extraction Well o Completion of Vapor Extraction Well/Manifolding for VES operation o Explanation of Vapor Extraction System and preliminary equipment specifications o Treatment objectives o Evaluation of mitigation o Decommissioning of remediation equipment o Site specific safety plan o Sequence of events/Estimated timè schedule o Reporting The following sections would detaiJ our proposed scope of work: 1.0 Introductory Data Introductory data would provide information pertaining to the site specific information and will include: o Site name o Site location, including a map showing relationship to highwayst streetst and nearby community facilities, 11 i . o A brief synopsis of the site characterization performed by W,H, Parks & Associates, o Site map of the future use of the property as the 'Homeless Shelter', 2.0 Regulatory Liaison Thorne Environmental proposes to represent, as an independent consultant, the City of Bakersfield at meetings with the Kern County Environmental Health Department (KCEHD) and the Kern County Air Pollution Control District (KCAPCD), The purpose of these meetings is to develop a clear understanding of the vapor extraction system design and operation, A workplan would be prepared and submitted to the KCEHD, The workplan is a formal document that establishes the methods to be employed in the implementation, installation, and operation of the vapor extraction system (YES), The workplan will include the following: o Purpose o Project Scope o Schedule o Location and depth of vapor extraction well o Methods of .Drilling o Installation of vapor extraction well o Vapor extraction system design and operation o Facility History o Project Background o Site specific health and safety plan o Personnel The treatment objectives of the vapor extraction would also be negotiated with the KCEHD. A permit would be filed with the KCAPCD for the operation of a vapor extraction unit. All necessary documentation would be provided to the KCAPCD as required by the permitting process. 3,0 Installation of Vapor Extraction Well Following approval of the workplan by the KCEHD, Thorne Environmental would begin 12 " -, actual field operations, After complete review of the letter to Mr, George Sweet from W.H, Parks & Associates, Thorne Environmental understands that the vertical and horizontal extent of the contamination plume has been completely characterized,Tliôfi1ef Environmental proposes to- drjl1.~ª..Vf.~,I,,,*"yg:~~:.~~þ-º~:·,01Ì':Figure sf ~~, well woulq be completed _~ ~ 'y~p!->r extraction weU'_~f!iîc~ºiLp~Ì'm~_~þility o~;}f}%~~~~~:highe', the normal radius of mfluence of each, extractiOn welllsapproXlmately 2S feetl: Currently, there is not enough field data available to calculate an accurate permeability. During the completion of the characterization (Site I), an actual field perméability would' be obtained,~ When a field permeability is obtained, calculations may be performed to define the radial influence of the vapor extraction wells, These calculations would encompass Darcy's radial flow equation corrected for gaseous fluids, 3.1 Soil Boring Depth and Location Boring VE-5 ¡would be advanced in the center ·of the contaminated arew'·as shown in Figure 5, This location would allow for a 25' radial influence around the vapor extraction well during YES operation. Soil boring depth would be approximately 40'. 3.2 Boring Methods The borings would be advanced using a Mobile B-53 rig, or equivalent, with a 10" or larger hollow stem continuous flight auger. 4,0 Completion of Vapor Extraction Wells and Manifolding for VES Operation The vapor extraction well (VE-5) would be constructed as shown on Figure 3, Casing of the vapor extraction well would consist of Schedule 40, factory slotted (0,20 inch), four inch diameter (I.D,), flush threaded, PVC pipe, A flush threaded bottom cap would be provided, The slotted section would extend aèross the contaminated areas, and blank Schedule 40 PVC pipe, flush threaded, would complete the casing configuration, The annular filter pack would consist of Number 3 Monterey sand. The filter pack would be placed from total depth to 3 feet above the slotted interval. One foot of bentonite pellets would be poured above the sand to form a seal. The wellhead would then be surveyed for elevation for future manifolding to the YES system, Cement grout would extenlÍ from the bentonite seal to the surface. A well cover box ("Christi Box") would be set in cement at surface grade, The vapor extraction well would be manifolded to the vapor extraction system in Site I using 4" diameter Schedule 40 PVC pipe, The actual manifolding would be accomplished by trenching a 2 foot x 2 foot ditch, installing piping in the trenches, covering pipe with native soil, if soil is not contaminated, and compacting the soil. If the excavated soil is contaminated, clean soil should be used for backfill. The contaminated excavated soil would then be moved to the area reserved for Site II for remediation of cuttings and spoils, By installing all manifolding below surface grade, the remediation would have very little impact on any other activities on the 13 property including construction, human habitation, or remediation methods being conducted at Site I. 5.0 Remediation of Cuttings and Spoils The cutting~. fff(~µIf the site' characterizations and any' spoils from excavation W'óma~ bet treated in an above ground vapor extraction gallery.::! The cuttings and spoils should be spread on ,06 mm visqueneand layered with 0,20 slotted 4":' diaInUer;,S~hedûlëj40'PVQ' pipe, All piping should be manifolded together at one~pŒ', The _~e~ûreg@U~tyÄvoul(L be covered with _ ,060. mm visquene.; The maintpanifold::;\vbái&' then De~~~B~é'cte--<V (beneath surface grade) to the manifold from VE..5 - to the,' VES c located:: ori,-Site-~i.f 6.0 Explanation of Vapor Extraction System and Preliminary Equipment Specifications The actual vapor extraction system used for Site I remediation would, be used~ simultaneously at Site II. There are many advantages of utilizing Thorne Environmental's mobile Vapor Extraction System (VES), This system is used for the cleanup of soil that is contaminated with volatile organic chemicals. Each unit is portable and can be applied to a wide range of hydrocarbon chemicals, This technology is an advantageous alternative for treatment in non-accessible areas, The operation of the system is approved by the South Coast Air Quality Management District (SCAQMD) in California, one of the most rigid in the United States, This process is very cost-effective when applied in its proper geophysical environment. In most applications, this process will remove volatiles below further action levels thus not requiring more expensive options such as the dig and haul removal of contaminated soils to an off-site disposal site. ' 6,1 Process Description Extractable hydrocarbon vapor in the contaminated soil is evacuated with the purged air pulled in from the ambient. The ambient air is introduced through the air inlet wells adjacent to the extraction wells, Additionally, the extraction wells are used occasionally as inlet wells, depending on whether the extraction wells are to be operated alternately, The hydrocarbon vapor in the inlet air stream to the YES is somewhat diluted by the inlet air which acts as a carrier gas for the hydrocarbon vapor, The inlet air and vapor flow rate are modulated via an isolation valve. The vacuum blower is capable of pulling between 100 SCFM at 10 inches of Mercury (inHg) and up to 200 SCFM at 15 inHg at the inlet of the vacuum blower in some cases, The moisture and particulates entrained in the inlet air stream are automatically drained and removed from the system via the inlet moisture separator, After leaving the moisture separator, the process air, virtually free of dust, is entered into the suction side of the vacuum blower, The vacuum blower compresses the inlet air mixture from 15 inHg to a pressure slightly above 0,5 psig, The outgoing air stream from the blower is routed through a built-in silencer which reduces the noise generated 14 during compression down below 85 db, or sometimes lower depending on the site requirement. The heat of compression is removed by an aftercooler installed downstream of the silencer, The cooling water at a flow rate of about 2 gpm enters the aftercooler at about 78° F, and leaves at about 120° F, The actual flow rate of the cooling water is modulated by a temperature sensor mounted in the exit air stream at the outlet of the heat exchanger, In some cases, especially for mid-summer operation, an indirect heat exchange chiller unit is also installed to ensure proper temperature control. The drain valve, downstream of the heat exchanger, automatically removes any condensation which may have occurred during compression and aftercooling. Prior to entering the carbon canister, by modulating the cooling water flow to the aftercooler, the process air stream is controlled at 90° F or lower. In the carbon canister, the activated carbon adsorbs the major portion of the hydrocarbons and releases air essentially free of contamination, Depending on the site requirements, a catalytic converter, or an afterburner, may be installed in place of the carbon canister for total hydrocarbon control. The Vapor Extraction System (VES) is also equipped with automatic sensing and control devices at the inlet and outlet of the control unit. The Ratfisch Model RS-I02 FID controller monitors the concentration of the hydrocarbon either at the inlet or the outlet of the control unit. It also records all the hydrocarbon concentration levels in PPMV as long as the YES is in operation. The YES will operate 24 hours per day, for approximately 90 to 180 days depending on whether or not the cleanup level has been achieved, 7,0 Treatment Objectives The objective of the remediation is to reduce the levels of contaminations to a level that is acceptable to KCEHD, This may involve developing a risk assessment using existing toxicological standards, 8,0 Evaluation of Mitigation The mitigation of Site II would be complete when the total organic vapor concentration in the impacted area is reduced to the levels stated above, Thorne Environmental would' demonstrate that this has been accomplished by advancing a soil boring" in the most heavily contaminated area. The boring would be advanced to a depth of 40'; Samples' will be collected at 5 foot intervals and analyzed using the same procedures used during completion of the site assessment. The vapor extraction system and operation would be monitored on a biweekly basis, From the data collected from the YES's data logger, mass balance equations would be used to predict the progress of the vapor extraction, Monthly reports would be submitted to the City of Bakersfield. These reports would detail equipment operations and vapor extraction progress, When the necessary amount of contamination has been removed, as determined from the biweekly monitoring, the final exploratory soil boring would be advanced and sampled, 15 9,0 Decommissioning of Remediation Equipment After remediation is complete the vapor extraction well, and manifolding would be dismantled, The boring would be backfilled with cement and the trenches backfilled and compacted, After the system is dismantled, there should be no evidence of the remediation process. 10.0 Site Specific Safety Plan A site specific safety plan would be written for the site. A typical site safety plan would contain: 0 Introduction 0 Site Background 0 Responsibilities of Key Personnel 0 Job Hazard Analysis 0 Risk Assessment Summary 0 Exposure Monitoring Plan 0 Personnel Protective Equipment 0 Work Zone and Security Measures 0 Decontamination Measures 0 General Safe Work Practices 0 Standard Operating Procedures 0 Training Requirements 0 Medical Surveillance Program 0 Record Keeping 0 Contingency Plans 16 11.0 Sequence of Events/Estimated Time Schedule A sequence of events flow chart and an estimated time schedule for project completion are shown in Figures 6 and Attachment A, respectively, 12.0 Reporting When the remediation process is complete, a final report would be submitted to the City of Bakersfield, This report would include all remedial field operations, analytical data, and final conclusions, Thorne Environmental, Inc, appreciates the opportunity to be of service to the City of Bakersfield Fire Department. If you have any questions or would like any further information please feel to call the undersigned at (805) 399-3564, Sincerely, Thorne Environmental, Inc. ~ O:j~ Xandra D, Turner tiJr 'ect Engineer/Project Manager ".~ : ... , Phil Goalwin Operations Manager/Senior Hydrogeologist J~ 0:JUvLrIW j»- C¡K ~ John Wilson & Associates XDT:PG:JW:vm 17 " .. " , ~ ~ L ,. ~. / .. \,'. -f '- - )-- " </ 'j,' , ., ,( / f )" ~l' .~.. ( -- -', -- ...;~ r '-.. ~ ... , if- \, ."Í '.. \:: '.<. ~ . '.' -, ) ¡ \ ¡ ~ J ~ " \ ) '. r oCt -~ . . .:) --.-- " ì"' ~ .'J -, \, ~' , ì , " ,- , '. ./ ',. ,." i :." , ¡ ; - , I. , , ) " -~ " ;' " I ',' 1;- '. . \. ..:.- '\.- 'c v - ~; ~' ESTIMATED COSTS .' ESTIMATED COSTS SITE I A, Remedial Workplan Preparation $ 3,300,00 (Flat Rate) Total Workplan Preparation $ 3,300.00 B. Drilling 1. Drilling Rig 96 hours ~ $250/hour $ 21,120.00 2, Mobilization Flat Rate 3,000,00 3, Technician 96 hours ~ $40/hour 3,840.00 4, Hydrogeologist 96 hours ~ $75/hour 7.200,00 Total Drilling $ 35,160.00 C. Laboratory Analysis 4 wells x 12 samples = 48 samples 1. TPH 48 @ S50/sample S 2,400.00 2. BTX & E 48 ~ $50/sample 2.400.00 Total Laboratory Analysis $ 4,800.00 D, Preliminary Report Preparation 1. Senior Hydrogeologist 30 hours ~ $75/hour $ 2,250,00 2. Draftsperson 16 hours ~ $40/hour 640.00 3. Technical Typist 16 hours @ $20/hour 320,00 Total Preliminary Report Preparation $ 3,210.00 E. Design of Vapor Extraction System 1. Project Engineer 20 hours ~ $75/hour $ 1,500.00 2, Senior Hydrogeologist 10 hours @ $75/hour 750.00 3. Draftsperson 10 hours @ $40/hour 400,00 4. Technical Typist 10 hours @ $20/hour 200,00 Total Design $ 2,850.00 18 F, Installation of Vapor Extraction Wells and Manifolding 1. 4" I.D, 0,020 slotted PVC (approximately 100' per well) 400' @ $7.29/foot $ 2,916,00 2, 4" I.D, Blank PVC (approximately 40' per well) 160' @ $7.07/foot 1,131.20 3. #3 Monterey Sand (approximately 90 sacks per well) 360 sacks @ $4.00/sack 1,440,00 4, Bentonite 4 sacks @ $9,57/sack 38,28 5, Cement 30 sacks @ $10,OO/sack 300.00 6. Well Heads (1 per well) 4 @ $4001 eách 1,600,00 7. Christi Boxes (1 per well) 4 @ $150/well 600,00 8. Manifolding 200' @ $7,07/foot 1,414.00 9. Labor Manifolding 4.000.00 Total Installation $ 13,439.48 G. Use and Installation of Vapor Extraction System 1. Installation of YES $ 3,000,00 2, Lease of YES $7,000 per month for 6 months 42.000,00 Total VES/lnstalJation/Operation $ 45,000.00 19 H, Decommissioning of Remediation $ 10.000,00 Total Decommissioning $ 10,000.00 I. Evaluation of Mitigation 1. Drilling a. Rig 11 hours @ $250jhour $ 2,750,00 b. Mobilization Flat Rate 700.00 c. Technician 8 hours @ $40jhour 320,00 d, Hydrogeologist 8 hours @ $75/hour 600.00 2. Laboratory Analysis a, TPH 12 samples @ $50/sample 600,00 b, BTX&E 12 samples @ $50/sample 600.00 Total Evaluation $ 5,570.00 ], Final Report Preparation 1. Engineer 40 hours @ $75 jhour $ 3,000.00 2. Hydrogeologist 40 hours @ $75/hour 3,000.00 3, Draftsperson 30 hours @ $40jhour 1,200.00 4. Technical Typist 20 hours @ $20/hour 400.00 Total Report Preparation $ 7,600.00 SITE I TOTAL ESTIMATED REMEDIATION COSTS , 130.929.48 20 ESTIMATED COSTS SITE II A. Remedial Workplan $ 3,300,00 (flat rate) Total Workplan Preparation $ 3,300.00 B. Design of Vapor Extraction System 1. Project Engineer 10 hours @ $75/hour $ 750.00 2, Senior Hydrogeologist 5 hours @ $75/hour 350.00 3. Draftsperson 10 hours @ $40/hour 400,00 4. Technical Typist 5 hours @ $20/hour 100.00 Total Design $ 1,600.00 C. Installation of Vapor Extraction Well & Gallery 1. 4" I.D, 0,020 slotted PVC 40' @ $7,29/foot $ 291.60 2, 4" I.D, Blank PVC 10' @ $7.07/foot 70.70 3. #3 Monterey Sand 20 sacks @ $4,OO/sack 8Q.00 4. Bentonite 1 sack @ $9.57/sack 9,57 5. Cement 5 sacks @ $10.00 50.00 6. Well Head 1 @ $400/well 400,00 7, Christi Box 1 @ $150/well 150,00 21 8, Vapor Extraction Gallery 2,000,00 9, Manifolding a, 4" I.D, PVC Pipe 30' @ $7,07/foot 2,121.00 b, PVC connections 500.00 to. Labor for Manifolding and Gallery 4.000.00 Total Installation $ 9,672.87 D. Vapor Extraction Operation 1. If performed in conjunction with Site I remediation N/C 2, If Thorne performs Site II remediation $ 18,000.00 $3,000 per month for 6 months Total Vapor Extraction Operation $ 18,000.00 E. Decommissioning Remediation System $ 5,000.00 Total Decommissioning $ 5,000.00 F, Evaluation of Mitigation 1. Drilling a, Rig 5 hours @ $105/hour $ 525,00 b, Technician 5 hours @ $40/hour 200,00 c. Hydrogeologist 5 hours @ $75/hour 375,00 2, Laboratory Analysis a, TPH 4 samples @ $50/sample 200.00 b, BTX&E 4 samples @ $50/sample 200,00 Total Evaluation $ 1,500.00 G, Final Report 1. Engineer 30 hours @ $75/hour $ 2,250.00 2. Hydrogeologist 10 hours @ $75/hour 750,00 22 3, 4. Draftsperson Technical Typist 20 hours ~ $40/hour 20 hours ~ $20/hour 800.00 400.00 Total Report Preparation $ 4,200.00 SITE II TOTAL ESTIMATED REMEDIATION COSTS $ 25,272.87 IN COmUNCTION WITH SITE I SITE II TOTAL ESTIMATED REMEDIATION COSTS $ 43,272.87 WITHOUT SITE I REMEDIATION ESTfMA TED COSTS SITE I & SITE II $ 130,929.48 25,272.87 $ 156,202.35 SITE I SITE II -- TOTAL 23 " -- r ; " ,- j '- \ f) t.. . ' ( . r"/ - -'. / / ) ~ \ 0, ( l -" ,'/,,- '- ' ,,\ " , ", ) . , \j '. . ,.to :... : ". (; ...-!: " j'~ - ' ( ~-' ,,1 -I , , " '¡-: " ", .' i ,: Z-' .! :') A,' .... t ì t.'.' >. ".f " , \ \ ,~ - , . " ..,-.,. ... ¡. ?1· -' ,L' " J, , ¡ I' :- ( r' ,,) '- ./ , 1:0:, ,:,,' ¡;: ',-- d, \.>-, \ 1"1 ,l " 'J¡ ~ f> {. ~ ..r 'I} FIGURES - I ' , ,'f-. , ' I i I ! I i ¡ , ¡ I I I I i, ~- I j , - E CALIFORNIA AVE. ----- UNDER CONSTRUCTION Q; Q; (; § ~ . Ç¡: > 10( Z o E-< C-' Z H ::c U'J 10( ~ HORNE ENVIRONMENTAL SITE LOCATION MAP FUTURE HOMELESS SHELTER PROPERTY BAKERSFIELD, CALJF. t ¡ FIGURE 1 .. r----------------, lœB 5 I I · I I .. 41:) · I VE:..} · '-~~ .,,~. I FORMER 1,000 GAL. · GASOLINE TANKS I '-' · I B 3 · .' APPROXIMATE · · r DISPENSER ISLAND LIMITS OF I REMOVED · EXCAVATION", I · ~ · ,: 0.1' I I B 4 I · I I I I I I I' · N L _...I L_..J · .1 I .. VE 2- j I I · · · .~VE· 3: · I I I · I · I · I .. I I I I i! I · I I I ¡ : ì I I I I I I I I I ! I I 0 10 20 FT I I , I I I SCALE I I I I LEGEND I I I I ~ SOIL BORING I I LOCATION I ~B 6 I L_______~______ _.J . CHARACTERIZATION /VAPOR EXTRACTION o EXISTING BUILDING -HORNE ENVIRONMENTAL FUTURE HOMELESS SHELTER fiGURE PROPERTY BAKERSFIELD, CALIF. 2 " GROUND SURFACE I : fa SURFACE GRADE .............. .............. ............. ................ ............... .............. ............. '.:.:-:.:.:.: ............ ¡ ¡ I ì i ¡ I I , ¡ i / l' I...,. .....1 .-.... -~ 3' :ONT AMINA TED SOIL CAP CEMENT GROUT BENTONITE SEAL 4 - INCH DIAMETER SCHEDULE 40 PVC SCREEN PERFORATION SLOT SIZE: 00.2 #3 MONYEREY SAND OR EQUIVALENT SLIP CAP NOT TO SCALE THORNE ENVIRONMENTAL EXTRACTION WELL DETAil FUTURE HOMELESS SHELTER PROPERTY nnTf.'rrn ~Tnf/- BAKERSFIELD, CALIF. FIGURE 3 " FIGURE 4 SEQUENCE OF EVENTS SITE 1 T.E.-W.A, WORLPLAN TO YES AWARDED NO NO FURTHER ACTION - KCEHD - PROPOSAL , ~ YES -- DRILLING COMPLETE SITE CHARACTERIZATION t W YES LABORATORY ANALYSIS INSTALLATION t VAPOR EXTRACTION WELLS Yè.s- PRELIMINARY REPORT ì INSTALLATION MANIFOLDING ~ & VAPOR EXTRACTION SYSTEM IS REMEDIATION NECESSARY NO ,~ FINAL REPORT r SITE -- -- REMEDIATION ~ --. WITH VES - ,~ " DO BTX & E YES -- DRILL ~ AND TPH LEVELS - EXPLORATORY --- EXCEED KCEHD LIMITS BORING \ NO END REMEDIATION \ DECOMMISSION SYSTEM , t FINAL REPORT I ; I i i i j ¡ I Ltl TH NO 6 "".,.. -., -" / " / r;--l \ I ~I TANK I \ I ~I TH ~04 I ~ \ \ ~ I VE 5 1< I \ 81 · I I \ LB.!£~!.J II ''1--_/ SLIGHTLY CONTAMINATED AREA ., TH NO 5 I i ¡ II : I . VAPOR EXTRACTION WELL NO VE 5 o 5FT I , SCALE ¡ -HORNE ENVIRONMENTAL SITE II FUTURE HOMELESS SITE -N- FIGURE 5 FIGURE 6 SEQUENCE OF EVENTS SITE II YES T,E. - W,A. NO WORKPLAN TO KCEHD - - FURTHER AWARDED PROPOSAL ACTION , YES INSTALL VAPOR EXTRACTION WELL ) INSTALL VAPOR EXTP.ACTION GALLERY , INSTALL MANIFOLDING 'TO VES SITE I SITE , REMEDIATION WITH VES -. ~ '~ DRILL EXPLORATORY - DO BTX & E YES BORING AND TPH LEVELS - - EXCEED KCEHD LIMITS 1 NO END REMEDIATION ìl.i DECOMMISSION SYSTEM t FINAL REPORT -, -~ . .~ : ¡ . "- ,~ -.) '. { ", ¡, f, '1.(. ,..\ " I .'(~\ L (. '- \ "- , ;;-. .- 'r..:..~J ~.' "j .. I' \ . ~. / ( -. ,~." F ¡~ '. ''1.. £ .( " ~~ µ .'. ~. /'- , -/.....- " /~. .' 'j '. ) ~., t. -ç<:- " ,-- .-' i;' ) .'.;/ J. I ~. , í .' ~'. .. f .' oj.. ".1 ..( \.:.. , :-", 'I,. .~ >~¡< ." \..' ¡ ,: ....,,-- -¥ .... /- . Æ '). .><. " ..:. ~ J_ J ~ .' ~, 1\ ..-- '. ,-.....::..~: . I. ...·1· I· \.. Jo: '.. . '", \. < . r· ~,' i,'" ¡'.-, I ,"_.' .~\'; --\' _, ~ ~'- ., :t... I " - ....,. \ "It" '.! ,( , . ~¡ .) , \ \ ) ATIACHMENT A ESTIMATED TIME SCHEDULE SITE I Our estimated schedule is summarized below, Description of Work Estimated Time 1. Award of contract for 1st week of May 1989 'Homelss Proposal' 2, Remedial Workplan submitted 3rd week of May 1989 to KCEHD 3, Workplan approval by KCEHD 1st week of July 1989 4. Drilling of Site Characterization/ 2nd week of July 1989 YES well 5, Completion of YES wells 3rd week of July 1989 6, Preliminary Report to City 2nd week of August 1989 7. Permit for YES construction/ 3rd week of August 1989 operation submitted to KCAPCD 8. Manifolding of YES wells 3rd week of August 1989 9, Installation of YES 2nd week of September 1989 10, Begin YES operation 1st week of October 1989 11. Biweekly YES monitoring 3rd week of October 1989 12. Last biweekly monitoring 3rd week or May 1990 13. Final exploratory soil boring 1st week of June 1990 14, Final report to the City 2nd week of July 1990 24 ESTIMATED TIME SCHEDUI~E SITE II Our estimated schedule is summarized below, Description of Work Estimated Time 1. Award of contract for 1st week of May 1989 'Homelss Proposal' 2, Remedial Workplan submitted 3rd week of May 1989 to KCEHD 3, Workplan approval by KCEHD 1st week of July 1989 4. Drilling of YES well 2nd week of July 1989 5, Completion of YES well 3rd week of July 1989 6, Preliminary Report to City 2nd week of August 1989 7. Permit for YES construction/ 3rd week of August 1989 operation submitteð to KCAPCD 8, Manifolding of YES wells 3rd week of August 1989 9. Completion of above YES 4th week of August 1989 gallery 10. Installation of YES 2nd week of September 1989 11. Begin YES operation 1st week of October 1989 12, Biweekly YES monitoring 3rd week of October 1989 13. Last biweekly monitoring 3rd week of May 1990 14. Final exploratory soil boring 1st week of June 1990 15. Final report to the City 2nd week of July 1990 25 I f'- ", r 'r: '>':' ¡. ,,\ ';';-' :/- ." .;'F" ..),.:.,.~)' . , -:-,.' ;" ß- ,.Þ . ,- ( ..:'J. ~- í; '\ - ' ~- " ."< /" ~' -\ - ' I)'" ·t' . \, . \ '- -~~ ., ,- .(Jrc .. .~ ., , ~ -, j. ': " \:\ .:-;. " . '>~\ . ( \. 1/ ,",' ..,w, .. . .... f ~ " .,. -' 1 ( / '\ " ~ , r ì "-- , ,r ¡ , \ _ ~, ," 1 I H' , , .:' j\ ,'" ..j' '. STATEMENT OF QUALIFICATIONS '~ ~1}()RNE ~ ENVIRONMENTAL THORNE ENVIRONMENTAL, INC. STATEMENT OF QUALIFICATIONS 'J THORNE ENVIRONMENTAL, INC, QUALIFICATIONS TABLE OF CONTENTS ~lK)RNE ~ ENVIRONMENTAL DESCRIPTION SECTION NUMBER INTR 0 D U CTI 0 N ...... ......., ........... .........,.. ............, ..,....,..............................,.... I. SER VI CE AREA S ............"...,...............,......,....,......,...,......................,.,....,.".. II, TECHN 0 LOG IES ",.,.., ..,.". ,.",.....,. "...... ." .,. .."".,.. ."". ..""""...,..,.."""... """,. III, PR OJECT LISTING .............'... ............. ............. .....,.........,....,..,......................, IV, BOND IN G AND INSURANCE .........................,......,......,............,..,.........,..... V. R E FE R EN CES ,.,.,.,..."."""".,...",.".,."".".,....""..."",..,...... ......"..",...,,'.....,... VI. (A) TRADE REFERENCES (8) FINANCIAL REFERENCES (C) CREDIT REFERENCES THORNE ENVIRONMENTAL REGIONAL OFFICES LISTING ..... VII, j R1I THORNE œ ENVIRONMENTAL INTRODUCTION SECTION I. ) (j!J THORNE ~ ENVIRONMENTAL THORNE ENVIRONMENTAL, INC. 3651 Pegasus Drive Suite 117 Bakersfield, California 93308 (805) 399-3654 STATEMENT OF QUALIFICATIONS INTRODUCTION Thorne Environmental, Ine, is a multidisciplinary environmental engineering and remediation firm, specializing in the comprehensive design and implementation of various remedial processes for the treatment and/or minimization of hazardous liquid and solid waste (and liabilities) generated by industrial and governmental clients. Thorne Environmental's primary goal is to treat hazardous wastes on-site so that they may be neutralized, removed, destroyed, recovered, or reduced in volume, as well as bring sites and facilities into compliance with pertinent regulations pertaining to the environmental condition, and/or health and safety standards, Thorne Environmental not only provides engineering expertise, but also a vast range of turn-key remedial services and technologies for treatment of large volume waste streams such as those contaminated with industrial solvents, petroleum and other organic products, toxic chemicals and bi-products, carcinogenics, metals and anions, etc, Thorne Environmental, Inc. mobilizes trained professionals and equipment, on very short notice, to assess, plan and manage the implementation of a project. Thorne Environmental, Inc. continues to incorporate professionals with people-oriented skills, innovative technical approaches, and diverse environmental engineering experience into the organization, Each staff member has an extensive background in environmental remediation, project management, engineering, marketing, and regulatory agency negotiation on behalf of clients, Thorne Environmental's management players are Messrs, Maurice W, Gallarda, P.E" President (Principal Engineer), Paul E, Vogelgesang, Executive Vice President (Sr. Environmental Scientist), Rick A. Caporale, R.E.A" Sr. Vice President (Environmental Scientist), Woody Gibson, Sr. Vice President (Director of Business Development), Scott K. Lin, r.E., Technical Director (Chemical Engineer), A, Keith Kaufman, Vice President (Director, Bioremedial Services), and John Thomas, Chief Financial Officer, Thorne Environmental's professional staff includes air pollution specialists, civil engineers, waste water system specialists, remedial action managers, chemists, microbiologists, chemical engineers, and environmental scientists who provide comprehensive/integrated approaches to environmental problems and ecosystem effects. , ~1K)RNE 12 ENVIRONMENTAL Thorne Environmental, Inc. has established four offices to service the surrounding areas, with future plans for further expansion as service needs dictate, o Southern California - Anaheim Corporate Offices o Central California - Bakersfield o Northern California - Hercules o Washington - Seattle, Washington '. ~ 11-CRNE ~ ENVIRONMENTAL SERVICE AREAS SECfION II, '. SERVICE AREAS RiI THORNE CSf ENVIRONMENTAL Thorne Environmental provides services in the following areas: I. ENVIRONMENTAL ENGINEERING o Waste Stream Reduction, Reuse and Recovery o Environmental Planning o Waste Treatment Process and Plant Design o Air and Water Pollution Control o Chemical Engineering Evacuations II. HAZARDOUS WASTE MANAGEMENT o Hazardous Materials Management o Waste Profiling and Permitting o Remedial Investigations and Feasibility Studies (RIfFS) o Regulatory Compliance o Mobile and Fixed Base Remedial Systems Design and Installation o Comprehensive Site Restoration Technologies III. MOBILE ON-SITE TREATMENT o Conglomeration and Separation of Difficult Wastes o Chemical Treatment o Thermal Co'nditioning o Recyclable Products Creation o Filtration IV. GROUNDWATER RESTORATION o Pollutant Transport o Aquifer Restoration o Groundwater 'Management o Watershed Management o Industrial Water Management o Water Remediation V, RESEARCH AND DEVELOPMENT SERVICES o Biotreatability Investigations o Alternative Technologies .. ~1HORNE ~ ENVIRONMENTAL I. ENVIRONMENTAL ENGINEERING CAPABILITIES Thorne Environmental provides engineering expertise for the remedial service approaches previously outlined, In conjunction with these alternative approaches and technologies, Thorne Environmental offers a. wide range of engineering service capabilities to its clients, These environmental engineering services are totally supportive and readily available to all other Thorne Environmental technical applications utilized, Thorne Environmental professionals have been actively engaged in the chemical, sanitary, and environmental engineering disciplines, Serving predominantly the industrial community, project experience has encompassed all aspects of industrial waste stream reduction and management, emphasizing waste volume reduction, Thorne Environmental personnel work closely with industrial clients in process modifications designed to minimize the qm~ntities of wastes produced. These modifications alone often result in significant cost savings due to reduced raw materials demand, increased product yield, and decreased capital and operating expenses for waste disposal costs and liabilities, Thorne Environmental Inc.'s environmental engmeermg group provides the following management services: , 1. Facility compliance audits to evaluate client's status regarding EP A, OSHA, MSHA, and related state regulations (DHS, APCD, RWQCB, etc,), 2. Process review and/or modification design to affect waste load reductions, 3, Improvements to operations and maintenance of existing waste treatment systems resulting in increased treatment efficiency' and/or sludge volume reduction, 4. Research and Development for Best Available Technologies (BAT), 5. Project planning including siting, environmental reconnaissance, community relations, and permit acquisition planning, 6, Expert consultation, testimony, negotiation, monitoring and mitigation compliance. 7. Design, construction, start-up and operation of air contaminant, work place environment, wastewater and solid waste treatment systems. 8. Design, construction and operation of groundwater and soil contamination remedial equipment systems. .It ~1HORNE ~ ENVIRONMENTAL II. HAZARDOUS WASTE MANAGEMENT Management of hazardous wastes may involve complex tasks, With increased emphasis on pollution control, generation of hazardous waste streams and wastewater treatment, previously maintained ideas regarding hazardous waste management are becoming obsolete. In almost every case, effective waste management is favorably cost efficient with short term payback through minimization of generating hazardous waste streams, With the experienced professional engineers and state registered environmental assessors on its staff, Thorne Environmental is capable of performing the following tasks: 1. Program Development for: o Hazardous Waste Management Procedures o Spill Prevention, Control and Counter Measure Plans (SPCC) o Waste Minimization Design and Implementation Plans o Underground Storage Tank Management o Hazardous Waste Facility Design and Permitting 2. Hazardous Waste Reports: o Hazardous Waste Generator (Bi-Annual) Reports o VOC Emission Annual Reports o Annual Disclosure Reports - o Quarterly Waste Disposal Reports o Comprehensive Remedial Action Plan Evaluations 3. Permit Application/Regulatory Requirements: o State, Federal and Local Documentation o Air Quality Management Districts' Equipment Construction and Operation Permits o Sewerage Discharge Permits o NPDES Discharge Permits o Federal EPA Generator Permits o State Waste Treatment Operation Permits :i" " R11lJONE ~ ENVIRONMENTAL III. MOBILE ON-SITE TREATMENT Increased pressure on Industry to reduce its generation of hazardous waste streams has led to the development of mobile on-site treatment systems, With available space for fixed based treatment equipment being limited on facilities, mobile units provide tlexibility in the siting process, Thorne Environmental Inc.'s professional engineers are capable of designing and installing mobile treatment systems for treating waste streams generated by the following industries: o Oil Refineries o Chemical/Petrochemical o Pesticide o Municipalities/Properties/Waste Plants/Landfills o Aerospace o Plating/Metal Refinishing o Architecture and Engineering Firms' Clients o Governmental Agencies o Law Firms' Clients o Real Estate Development Firms' Properties Thorne Environmental's philosophy to mobile on-site treatment is to fit state·of-the·art technology with the practical needs of the client. Mobile treatment systems are designed with the intent of minimizing installation costs and start-up time, Specific modular units are available which allow for efficient expansion in handling increase flow quantities. Thorne Environmental's mobile on-site treatment systems include modules comprised of the following equipment: o Flocculators for Precipitation/pH Adjustment Systems o Thermal Conditioning/Coking o Media Filtration Systems/Ceramic/Membrane Distillation o Vapor Extraction System (VES) o Solid Washing and Separation/Dewatering and Phase Separation o Filter Presses o Sludge Conditioners/Metal Fixation o Chemical Adjustment Systems o Granular Activated Carbon (GAC) Units/Catalyst (YES) Scrubbers o Bioreactor Treatment Systems ...' IiilnaNE ~ ENVIRONMENTAL IV. GROUNDWATER RESTORATION Groundwater contamination is increasingly more commonplace in today's environment. Thorne Environmental's approach to groundwater restoration is to prevent further contamination while restoring the integrity of the groundwater, Thorne Environmental's professional staff will begin design of restoration systems during site assessment phases, This approach reduces costs incurred by clients by separating assessment activities from the restoration design phase. Control of groundwater contamination generally centers around four alternatives as presented below: o Containment of Plume o Removal of Plume Following Removal of the Source o Diversion of Groundwater to Prevent Contamination o Reducing Leachate Formation by Lowering of Groundwater Level Thorne Environmental provides several restoration technologies for controlling groundwater contamination problems. These technologies are presented below: o Groundwater Pumping Extraction Wells for Collect a Plume Injection Wells for Altering Direction of Plume o Subsurface Drains designed to Intercept Groundwater o Low Permeability Barriers to divert Groundwater Flow o In-Situ Biological Treatment, Bioreactor, or Chemical Treatment for removal of Contaminants '" .' ~lHORNE ~ ENVIRONMENTAL Groundwater pumping involves altering the flow direction and/or level of groundwater in order to prevent further migration of a contaminated plume. A typical program used in groundwater pumping may include: o Extraction and Injection Wells o Extraction Only o Injection Only o Subsurface Collection Drains Vertical containment barriers may be used in conjunction with groundwater restoration activities including groundwater pumping, The practice of vertical containment barriers involves utilization of low-permeability cut-off walls or diversions which serve to collect or alter groundwater flow, Thorne Environmental offers the following: o Slurry Walls Soil/Bentonite Mixture Cement/Bentonite Mixture Concrete o Grouted Barriers o Sheet Piling '0 rfi111iOPJ€ ~ ENVIRONMENTAL v. RESEARCH AND DEVELOPMENT Thorne Environmental's Research and Development Division maintains a goal oriented approach to solving environmental problems, The division incorporates three primary steps in addressing the particular problem solution: o Defining the Problem o Evaluating the Impact o Searching for Optimum Solutions Thorne Environmental professionals are continually developing acceptable alternative technologies and improving the technologies to meet not only the client's fiscal parameters, but any technical consideration imposed by regulatory agencies, Thorne Environmental conducts each development program with the goal of implementing the particular technology to an actual remediation project. From evaluating bioremediation alternatives in the firm's biotreatability laboratory to testing and critically examining ceramic ultra, filtration in the removal of chemical constituents from wastewater streams, Thorne Environmental professionals continually look for practical applications, The firm's professional staff interfaces with both Federal and State alternative technology groups in permitting both existing technologies and emerging alternative technologies in solving the simpl~ as well as complex environmental problems, c. ~1HORNE ~ ENVIRONMENTAL TECHNOLOGIES SECflON III. rAt THORNE ~ ENVIRONMENTAL TECHNOLOGIES In order for Thorne Environmental, Inc. to implement its services in the most innovative, timely, and effective manner, the company utilizes the following technologies, 1. MEMBRANE SEPARATION/DISTILLATION: This new technology, the separation of tluids by membrane distillation, is used for the separation of industrial solvents from water and the cleaning of groundwater contaminated by industrial waste discharges, The advantages of using this technology include low energy consumption and the ability to retain "aromatics" or other volatiles, 2. THERMAL DESORBER: This technology, heat transfer under reduced atmospheric conditions, is used for silicate processing, clarification, exemptic coking of petroleum related waste, removal of halogenated hydrocarbons, and removal of petroleum hydrocarbon vapors from resulting contaminated soils related to leaking tanks, spills, pits, ponds and lagoons, 3, PHASE SEPARATION/SOLID WASHING SYSTEMS: These mechanical decanter units are designed to aid in conglomeration and separation of difficult wastes, utilizing three phase centrifuge systems with capabilities of pre and post chemical treatment and heat conditioning, as well as high and low frequency sound waves, The advantages that this technology offers is the production of recyclable products of liquid/solids separation, One unit can process 1,000 barrels per day, 4. CERAl\UC ULTRA FILTRATION: This technology is used for hydrocarbon filtration, separation, and biological filtration, It is comprised of six (6) major proprietary units, with each unit capable of removing certain water contaminants, The system can be mobile or permanently installed on a particular site, 5, VAPOR EXTRACTION SYSTEM (V,E.S.): This system is used for the cleanup of soil that is contaminated with volatile organic chemicals. Each unit is portable and can be applied to a wide range of hydrocarbon chemicals, This technology is an advantageous alternative for treatment in non-accessible areas, The operation of the system is approved by the South Coast Air Quality Management District (SCAQMD) in California, 6. IN-SITU AND ON-SITE BIOREMEDIATION: This type of technology relies on the utilization of microorganisms and appropriate nutrients for the remediation of soil and water contamination, Biodegradation is appropriate for environments contaminated with organic compounds while biotransformation is directed toward detoxification of certain inorganic contaminants, such as selenium and nitrates, Bioremedial technology is cost effective and technically feasible for small projects to multimillion dollar superfund sites, R1I1}()RNE ~ ENVIRONMENTAL 7. SILICATE FIXATION: This technical application applies to the utilization of silicate products, with some chemical treatment, to fix the total toxicity resulting from organic (hydrocarbon and petroleum sludge) products and heavy metals contamination. Primary advantages include solidifying hazardous waste materials and spill control. Other benefits of silicate fixation include the reduction of leachability of EP toxicity in landfills to groundwater and then to potential drinking water sources, 8. ~IOnILE CHEMICAL TREATMENT SYSTEM: This system is a chemical and physical treatment process for aqueous based wastes, It is a multi-stage process system that removes contaminants such as acids and alkalis, heavy metals, hydrocarbons/oils, organic chemicals, mercaptans, sulfides, cyanides, BOD/COD, pesticides, and solvents, The Mobile Chemical Treatment System is trailer mounted and has a laboratory trailer, a portable sludge accumulation tank, a trailer mounted plate and frame filter press, and containers for dry-stabilized solids after dewatering. Treatment capacities range from 70,000 to 150,000 gallons per day. This system is fully permitted for operation, 9. TREATABILITY LABORATORY: Thorne Environmental's Technology Development and Waste Treatability Laboratory specializes in the development of hazardous waste minimization and detoxification technologies, The laboratory proviùes technical evaluation of treatment alternatives and feasibility studies, alternative technology evaluation, process evaluation development and design, as well as a full range of analytical seIVices, Laboratory services tailor respective tech- nologies to each client's needs while meeting environmental and regulatory guiùelines. Other support capabilities include Metals Detoxification, Organics Treatment, Pesticide Treatment, Oily Waste Sludge Separation and Treatment, Pond Cleaning and Closures, Dewatering of Sludges and Slurries, and Stabilization Technologies, Thorne Environmental's primary goal is to treat hazardous wastes on-site so that they may be neutralized, removed, destroyed, recovered, or reduced in volume, as well as bring sites and facilities into compliance with pertinent regulations pertaining to the environmental condition, and/or health and safety standards, ... .' ~THORNE ~ ENVIRONMENTAL PROJECf LISTING SECTION IV, '. .~ ~1HORNE ~ ENVIRONMENTAL THORNE ENVIRONMENTAL, INC. PROJECT LISTING Thorne Environmental, Inc. has extensive environmental experience and has provided, or i,s in the process of providing, engineering and remediation services for the following projects, ~ Name of Project Location Amount Date Soil The Austin Company Long Beach $ lOOK 6/88 Water /Soil Carter Hawley Hale Richmond, V A $ 200K 5/88 Chern/Spill Confidential Mar. Del Rey $ 1.4 M 8/88 Haz, Waste Confidential Downey $ 80K 6/88 Mgmt. Water/Soil Confidential . Pasadena $ 400K 12/88 Air Plltn. Confidential Van Nuys $ lOOK 12/88 Haz, Wste, First Interstate Bank Los Angeles $ 2,OM 11/88 Mgmt. Water /Soil Metro Cleaners Los Angèles $ 90K 12/88 Water/Soil Overland Avenue Los Angeles $2lOK 12/88 Mobile Trt. Tosco Corporation Martinez $ l.OM 12/88 Tank Rmvl. Tosco Corporation Martinez $ 35K 5/88 RI/FS (*) Xtron Corporation Blanding, UT $ 2-4M 1990 Expert Fadem, Berger & Los Angeles $ IOK 6/88 Witness Norton Water/Soil Chevron Oil Company Ventura $ 500K 11/87 Soil American Linen Co, Los Angeles $ 400K 6/89 Air Aerojet Corporation Los Angeles $ 75K 6/88 ---------- ... '0 ~lK)RNE ~ ENVIRONMENT Al Closure NCR Corporation San Diego $ 20K 11/86 Haz Waste Air Products & Chemical Oceanside $ 30K 11/88 Remed. Company Wst Wtr / Air Athens Corporation Oceanside $ 50K 2/87 Pollution Env, Audit Bonanza Aluminum Co. Fontana $ lOK 5/87 Air Plltn, Fleetwood Industries Riverside $ 15K 7/87 Soil/Grd Sammis Company Ventura $ 225K 8/87 Wtr.Remed, Soil Remed Fleetwood Industries Riverside $ 80K 10/85 Chern Rmd, AM Cyanimide Covina $ 20K 6/86 Soil Remed Western Exterminators Los Angeles $ 114K 6/88 Soil Remed Confidential Los Angeles $ 150K 6/88 Grd, Water Soil Remed Confidential Torrance $ 90K 10/87 Mobile Dept. of Health Svs, Sacramento $ 185K 10/86 J ncnrtn. Demo Soil Confidential Los Angeles $ 40K 12/87 ßioremed. (*) Remedial Investigation/Feasibility Study ;~ ~ Tf-K:)RNE ~ ENVIRONMENTAL BONDING AND INSURANCE SECTION VII. ~ ~lK)RNE ~ ENVIRONMENTAL THORNE ENVIRONMENTAL, INC. LIABILITY INSURANCE AND BONDING Thorne Environmental, Inc. evaluates its insurance coverages on a daily basis. The organization is in a consistent mode of upgrading its insurance and bonding coverages to accommodate the needs of its clients and their corresponding projects. Insurance Coverages Limit General Liability Insurance $ 2,000,000 Worker's Compensation Insurance $ 1,000,000 Clerical Worker $ 1,000,000 Professional Liability $ 1,000,000 Automobile Liability $ 1,000,000 Excess Liability $ 1,000,000 Bonding When required, Thorne Environmental will provide all necessary bid guarantees, performance bonds, labor and materials bonds, and payment bonds, These bonds will be in compliance with all applicable State and Federal regulations, and will be issued by a reputable bonding company of good standing in the United States, ~ ~TIiORNE ~ ENVIRONMENTAL REFERENCES SECTION VIII, ~l}[)RNE [2 ENVIRONMENTAL THORNE ENVIRONMENTAL, INC. REFERENCES A. TRADE REFERENCES: 1. Regulatory Agencies: (a) Mr, David Leu Alternative Technology Division Department of Health Services State of California Sacramento, California (916) 324-1807 (b) Mr. losh Workman Los Angeles Regional Water Quality Control Board State of California Los Angeles, California (213) 620-5665 (c) 'Ms, Stacey M.K. Ebiner South Coast Air Quality Management District EI Monte, California (818) 572-6318 2. Client References: (a) Aerojet Ordnance Company 9236 E, Hall Road Downey, California 90241 (213) 923-7511 (b) CitiCorp 3100 Ocean Park Blvd, Santa Monica, California 90405 (213) 450-9111 (c) Groveman and Young Attorneys at Law 3580 Wilshire Blvd" Suite 1705 Los Angeles, California 90010 (213) 388-8861 .- rjlJ THOIH: ~ ENVIRONMENT AL (d) Western Exterminator 1732 Kaiser Avenue Irvine, California 92714 (714) 261-2440 (e) Carter Hawley Hale 1600 N, Kraemer Blvd, Anaheim, California 92806 (714) 520-1385 (f) Astech 3030 S, Red Hill Avenue Santa Ana, California 92711 (714) 250-8717 (g) Teledyne Cast Products 4200 W. Valley Blvd, Pomona, California 91766 (714) 595-2252 (h) Crane, Hydro-Aire 3000 Winona Avenue Burbank, California 91510 (213) 842-6121 (i) American Linen Supply Company 47 S. 9th Street Minneapolis, Minnesota 55402 (612) 371-4274 U) The Seeley Company 20300 S, Vermont Avenue, Ste, 200 Torrance, California 90502 (213) 538-3182 (k) Witco Corporation 10100 Santa Monica Blvd, Suite 1470 Los Angeles, California 90067 (213) 277-4511 (I) Mobil Oil Corporation 3700 W, 190th Street Torrance, California 90509 (213) 775-3563 · ~noRNE ~ ENVIRONMENT AL (m) J,C, Schumacher Company Air Products Division 1991 Village Parkway Suite 140 Encinitas, California 92024 (619) 632-1878 (n) NCR Corporation 5040 Shore ham Place San Diego, California 92122 (619) 457-1800 (0) lIT Gilfillan 7821 O'Ryan Avenue Van Nuys, California 91409 (818) 988-2600 (p) Rohr Industries 8200 Arlington Avenue Riverside, California 92503 (714) 351-5400 (q) Ciba-Geigy 5115 E. LaPalma Avenue Anaheim, California 92807-2018 (714) 779-9000 (r) TOSCO Corporation Avon Refinery Martinez, California 94553 (415) 228-1220 ~ -~ Other Trade ReferenceS: (a) U.S, Navy Camp Pendleton, California (b) U,S. Naval Shipyard Long Beach, California (c) Bonanza Aluminum Fontana, California (d) Framingham Municipal Incinerator Framingham, Mass, (e) Saint Ann Pulp & Paper Woodstock, New Brunswick, Canada (f) Borden Chemical Division Bainbridge, New York (g) PPG Industries Lexington, North Carolina (h) IMC Fort Lauderdale, Florida (i) Fall River Municipal Incinerator Fall River, Mass. ~~ ~ ENVIRONMENTAL ~ . ~lHORNE ~ ENVIRONMENTAL THORNE ENVIRONMENTAL, INC. REFERENCES B. FINANCIAL REFERENCES: National Bank of Long Beach Orange County Branch Contact: Cheryl Wallach (714) 432-1560 ~ >- ~1HORNE ISf ENVIRONMENTAL THORNE ENVIRONMENTAL, INC. REFERENCES C. CREDIT REFERENCES: 1. Marine Shale Processors 110 James Drive West Suite 120 St. Rose, Louisiana 70087 Mr, Ken Hanley (504) 465-3310 2. Advanced Image Systems 23842 Hawthorne Blvd, Suite 101 Torrance, California 90505 (800) 654-8906 3. Coast Communications 3412 Via Oporto Suite 301 Newport Beach, California 92663 Mr. Richard Doss (714) 675·9604 4. Geotechnical Computer Applications 1727 Mission Road Santa Rosa, California 95405 Mr. Sal Caronna (707) 539-0506 .;: ~l}[)RNE ~ ENVIRONMENTAL THORNE ENVIRONMENTAL REGIONAL OFFICES LISTING SECTION X. ~ .- ~1K)RNE ~ ENVIRONMENTAL THORNE ENVIRONMENTAL, INC. REGIONAL OFFICE LISTING A, THORNE ENVIRONMENTAL, INC. 4887 E, LaPalma Avenue Suite 701 Anaheim, California 92807 (714) 693·1818 B. THORNE ENVIRONMENTAL, INC. 3651 Pegasus Drive Suite 117 Bakersfield, California 93308 (805) 399-3564 C. THORNE ENVIRONMENTAL, INC. 825 Alfred Nobel Drive - Suite "a" Hercules, California 94547-1899 (415) 741-8004 D, THORNE ENVIRONMENTAL, INC. 19730 64th Avenue, West Suite 120 Lynnwood, Washington (206) 672-2428 >, , , '. '-' ~: .,,', . .- , " -~. Î- ~ , ,. 1 '" -\ '-:1), '~', ~" " .>:;,. '. ^, '~~ 'l /\ , ." ./ , ;:J '."1 '. .,/,f,;. :~.'.~;~ \~' r' r.:1;; - ,I" . (._- ;,: ....; '\. . '.I,,~~'.:"'::L_,-' . '~~.' '- ,J ~_,~~- ,,"_. .-- -., ~' '\ ' ".,),~? '~-¡:'f"~i-'.': . '1,-''.';-::-: ')-..:, ,/ ¡.- ~f">. ~ . f. ./ ".\ ;..:'~.. ' t:... ....;... '( .' \ -I I"~ ,<" \,;1. '\ .... 'j ,- / ~. ',' ìt ',- ,', ........:. \ (- ,'...,," f>. ¡"!- , " '\, _c \,~ 1...;.) '. , r Á, : ':..,' \ : . ~~. ":. " l' I ; '1:' ,.": ~_~I:'f~~¡,~,:..~,~ ': ')' " . ~- . .... -'-",) 'j-.\;~~~ . iJ "\C; ,- ". j-, >,\ / f '"/ .,J -" " " , ~ ~I \ 1, , -', , " " \ , '',.\; ¡ ~ I " \ :'!.i r " '\ \... .,,' / '" / '. .;.¡ ; - " J'\';. -..I .~ '- \. '!!' INDIVIDUAL PROFILES ," ORGANIZATION CHART ED HENDRICK SCOTT LIN R.G. , CEG. , P.E. P.E. , PROJECT COORDINATOR PROJECT DESIGN ADMIN, JOHN WILSON., XANDR TURNER P.E. PROJECT PROJECT MANAGER ENGINEER DUANE SMITH R,G. FIELD PROJECT DRAFTSPERSON MANAGER TECHNICAL TYPIST PHIL GOALWIN I SITE HYDROGEOLOGIST TOM GUTCHER GEOLOGIST ANALYTICAL LABORATORY EXPLORATION I DRILLING ,õ: , CURTIS "ED" HENDRIC:Z Principal Consultant Registered Civil Engineer #29,260 Registe~ed Geotechnic~l Engineer #GE002021 Registered Geologist #355ì Certiried Engineering Geologist #1,052 Ed Hendrick is the Principal Consultant and supervises/performs Soil Engineering, Geology and Engineering Geology ror EARTHTEC, Ltd. Ed has a Bachelor or Science degree in Geology rrom the Univers ity of California, Davis, and a Master or Science degree in Geo logical Engineering from the University or Calirornia, Berkeley. He is registered ~vith the State or Calirornia as a Civil Engineer, a Geologist and is certiried as an Engineering Geologist, He is registered in the State of Nevada as a Civil Engineer, In addition, he has both Gèneral Engineer and Water íJell Dri ller Contractor's licenses from the State of California, Prior to entering the consulting rield, Ed was employed by the U.S, Geological Survey (WRD) and Pacific Gas and Electric Company, He has been on the professional starr or a Bay area ri~:n and two local geotechnical engineering consulting firms. Just prior to the formation of EARTHTEC, Ltd., in March or 1981, t:d '.·¡as t he so le proprie t or or: his own so il and geo logical engineering consulting rirm, Ed has been a geotechnical/geological consultant on a wide range or: projects, including earth dams and levees; landfills; residential, commercial, professional, and industrial buildings; churches; roadways; bridges; gas and oil drilling pads/sumps; sloDe stabilitv and stabilization; hazardous ~vaste management; erosion mi tigation; si te seismicity and fault identification/ location; other geologic and soil hazards; sewage t~eatment facilities and laterals; de~vatering; groundwater monitoring; ea rthwork; airports; breakwater s; shopping centers; groundwater deteYminat~on; underground utility vaults; banks; pipelines; bleachers; running t~acks/play fields; _~chools; etc, Also, he has consulted on sites contaminated by hazardous substances, :Y9i~3l1y =21ated to hyd=ocarbons~ ?r21~mi~a~' assessments ~riar t.J const:-...lc::~on, ana .3,~.J..-,.,i,'S, Á , DUANE R. SMITH PROFESSIONAL FIELD Consultant in Geology EDUCATION San Diego State University - Bachelor of Arts, minor in Mathematics - 1972 Major in Geology, REGIST~~TION Registered Geologist, State of California Number 3584 PROFESSIONAL MEMBERSHIP American Association of Petroleum Geologists - Pacific Section EXPERIENCE Practicing geologist in Kern County area Slnce December 1972, Currently working for William H, Park and Associates, in the fields of groundwater resource investigations and geological hazards studies, Other experience includes: 1966-72: Department of Highways and Bridges, Kern County, Assistant Engineer (Highway Inspection), Some of the projects for which I have been a Geologist or consultant include: Groundwater Studies Hest Bakersfield Sewer Study - Kern Council of Governments - Hydrology and Geology portions of report by Carollo/Quad, a joint venture. , Geohydraulic report abandoned Tehachapi Disposal Site - Potential for groundwater contamination by pesticides, Near Surface Water Migration Study - Westside Disposal Farm - Environmental Protection Corporation Sunland Refinery Corporation Water Rights Acquisition - City of Bakersfield - Tenneco In excess of 80 groundwater studies have been performed for numerous clients in the San Joaquin Valley, Mojave Desert, and mountain areas of the Sierra Nevada, Transverse Range, and the Coast Ranges. (10/86) ii .~ Waste Disposal Site Investigations County of Kern - Class ~I Disposal Site Investigations, Boron, California City, Lake Isabella, Buttonwillow, Tehachapi, Hoj ave-Rosamond , Shafter-Wasco, and Arvin, Environmental Protection Corporation - Eastside Disposal Farm. Park, Potter, and Ganong - Westside Disposal Farm, Geysers Project, Union Geothermal Operations - Sonoma County, J & J Class I Disposal Site - Benicia, California, Environmental Impact Reports Environmental Impact Report for California City Cemetary. Environmental Impact Report for Vegetation Management, Dust Control and Improvement and Maintenance of Perimeter Roads on U. S, Naval Weapons Station, Seal Beach, California, Environmental Impact Report for California City Sanitary Landf i ll. Geological Report Class II Disposal Site, California City~ Environmental Setting Report for Richfield and East Coyote Oil Fields, Placentia, California, City of Bakersfield purchase of Tenneco Water Rights, Kern County, Southwest Bakersfield Area - Stockdale Development Corporation, Land Subdivision - Lebec-Fort Tejon Area. Paleontological study for the San Joaquin Nuclear Power Plant Site, transmission lines and substations, Rio Bravo Annexation to the City of Bakersfield, Geological Hazards Studies Kern County Seismic Safety Element Study fer County of Kern, California, 8,000 square miles, 140 quadrangles, Ridgecrest Community Hospital, Ridgecrest, California, Bakersfield Community Hospital, Bakersfield, California. Cerro Coso Community College, Ridgecrest, California, Kern County Community College, Delano, California. Arvin High School, Kern County Union High School District. South Bakersfield High School, Kern County Union High School District, ívasco High School, Wasco Union High School District, McFarland High School, Kern County Union High School District, Shafter High School, Kern County Union High School District. Shafter Continuation High School, K~rn County Union High School District. Studies of Six Separate Campuses for Par.ama Elementary School District, Bakersfield, California, Fault Investigation for various sub-division for rezoning, parcel mapping, building permits, and wind power generating sites, Geological Consultant to Lusich, Lusich, Morales and Associates, Engineering Company, Bakersfield, California. Geological Consultant to Quad Consultants, Visalia, California, Geological Consultant to David R, Brown, Bakersfield, California, Geological Consultant to Challenge Builders, Bakersfield, California. Geological Consultant to Dennis W. DeWalt, Bakersfield, California, ~ Geological Hazards Studies (Continued) Geological Consultant to L, Bruce Nybo, Bakersfield, California. Geological Consultant to Patrick and Henderson, Bakersfield, California, Geological Consultant to Luque and Associates, Bakersfield, California, Geological Consultant to Sequoia Engineering, Bakersfield, California, Geological Consult~nt to Granite Construction Company, Bakersfield, California, Geological Consultant to Simpson-vanCuren, Inc., Bakersfield, California, Geological Consultant to French and Associates, Bakersfield, California, Geological Consultant to Ricket, Ward, and Delmarter, Bakersfield, California. Geological Consultant to John R. Wilson, Bakersfield, California, Geological Consultant to Alta Engineering, Bakersfield, California. Geological Consultant to Russell and Owens, Bakersfield, California. Oil and Gas Investigations Thomas Oil Company Schaefer Oil Company C, D. Draucker Fruitvale Oil Fiel& Waste Water Disposal Facility Charisma Petroleum Company Barling Brothers West Coast Oil Company Hoyt Oil Company Site Characterization Studies Thorne Environmental, Bakersfield, California CALPI, Incorporated, Bakersfield, California Davies Oil Company, Bakersfield, California Precision Engineering, Fontana, California Crown Environmental, Bakersfield, California Cal-Valley Equipment Company, Bakersfield, California Barney's Incorporated, Buena Park, California ~ COMP.-\..l'N POSITION: EDUCATION: BACKGROUND: EXPERIENCE: PRE-THORNE HISTORY: Individual Profile PHILIP GOALl\'lN Project Hydrog~ologist B.S., 19ï9, G~ology, California State University, San Francisco, California M.S., 1982, CaliÎornia State University, San Diego, California Management of Analysis and Interpretation of Geological Data, Management of Environmental Assessment - Underground Storage Tank and Petroleum Hydrocarbon Remediation Projects Extensive experienc~ in analysis and interpretation of geological data, including t\vo years in a supervisory position, Responsible for regulatory compliance issues relating to the subsurface injection of oil field waste, Supervised large petroleum hydrocarbon remediation projects and leaking underground storage tank site assessments~ Fanúliar with solute traI15port hydrogeologic numerical modelling and extensive petroleum reservoir modelling. Supervisory duties have included editing of written work, job assignments, salary and promotÌfmal review, technical input for budgetary review, all aspects of drilling operations, construction of geological cross-sections. fence diagrams, and structure sections, and assimilation of geological, geophysical and paleontological data. 1987·Present 1982-1987 1985-1987 1983-1985 1982-1983 1979-1980 Kleinfetder Erw. Svs., Staff Geologist T ~:caco, Ine" Development Geologist T èxaco, Ine" Sr, Petroleum Geologist Texaco, Inc,. Petroleum Geologist Texaco, Inc" Associate G~ologist SOHIO Petroleum, Assistant Geologist PUBLICATIONS: Abbott, PI.. ed, 1982 Guidebook to the Eocene in San Diego, County, Pacific Section AAPG Guidebook, Í'Q4.0~S9 M.S. 1982 Goalwin, p, Paleomagnetic of Eocene Turbiàites, San Diego, DJifonúa .' j) F.: E ::; un E ,JOHt- R, tJ 1 LSOt· R~ ,;¡ i;. t u· ~ oj C i I) i 1 C-;.. J i f,:lrn iÕl. \j t:<.h En.;! i n€-o:-r' 23270 45Ó5 Edu c~_ t ¡(In C;..l ifQr·ni.... :3t:<.to:- Uni')~r..:.ib', Frt?':no 8.:3" Ci\)i1 Eno;¡ineering, 1'?69 PrQfessiQna1 Experience November 1983 to Present: John R. 'lJ i 1 ·:.on Ci I.) i 1 En';!i neo:-r Sakersfield, Ca1 jfornia Civi I Enqineer/Owno:-r: Principlo:- actiui ties include: ci')i I engino:-ering for cQgener.ation f."cì 1 i ties for Gt?tt:.' Oi I Company; design for various subdivisions in Kern County; design, survey, and soils for scrubber waste di:.po:.a1 faci1 ities in Taft and C.:)a1 inga for Shell Cal ifornia; design, soils and survey for Petroleum tJa·:.te, Inc. I......a·~te dispo~.a1 f.Õl.ci 1 i b', and other ci'.)i 1 engineering functions. Apri I 1'7'77 t,;:¡ Oct':lber 1'?83: Lusich, Lusich and Morales, Inc. 8aKersfield, Cal ifornia Clui I Enqino:-er: Duties included supervision of designers, draftspersons and surveyors for a civi I engino:-ering tlrm. Other ro:-:.pon·:.ibl ¡ties inc1lJded; subdivision planning, design, environmental reports, pub I j,: he:..ring·:" ci')i 1 .engineering de~.ign -;..nd environmental documents were preparo:-d for two waste disposal sites in Kern County, October 1975 to March 1977: Un; ted Surveying and Engineering, Inc. 8.:<.ker·:.f i €-1 d, C.;..l i f,:)rn i.:<. Ci'!il Enqineer../Q....-.aner: Unite-d I..V-:"·:-.;" ,:i'..!il engino:-erin.;¡ firm wi th emphasis in surveying and subdivisions, Othe~ activi ties included ~nv¡ronm€-ntal docum~nt5, soi Is testing and other »go:-neral» services. January 1975 to October 1975: RicKett, Ward & Delmarte~ C i I.) i I En g j n e... r·:- SaKe~sf¡e1d, Cal ¡fo~nia C i I.) ¡IE n q i nee r· : D IJ tie .~ i n I: Iud t? Ij f 0 IJ n d.~ t i .::. n .:<. n .~ ]:.., -: I .:. .;:. f structur~s including field and lab testing for the Cr' 0 .:. .". l):<. I 1 "':;" C.;.. n -:.. I. Per of ':' r m e Ij .;.. I I P h .:<. ':'" .:. I:) fs. Q ì I -:. testing and inl.)estigation ~rom test borings to report '...·Jr- i tin I~ . -Ì!' F'a ~ e _ ,J oh n F:, ¡..J j I ·::.tJn R~=·um¿. August 1972 to January 1973: PicKett, Reaves & Ward C i I.' i I En'3 i n\Õ'er-~ BaKersfield, Cal ifornia Fi¿.ld Enqineer: Responsible for inspection of the Teh.ach.:..p i pipe line proj ec t (C·3. I i f':)rn ¡a Aqueduc t to Tehachapi). Inspections included the following: I/·Je 1 din g, pip e I i n e in':. t:<.l I -3. t i IJn an d c I:)n c I" e t e pI ·3.C eme n t . Oc tobef" 1971 to ,June 1972: kern County Department of Roads & Bridges 8aKer-sfield, California Enqineer: Assisted in the design of various roads, highways and intersections in Kern County. June 1969 to October 1971: Kern County Water Agency BaKers.field, Cal ifornia Enqineer: Assisted in flood analysis of many various locales in Kern County. Performed insp\Õ'ction of levee construction project at LaKe Isabella. Past and Pf"esent Of"qanizations American Society of Civil Engineef"s Kern Aquatics Club, Dif"ector Rio Bravo - Greeley Swim Club, President Kern County Triathlon Association, Pf"esident Kef"n Chapter Cal ifof"nia Council of Civil Engineers and Land Surveyors, Pf"es. i d\Õ'n t Kern County Water W\Õ'll Committee, Chairman Kern County Board of Supervisors Land Use Committee Rosedale General Plan Advisory Commi ttee Kern Chaptef" March of Dimes, Director ~ 1, 0 u:;¡, I i -f i ,:~ t ion:. Attach~d ar~ r~sumes for Gary J. l~ary, R.E.A. No. 00003, Proj~ct Manager and John R. Wilson, R.C,E. 23270, who are the persons who will b e~ .:-:. i ';J n e d tot h e p r C\.j e ': t, .ÕI. I ':' n '~ I...J i t h ': €I ': r eta I' iÕl. 1 and c c'm put e r per·Eonn¿.l. We hav~ a wid~ rang~ of experience as evidenced by the following 1 i:. t of pro j e ': t -~ . Environmental Protection Cl~:.=- 11-1 1.^Ja·:·te Di·:.po-:.a1 3de, Kern County, Ca1 jf.:.rnia. Environmental Impact Report for a "hazardous waste transfer :.t~tic.n" and:..ddition-~l~re~. f,:¡r -:., Cl:..:.:. 11-1 l¡Ja·=-t~ Disposal F,,,,,ci1 it;.- in Kern County, Ca1 ifornia. Process included pub1 ic hearings for condi tional use permits, and engineering plans for construction. PI? tro 1 eum I^J.~-=. te. I nc , Class I, and Class 11-1 Waste Disposal Site, Kern County, Ca1 ifornia. Environmental Impact Report; hydrogeological assessment; soi Is investigations; Ca1 ifornia Regional Water Qual ity Control Board submi ttals and presentations at pub I ic hearings for waste discharge permits; Cal ifornia Department of Health Services submittals and presentations at pub 1 ic hearings for a Hazardous Waste Faci1 ity Per m it; En '-.I i r· ,::m men t30 I PI' .:j t eo I: t ion A';I e n c >' s u bm i t tal -=. (P a I' t 8 )"" n d pub I i c h~arings for a RCRA permi t; engineering design~ construction mon i tor i n';I, qual ì ty -~·=-=.ur~nce./qu.""l i ty control. 8h ell 1"1 in i n c¡ Co. Heap leach Gold Mine, Mo.jave, Ca1 ifornia. c.~ 1 i f or n i.:.. R e ';I i 0 n3. 1 I...J ate r 0 u ."" 1 d ;... Con t I' ,:¡ 1 Boar d,:, u bm i t t"" 1=.:.. n d permj t for "A Report of Waste Discharge - Standard Hi I I Pilot - Scale Projeo:t" en,;;)ineering ,je·=.i.;;¡n ,:¡f 1..<Ja-~te l.Jni t·:s; ':I::¡n·=.trl.Jction moni torin.;;); qu.~l i ty .~:.:.ur.~no:.../qu.~l i ty control. :::: h I? I 1 C:<. 1 i of 0 r n i.:o. Pro due t ion. I n c . C 1:0.:: I I - 1 :3 c rub to e r I.-'.J a·:· t e 0 i: p Co .:. a I F -~ c i 1 i tie:., T:.. f t ,~, C·:.."" 1 i n 9 -a , C.aJjforni,EI, Permi tting for Kern County Conditional Use Permit; permitting for C:.. 1 i f (] r n i:.. I·.J.:<. t e r Q u ."" 1 i t Y' C ':' n t r cl] B 0.3. r d IJJ.:., ':- t e D i .: ': 1"1 a r g e Per m it; S ':::.] i d Waste Permi t; groundwater and soils investigation, C 0:0 n f ide n t i:o. 1 C 1 i I? n t Pesticide Contamination s¡ te A-::es.:ment Pl.:<.n, F.:emedi:<.l In'., e·:.tìgati.~n../Fe:..':.ibi 1 i ty :::tudy, HYdrogeo]ogical Assessment Report; clean up costs estimated at $1,500,00. C l:;t n f i d ¿. n t i:<. 1 C 1 i I? n t 13,:;":.1:0 i neC":1 n t:'.m in,;" t e d ::: ,:) i 1 .:<. n Ij (3 r OIJ n dt., .:<. tel' ~ssessment ?lan, HYdrogeologic:<.1 Assessment Report, Remedial Investigation Plan; clean UP costs estimated at $350,000. 2 I] IJ .3. I i f ¡I:", t i I=' n .:. .;: C I:' n tin IJ e ,j ) .J'õ<. n IJ ."_ r':( 4, 1 '? ::: '7' Conf i den t ¡,,_l In c i n e- r· 'õ<. t i on Cl i ...n t and Wast... Disposal F...c i 1 i i;y Pr~pare f@asibil i ty stlJdY, marKe-t analysis, environmental documents, engineering plans, maKe presentations at hearings and meetings, hydrogeological ass@ssement reports, soi Is investigations, groundwater and air monitoring analysis. Miscel laneolJs Pro.iects Sit~ Investigations; crop duster sites, farm chemical plants, explosive manufacturing plant, underground gas-tanks (numerous) Permi tting - sewage sludge disposal, hydrocarbon contaminated ':0 i 1 i n c i n e r:.. t i on . We worK wi th the agricul tural and petroleum industry, as we-l I as privat~ industry,3.s e-ngineering and environmental consultants. (' 1111, ~ ' '. , :' -. ,- - .' . ·'<·:'~~:~~~·j::t~1~L:';:;7"'··:--'::~~i;i~~4.~:~~~~4~~ff~!~~~~~.#á~~f:~~~~F~~Ç;;~~~:~;?<·~:' ,;. - "ME M O-RA"N'DU'M '.. . ;;:f-~~;;;.':)'þt;;-_·_~ ....-. .~__- W..:;~:~;;¡,~;:~~;·¿t~k.;'~';;,.;~,~!._..,. .'4>- ,__ . q':"';:r-;:;þ;~::~t: RALPH HUEY t." HAZARDOUS MATERIALS. COORDINATOR-,,,I;t.;.......;__~;'ç.. :~~~fN~};,:~,¡:;;~!S::}~~·:it~~)·:;·~>~:W;{Ä;:f~jr;f:1i.~:t:-i:'i.~lJ--::t'-T~;:·,:i;·-;.:¡è;~!J::.~;:~::.9k=f11:;;:~;.~: ·;[;;,·-:··i.~:.:;>!i\'iJ;..~~~J~;¿:f~;;::;:~:>~t·· FROM:);·;,;~t;:. GEORGE GONZALES f COMMUNITY' DEVELOPMENT _ COORDINATOR. . - -; .::\"';¡!':-_:.-;-) . .' . '. :<.: ::- -:~~;:t·,.:k',·".:;,· ·:::;':::é-$f.:Y·' SUBJECT: . RFP FÕR BAKERSFIELD HOMELESS- CENTER PROJECT::~~~,,\~:f'-: '- ...- u.: _~.~::,·.~:î:~e';::_-· .. .,", . ., .;.... .,- '. "';-~ ""-. .,' . '. -"- .. . We have' reviewed the' draft RFP for the 'referenced project. Our recommendations:' for revising the RFP are included below for your consideration. 1. We recommend that you attach the most recent site map which depicts the proposed expansion and upgrade of the Center- (according to Mr. Roy Hall, your office currently has a copy' of the map). . 2. As part of the consultant's responsibility, we recommend that the RFP indicate that the proposal and/or final design shall reflect an emergency shutdown operating procedure' outlining: precautionary measures to be taken in case of remediation ___ .,;, equipment failure. . -- 3. We recommend that the RFP contain the attached narrative which contains pertinent facts about the Center which will provide interested consultants additional background information on the project. 4. In order to limit potential cost overruns, we recommend that the RFP state that a maximum fee for the remediation efforts (design, construction, monitoring) with a fixed fee schedule for the various phases of work be included in the consultant's proposal. 5. In.addition, we recommend that the RFP indicate that the remediation efforts shall be timely and expedited to insure successful completion and operation of the Center. .. .. thank you for the opportunity to review the RFP. any clarification onour comments. .. Please contact us if you ... --./. - . .. . , ".!';~' CITY of BAKERSFIELD "WE CARE" FIRE DEPARTMENT D S NEEDHAM FIRE CHIEF 2101 H STREET BAKERSFIELD. 93301 326-3911 February 21, 1989 The City of Bakersfield, California is requesting a written technical proposal and cost Quotation to perform the mitigation of fuel contaminated soil in two separate locations at the property located at 1600 East Truxtun Avenue, Bakersfield, California, The soil contamination areas are identified as Site 1 and Site 2 on the enclosed site map (figure 1), Site I has been fully characterized by Geosystem Inc., their report, dated January 1989, is enclosed (figure 2). Site II has been fully characterized by William H, Park and Associates, their report, dated August 5, 1988, is enclosed (figure 3), SITE I The remediation must be accomplished to at least 140 feet and with a high degree of confidence that no threat to any biological receptors exists. Levels of contamination above the LUFT manual concentrations, if warranted, must be ,justified by scientific scrutiny. The remediation method shall be in-situ vapor extraction with a collection of the extracted vapors at the surface. The vapor extraction system shall be designed to reduce the levels of concentration to levels that no longer threaten ground water, above ground use of the property for habitation and to hinder further migration cf the contamination, The proposal shall address concentrations still present at the bottom of borings B2 and B4. Remediation at the site cannot negatively impact any other acti vi ties on the property including construct.ion, human habitation, or remediation methods being conducted at Site II, SITE II Remediation shall be accomplished by either in-situ or on Site bio remediation, or a combination of vacuum extraction and bio remediation, The proposal shall include a treatability study and must address all of the contaminants present including Benzene, The soil remediation associated with this site should also include eighteen G5 gallon drums of contaminated soil resulting from the test borings associated with the site characterization of Site I, Remediation at this site cannot negatively impact any other activities on the property including construction, human habitation or the soil venting operation being conducted at Site I, ~"-;. '- '" Page 2 Proposal Request GENERAL REQUIREMENTS The successful contractor shall supply all necessary permtts and pay all fees associated with the mitigation process. N01se levels associated with the project must be addressed to meet H.U.D. requirements. Any discharge from the operation may be a hazardous waste and must be addressed as such, All operations must meet Kern County Air Quali ty Standards, and the requirements of the Kern County Environmental Health Department. Each site operation must include a complete and functional operations and maintertance manual, quality assurance and quality control procedures, treatment cycle and monitoring schedules and controls, a specific beginning and end point for the project, accompanied by a sequence of events flow chart or schedule, The Field and Project Manager should be identified in the Request for Proposal and a brief qualification statement or resume for that individual, be included in the proposal. We will accept separate bids for Site I and Site II, Your company may elect to submit a proposal for both Sites or either one separately, but each Site should be addressed separately in the proposal, The successful engineering firm selected will be required to compljr with the Cities insurance requirements (included as Figure 4) . The final proposal including the technical proposal as well as a detailed cost quotation should be submitted to Darlene Wisham, City of Bakersfield, Purchasing Department, 1501 Truxtun Avenue, Bakersfield, Ca, 93301, before FRIDAY, MARCH 24, 1989. If you have any questions concerning the scope of the project please contact Ralph E. Hueyat (805) 326-3979, REH/vp Enclosures --_.__. . ---~-~ ~Q ~.J I ~--__ ~ ,.. ð --.... -~~':.~ TV ,.. -pI{ c> r O~ Q <.\ ~1 tJ n ,.1 ~ r. .~, (:--: ,,"'f.. II· ......J- .;:,n t) ~~ ~/~ Q . c ~ It e.. :.t ® 6· )(Ist-t"':.\ I 5tR"ct~~~ ( '5-30) '-l( _c'~'c. -'t:_ ^" $Jte. JL tl) , D ~;tlstíN!j !;'1 R U cf ù. Re.- 1610 ) ( , 600) +- t. é: Qst IR IA {To IV 11 " e. N u. e.. T 1,.3 U.R <?- I ;/ ~ :~I ------. -.- -- _. . .'~- STANDARD INSURANCE LANGUAGE SP7.2B1 Co~tr~ctors Pro~idi~g Professio~~l Ser~ices The contractor shall save, hold harmless and indemnify the Ci ty, it officers, agents, employees and volunteers from all claims, demands, damages, judgment, costs or expenses in law or equi ty that may at any time arise from or related to any work performed by the Contractor, his agents, employees or subcontractors under the terms of this agreement, INSURANCE In addition to any other form of insurance or bond required under the terms of this agreement and specifications, the Contractor shall procure and maintain for the duration of this agreement the following types and limits of insurance: Professional liability insurance, providing coverage on an occurrence basis for bodily injury, including death, of one or more persons, property damage and personal injury, with limits of not less than one million ($1,000,000) per occurrence; and Automobile liability insurance, providing coverage on an occurrence basis for bodily injury, including death, of one or more persons, property damage and personal injury, with limits of not less than one million ($1,000,000) per occurrence; and General liabili ty insurance, providing coverage on an occurrence basis for bodily injury, including death, of one or more person, property damage and personal injury, with limits of not less than one million ($1,000,000) per occurrence. Workers' compensation with statutory limits and employer's liability insurance as respects the City, its mayor, council, officers, agents, employees and volunteers and any insurance of self-insurance maintained by the City, its mayor, council officers, agents, employees and volunteers shall be excess of the Contractor's insurance and shall not contribute with it, The automobile liability policies shall provide coverage for owned, non-owned and hired autos, The liabili ty policies shall provide liability coverage for the terms of this agreement, contractual Page 2 Standard Insurance Language The liability policies shall contain an additional insured endorsement in favor of the Ci ty, its mayor, council, officers, agents, employees and volunteers: The workers' compensation policy shall contain a waiver of subrogation endorsement in favor of the City, its mayor, council, officers, agents, employees and volunteers. All policies shall contain the following endorsements: An endorsement providing the Ci ty wi th ten written notice of cancellation or material change language or terms. ( 10) days ln policy If any part of the work under this agreement is sublet similar insurance shall be provided by or on behalf of the subcontractors to cover their operations, The insurance required under this agreement shall be maintained until all work required to be performed under the terms of this agreement is satisfactorily completed as evidenced by formal acceptance by the City, The contractor shall furnish the City Risk Manager and the Public Works Department with a certificate of insurance evidencing the insurance required under this agreement. All costs of insurance required under this agreement shall be included in the Contractor's bid, and no additional allowance will be made for additional costs which may be required by extension of the insurance policies, FIGURE 4 R -~ Date Revised 1-12-89 ~ THE BAKERSFIELD HOMELESS CENTER FACT SHEET The Emergency Center for the Homeless Will: °Consist of three existing buildings of approximately 9300 sq. ft. with approximately 6560 sq. ft. in new metal building space (4000 sq. ft. for a day center, and 2600 in night shelter addition), and 1500 sq. ft. in family shelter addition, (wood/stucco). Total space for the center is approximately 17,365 sq. ft. (9,305 sq. ft. of rehabilitation, and 8,060 sq. ft. of new construction). Utilizing cost effective construction methods, the completed facility will be energy efficient and require minimal maintenance. °Better coordinate and ensure accessible and consistent services adequate to meet basic survival needs as well as special assistance designed to help homeless overcome obstacles in the way of their return to society. °Provide a parklike setting where homeless persons could gather, relax, think, and still have enough privacy to enter a frame of mind suitable for using the facility's services if they so choose. Services and Usage to Include: °Shelter °Male dormitory - 138 beds °Female dormitory - 8 beds °Families {external facility)-20 beds With restrooms and showers °Showers with handicap access Male - 16 showers Female - 3 showers °Laundry facilities °Lockers °Mailing Address °Restrooms °Job preparation and placement °Access to benefits °Housing Assistance °Transportation °Family reunion °Health care °Counseling °Meals-ultimately 250 meals per day °Homeless persons will be given the freedom to generally care for themselves in an unobtrusive, secure setting. Proposed property Funding Sources: and labor, (37,3% of total labor from the State ESP, Federal ESG, CDBG, and donations in cash, cost has been received in the form of donated Building Trades Council.) The Bakersfield Homeless Center is needed because: °In Bakersfield, there are over 500 homeless people. 061,8% report income of less than $300 per month (the current general assistance standard in Kern County is $311 per month). 016.7% report no income at all. ' °20% consider panhandling their primary source of income. 055% described their health as poor/fair. °Less than 50% receive any type of public assistance. °Most homeless people need only a helping hand. (For Public Release) VZM12.21 , . v·mœ . . ~ .cJð- .-- C" .~ ~ ~ tØo4 J I ..... --::;-- ,,~ ...,.r t-- .'1' .;..'~ ~ -- ....1.. W . ..,1' ->L. _......>'1..."...---- t<tfl ~ ,. ,""II "" ~.~~...... ' f~ \.II'~ ~ .,-"' ",' " " " .' .' .' 1.>;: . .'- .: . if· \ \ f M , ¡\... \ ~\-- ~ \ -; uJ\ ~ ~\ 1\3 __~---1 ,_----1 ,\..1.- \ \nr\~~----~ V 3 ' \ ~ ;~,:C;T:~' \ \ \ \ \ {~ \. ' ~i~:\;~~J,i,\" ' . '09" ..' \' \ ~... ~~ ~ ':'1; ,,!:. 'Q .",fro. -0.'.' ;, ,/" \ BU,' ~ I~g i .I~!; \ 1'""IONG \.01 _" '" \__ · n' . -" -, "0"" , ,- !~t·'~ft~:'., /~~.~!¡~¿ '\\ C\c\c\c\C\\C~J'~ \ ~b~\~ "d.-- ~/":fI~f~lAq~". \~t\;~~IIG tOllC. . 1\ .\ \ ~<t~ ,¡'J 0 0, - " ~ tll£,S\lI\£ '-- ., p¿ r~~~~~:: ,~ {~' '-::\'~d-D.::cD~~ .~o~~~~'~~~-'//- .,'&\ .._IC, ': .1£. . '~' .;~ li\1 If· .1. . ,,' '.,1 ~ ," , .' . ., ...... t- ,"'lÞ; ~ ~ r ;:! l' ',:' hI,. .,...... ~ ~ .;'1 ~ ..,. ''i,~~( ~;.\\:,rp t~,::~ c>-'\".' ,,....,. .,' " " I , ' ------------- , ,':?:d;:;: in:' ;..."t.'¡ ~- I~ ~Ol"'" ." 1'\ I ~ ¡-. :,.;,.' :'," ---' ï.'·.'f··~i'· .~".,_::_~':I·' ~ . I . . : ... , -:-~_~;,:~'::f:~~ I" \ r. ,,,!.:..L i. ...., VI"ERE 5"",OEO !.; I "'" . ,'" '..Il}' ", ,," . ..' -' .\ I I' ,I '" r"! ,":i. ;'.';:1 ".;; ,"",..::.' .':~/.,. 1'" \ \ J \ 09 \. l . J.~..ð:i1~' ..': \.:t'~ ,~ :;~" ~ ....., !j ..Ii,.: d' . \ _ /¡1ür~(J ~_ .' -! ~[.,~: .v: .f·!:·~·\· -I:~ 51'0~fI\S " ..,,1- j. ," ....' . ¡; ,. -;.;---~ 11011\ t ï' .f: ~ ~J:;;¡~f': f.I~1 \ lIIE'" COlIstl\\lC 1.'.:' '.- ,', ;::~ 'r' -~. '1'1' .. ::.:~.VI~li~¡'J.~I·\···. ': : .,:;~.:!.: -;.:,:::' .:,:\',: .,. ,,,-,,,,,,,,,,,,,,,-,,',''';,\ ~ i.-..~;~,¡T:.~i:":I-:/::il. !;_.' --=:::-~ "."'~ 1 i:,U;; Cßii/ì ;';! ~1< ,'",;fI",": ;,' J" : J' Ie .,-", ."" - ....116-,1 :..--.:..-- ,.' L "I"" \ . .\ .~~~-- \. :ï 1.z.µ'Q CENT " ,; . ER P~ÖJ " ECT ,-- \ ~O r"'-"-" : rb ~ \ ::. ., -~ 10' ".. ,..- . "orth \)þ-'( CfII1E!, lííÉ;¡-éóíi:i1 I\\lC1\Oll 1 eu\\d\\'\911(,11 .. on on ... <) <) . . I , I _. "" "to _~ . "'"" c." ,_,... \ . .¿,v'____________ ' _ 1- .\-----.-;:ji;ífi \ dJ . ~ ::0 .. .. I o Ò t: ---- \. E,,51 1 I\\ltl \I I' .- ----- .- ¿..V "'.~ ~ . 't:)~' IDrn&~Tr December 16, 1988 , . Baker~f1eld Homele~s Center 1600 E. Truxtun Ave. Due to the fact that the area in which we had anticipated for expansion of the night shelter is contaminated by in ground hydrocarbons certain design changes are required to meet the original occupancy requirements. At the same time its cost effective to implement other changes and add1t -ional ~pace drawings neeàed to complete the plans. BId, ~A~ Night Shelter. Change ~ 1, Relocation of addition from Northwest corner to Southwest corner, This entails changes in the: Electrical. Mechanical, Architectural (space de~ign, exiting), Landscaping, and Civil drawings on &11 pages of the plans. At the same time it was decided to stub-out for additional plumbing hook- ups for future expansion of the laundry room, The women's area is being relocated to the Southwest corner of the aådition at this time also, the previous space (women's sleeping area) shall be overflow for males, Bid. ~D~ Family Shelter, Change # 2. Drawings for both existing anà the addition were not åone as part of the original project plans. This space is 3000 Sq,ft and provides overnight housing for 5 :amilies with separate rooms and restrooms with bathirtg facilities, Site. Change # 3, Parking has to be redesigned to accommodate the amount of vehicles required by Plan Check, C:ty of Bakersfield, Due to Fire Departments request for a fire lane on the west side of site to gain access to the Night Shelter, Change # 4, \ . A 10' high earthen berm with landscaping needs to constructed across the Northern property line to mitigate the noise from entering the site åue to the railroad, These Changes increase the project cost by approx $93.000,00 for design ~nò construction, Reference map attached, · .... . ') ) ....: ~I ~~.. .~ ... ' \ City of Bakersfield, Ca. Community Development Department ***REQUEST FOR PROPOSAL*** ,. The City of Bakersfield, California is requesting a technical proposal and cost quotation to perform a subsurface investigation, and propose remedial alternatives at the future site of the Bakersfield homeless shelter. All work must be supervised by a certified/state registered geologist, hydrogeologist, or engineer. ~. Background On May 26, ~988, two underground storage tanks were removed from the future location of the homeless shelter property, geographically located in the southwest quarter of Section 28, T.29S., R.28E., M.D.B.& M in Bakersfield, California (See Figure 1). The tanks were removed from the northwest corner' of the property adjacent to Truxtun Avenue (herein referred to as Site ~; See Figure 2). Soil samples collected at 2 feet and 6 feet below the bottom center of the tank excavation were analyzed for total petroleum hydrocarbons (TPH) and ranged from 800 - 7,000 ppm. During July, ~988 a preliminary subsurface investigation was conducted at the homeless shelter property and a repo~ generated on August 5, ~988 is enclosed (See Attachment 1). The investigation indicated that soil contamination existed at åepths in excess of 85 feet below ground surface (BGS) for Site 1, In aådition, the study outlined proposals for additional investigative work at Site 1, but did not specify remedial alternatives. 2. Objectives The objective of the investigation is to determine the extent of subsurface soil contamination at Site 1 and propose remedial alternatives for site 1. All work will be restricted to the specifications outlined in the "Scope of Work". " ~-',.. ." "1 --.' ~ ) - , .-......:t.. ~" -~ RFP-Bakersfield, California Page :2 3. Scope of Work Based on the August 5, 1988 subsurface investigation, soil contamination by hydrocarbons has been encountered at site 1 of the homeless shelter property. This condition will require a subsurface investigation of site 1 and the formulation of remedial alternatives, as follows: 3.1 Site 1: Complete a minimum of three test borings to a maximum depth that will define the vertical and horizontal extent of hYdrocarbon con~amination (expected not to exceed 150 feet BGS), using hollow stem augers. One test boring will be located at the center of the old tank excavation, with two located down gradient (See Figure 3). Soil samples will be taken by the split spoon method, with sampling intervals to be proposed by the consultant. Split spoons liners should be utilized to allow soil samples to be sealed, refrigerated, and transported without head space. Analyses of the samples should include benzene, toluene, ethylbenzene, xylene (BTEX), and total petroleum hydrocarbons (TPH). Evaluate soils properties (i.e. porosity, grain size distribution, moisture content etc.) as necessary ~o allow an accurate ãevelopment of remedial i'" ~. a... ...e=na...:L ves. Develop remedial alternatives to reduce soil contamina~ion to levels to be negotiated with Kern County environmental representa~ives. " ) "'\... ~ 'Ï. '< \.' ! RFP-Bakersfield, California Page 3 ,. 4. Cost Quotation The proposed cost quotation must identify labor costs (and hours) by specific individuals and wage classification, and identify non-labor costs including, subcontractor, equipment and administrative. If required, a site visit can be provided upon request. In addition, the consultant will be held responsible for all work completed by subcontract services. Costs incurred due to field and/or laboratory errors will be the responsibility of the consultant. 5. Schedule and Deliverables This project when awarded must begin within 10 days of notice from the City of Bakersfield. Work will continue without interruption until all work outlined in the consultan~'s proposal has been completed. All reports IDust be submitted to the City of Bakersfield within 30 days of completing field work ou~lined in ~he consultant's proposal. The consultant must assume that the initial repo~ submitted will be draft and subjec~ to revisions. .. ' ·C ") '..... \ .' ! ·~1 ! August 24, ~988 TO: Usha Mehra FROM: S. Eric Vredenburg SUBJECT : Request for Proposal (RFP), Homeless Shelter, Bakersfield California Attached is the RFP (final draft) for the homeless shelter site in Bakersfield. The RFP has been based on the information that you proviàed, along with revisions from our telephone discussion of August 23, 1988. If you have additional comments, contact me at extension 8510. Attachments cc. A. B. Cavender M. S. Ishimoto bakecau2 " "'\. " 'õ I~ ~1.. -.k - . - s----- ,... ~t - - -..---__ ,-..c. ~ U"''''~.~'Y'. I' ~~=- ~ ,-..- ~ , ·Ii r _ r , ,.- t. r- t ."-. . 1" I . ~, S,,_ ".J "'> I F~~r~ BO~~7·ESS S~=ZR s==~ D.S'.!' TRUXTUN A v'"EN'"u~ EAKZ?~FZ~, CALIFORNIA S C.A : E : ~n=2.00Ö' . . Sou=ce 0: Base Oil Cent.e= and Ouaè.=angles. Figure 1. Map: U . S . G . S . Lament. 7~ Minut.e . . Showing location1 9f site. "} i' () Ii rJ 5i~e 1. s Cu 1( ""r¡ o IS.3:. ~ 1(",,)( \...,(\ Avt. Q ~ ~. C f: c K x ~~,/ r{) 1e1 --- --- ------- ,.... >- .\ ' ,~ 1" jI , :;. EAST -;:;. u X -TvN ¿f Æ.lVc.J£ ~. \ 11 ~ ~,'ë " ~' ~ ~ 'f.' ~) ( }Õ'jgure 2, Showing location of Site 1 at the homeless shelter site. ~ ;> ~ ~ S 1-1£ !L (- . ~ 6 153Ù E --rr -r. 1Iv.'£/.'v£ I í Ux (V-Y QÞ ~ EXIS'l'ING 'l'ES'!' BORINGy . . r· ~ PROPOSED 'J'EST BORINGS " F iglire 3, ShovJÌng loca t ion -- of existing and and proposed test !Jar lugs for Site 1. ~, :;;, ) ;.. ~':';'..::, ~::-~ ".~~. <. _1 \~It' I L:" 1 "r-'I ~.. p ~ ~ K _UõIST~.I:D G~DLOGIS'f NO. 277' 3040 19TH STREET. SUITE 10 BAKERSFIEL.D. C.A.LIFORNllo. 9330\ TEL.E PHONE leos) 3:<:7 -968 I August 5, 1988 Mr. George Sweet P. o. Box 80963 Bakersfield, California 93380-0963 Dear M=. SWE'et: In accordance with a request by M=. Roy Hall of the City of Bakersfield, Community Development Department, a site characteri=atión study for two underground tank locations situated on the future hom~less shelter property has been perfo=rned. . The proper~y is . located in ~he southwest guarter of Section 28, .T.29S., R.28E., M.D.B.& M. in Bakersfield, California (see Attachment A). It is comprised cf the property designated ;:,y-l:530~" 1600, and 1610 East ~ruxtun Avenue. Two 1,000 gallon gasoline tanks were located near the nor-~west corner of the property near the northwest corner of ,the existing ;:,ui1ding at 1530. East ~=UXtun Avenue. This ~ill be referred to' as site No.1 (see Plate 1). One 550 gallon ¿iesel tank was located just east of a shed that. has now been removed. I'T'I' . _!l~S will be referred to as Site No. 2 ('see Plate 1) . On May 26, 1988, Apex Environrner.tal removed the two tanks from.: Si ~e Nc'. 1 a.nd -:.he sinçle ':.ê.rJ<. ==om Si -:e No. .2. Soil samples were colle::'tëa:-ê..t--2-fee-:: '2:nd' 6- feet below 'the bottom center of each ...._,..,\r __c...__ . GasolinE con't~7¿nation was fo~d in all fou= soil samples from Site No.1. To'ta1 petroleum hyt=ocarbo~ conoentratir¡s ranged from about 800 ppm ~o 7,000 ppm. Con~amination was ~lso found below the diesel tank at Site No.2. Total petroleum nydrocarbon concentza~io~s were 10,75£.56 ppm at 2 feet and 11,01ï.~1 ppm at 6 .= - ...ee_. On Janu~-y 20, 1988, Mr. Hall received a letter" from Mr. Eill Scheide of the Ke=~ Coun~y Health Dep~=tment requiring that a si~e .~ ......~,. ;:;) '- .i !"':. George Sweet. r-.ugu.s-:. 5, 1988 Page 2 characteri=ation study be conducted on the property to delineate . .__...~_......__ "-..'-:--='f'""!'.; ..... _.... _._,.__ ... . ..... e.·· .... the vertical and~örfiöñtãl limits and the degree of contamination. .... ; . ; .--- .. ..' . ,. The sediments'on the property are composed of alluvial deposits éQnsi-stingof~silts, sand.s,. and gravel. . Based "on° Kern County Water . ..' .. .' .:'. . . ~ I . Agenèy da~a, <the, depth to the prima::y groundwater table below the p~?perty is in excess of 200 feet. No perched groundwater is known to¡ e~is_t . bel.c:?w .t;~e. property..._ ,. '. .J Two test holes were drilled at Site No. 1 in July 1988. Test Hol~ No. 1 was located jus-:. west of the nor-:.h end of the former dispenser island location as shown on Plate 1. Test Hole No. 1 was drilled to a depth of 40 feet. Soil samples were collected. -. c.~ 5 foo~ in~e=v~ls st~r~ing a~ a depth of 5 feet below the surface. Field screening indicated the presence of significant levels of gasoline contamination throughout the 40 foet depth of- this hole. An attempt was made to drill deeper, but ~he drilling rig could not pene-:.ra~e any =urthe=. À larger drilling rig was used several days later to drill Test Hole No. lJ:.. Test Hole No. lA was located abou~ 6 feet sou-:.h of Tes~_)3.ole No.1· (see: o?l.~'t:e. 1) . Test Hole No. lA was drilled too a åep-:.h of E5 feet. Soil s~~ples were collected a~ 5 foo~ i~-:.e=·vals star-:.~ng a~a·depth of 45 feet below the su=face. Samples we=e not collected above 45 =eet because -:.he samples f=om Test Role No. 1 should approximate the .corresponëing sample depths in Test Hole No. lA. Again, field sc=eeninç indicated the presence of sign~=ican~ levels of gasoline contamina~ion ~h=oughout the 85 foot depth cf the hole. hll 0= t~e soil s~~ples ==om bo~h tes~ holes were analy=ed en'site with a Gastechtor Oj~/Surveycr and then sealed and placed en ice. WILLIAM H, PARK I ..' ,:) :). r-"..=. Geo:-ge Sweet. Augu!;t. :5, :19&8 Page 3 " .Selected~amples -were delivered to a state' certified laboratory and anal~~zed ~or 1!._.T .X:.- and T.Y. R. tsee Attachment B). The 5 foot and .25 foot ,samples from Test Hole No.1 were analyzed and the 45 foot, '65 foot, and 85 foot. samples from Test Hole No. lÀ were :a.:n" a..l:::zed. . ",The..5 -.foot~· sample:'from" Test Hole No.·l 'rep-ortedly -contained 4,600 . ppm':T_'V-.H;':-znd 'r-~-gh·~:t.~ve·J.$' a& ~~:.. The 25 foot sample f:;-om Test Hole No.1 reportedly contained 380 ppm T.V.H. and moderate levels -of B,..,!,.·X_·__The45 .foot sample from' Test Hole No.' lA"' report'ed.ly con~ained 12,000 ppmT.V.H. and high levels of B.T.X. The 65 foot sa.mplefrom -Test Hole..No. ~À repo:-ted.ly conta.ined 400 pprn T.V.H. and moderate l~vels of ,~.T.X.. The _~5. fOO~. "~amPle .from Test 'Ho.le a~/ No. ·lÀ repo::--=edly cont~ned 5.L0 ppm 'r.'V.H. and moaerate> level~ .of ~~ ·B.T~·X:~ÀttachmentC·lists'the-results"of thë chemical analyses. . - Attachment D shows borehole logs of Test Hole Nos. 1 and lA. The chemical analyses of selected so~l samples from Test Hole Nos. 1 and lA indicate the presence of high levels of ga.soline cont~~ination atå.epths .of 5 feet and 4.5 feet and modera:ce levels of gasoline conta.minaticn .atdept.hs cf 25, E5, and 85 feet. :Field sc::-een~ng in¿icated-rnoå.erat.e to high levels cf conta.mination from tOp to., bottom in both' test holes., The bo::-eholelogs in Attachment D show t.he "values oZtained wi t.h the- 'Gastechtcr meter as well as notes regarèing hyèr?carbon odors. The values listed for ~~e chemical analyses (Attachment C) should. be considered minimum levels since gasoline va.pors can escape in signific~~t quantities p::-ior to analysis even with strict p::-ese::-va.tion techniques. '. Given the current dat.a, t.he total depth of contar.~nation cannot be assessed.. A deeper test hole is needed to ac~~re t.he necessa=y data. Also, two offset holes are needed to deter.mine the horizon~al extent of contamination. A proposal will be made under separate WILLIAM H. PARK -,~ ---; '...... .... Mr. George Swee~ AUguz~ 5, 1988 Page 4 cover,·:to drill"" three>: deep-test - holes to-;Q ,maximum, depth ;of ·150,·.. feet"each. '-The - first' tes't' hole would be- drilled roughly'~between the two~tQn)clöcations:'·.silni:l.ar".to.,Test Hole-.Nos..,:l. and 11..:. . It· would be drilled ùntil-the maximum depth of contamination has been ~xceëäed·or to 150 feet, whichever is first. The two offset holes would be drilled to the nor~h and west of the first hole. The ëxac~ locat.îbhs wou:ld åepend.on-the results' ofthe·first-hole. -: The ãeþths c=~.:.the~offset:. holës-.:-wmild b-~.basëd.: on, the:' same c::-i teria a.s .: thë --first'-hcle. ... :- Da t'a -:pr.oviõed; by,;"these 'three~. proposed _ test ".: holes" 'should" be·. ¿õegÚa t.e.;to del.inea te: the vertical and horizontal exte.r.t and the deçree of contarni~ation at Site No. 1. we feel it is 'uÏlliKely 'that ·cor.tarnina~'t.se:·:ist below 150. feet, b\.:t we can 1 t be certain ~ithout drillinç. Also, we feel :that the 85 foot total depth' rec"ched~" SO" far···ãcesnot·, represent 'the total depth of contami~2.tion- at Site No. 1.' Three test holes were drilled a~ Site No.2 on J~ly 19, 1988. Test Eole,No.4 was è=illed through the center of the fo=mer tank location (see Plate 1)., Test Hole-No. 5'was drilled abo\.:t 12 feet e.ast of Test Hole No. 4 and Test Eole No. 6 was drilled about 9 feet·north of Tes't Hole ·No, 4 (see Plate 1) ~. Test Eole Nos. 4 and 6 were è=illed- to a õepth of.: 40 feet each and Test Eole No. 5 y!as drilled to a depth of 30 feet. Soil s~~ple.s were ccllected =rcrn éach'test hcle ~t 5 ..:.."...-.... -......."-".... " - :.nterv2.':'s s-:'ë..=-=i:J.g -.... - c.~ c. depth cf 5 feet below the surface. hll of the scil samples were analyzed on site with a Gastechtcr OXY/Su--veyc~ ~nd ~hen se~led ~nd placed on ice. Selec~ed s~ples were delivered to a staté certified labo~ato=y and analyzed for ~.P.F.. and ~enzene (see Attachme~t B). The 10, 25, 30, and 40 foct samples from Test Bole Nc. 4 were anilyzed. The 15 ~~d 30 foot samples from Test Hole No.5 were analyzed. The 20, 25, 30, anà 35 £oo~ samples from Test Hole No. 6 were analyzed. W ILL I A MH, PAR K } '<!.toY ;;) l"'..:. Gec:-çe Swe~'t Auçr..1St 5, 1988 Page 5 Field screening indicated the presence of gasoline contamination (gasoline oàor, relatively high meter readings) and the chernic~l analyses confirmed this. The 10 foot sample from Test Hole No. 4 reportedly contained 350 ppm T.V.H. and 1,200 ppm T.P.H. (gasoline). Moàerate levels of B.T.X. were ~lso àetected in this sample. The 25 foet sample from Test Hole No.4 reportedly cpntained 17,000 ppm T.V.H. and 41,000 ppm T.P.H. (gasoline). Ve=y high levels of B.T.X. were detected in this sample. No benzene or T.P.H. (diesel) was àetected in any of the remair.ing samples submitteà for analyses. . Attachment E lists the results of the chemic~l an~lyses. Attachment F shows borehole logs of Test Bole Nos. 4, 5, and 6. Mr. Stan Comer, chemist -.... c.1. St'-lC :'~o=a to~1' , repor-:.s tha t ,,-hen an analysis for benzene is performed and benzene is detected, -:.oluene, eth~'lbenzene, }~lenes, and isopropylbenzene must,also be:repor-:.ed. Bence, the analyses of the 10 and 25 foot samples from Test Bole No.4 reported all of the E.'l'.Z. constituents rather than-just ber.zene. M-. Corner also s-:.ated that the T.P.B. values reported =or ~ese two s~~ples ~re probably elevated because ~ diesel factor was used in the c~lc~lations ir.s-:.ead of a gasoline fac-:.or. Bowever, the E,':'.~:. and T.V.E. values ~re correct 2..":!::l the analyses do in~ica-:.e gasoline, not diesel. ~~eid S-~ee~~no'o~ ""'ne s--~ìes _ _ _ '-_ ..~ _ _ t.. c..i~.~._ -' from Test Bole No. 6 indicated the presence of con-:.amination at àeÿths of 25 and 30 fee-:. (see A-:'-:.ac~~ent F). Ãlthough the la~oratc~ reports- do nct:confi=m this, ~~. Comer stated that some con-:'aIT~nants were fo~~d in -:.he 25 foo~ s~~ple, bu-:. -:.he levels were below the 50 ppm ~~nimum reporting level utilized. Based on the res~lts of ~his investigation, the vertical and horizon-:.al extent and the àegree of contar~na-:.ión at Site No. 2 can be inferred. The in-:.erpre-:.a-:.ion presented below combines the info~.ation provideà by both the laboratory reports ~and the field screening. Two areas cf contamina-:.ion are åefined as follows: ~ . ~ JrJ((!/<-~ r MfZII J. <- /J "r ~~ -J? ~~_~----'-'----'----V WILLIAM H, PARK --, ...,...... ~=. ~e~=ge 5~ee~ Augus't 5, 1988 Page 7 -:J .-- would re~ire at· least several months to complete. _.The c~~~~ ~. these- three~ethQd~are ~xPected_to be similar. Proposals for . ..-. - --. ~ remedi'"à.tion'¡s'hou1"d -.besought. from appropriate environmenta.l 'cont=åc'tors: ' ·r·f :yO"u: have··.a.ny .questions· regarè.ing this' repor't . or 'further work .:the ~si te:, please feel .-f?;~r:to :'call'"~ . . '.. DRS/'!'FG/ j}~ .You.rs tru.ly,. '. IJtI CÂhJ ¡2. ;J~/d--- Duane R. Smi'th Registered Geologist S~a~e cf California No. 3584 ..-~~,.~ ~ Thomas F. Gutcher Àssistan't Geologist . ~ . - . - .. ... . '.' . . ".. " -- c.... _. WILLIAM H, PARK ~.,~'-~:: -~..d~ .--- ì ......... .-".... - ~~.- ': . ------:-4 ---- ....:. ," " , .- I ~-, . -~. .. - I... 0 CA'::' ION . !""~:? ::UTUF2 BO!'!EI..:::SS S::-:ZL::':::R SIT::: EAST '!'RUX'rJN A~'1.:'"!:· :SAJ~?.s!"IELD , C;;:'I::O?J.\IA SCALE: ~n=2000' ..- -- BRUNDAGC Source of Base Ha~: U.S.G.S, Oil Cen~e= and l.~on": 7 ~ Hinut.e Qua¿=anbles. ¡¡Be . . 1" : ~ s...... Attachment À . -. t I I· , _ --- .. - j. . ! / I· CIIAIN OF CUSTODY H_ECOH.D ; i !; , " ' , ,1 " .,', . , \ :'t. . ~ ColÏector "I , ; ':~ Client -, ~ Úame: 7;;'1'1 GtATC ¡;'EtZ. ,¡fame:/' Gt:::'Oæ.6G '¡WË6T.. ., . I h I - . : II I ., Company: '-¡,II. park'~ Åssociat'es 'J1ompaty,: -~~/1~r:: _':: ';" I Address: 30~0 19th St., suite 10, .~ddre,ss: r)D, ßo~'180U3, ,'.', ~ . ~. ,) . 'i Ðakersfield,'Cl\ 93301~,-.: (:": ,ß~k...';fJ-5FIf:;''-?t ~/l 933,?/~~ ,"l( Telephone: (805) 327-9681 i TelE:phone:' (~,D5')39'3- 6370 t . ~. .,,{!I 1/.:' ~ ':. ',~ ',t BU.l to Collector ( ,). ,. ;: sill :toi ~~iën~¡ (-.?()~ " , , Sam~le Tvne: :SOIL PreservatIön lIèth~d~,/<~tÇþ ¡'CoCD;' :. ~=- o'fU (j, .? ' ~ I Location of Sarnplinq Name :E~ r("O':1..E Ilo' 1FLE5-S S/(~Lr Ell COInpany:_C,r)' or:: ISI1K..r¿:R..JFIEL!) Address: 1:530 /60o.1GlQ £, 7/?u '( TtlAJ 1 7 134 k_ t /l. 5 FIE L D ;. (l7 -" Telephone: ( ) Dill to Property Owner ) .' Sa'm~l1nß "ethodl 5PL IT 5"í-'DON T. _.- - --- -- ~-- -_._._- Sample No. Date Time De s.£!:.ll'!tion AnalysIs Requested".. ¡ '. " i 'Labot~_~~¡_ . .¡f / . O' 7 /,.!. h' g 5''') 2.. S' ~/,,,JLE~-/~r:>":"r,,r;:1'!.. .r: ç;-r: ... ,t, .' ., j, . , ,'r:)\pt \ 'r: /-/. S ß, X, lJ.' H, ~ .~. , :~ 61J~ /itAlIC:. SIrE : ,: ~ \ \ , - . " . ~- ~-~-- . I.. ',. , ! -- /, II, :II: )7/1&'/8(, IS", G5" 8.Ç' .511,'-II'L-r:5-r-o~"'E~ ? 1 I . : fA B,T II: 1-1. . , \' ~ ,).~ s X. '7: ,.' I ' ~, '.S~l.ð - 'Sf (..1 11 ,f ç¿1IV¿è I TE . ,~.' .1 ,: , 1-1 ,t- 1- ') '7 / IJ l'i 8 ~ /0' 7_S :50' 10' S"/Itf'cES- I'J, 1-1. 1 i ß6¡j~ÉN~ -. , J JD) 7- j- T. , tSfð( - ¡S' . - FOr!/ f B 1'<.. I G S '=' L. ..1 N Ie.. ' .s ,.,-,;:. il5 ? /5" 3 D" 5"r11,,(-'L€Sl Fb/2.I' {;,Æ!. 1-1. , : t: /1. 07/Í9/gÒ T: I~ -r Is 6N?c= cNG JS73 ..' I r- D : E.s'E L.- 7Z1.0!L< S I ¡-r=- 0' \ -.... . . ; _. - r: 1-1. -1/: G ? 20 " Z.S' .301 3Ç' 5/11'1 '':'LrE 5- 1/ , 13 ~ ,,/.¿ ~;¡ G" . 07/11/~'? I ) -r;p ,¿ I c..11S - \r" F()~/n G.ß... tJ I G > e:' L 7;1/\Jk.. SIT£: , : , ::;, t , . , t' i : - I' 0, f i : .i '. , ii, ~ ; ô' : I , .. , I , : ¡. ; , - " .4"" \ 7-" . 7' I " t.I -t t u ) :1' - J D t 1~ ..- .1 <3 V\I\( ~ ' ( : . p/?!<. K- r: 115 sere. . , L<Lb()~<L;\&Ll ! , -~t) '~ê\teto1 110 I~s . - of· Relinquished' By: :;;}cï,v./¿lutt-:L--- . Received Oy: 'C:::-)(ev--O-D- \\O-h^-..U Relinquished By:' d=- COll1pany: U 1-1, COl11pany: ,., Date": ì -?O--?··~rt; Company: " Da te,: , ' Received Oy: ~ I Company: Date': .' j Relinquished By: Company: " .: , Date: ",. . .:! .. Da te:. Received By: Company: " ~ WILLIAIJ ·11. , '., , .' .'.. i PARK AND. ASSOCIATES .' ~ ',.' ; Sheet I of I ) '. .S~lC-' . . .." '-~ ¡ ~I.,o~,,.· .f ........, .. -....\J J ..T .' . . , . Clltint I }ra:m;'~ . George 'Sweet . Address' .,; .,:P.O~ 80963- _. :'.' ;::. .:. ,;'Bakers_field; ~~:..::..' -.:. ..& .:.J ¡ ..":" . . CA .9:3380-0963 Date ;Date .Date sample received : 7-20-88 analysis. C~Qmpleted:; 8-02-88 pr- repor.__t. '-" '_... : I 8-02-, ,88 t "I~. ,. '. ,;) ",..; . A:...,,,,t-...:-,,,1 ""~p~;_, .. U"") ~.............. \.....6. I.....". ....;,...~ Iv - -' " :RESULTS=OF ANA~~~!S . Labor:atory No. '·1564 through 1578 - Project: Future Homeles~ Shel....er ' . ";156-'¡- ID: T-,H~'-;1-5' Ben::.e-ne .:Tol uene Ethylbenzene .p t m-Xylene o-):;\'lene !sopropylbenzene TVB - 'ugm/gm', 62 2ïO - 96 510 280 42 4,600 MRL;ugm!gm 0.1 0, 1 O. 1 0, 1 0, 1 0,1 1.0 " .. .. .. ~ ;15E5 ID: T.B. ~1-25' Benzene _'Toluene Eth)-} benzene' .. p, rn-Xj~lene . - o-X:rlene Isoprop:ylbenzene -¡VB ugm/gm 3,3 20 11 43 :5 MRL,ugm/gm O. 1 0,1 0,1 0,1 0.1 0,1 1 . 0 ~ ~ ';:;.0 380 .. .....- -, . Me....ho¿ of Analysis: Calif~rnia DOHS LU?T manual NRL = ~inimum Reporting Level TVH.= To....al Vola....ile Ey¿rocarbons ugm/gm = microgram per gram ND = Not òe....ected ~ b.M Stan Come:- '. " -', 3155 Peº~sus Drive Bakersfiel¿. CA 93308 · (80S) 393.3597 P,O, B6x SOE::5 Bakersfteld. CA 93380 Þ.-=tachmen-= C r ,. ,:;) o -,- Lab~ra.tor:r ~o'," 1564 through 15i8 RESULTS OF A}~ALYSIS ~ 1 5 6 '6" 1 D: T. 11 .." :# 1 A - 4 5 J - - -:-'ñëñzëñë Toluene . , , E:t.J1-7,·l benzene '- " . .' J;, rn-X~:lene 7'" -~-';':-::,-'l_en.:e "7'- - -.' -r s-oprop~~ Ibenzene . .!]'VB '-" _. :, ; 15·6J._.ID.=_ }...J1_'.,.~ lA-55 I Be.nzene Toluene Et.h;d benzene p,rn-Xylene o-);y~ene Isoprcpylbenzene TV1-! .;;,-~c ~T'\. .". ...~ü.., .-....." T ÞH, ;# 1;',-85 ' ) Benze;:¡e . . Tol uene Et,h:,·.l ben<.ene p , nt -:~ :''' 1 ê n € C.-X:ï} Ene JEop~~pylbe~zene TV11 . J Project: Future Homeless Shelter ugm/grn NRL,ugm/¡m 320 0, 1 1,700 0, 1 380 O. 1 1,700 0, 1 830 0, ! i1 0, J 12,000 1.0 ugrn/g:rn ~m.L,ugrn/grn 'J - O. J ~ . ::> 'ì . O. 1 _ J. , ., o , J ~..., 56 0,1 3J 0.1 ~ - 0,1 "T , ::> 400 1.0 u;m/gm !1:RL,\.:gmjgrn 1.7 O. 1 11 " . v. l }1 " " v. J 48 o ' ':'''ì O. J ..... .- 5.5 0.1 ;:)jO 1.0 . ,. ....._~ .... \...~: J. ma.nual ~je'thnè. Gf .::"!'lE..l~tEiE: C~lifo:"r¡ia DOi~S :-iRL = ?-jj ni m;.rn . Rp.:nc~ting Lev€ 1 TVH = 'Tot.a1 Yola"ile n~'¿roca:-b,ms ugmjgm = rni~rogram per irarn' ND = Not óe~ected J -"- --~-_.. ,\1;;- (~ St.a..n Corner .' .' ~":t;;>~·,.,m<?-nt C { --.,- I -... ;~ ~ ~' 41 - I t. W- ee .. :- ; - - to' - - C _ to .¡.) t." C 0 V, - W. "0 CO C ~ ~- -,-,.,QI/)~ 0 E r.' E It"'¡"~- - ::; c::; c;o. .,.J ..., fC Þ:~ O- r.' - c It t.' .... 0 - '"' -" t-<-OEE .,J .., w. r.; o ... c;o. w. - E .oJ >~Q.Q. ..J "" ~ ='rxr tf) - 0 · . - . , :-.." -- ' .- · ' . . - , , - . -.. ". - - - · . , , 5 . e 177 -4.600 - , , , . , .. , , , - · . - , - . . · . . '* 170 10 - . , - . . - ' . - . - , - - . , 15 - ;.; 170 - - .. ... .,¡.) . Q) l ..,. . · " Q) .0'.. '*-I J -i .= ] .,¡.) I '. 0- Q)-j". :;:;¡ \ l - . . J . . I' " , -;. -I' ',' J.' . , , I '. J:: ~ ': I . j''':.: '. j:.< >': '* .. . . .. . . '-f' . ... l, :' 20 '* 365 ..,- ...;; e 250 380 30 ... 3E.5 . 'j- -;:; 500+ , ~ï5 40 7: T.D. 401 ...-.- _.: ---~. - - }- .....~~J I !' ---- --- - ..... - ::=' ß-_'F:.::.: ß._~.~. :..).:: =...;... ":'"'E:S , '\.-- --- .... - -- - LO=A~¡~N: Bakers=ield Eo~e~ess Shel~er ~:::~:' E::':' :::':::1'\:':;-: :;::::;'1' : ': . .... ;'''; c . ~ :;~:=E :JF.::':"!:::>: 0 ï /: ~ ;' E ö r::'E\- ;.=: ~1, : RIG r':PE: 6" Hollow S't.em Fliaht Auoer l.... 1 .....- ,..._- - . Litnolo~ic Desc~iDtion " . " Silt, brown, sanày, fine to very coarse graine¿, poorly inà~rated, strong odor. Sand, tan, silty, very fine to very coarse grained, loose, strong odor. Moist, s~rong odcr. , ,. Si~~f ligh~ b=o~~, poo=ly inâu=~~et, st:::-ong oò.or, Sand, t~n, ve~y fine to very =o~rse Sr~~nec, loose, s~rong oeor. 0', -Silt, ==own, sanãYr fine ~o very co~rse g=~ine¿, gravel cc~~on, poorly in¿~ra~e¿, s~=ong 060r. " ""~j~ ~ i " . ~__~, _row~, poor_y ~nc~=ateú, oòor. s-:'rong , : Sil t, brown, sanèy,' fine ~o ve~ coarse sraine¿, gravel r~=e, poorly ind~=a~e¿, s~rong oòor, " - Sam;:J1e 9- Sample Analyzed . . J..to=a~~on Þ.~tac:r.:nen't D -"'--- ---.- F , ~ '- --1·- , .' -- = )~---C'? - - , -- c _ _J-.. _..::...-' -I -- I -,;-~-~ .... QCt: o E: - ::¡ c-< .=.. ~. ~u .... ~ ., - o -.;. .--:--:: ... . . · - . , . - .' , , 5 , · - , - . , , - . , .' - , , 10 j :--~: J . . -, J ,-. - . 15 - , - " . .;...J _ .". : OJ QJ ,.... ... . ... Iò.¡ I·' -¡' .... -I', : ~ g j: '. I ' , , -! ., ' I' '. "'"i " /~ ....u 25 3D ~.. . . . ~ - . . I' : . -\ '.' : . ... .." -}... ,. : ... . , 25 1...;··: ,.' ... .... · , J" '. , ' , ~ : " :: .., 40 -:', . I'·' .. -¡ ':' . . T.D. ~ I c ::-1 -' I ;\ c_ e.' I 11 - - ~-I-:' ~, ~'E ~-~ c::~ ~~~ ·-1 C:'_ 0 '~- ~c ...tt ~ . :> '"0 Q.. '- ~ , :> ':;Gr . - . " 85' - (. c- If. V¡ c.: tr _ QC "=' , . - -....,.....~""':"'~- ---- =.~ .. . . ~I , .~.. - , -':--" .:: r_r-.=.... - , ....--- r_"" __ , C"'..-- ..r _ _ .:.' ",-,- - 0 _...._... _ .- ~~:^~:~N: Bake~z=ielè Homeless Shel~e~ '=!:~~ E~:'!:· _==--~"~=:~ : :;.~: 8l~ : ': ....... 1,::: :ï~:-:: :!::'::':'~:;I ~ ë ï ,/: t: " E S . r::..::\: ;::: Ol~ : , _r, .;.~S:.I RIG TYP-:S ~ -6" Hollow S~em Fliaht À\Jge=- .- .:" 0' '.~ '~".'.: ~Ù¡o-J.;f:'.¿·'D~~ë:::''D~ion-·-- -.---. - .... ... ~ -.. .... ___._.__~_ o_..____.._o~..._...._.. - . , S·,+- b - &' ~......, rown, sanoy, _lone to very coarse : ~grained'/\'Pooiry~ 'induiat-ed, s't~on9" odor. -" . .' 0-.· .. Sand, tan, sil~y, ve~y fine ~o gr~ine¿, loose, s~=ong odo~. ve:-y coa:-se .- Mcis~, s~rong odor. - c:j... ----, poo=ly ... ".. :.nc~=ê.~ec., li S~-= ~=o~Tn, s~:-ong oè.o::. , - Së:.nd, 't~:¡, ve.=-y s:::~:"neè., loose, =:"ne 'to ve:-y coarse s~rcng odo=. . .. .. .~il~, b::own, sanè.Yr ~ine 'to ve:-y coa:-se s:=aine¿, g::avel cc=~on, poo::ly :"n¿ura~e¿, s-:.:::-on9 060r. .. c:j... -...- -, bro....·n , inõu::a-:'e¿, poorl~' s-:.rong oôcr. , Sil't, bro..."n, sanò.y ¡ fine to very coarse g::a~neQ, g::avel ::~::e, poc::ly in¿u=ate¿, s-:.::ong oàc~, ~ - Sarn?le Location ø - Sample Analyzed Sheet 1 of 3 J:.. -:. -;a =hmen-:' D r ~ 1 V- I .- tJ - .,; .... c.. e>r. t: c:; E. ~ -< :¡ c. 0- IV .r. 0 -< eJ U c.. - ; E -" ~ V) 40 · .. , - , . 0 : . , . 0 0 · · , -:" , · ", P'.' o e. . · . 0 ~5- "." . ø _ - . e o . . - . ....~--- - ' " , . , . . o · .. 5°l·< * j. , 551, , 1 ~ . . ..., -j o. ~ J \ò-( J 60J·· ", I '0 :s~. e c:., C) -J"-' :;;¡ -. 65ll.: '.0 , . -\ '., l : eo ' 1 e .. -\ . ¡oJ' " . . \,:,'. 1 ' .. . .. l- . .. . __ J . 0 i -' ¡ "0 r" ".. -< ' .. .." to, 80 ~ '0 '0' T.D. ~J -..J ~ '-=' p . -~.~. -::::-:::; s ~ I V- ~~ - c: _ ~. G.' 0 0 I.'": ~ ,......,. l --i -'..;;; ~ . c.' t..:E c--....f'i.- ¡x; c.. - ~ .. .. QC-o c.. o~u '" __ .... ~ 0 E 'e ~ o~_~.;;.. J.T >>,c..c.. ~ ='f'XI COt - G 500+ 500+ '* 500+ ø 500+ .... 500+ .... "* 85' .. , , , 12.000 4ao '. . 220 ~95 -,.~ .-. : : :: ~:s - - - t· - .." -..- --- -.. w. 'I--" -.... - p A..FQ: .A-.-"";;;:::;¡ .E-_S S 0 C =A. "::':E. S .' P" _.. __ .. .. ~:;:;..:-::)~~: Ba\:€=-~:':E::: ~o:-ne:e~5 S~€~~e= :-r:Z:-" H:·:.:E :DEl~T¡Fl Ch:-: ON: T.. h..· r~o.. 111 DATE 'DRILLED:Oì/1SrSS-- ELEVA:'ION: 415::' RIG TYPE: 6i,'Hollow S'tem :licñt- -K'uo"ër - Litholo~ic Des¿~{~tion - .._- .'- .- f:i.i. Î . .". ~ ,. ,~. .. - -.. .. ,-, ,'. -- -. - . Sëmd ¡-tan, -:fi:ne to: ve=y coarse grained, gravel =are to common, poorly indurated, strong odor. . .. - . . , ...~.... . .. ,.' " ". .... ., .......... ... . G::-avel =:-a=:-e, , - .. st.rong odor. .. Sand, =e6tish-bro~n, silty, fine· to coa=se g=~ine¿, g=avel =a=e, poo~ly in¿u=a~ed, strong odo=:-. No s~~?le - trillet ?ast. Sant, tan 1 ~il':y, ve=y g=:-2.~nec, q=:-avel co~~on, :::'ne-to ve=y ccë.rse loose¡ st.=:-ong 060=:-, S-:=ong 060=. " c:i'- --....., ç;ra.ined, poorly b~own, sanèYI fine inå~=a~e¿, oåo=. coa=se ':0 . . San d , loose, tan, silty, ::ine s~=o:no odo::-, ç;rained, to metiu:n ~ - Sample Loc2.~ion G - Sample Ànalyzed Sheet 2 of 3 ~..~-:.~ ~~...."O~.. T't -,~ - "~.," -~ t -",-"".......:.. -~ -- --I -..::.....::>- ==-:. c· ~;.: r '\ ... DC ~ ~' . ~: - P..t-...RK A.. -....:::=:, P.S S 0 C =A :::-:SS I v. .~ - - -- C) .:::. - c..... ~ .;.J ~ ~ 0 -' c.. '-C I/) .. """"'.............- ~.... Eê..}:€~~:~ E!:- ?-:'~'? l'?~~ ~he~:-e~ DC: - It - --' .... v. t. .."'""-~.- - .........,. .!:... E - 0 E .r..' It «t ft - ~~~ ...,....... - :::IEl,:-:;-: C;..=: ~N : '}',1:, No. lA .... .... .Q;. :¡;;'" .;.-..J ÞC-C ---¿ ~...;....~ -' o I\) U 0 - ~ c. DÞ:::E DR::'LED: 07/18/88 E:'EVATION: 415± I - 0 ·w - t-<....oEE - u - ~ QWQ.Q.. Flic'ht . .. ;c.. : ;>~c.c. RIG ""',,-=' . 6" Hollow Stern Aüoe~ -' .E. .;.J .-- -- ~ .1\) CJ ~fXI V) Litholo~ic: Desc::-iption . , . . ~ - . o. 0 , . - . ' , , , . - · . : . . · ! -. .~Vê·ry ~ine to"ve::-y ·cbi:=së· g::'a.ined,- gravel . . . , :8 500+ 510 : common, st=ong~odor.. .. . .. . " - . .. - ~- ...-.... .. - - .. · , - , - - - -- - - - - - - . .... ... - - ~ - 1 - .. - - "-" - ..' .'- - . ] I l . ~ - . . I J - . - . . - - T.D. E5' ~ - Sam?le Loc~~io~ G - Sample Analyzed BO 85 '"-J Q) Q) '"-I .w c.. Q) Q ;:'.ttachmeTì~ n Sheet 3 c= 3 . ", - .--------- ~ ._-- . . -.-L- ~ - , - I.- . . - ..... .- . 1564~throubh 1578 Projec~: Future Homeless - .-=-.:=- " . ..-.... . Shelter I· Labora ton' No. ....-...-- ,."-- "'-. .----.--. RESULTS OF ANALYSIS .;1569 ,1D:. T.H.. =4-10' Benzene' Toluene . ~ -.-EÌ:h~'lbenzene . p m-X~'lene o-X:,dene . Isopropylbenzene TVH . I . TPH (No~ Diesel) ~1570 ID: T.B, ~4-25' Benzene Toluene EtÌJ3"lber.zene p, m-X:d Ene o-:~:d en e j scprc p;-'l benzene TVH T?H (No~ Diesel) =157: ID: T.E. #~-301 Denzene T?H (Diesel) ~J~:2 ID: T.1~. ~~-40' BenzenE- . TPJJ (Di e~:el ) -, '-- .,~ ... - -- -- . - - - .---- .- .----..- r-- .... '---." -._---_. --. . ."..- -., p ...,..... . .. ~:...:!.:: ~.:-?::.... ('0 ---_. ... . - ..... .:.r·f -. -.-.. ugm/J;m }IRL,ugm/gm 0.73 O. ) '.:-:::-" . 0: 7 2 0.1:-' 0.92: 0,) . 17 0,1 13 0, 1 2.5 0, 1 350 1 , ° 1,200 50 \.Jgm/gm J-lRL, ugmj gm 110 O. 1 510 0.1 ';50 0, 1 2,000 0,1 1,300 0,1 250 ú. J 17,000 J ,0 41,000 50 ugmjgm :-m:.., ugrr./ gm ,.- 0,1 ".l) XD 50 . . -¡Jgrn/ gw :-mL \:;ü.j g.¡;¡ ~;D O. 1 l ''"' 50 .:\ ..., ~1ethod of Anal:?sis: Ca.li f..ornia DOBS LUFT manua.l NRL = Ninimum Repo~~ing LeveJ TVH = To~al Vola~ile Hy¿~ocarbons T?H = To~al Pe~role\.Jm Hy¿rocaroons \.Jgm/gm = micro¡rarn per g~am XD = No~ òetec~eci S~ ~~~ S.,an Comer ~::::'acr.men-: "t" -, ~ Laborator~· No. 1564 throu&h 15iS RESULTS ~F ANALYSJS := 1"5 ï.3-·-ID :' -T .-H:."·.$ 5"~ 1'5 ' Ben::ene -TP-II,(Diesel) ugrn/grn ~D -~"D ,. - ~.~ :- ~ :- _: .- ;1574 ·I-D:-T.·H.;-.;75-30' Benzene -' TPH (Diese}) -u~m/grn KD XD . - . ~15ï5 !D: T.H. ~6-20' 'Benzene TT'H (Diesel) ugrn/gm KD KD ;1576 ID: T,}J, ;'õ6-25 , Benzene TPH (Die Eel) -ugm/gm KD ND ;:15;;. ID: T,H, :::£'-30: Benzene T?H (Diesel) ugm/gm i\D KD ~J578 ID: T.I-1. #6-25' ) Project: Future Homeless Shelt.er ~IRL, ugm/ gm 0.1 . :·5.(). -.,.... ... :-mL ,'u~m/ grn 0.1 50 ~mL I ugm/ grn 0,1 50 l'mL, u~m/gm 0,1 50 ~jRL, ugml grn 0,1 50 Be:-.=en€ ' T·T'r; (Di esel) '{T\ .~ l\D t.:gm/grn }-jRL,'ugm/;;Ül C,l 50 . ~Je...hnà of .'::' jal:,~sis: Califo::-nia DOES L1:?T manwÜ NRL = Minimum Repo::-~ing Level TPH = Tc:.al Pe!.role-ui.'i H:\'(irncaroons UEm/gm = rnicJc~~arn per ~ra~ ND = Kot de~ect~d Ç'...L- 0 .¿ WL""'" \..nv..vl St.an Come:- ~.":~2C!-L"'TH~~'!i":- ~ .. i I' . ! ~ to. l' ~ - t..' - - "'0 co C CJ fQ - r- E C;; ~. E - c::; '- (J - C! '- - 0 - w __ -..J U C. CJ - E ... ..:¡ t:I CJ V) - 0 , 0 . ~ .. ---- -- - '..~~' (. ... £"--~I __ ~ 0 v. ~ CJ ... I/) t.J ft' -. r:- ... 0 C';. '" -= . c. ~ l· , f-< ... E ~E CJ -C C. Co. Q., >. c. ¡;., = Ix - o. '- " ~ - . .. - '. 0 ; - , . , 0 - . , 0 - . - - . - - - ~. - . · , . 5 , · * - ::-ac:e . - - .. , -- .- - , , - 0 . . .- .. 0 0 · J-/ : " - 0 1 >.<. _~: þ,o . , :.... > . . # ... . . , , . l · , ' J~. 0 o. J ... .:' : \" ~... 1· .' . l'-: ..' . .= ]... 0 . ~ ~ l :-' I 0' J.... 0 . t .--: I. ' ï ' ,. I:, :: J ,. : * J' . : 0 I',' ' ~ .. þ ~. .. 10 e 25· .. , - -~ '"' 55 -"J Q) C) \;.¡ 20 '"' J." "7::; , -- 25 o :2.05 o 3D G ::5 18 ~o .J '. " ~ -:' '.~ -==:-ace G ~ '!"'¡ - . -. 40' 1.200 ONo: Diesel) - ~ I , 41.000 GNo: Diese:) :2 None Detec.ted . . None Detecteò ! ..... -. ~ - ... . .,., -- :.. ~ ~. - - - . - -:- "'- :- ---..:-~.:" ."'--... . --- - - ....... _J'. __--' - LO:~~I~N: ~2ke~~fie}è ~~~eJe~~ ~~e}~e~ ---- E:~::: ::'z:!~~:?: :;'..:-:~:\ : ~;.~E ~~:~~~~: 07/J~/8r RIG Tl7E: 6"HOllow S~em ':"":-: t~· ~. ~ Z::';:V;:::lON: 41:'::' Flic:ht Auoe:r- Li~holo~ic Desc=:-i~~ion r .. '" . -. '.-' o .,.. Silt, brown, sandy, fine to rned~um grained, gravel co~~or, poorly ind~rated, rnois~, slight odor. .;. , - . ; ( Sand, tan, silty, very fine to grained, ;ravel cOIT~on, loose, ve=y coarse odor, . , Mois~, s~=ong odor, Silt, bro~~, sandy; fine ?oor~y inâ~rated, mo~s~, to me¿i~~ g=a~ne~, s'":.=o~; oòo=. Sil~, tar., sanèy, fine to ccarse ~rained, s-=avel rare, 'pocrly in¿~=a.~e=-, s~=ong ò:5.c=_ ··Odcr. .. Sand, tan, silty, very fine ~o very coarse s-ra.~neQ, gravel common, loose, odor. . Silt, tan, sandy, very fine to very coarse c:rained, Doo=lv inõu:r-2ted, sliaht odor, , x - Sample LOc2tion e - Sample Analyzed A t.~acÌ'.ment. F . I. -ì -"-- -- ~ ,- , J-_.... ..... -' to' - cot: ~ § C· .... .::; (> ....u - ..J 0 . · . . -- ~ r - · · . - , , · · - . , " : "5 - . ... " - . , - · . · - , . . t -. .~ : .~ " ~:.' · '.:. 0 ~ l... Q) -: .'. Q) \ò.I 10 15 -.I' I ' J. ~ ~ ......' -5. T' ' 8 J" , i· . j'.' . I . -., I ì' : ' I ï ' J ~ J 1 ~ 20 -- J'" --' 30 ':1- -'~ 40 ~ " ~ ,j' § ~ ë: ~ t.. I\: _ _ I:'.c tI' ~ ~, -~. ~'~ - ~ - ... I ~ ~ '-; It c:- I ~: ~õ..,-, - ~-....,; ~É.~I ;.;. ~ ..... _~. ,"'0_>" Q. Q. \. It¡ :.-.!! : , V) .- - I I /: h .. - (1 ... o o None Dete::ted . , * -0 . * =.:-ace G ~=a::e None De'tec~ed - T.D. - 30' - - - -- " .:. ..,¡--~...~--. I .j ~ ,-- -. - - - -- C'" .r-_'::';' ~ V""-' _J-... __ "':'--.J LC:;'..7:0N: ?::'''~~!"":,: '2 ~ ~ !--?::'~~ ~ ~~ ~ ~~€ ~ ~ e:r- :-::=~ ::::..: :=...::!~::?: :;::": 81,: "'" hc' . ~ ;:)~.:'E - :::JR.::':::::>:. ,0 Î /} 9 /88 r::'EV A:': ON: 41 ~: I -RIG. TYPE: 6_~~ ·Hol 1 0'\0.: Stem· Fli-o-ht . Auc;.er Litholo~~ç Desc~ip'tion ..Sil.t, ~-bro\oin, - sand v , -verv -f ine to ve1"V ooa=se c=aine¿, P~0=2v In¿u=ated,'molzt, ~ - no'o¿c=~ -- .. Sand, tan, silty, fine to ve1"Y ooa1"se 's=aineè, s=avel =a=e, loose, moist, no oòo=, No odo=. Si2t, b=own, sandy, ve=y fine to ve=y C02=se ~=~~ned, poc=:Y in=~=~~e¿, no occ=. No 060=. .... I....· . .. No oÒo=. . .. ~ - Sam?le Loca~ion G - Sam?le Analyzed À~'t.acr.rnen~ ..... \-::: --- - --) - I'. - -- -- --~ e 5 None ·Sligh-=. odor. De~ec¡.ed , . . . e None No oòor. ~:::ace De.~ec~e¿ . .' I' I .=. i 1..-' - .... Co DO C ~ c E -- '-' :; C· - ~ - 0 - ,..J U .c:.. .... , E:' ...;¡- ftI- tI) 0 , . - . , , " , , , - . , - , - '.. ~ , 5 -' , . -' f""" : l:" :~ -, . . 11~, '.... . '. , . , ~ -. . . !l) Q) \ò.¡ 20 ~5 1i..'., " , . ï '. .,., - \ ' ' , .:::1-·- .:.J -)'. Q" -1 " . ~ I.. , l· , l,> .. -\.. ' -¡, :: 1~ ~ . " -I ..' ,"" -\.';:.' ~.': ..'. ....: J:' ,~", ] ,. ' ' \ " _, c J .', : "/ J. -: '. !', '.: ..... '* 20 25 30 ~5 I 40 T,D. - 40' l t>' t· .: ; E. c=7\ "tì i _CíCV1 1'0 _ .... r:í.J:) I/) CJ t.EIr:_Wr.- C;-'- -"C It, ~'t:- _ 0'" t,; .._ I-<~OEE CJ CJ ... c.. "" ... : '"' ,~. c;.. Co ::.:. ='r¡;: .. , ... ::-ace . . , .... .r_~ ~ ~ ~ ::'r... -=:::"'s '* o - ,. --. .: ----.: -:.. ..... - .r-__ ""_ 1.0:;":-::: ON: E2 \rø~~:= i e1 è _?:'~'2: e ~ ~ ~~'21-: e:- -=--~~ H::'~ :'='D,-::;-: :;.=: ~~\ : ':' !-:, J~c, 6 E:'EVA':'lON: ~ 15 ~ I Flic:mt Auaer 'k o D~':'E DR!:'~ED: 07/l9/88 RIG ':D.'?E:· 6" Hollo....· Stem Li~holo~ic Desc:::ip~ion ,. sri; ~, d.a::.k..brown ,"sane5-y" fine' to' coarse grained, poorly indurated, moist, no 'odor. .... .. .,." Sand, tan, silty, very fine to very coarse grained, gravel cornmon, loose, moist, no oèor. No sravell no oèor. Silt, çree~ish-=rown; sandy, fine to coarse Sra~ne~, poorly indurated, no oõor, - -', Silt, tan, s~n¿y, ~ine to very sraine¿, S~2vel oo~~cn, ?ocrly oàcr. coarse . - - :-:lc. --:.= E. -=. e:: 1 e None De.¡'ec~e¿ ~ , No oêor. ~ - Sam?le Location G - Sample Analyzed o G 1~ on e De.~ec~e¿ À't~achmen~ F 48 o " - ....- _. .- - .. - '\ ... \' ,- '--- ,.... -:-.,....-..,.. -- ~ ... .... - -, ... . ,. . -:: g No, b 5øv..,..,., -:-: ~. . NCJ.... 4- GRoU...-r 5(,p~Acr . ._ t .. rLÃ~P;'';'(. ò.:;;.~·,,;;~ : -. ~-.ø£ ï:AÑÞC B.AC.Ki;~7.L.-· .---. ;.~--r---~-¡-- "h ': I T....cor' I I I I ~SO'" - I I - u....... 'ANK I L..._._~._____ -:--~__J ..). .... / , ~. .:.'. I " , 1,'2.00,:5' ... 1::: ~ "- \¡ tt .' . . . 'T",..c.z .1:> \ < 0 V \-; ,( \ .... ,:, - -..........::: ;':r\ ~ ~. \/. < ~o ~ _ it: t:: \....\.- ~ ~ .... ,~ \ i'~: t::: N~r ,-¡-\ (Ñ.D.'7 "fg ---¡ j .. .C).- ~ {) '\J.J -\,. ,', .~ 1- ~ I" <r .. ~: <: 0( ....¡ - <.: <::: .. - I.c 1-" ~ ~ \,. .:.. Ie " I ...: -17~ - < c: a h: \..) .. :... t;. « ~ t( <l \, , , J r ! ( \ .\ :\ C::'/""-IV -'J- ~¡-; J ~ , \ '" " +J,OO~-ID5 I - N.D. - lZ ¡.,.I.D...:....S CONTAM/NAï£D / ARIEA ...18 / / N.D.-ï6....c.r /. / ""'- -- "',D, 1 ïlt.c.r. ï. D. =+0' -D .,' , .7:..:). = +0 W. H, 5C.AL.F: : PARK AND AUI:> us.... I" , =5 Assoc.IA TE'.5 I!!BB ^--,..,.."...,.,~~,_ r fVOItTM ~' . ,. .- -. . , , ID J5' .... -.. h. to.. \ J ~ 20' ., -' --~ - 30' :=5' 4D' -;) -'""'\- -,) ":I i r,r..-=-,,:,-,,~ ~ - - =..x'7 é/"'~ ..Q~~ L Q^'7"~,~/I,'~-:-/=-t,-1 ,- .. ~/:-Z IV' C', '? ~ ï: H. No. :, --S __ .".-. I, ~ /' .. ?,'1 '" I __._L~._ ~ I '" r-i-~ <~ \ .: I r-- - - ï 1 .... all ). I '1- .I.¡.J 15 I ( t I ~ : I ~ê \ ~ ' 7:J..!. Nc.'¿'~ / 1 ~ I & ;- r ~ -~~-11 0, <:: v ~ -- J' \ ~ I ~ : I -< ~~¡....) ] C) i~"'Nk-. I . \ U I ~. ~ \ 1 '-_ _ _ _ -l , \ r-¿Õ.<.CK,c/:..,:.:-=-J 0· / \ t-=_____ / "".. / "'- -. --"" ---- SC.A1-E: /" = S' W. H. PARK AN:> As~oc.. -Aut;us, /988 AïiACI-/ME:Nï J-I ~W·' .',.... /.' - ~ _ ~ r- .=',....- " J: J..!. No.5 &1 I "L.S - . II ,I -,,....... ........-" ."·c' (_~'U_) "'".... J"."" SOu 1. '1é:f?N ,., . "CI,-,C i----- , I ------. I" -----, ------ . ------ - . I" 5, T! No. I --------. ---------. r,. 'Wt , --------. ,. J "f- . ~.'.!~. :e-"~""""..!..'...)JJ."'~ ----.:--- "-"" ';;;;~~::::-:~h~: I----~~, ,.... - " Er. '¿,--.~ .~:!.~~" '.------.------ - ,--"~ ,,~~'::~..-.. "~ "...... t "Jr Æ r..:...r:.... /It.... . '---- f ,." . ,_, ; ,~ '_h . I I I I ( II .' I I,··.. ,,-.. -. ..: ,II~"'/ 11" 't I? 0_1 D ~ J I ·~t;\:~/ -\-- '.., ..... _ _.IM". ... I L_~~_ ~....._.~~. .=='~. .....~~...!D 11.::" þ... ....... t::'i'r ~'"'''' ,..,., IV_, S'TC No.2 (:::1.·':~';·~r. .,. & '-'-'-")-0'-' ~ . ~--, .,..-" 'v" I --.:!..-- . __, "._a. I....I~ ..a..... .~. ..........' -..., ,...., ....... .,1""·.... ... ·1/& r 1".v,,:",·..... }.," ~"..: _r.::::::.:.___-' .-, _..- ~.,w.,.J'~ ~_..t " . -;;;;---;;-;;;;:J ... --- \ \...C £AST TRUX TUN A\/ENUE: .."r..... t........" Gvr1,.1--,,' ~ ,"'""U'__ \,) '"'H.''' .:~~..:,.~ ~,.~:. ~:: ~ 1 r{ J-,; (I) ![I -.: }¡ , . ( ,,- J, l ""'''''tI'''' ....t ~ J~:~.~:... ~ · ........<0041 ._. : 5' ...:'. ...........-, c.._(_~./ "-_ ,..,. ..... ., .,..../ ." '. ;-.J .~ t ----'.. .~_..- Will"" H.. _~~~... -!.~jC SIH Mr.i FUTunE 'Wf.lr.-Lfs~1 1530. '60(1. tr"", (r '., , 0 e"coVr(t /) Cð\ ....t· ....t 10. .. :" WILLIAM H, PARK REGISTERED GEOLOGIST NO. 227' 3040 19TH STREET. SUITE 10 BAKERSFIELD. CALIFORNIA 93301 TEl.EPHONE (8051 327-9681 August 5, 1988 Mr. George Sweet P. O. Box 80963 Bakersfield, California 93380-0963 Dear Mr. Sweet: In accor~ance with a request by Mr. Roy Hall of the City of Bakersfield, Community Development Department, a site characterization study for two underground tank locations situated on the future homeless shelter property has been performed. The property is locateá in the southwest quarter of Section 28, T.29S., R.28E., M.D.B.& M. in Bakersfield, California (see Attachment A). It is comprised of the property designated by 1530, 1600, a~d 1610 East Truxtun Avenue. Two 1,000 gallon gasoline tanks wereilocated near the northwest corner of the property near the northwest corner of the existing building at 1530 East Truxtun Avenue. This will be referred to as Site No.1 (see Plate 1). One 550 gallon diesel tank was located just east of a shed that has now been removed. This will be referred to as Site No.2 (see Plate 1). On May 26, 1988, Apex Environmental removed the two tanks from Site No. 1 and the single tank from Site Nu. 2. Soil ¡samples were collected at 2 feet and 6 feet below the bottom center of each tank. Gasoline contamination was found in all four s6il samples , from Site No.1. Total petroleum hydrocarbon concent~ations ranged from about 800 ppm to 7,000 ppm. Contamination was a~so found below the diesel tank at Site No.2. Total petroleum ,hydrocarbon concentrations were 10,756.56 ppm at 2 feet and 11,017.11 ppm at 6 feet. On January 20, 1988, Mr. Hall received a letter from Mr. Bill Scheide of the Kern County Health Department requiring that a site Mr. George Sweet August 5, 1988 1- Page 2 characterization study be conducted on the property to delineate the vertical and horizontal limits and the degree of contamination. The sediments on the property are composed of alluvial deposits consisting of silts, sands, and gravel. Based on Kern County Water Agency data, the depth to the primary groundwater table below the property is in excess of 200 feet. No perched groundwater is known to exist below the property. Two test holes were drilled at Site No.1 in JUly 1988. Test Hole No. 1 was located just west of the north end of the former dispenser island location as shown on Plate 1. Test Hole No. 1 was drilled to a depth of 40 feet. Soil samples were collected at 5 foot intervals starting at a depth of 5 feet below the surface. Field screening indicated the presence of significant levels of gasoline contamination throughout the 40 foot depth of this hole. An attempt was made to drill deeper, but the drilling rig could not penetrate any further. A larger drilling rig was used several days later to drill Test Hole No. lA. Test Hole No. lA was !ocated about 6 feet south of Test Hole No, 1 (see Plate 1). Test Hole No. lA was drilled to a depth of 85 feet. Soil samples were collected at 5 foot intervals starting at a depth of 45 feet below the sur=ace. Samples were not collected above 45 f~et because the samples from Test Hole No. 1 should approximate the corresponding sample depths in Test Hole No. lA. Again, field screening indicated the presence of significant levels of gasoline contamination throughout the 85 foot depth of the hole, All of the soil samples from both test holes were analyzed on site with a Gastechtor Oxy/Surveyor and then sealed and placed on ice. ,^, " , , ^ 11.4 U C ^ C v Mr. George Sweet August 5, 1988 Page 3 Selected samples were delivered to a state certified laboratory and analyzed for B.T.X. and T.V.H. (see Attachment B). The 5 foot and 25 foot samples from Test Hole No. 1 were analyzed and the 45 foot, 65 foot, and 85 foot samples from Test Hole No. lA were analyzed. The 5 foot sample from Test Hole No. 1 reportedly contained 4,600 ppm T.V.H. and high levels of B.T.X. The 25 foot sample from Test Hole No.1 reportedly contained 380 ppm T.V.H. and moderate levels of B.T.X. The 45 foot sample from Test Hole No. lA reportedly contained 12,000 ppm T.V.H. and high levels of B.T.X. The 65 foot samplé from Test Hole No. lA reportedly contained 400 ppm T.V.H. and moderate levels of B.T.X. The 85 foot sample from Test Hole No. lA reportedly contained 510 ppm T.V.H. and moderate levels of B.T.X. Attachment C lists the results of the chemical analyses. Attachment D shows borehole logs of Test Hole Nos. 1 and lA. The chemical analyses of selected soil samples from Test Hole Nos. 1 and lA indicate the presence of high levels of gasoline contamination at depths of 5 feet and 45 feet and moderate levels of gasoline contamination at depths of 25, 65, and 85 feet. Field screening indicated moàerate to high levels of contamination from top to bottom in both test holes. The tû~ehGle logs in Attachment D show the values obtained with the Gastechtor meter as well as notes regarding hyàrocarbon oàors. The values listed for the chemical analyses (Attachment C) should be consiàered minimum levels since gasoline vapors can escape in significant quantities prior to analysis even with strict preservation techniques. Given the current data, the total depth of contamination cannot be assessed. A deeper test hole is needed to acquire the necessary data. Also, two offset holes are neeàed to determine the horizonta~ extent of contamination. A proposal will be made under separate ,., ,. . . .. .. ... .. - .,. Mr. George Sweet August 5, 1988 Page 4 cover to drill three deep test holes to a maximum depth of 150 feet each. The first test hole would be drilled roughly between the two tank locations similar to Test Hole Nos. 1 and lA. It would be drilled until the maximum depth of contamination has been exceeded or to 150 feet, whichever is first. The two offset holes would be drilled to the north and west of the first hole. The exact locations would depend on the results of the first hole. The depths of the offset holes would be based on the same criteria as the first hole. Data provided by these three proposed test holes should be adequate to delineate the vertical and horizontal extent and the degree of contamination at Site No.1. We feel it is unlikely that contaminants exist below 150 feet, but we can't be certain without drilling. Also, we feel that the 85 foot total depth reached so far does not represent the total depth of contamination at Site No.1. Three test holes were drilled at Site No.2 on July 19, 1988. Test Hole No. 4 was drilled through the center of the former tank location (see Plate 1). Test Hole No.5 was drilled about 12 feet east of Test Hole No. 4 and Test Hole No. 6 was drilled about 9 feet north of Test Hole No.4 (see Plate 1). Test Hole Nos. 4 and 6 were drilled to a depth of 40 feet each and Test Hole No, 5 was drilled to a depth c= 30 .c:__.... .&.\W~ "-. SGil s~üples were collected from each test hole at 5 foot intervals starting at a depth of 5 feet below the sur=ace, All of the soil samples were analyzed on site with a Gastechtor oxy/surveyor and then sealed and placed on ice. Selected samples were delivered to a state certified laboratory and analyzed for T,P.H. and benzene (see Attachment B). The 10, 25, 30, and 40 foot samples from Test Hole No. 4 were analyzed. The 15 and 30 foot samples from Test Hole No.5 were analyzed. The 20, 25, 30, and 35 foot samples from Test Hole No. 6 were analyzed. .. .. ,.. .. . - .. - . -.-' Mr. George Sweet August 5, 1988 Page 5 Field screening indicated the presence of gasoline contamination (gasoline odor, relatively high meter readings) and the chemical analyses confirmed this. The 10 foot sample from Test Hole No.4 reportedly contained 350 ppm T.V.H. and 1,200 ppm T.P.H. (gasoline). Moderate levels of B.T.X. were also detected in this sample. The 25 foot sample from Test Hole No.4 reportedly contained 17,000 ppm T.V.H. and 41,000 ppm T.P.H. (gasoline). Very high levels of B.T.X.were detected in this sample. No benzene or T.P.H. (diesel) was detected in any of the remaining samples submitted for analyses. Attachment E lists the results of the chemical analyses. Attachment F shows borehole logs of Test Hole Nos. 4, 5, and 6. Mr. Stan Comer, chemist at SMC Laboratory, reports that when an analysis for benzene is performed and benzene is detected, toluene, ethylbenzene, xylenes, and isopropylbenzene must also be reported. Hence, the analyses of the 10 and 25 foot samples from Test Hole No. 4 reported all of the B,T.X. constituents rather than just benzene. Mr. Comer also stated that the T.P.H. values reported for these two samples are probably elevated because a diesel factor was used in the calculations instead of a gasoline factor. However, the B,T.X. and T.V.H. values are correct and the analyses do indicate gasoline, not diesel. Field screening of the samples from Test Hole No. 6 indic~~ed ~he presence of contamination at depths of 25 and 30 feet (see Attachment F). Although the laboratory reports do not confirm this, Mr, Corner stated that some contaminants were found in the 25 foot sample, but the levels were below the 50 ppm minimum reporting level utilized. Based on the results of this investigation, the vertical and horizontal extent and the degree of contamination at Site No. 2 can be inferred. The interpretation presented below combines the information provided by both the laboratory reports and the field screening. Two areas of contamination are defined as follows: \AI I I , I ^... " "A"" " Mr. George Sweet August 5, 1988 Page 6 (1) contaminated area - T.V.H. values generally greater than 100 ppm, and (2) slightly contaminated area - T.V.H. values generally less than 100 ppm but greater than 0 ppm. The contaminated area extends from the bottom of the tankls backfill cavity (depth = 8 to 9 feet) to a depth of about 28 feet. The slightly contaminated area extends down to a depth of about 39 feet. A cross section through Test Hole Nos. 4 and 6 showing this interpretation is presented in Attachment G. The areal (horizontal) extent of contamination is expected to be oval in shape reflecting the rectangular shape of the tank's backfill cavity. When product relea~es occur into the backfill, the fluid will migrate rapidly to the bottom of the backfill cavity, spread across the bottom of the cavity, and then continue to migrate downward. It appears that the contaminated area shown on Attachment G has not spread much beyond the outline of the backfill cavity. Attachment H shows the areal extent of the contamination at a depth of 20 feet. The areal extent of the contaminated area at other depths would be of similar shape but of lesser extent. Three possible remediation measures for the contamination at Site No. 2 are excavation and disposal, vapor extraction, and biodegradation. A no action alternative is not recommended because of the high con~amination levels, particularly B.T.X., found in the 25 foot sample from Test Hole No.4, It is estimated that about 80 cubic yards of contaminated soil exists in the contaminated area defined on Attachments G and H. This assumes that the backfill cavity was backfilled with relatively clean soil as the 5 foot sample from Test Hole No, 4 indicates. If the soil in the backfill cavity is also contaminated, about 100 cubic yards of contaminated soil exists. Excavation and disposal at a permitted disposal site is probably the most practical solution because vapor extraction or biodegradation WILLIAM H. PARK · Mr. George Sweet August 5, 1988 Page 7 would require at least several months to complete. The costs of these three methods are expected to be similar. Proposals for remediation should be sought from appropriate environmental contractors. If you have any questions regarding this report or further work at the site, please feel free to call. DRS/TFG/jk Yours truly, 1Ý{¿av¡2.~ '* Duane R. Smith Registered Geologist State of California No. 3584 zI~ J ~ Thomas F. Gutcher Assistant Geologist WI!! lAM -{_ PARK '~ ':~J .~..-~ 1 "·'-"---':;_-I-/Irr-..r-t~(" ..:-;: " _ _ . ~~D¥ r~P""__' '- " ___ L'~Z !. -~. I. . " i..::JjI ¡, ~, \ Jp H~, . ~. :-' :'r T r- /\.., I 16 '1 f-!, -j ~l\I>slr.. ì -----:;-; ...,.. ,-' "C/}J ~ ~ _, . '. r¡¡;:::~~~:...J,. ~ ..-t.. ~~' :'" - (11 - fl f ji7 '\! ~~~I' ) ~ .~/ M~ - \0~4 - '~~' ·----~,L", ~ . '-1\...-' I --- i;;;? ¡..? .....;:; /7' I f-'^ '- t'0_ ~ J:llÆJL ì .' r,¡': .-::' ~__~ " - -""~ ,__iIo f.~~1 l"-...... --.i , I ~ .~ \~\'tT? ~fr-::r¡ -..... 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IIye-ln. 7'f /,... .... MAP S h II Ii lei-=;'=-- I o!.~hUler~--· ¡. C poroM.II...£.i'i _ ,. '. AVE: II ___ ~ m . I ~ ~ ï~= \ II ::'.,E:;;'" : ~ -..... FUTURE HOMELESS SHELTER SITE _Hie:;:;:' O=- -L ~~"O~O¡I ~ I~' B~~~F~~TUN, CÃ~=Ià = =- ..... - . . I,! I I- I , 'I . I \ . Ii :, I I j l¡'m ~ ~ 33 Ii, "'-.. :' RG 11",.., I/";¡I:" ~ u ~ =- ~-;:- ;/If}¡t'''1.i'Øj '""'~ I ~t-.þ ·-I~':· i~g ,~~ <1::V'r:~ SCALE: k' I III'A W' f ~ ~ 11~r-¡r~ _ · ~UD r ;., .. I I ~I :1: : lI~i II II I -'.j - F"~ ~' F-n~QD:~ ~1'1'I-ri-H39~' ---If''' 1'/ ~~I!I'áËD l2._ _ ~ _ . 11._ .f - . ~ _ BRUNDAGE: _ ~t86 ~:"'''''ê ! . J88 :. ..:------ ·--385 L--.. -+ "'" [/ . .. Ii Ii::;r--- ;JSewa¡e, 1"=2000· Source of Base Map: U.S.G,S, Oil Center and Lamont 7! Minute Quadrangles. ð CHAIN OF CUSTODY RECORD Location of Sampling Name: Fu T£-(/'<E ilo/11£l:.E'5S SIIr::LTf¡R Company: CITY 0/= /S~IZ.~FIEill Address: /530 IbOO /{,ID £, TRtA.I(TUAJ I ï íSIl k Ell. 5 F IEL D j C Ii Telephone: ( ) Bill to Property Owner ( S li H th d ~PL 1'- 5"p /\J Collector Name: 7; ¡"VI 6/A rc HE 12... ~ nR e o : I C>O amp. e .ype: I reserva on e o SI 0 Sample No, Date Time Description Ana1vsis ReQuested Laboratory No. r: 1-1. jf I' D') II ~/S K S 5' ") 2- S-" s' fl ¡1Ú~ L E ~ -- F O,lZ.P1 €' .<!.. ß, .r: x. fr;lJ, H. \6~4 - \S~ 6.4S '''¡.vl<. S,n;=. T. N.:It' / fJ ~7 jM/8'6 <-; fS-; 65; 8s~ SArY1/'LES-Fol'</t1EP-. B,T X, t TV H. \ SlðG - \ Slð 6 'J~ ÎÍ1/v I<.:. 5 I r£ T. Ii IF 4- ?7 / ¡:}/~g S /O~ '2-5> :?o' 10' $/ifHPLES- - °H i ß6NzENE 15<09 - \S7' J J.J -¡;, _ FeJ/:!/YlBæ. D Ir:;->f=-L- '..1N/C.. S il£ / , / I . , T: H, if 5' 0'7/19/68 ~ 15" 3 D / S/l/?1('L£5 - FDart1G-¡e T: I? 1-1, I /3 £I\J~ENG D: € SE L-- --r/:1f\//< S I r€ { ) S ì 3 -- IS7 r: I-I, -iI G '/ 20~) ZS~ 30j 3Ç' 511,YlI"'L€5- . /3 £'¡V-èEN£' 07119 /~~ < FO/?--ß1£'R-. PI(: ,:>r:-L T4NK-. S Ir£ ¡; P /-1, ~ I c~:ns - 'S7~ p Client Name: 6r:::012-6E SC.,iJEET Company: 51'1 rY} E Address: PD. Box 80'l{,3 BAIL"-P-S FIe Lo, CF1 93380-096~ Telephone: OšD5) 39'3- 637D Bill to Client (x() H th d K~€"p C L D Company: W,H. Park & Associates Address: 3040 19th St., Suite 10 Bakersfield, CA 93301 Telephone: (805) 327-9681 Bill to Collector ( ) S 1 T 50 L ti s ~ 2. Y ~elinquished Company: U 1-1. P I< /é. f" fJ.s S Dc. Company: <.)\N\.O Company: Date:o'J 12..0/8'8 Da te: ì -?() -<is<6 ~elinquished By: ~eceived By: Date: ~ecei ved By: Company: Date: ~elinquished By: Company: Date: ~ece i ved By: Company: Date: WILLIAM 1-1. PARK AND ASSOCIATES Sheet / of I .- __SMC Laboratory " Client Name: George Sweet Address- P.O. 80963 Bakersfield, CA 93380-0963 Date sample received 7-20-88 Date analysis completed: 8-02-88 Date of report 8-02-88 Laboratory No. 1564 through 1578 Project: Future Homeless Shelter RESULTS OF ANALYSIS #1564 ID: T.H. #1-5' Benzene Toluene Ethylbenzene p,m-Xylene o-Xylene Isopropylbenzene TVH ugm/gm 62 270 96 510 280 42 4,600 ~1565 ID: T,H, #1-25' Benzene Toluene Ethj-lbenzene p,m-Xylene o-Xylene Isopropylbenzene TVH ugm/grn 3.3 20 11 43 25 3,6 380 MRL,ugrn/grn 0.1 O. 1 0.1 O. 1 O. 1 O. 1 1.0 MRL,ügrn/grn 0.1 0,1 O. 1 0.1 O. 1 0, 1 1.0 Me~hod of Analysis: California DOHS LUFT manual i'JRL = i'1i nimum Reporting Level TVH = Total Volatile Hyàrocar~ons ugm/gm = microgram per gram ND = ~ot detected ~~ Stan Comer Analytical Chemistry 3155 Pegasus Drive · Bakersfield. CA 93308 · (805) 393·3597 P.O, Box 80835 · Bakersfield, CA 93380 " Laboratory ~o, 1564 through 1578 RESCLTS OF A~ALYSIS :1566 ID: T,¡¡, :lA-45' Benzene Toluene Ethylbenzene p,m-Xylene o-'~ylene Isopropylbenzene TVH #1567 ID: T.H, #IA-65' Benzene Toluene Et.h;d benzene p,m-Xylene o-Xyl.ene Isopropylbenzene TVI-I #1568 ID: T,H, =IA-85' Benzene Toluene Eth:dbenzene p,m-\"ylene a-Xylene Isapropylbenzene TV]] ugm!gm 320 1,700 380 1,700 830 , 71 12,000 ugm/gm 3,5 21 13 56 31 4.5 400 ugm/gm 1.7 11 11 48 32 5.0 :;10 Project: Future Homeless Shelter ~1RL, ugm/ gm 0, 1 0, 1 O. 1 0, 1 0, 1 0, 1 1.0 MR.L, ugm / gm 0, 1 0,1 O. 1 0, 1 0.1 0.1 1.0 MRL,ugm/gm 0,1 0,1 0, 1 0, 1 0, 1 0,1 . ~1 1. . tJ :-lethod oÎ ."'na17sÜ:: Ca_liforiì a D()iJ~j Ll'FT manual f'mL = :'ij nim.¡m Reporting Leve TVi-! = To1'.a1 \'olat.i le Hydrocarbons ugm/gm = microgram per gram ND = Not detected \~~ Stan Comer o 10 - . , 15 -- - -. - , - 5 -' -' - , - - . - - - , . - . . - " o .... ooc o e ..... =' 0...... ..:: 0 ,ojU .... - . . . , . . · . . . , · J,J _... ø· . Q) Q) ~ 20 - ..c: ~ - 0. Q) - . o 25 - 30 - ' . , . (t . . tþ .. - - - - - . - . o' 0 . - - . - . - . - ". , , , · , , , · . , , . I/ .c ,oj 0. ~ Q aJ ...... 0. e co t1) 00 c: .... "'C co - ~ ë cz:o. 0. W...." ~ ~ OJ ::r: LOG OF TEST HOLE ~ 1/ .5...... C...... aJ Q 0 0 I/ ............~I/ Q ",~"","" ,oj ~ "' OO~ o co u E-<.....Oee 0""0.0. >"g,o.c.. =rx"l 4,600 380 365 - 35 - * 500+ 40 - -. --. . - - . . . . . , .. @ 177 * 170 - * 170 * 365 e 250 * T.D. - 40' * 475 w. H_ PARK AND ASSOCIATES LOCATION: Bakersfield Homeless Shelter TEST HOLE IDENTIFICATION: T.H. No. 1 DATE DRILLED: 07/13/88 ELEVATION: 4l5± I RIG TYPE: 6" Hollow Stem Flicrht Auger Lithologic Description Silt, brown, sandy, fine to very coarse grained, poorly indurated, strong odor. Sand, tan, silty, very fine to very coarse grained, loose, strong odor. Moist, strong odor. Silt, light brown, poorly indurated, strong odor. Sand, tan, very fine to very coarse grained, loose, strong odor, - Silt, brown, sandy, fine to very coarse grained, gravel common, poorly indurated, strong odor, Silt, brown, poorly indurated, strong odor, Silt, brown, sandy, fine to very coarse grained, gravel rare, poorly indurated, strong odor, * - Sample Location @ - Sample Analyzed " ~ u .... CQ c: 0 3- .-I 0 .-I .c 0 .¡,.¡ u .... ~ 0 - , · , - - , - , 5 - - - · - , - - · . 10 · - · · , - · - , - , , - . · 15 - , - ',. · ~ - . ..., . Q) · ' <1J .. .. tt .. ~ - 20 - - .c: ~ - , . a. - · <1J , Q , - , 25 - , - , - , - · - '. . · . - . 30 - · , , - . , · - - . . - 35 - - -. " 40 -.. . · . , - . . . · .. LOG OF TEST HOLE w. H. PARK AND ASSOCIATES ( ) I/) 00 1/)-=.-4 C .c ...... ( J §..-.4 C) ¿.J 0. '0 o I/) rø -.. ,...¡.......cl/)C) Q) QJ E rø ~ w I'( .... 0 , ex: c. .¡,.¡.¡,.¡ rø CI/3'O (\ 0. o rø u w-' E--<..... 0 E e ..... QJ o wo.o. 0. ¿.J :>~o. ; . E QJ rø :: :::'rxr tI) T.D. - 85' " . LOCATION: Bakersfield Homeless Shelter TEST HOLE IDENTIFICATION: T.H. No. lA DATE DRILLED: 07/18/88 ELEVATION: 4l5~ RIG TYPE: 6" Hollow Stem Fliaht Auaer - Lithologic Description Silt, brown, sandy, fine to very coarse grained, poorly indurated, strong odor. Sand, tan, silty, very fine to very coarse grained, loose, strong odor. Moist, strong odor. Silt, light brown, poorly indurated, strong odor. Sand, tan, very fine to very coarse grained, loose, strong odor. "Silt, brown, sandy, fine to very coarse grained, gravel cornmon, poorly indurated, strong odor. Silt, brown, poorly indurated, strong odor. Silt, brown, sandy; fine to very coarse grained, gravel rare, poorly indurated, strong odor. * - Sample Location @ - Sample Analyzed 40 45- - , 50- 55- +J _ aJ aJ _ ~ 60- - - :;\'. tJ .... OOc: .:; ~ 0.-4 .c 0 .u\..J .... ~ . .. . - · - " . '. " .@ o . - . - - . .. · . - . . - . ' - · - . - · · ..c: +J - .' .' ~ - o · - · 65- . . , - - · " . - · , " , , · · , . · · . · . , · · · . , · , " · . . , · · · en .c .u a. Q) Q GJ .... a. E (1 rJ) 00 c: .... -0 (1 - GJ E c::: a. a. 1.1-, GJ .u GJ :t: LOG OF TEST HOLE Q) en~.... Oc:,...¡ GJ GJ 0 I/) ........~enGJ (1 'P'4 m_ .u .u m 00-0 o (1 U t-o....;°ee oWa.o. >;:'0.0. ::::'rxr 12,000 400 " · ' - · 70 - · * 500+ . - , · , - .. , - , · ' ø · 75 - -. , . · - · ' 80 - .,- - - 500+ * 500+ . * 500+ @ 500+ * T.D. - 85' * 495 220 w. H. PARK AND ASSOCIATES LOCATION: Bakersfield Homeless Shelter TEST HOLE IDENTIFICATION: T,H, No, lA DATE DRILLED: 07/18/88 ELEVATION: 415~1 RIG TYPE: 6" Hollow Stem Fliaht Auger Lithologic Description Sand, tan, fine to very coarse grained, gravel rare to common, poorly indurated, strong odor. Gravel rare, strong odor. Sand, reddish-brown, silty, fine to coarse grained, gravel rare, poorly indurated, strong odor. No sample - drilled past. Sand, tan, silty, very fine to very coarse grained, gravel common, loose, strong odor. -. Strong odor, Silt, brown, sandy, fine to coarse grained, poorly indurated, odor. Sand, tan, silty, fine to medium grained, loose, strong odor. * - Sample Location @ - Sample Analyzed '} LOG OF TEST HOLE ..c: .µ 0.. Q) o Q w. H. PARK AND ASSOCIATES co ,,~.... II) e: () .t: -< C.-4 Q .o, Q 0011) .... 0. "0 .....-;.QII)Q LOCATION: Bakersfield Homeless Shelter ooe: ra - 0 e QJ OJ e CIS.... '" 11:1- TEST HOLE IDENTIFICATION: T.R, - ;; 0 c:: 0. .o, .u III co '1:) No, lA 0- Q 0. o ra U DATE DRILLED:07/1B/BB ELEVATION: 415±' ..: 0 w ..., ~.-;°EE ~u ..... OJ 0"'0.0. RIG 6" Hollow Fliaht '... 0. .u :>'g,o.o. TYPE: Stem Auaer ...;¡ e Æ x'rxr ra U) .... Lithologic Description . , - . - 'f ' , , . . - 0, . -, Very fine to very coarse grained, gravel ð . . . 0 500+ 510 common, strong odor. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 80 85 .µ Q) Q) \¡..¡ T.D, - 85' * - Sample Location 9 - Sample Analyzed " Laboratory No, 1564 through 1578 Project: Future Homeless Shelter RESULTS OF ANALYSIS ~1569 ID: T.B, ~4-10' Benzene Toluene Eth:;-l benzene p, m-X~-l ene o-Xylene Isopropylbenzene TVH TPH (Not Diesel) #1570 ID: T,H. #4-25' Benzene Toluene Eth:;--l benzene p,m-X:;-lene o-X~·l ene J£cpropylbenzene TVH TPH (Not Diesel) =1571 ID: T,H, #4-30' Benzene TPH (Diesel) =1572 ID: T.E. =.J-oiO' Benzene- TPH (Dies2l) ugm/gm NRL,ugmjgm 0,73 0_ 1 0,72 O. 1 0.92 O. 1 17 0, 1 13 0, 1 2,5 0, 1 350 1.0 1,200 50 ugm/gm l'lRL, ugm/ gm 110 0, 1 510 O. 1 450 0, 1 2,000 0, 1 1,300 0, 1 250 0, 1 17,000 1 ,0 41,000 50 ugm/gm ~mL, Ilgm/gm ~D O. 1 XD 50 ugrn/gm :-JRL, ugm/ g¡¡¡ ~D 0,1 tm 50 ~lethod of Analysis: California DOllS UiFT manual MRL = Minimum Reporting Level TVH = Total Volatile Hydrocarbons TPH = Total Petroleum Hyàrocarbons ugm/gm :: microgram per gram ND = Not àetecteè S{: ~J1 S t.an Comer I ~ Laboratory No. 1564 through 1578 Project: Future Homeless Shelter RESULTS OF ANALYSIS =1573 ID: T,H. #5-15' Benzene TPII (Diesel) ugm/gm NRL,ugm/gm KD 0,1 KD 50 ugm/gm ~lRL, ugm/ gm ND 0,1 :\D 50 ugm/gm NRL,ugm/gm ND 0.1 ND 50 ugm/gm t-lRL, ugm/ gm ND 0, 1 ND 50 ugm/gm ~1RL, ugm/ gm KD 0, 1 ND 50 ugm/gm ~1RL, ugm/ gm :'-'D 0, 1 ND 50 #1574 ID: T.H, #5-30' Ben.zene TPH (Diesel) #1575 ID: T.H. #6-20' Benzene TPH (Diesel) #1576 ID: T,II. #6-25' Benzene TPH (Diesel) ~1577 ID: T,H, ~6-30: Benzene TPH (Diesel) ;=1573 ID: T,¡¡, #6-35' Benzene TPH (Diesel) ~¡ethod of .~nalysis: California DOHS LL'FT manut=l.l NRL = Minimum Reporting Level TPH = Total Pet.roleum H~·drocarbons ugm/gm = microgram per gram ND = Ko~ detected s~o~ ... LOG Q III 00 1II.5~ t: CJ -'= ~ e C..... OJ .... ~ "0 =' 0 0 III coc Q. 111- .....Q ~IIIOJ IV o 5 Q IV E III..... III 111- ..... - ~ Co ~ 0 CJ 00"0 0..... IV Q. o \.I -'= 0 ..... \.I...., t-o~8eE ~u Q. IV Q "C Q. C. .... e ~ ~ >,Q.c. ...J Q ='nx III J: U) 0 - - . - . - · 5 - * trace · - - · . - .' , · @ 10 - · · ' . · · - t1 . - - · ., - · , - 0 , · 15 - . * · - · , , J.J - · ., Q) · Q) ~ 20 - -' .c J.J - - . · . c.. - Q) , 0 - . · 25 - · _. * 175 25 1,200 ~ot Diesel) 55 ® 105 41,000 Not Diesel - · · -. · - 0 30 - · . @ 12 - - , - · , . . , · . - · - . 35 . , * 18 - · - , · ., _. , - . , - '. @ trace · 40 T.D. - 40' None Detected None Detected OF TEST HOLE w. H. PARK AND ASSOCIATES LOCATION: Bakersfield Homeless Shelte~ TEST HOLE IDENTIFICATION: T,H, No, 4 DATE DRILLED: 07/19/88 ELEVATION: 415~1 RIG TYPE: 6" Hollow Stem Fliaht Auae~ Lithologic Descri?tion Silt, brown, sandy, fine to medium grained, gravel common, poorly indurated, moist, slight odor. Sand, tan, silty, very fine to very coarse -grained, gravel common, loose, odor, Moist, strong odor. .' Silt, brown, sandy, fine to medium grained, poorly indurated, moist, strong odor, Silt, tan, sandy, fine to coarse grained, gravel rare, 'poorly indurated, strong odor, -' 'Odor, Sand, tan, silty, very fine to very coarse grained, gravel common, loose, odor. Silt, tan, sandy, very fine to very coarse arained, poorlv indurated, slicrht oàor, * - Sample Location o - Sample Analyzed LOG OF TEST HOLE o QJ w. H. PARK AND ASSOCIATES CIð III~..... III C U .c .... 3 c..... QJ .., 00111 .... 0. ~ LOCATION: Bakersfield Homeless Shelter ClðC CII- .....Q ~IIIQJ Q e o e Q II) CII..... CII ~- TEST HOLE IDENTIFICATION: T.H. No, 5 ..... :: c:::; 0. .., 0 u ao~ 0..... QJ 0. o ... DATE DRILLED: 07/19/88 ELEVATION: 415±1 .c 0 ..... ......, E-<"'~eE ..,u 0. Q) QJ~ 0.0. RIG TYPE: 6" Hollow Stern Fliaht Auaer .... .., c... >,0.0. ....;¡ E Q) x' nx CII ~ Lithologic Description tn f - . . , , . - 00 - . Silt, brown, sandy, very fine to very - · . * 0 coarse grained, poorly indurated, moist, '. . . no odor. - · - ' . . , - ' " . . Sand, tan, silty, fine to very coarse . * 0 grained, gravel loose, moist, - · . rare, · , , no odor. - .f - · .' - , - . . , @ 0 None No odor. - . Detected , . ' . - o. . . - '.0 , -', -- · - , Silt, brown, sandy, very fine to very -. * 0 coarse grained, poorly indurated, no odor. , - . -- , -. , - . - , * trace No odor. . - , - - . . ' - @ None No odor. trace Detected - - - - - - - - - 5 10 15 .¡,J QJ QJ ~ 20 .c JJ P. QJ Q 25 30 35 40 T.D. - 3D' * - Sample Location G - Sample Analyzed LOG OF TEST HOLE III w. H. PARK AND ASSOCIATES DO 111.5..... III r:: u .c .~ 3 r::..... (\) .o..J 00111 ~ "0 LOCATION: Bakersfield Homeless Shelter act: Co 1\1- ..... III~!II III .8 3 III C1J E 1\1..... 1\1- TEST HOLE IDENTIFICATION: T,H, No, 6 Q P::Co .o..J 0 ~ DO"O 0..... III Co o ... DATE DRILLED: 07/19/88 ELEVATION: 4151:' .c 0 ..... ... ...." E-<.o..J~EE .o..JU Co III III "0 Co Co RIG TYPE: 6" Hollow Stem Fliaht Auaer - E .o..J Q... >.COCO ~ III :::' nx 1\1 ;:¡: Lithologic Description t1') o - - - · 5- * trace Silt, dark brown, sandy, fine to coarse grained, poorly indurated, moist, no odor. - · - - - . - '. , , · Sand, tan, silty, very fine to very coarse 10 . . * grained, gravel loose, moist, - . . 0 common, · odor. - . . no · " - - · - . " . . - . 15 , - * 0 No gravel, no odor. . , - · . ~ · ' . - QJ QJ . . -" I.¡..¡ · - Silt, greenish-brown, sandy, fine to coarse None 20 -" @ 0 De~ected grained, poorly indurated, no odor. - . - - . ..c - ~ ' . 0.. - QJ . 0 0 - None 25 - , 0 48 De~ected Silt, tan, sandy, fine to very coarse - , - grained, gravel common, poorly indurated, · odor, - , - -' , - 30 0 @ 5 None 'Slight odor. - . Det:ect:ed - ., - t: . , - . - · . 35 - ., ® t r ac e None Detected No odor. _ "b , _ 0 - .. . · - · ,. · * o No odor, 40 T.D. - 40' * - Sample Location e - Sample Analyzed .'- CROSS SECT/ON SOV'T ~ GROU"'O 5UR./CAC£ / _. .". _.- ~ ..- :::~ /'.~-~- :-~ - . ~.~ ..... 2.~~ / / I I I \ \ \ \- " ~.._. -.- :.--....... .-. ..... ~ ""~--::. ~~r .~: ,- :~ :-! "1 '.3 5 liE No. 2 ï. H. No. 4- ApPROX. OU'TL.INE 0': TANK 8AC.K~/L.L it --~-- -------il TIC"'c.~ I I : SSO GAL. -rANK : ~_______ __Y:\__J 1::1 l¡,¡ t- <t: < - ~ ~ '< C) '-J 1,200 +1,000 N.D. 25' ,~- : ~_1\ ~ ~ \ ~ ~ .~\ ~ IA~ r~ \ '~ , \ ~ NJJ .1'.\ . j t;i0 'Y' .:::;: 7.J-I. No.6 TIC""_ ¡.. It: I;) ~ III ex: o o t t It I '" ~ ... ~ III Q ¡ = Q:: o N.D_ ... " Q Q. " ct 5S t ~ . Ie oe III ~ ct ~ Q ~ ¡ ~ a:: . ~ ...¡ <{ I.U C( <t N.D. 5 ....: - 175 SLIGH TL Y CONTAMINATE.D / AREA / / N.D. /- ,/' " """"'"- ~ ...,: t a.. I<. ~:; ¡:,..... þ'C" ./..-:o-.~ - I*..~' ~ 105 12 18 N.D. TIfAl:.£ ï. D. =4-0' 5 C ALE': /" = 5 ' W. H. PARK AND ASSOC.IATE'S AuGuST 1988 TRACE o T. D. = 4-0 ' .. NORTH 5' 10 ¡S' ::t ¡.. a.. III ~ 20' 25" 30' 35 40' ARE.AL £XíENï OF CONTAMINATION Aí 20 POOl ÐEPTI-I SITE No. 2 ~ -r: H. No. {;, .,.-S__ ~, ....~:. ........... /~.,>_. "" I: ~~~€il9''''''::~' ~ ~ /' fr:==~-;h, ~\ ell I I 1'~ -<: 1&1 I I:~ ( .... I I j:¡ )..0 , ~ I : -r.}1. No. +: r';~: ~~ Ii I: s : I¡~ ~ ~ , < I 1 tt -- \ ¡... I _ .J~ < I I -¿ ~< 01 ~AN (~ I'~ ~ 1 \ \J~ . ~ / '-- ___.J' C 8ACKFIt..: I. U \ --~ I " / '-.... .. .-/ --- 7: J./. No.5 ~ Sc.At..£: I" = 5' W. H. PARK A.Nt:> As SOC, - AUGUST /988 N NO :5CAt..é 15h'€D ! r--' :SLrAN/c:::#3 ...._J - AveNt/£. '-_oJ '___ EK/.fT/NC, ðO/¿/)/NC!!. Tæt/~rVN EAST /b 00 TA TANI< #- I » ~ ~ » () :r S rn < ~ () .' .:- - c /' .i I'ETROl£UM LABORATORIES, Inc. J. J. EGUN, IfG. CHEM. ENGR. 4100 PIERCE RD., BAKERSfielD, CALIfORNIA 93308 PHONE 327-4911 ,AGRICYl TURE ~ CHEMICAl ANAl YSIS Purgeable ArrJTnatics (SOIL) Apex Environmental P. 0, Box 57 Edison, CA 93220 Attention: Jerry White Date of Report: 0.3-Jun-88 Lab No.: Sample Dese: 3896-1 Tank #1 2' Gasoline DATE SAMPLE DATE SAMPLE DATE ANALYSIS COLLEGI'ED: RECEIVED @ LAB: COMPLETED : 26-May-88 26-May-88 Ol-Jun-88 Minlrrurn Reporting Analysis Reporting Consti t'uent Units Results Level Benzene ug/g 44.51 0.10 Toluene ug/g 336,39 0,10 Ethy 1 Benzene ug/g 68.78 0.10 p-Xylene ug/g 204.78 0,10 m-Xylene ug/g 510.49 0,10 a-Xylene ug/g 322,01 0.10 Isopropyl Benzene ug/g None Detected 0.10 Pet. HydrocarrJOns ug/g 5468,17 5.00 Total Petroleum HydreJCaroons ug/g 6955.12 0.10 TEST METHOD: California D.O.H,S. T.P,H. for Cø.soline Dry Matter Basis Cc.mrnents : PETROLEUM HYDROCARBONS: QJantification of volatile twdrc~arrJOns present (C1 to C20) utilizing a gasoline factor, As outlined by California D,Q,H,S. Tt~se volatile twdrocarrJOns are in addition the constib~ents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-dù.orin- ated] constituents on this report. By I/} /'1 e R . \1 (/ -<::';;(.1.,.,,./ {?" 'Ii J, i'~lin ¡!~ Analyst I'.... 'I' -," AGRICUl TURE LABORATORIES. Inc. J. J. EGLIN, REG. CHEM. ENGR. 4100 PIERCE RD., BAKERSFIELD, CALIFORNIA 93308 PHONE 327-4911 CHEMICAl ANAL YSIS PETROLEUM Purgeable Aromatiç_s (SOIL) Apex Enviro~ntal P. 0, Box 57 Edison, CA 93220 Attention: Jerry White Date of Report: 03-Jun-88 Lab No. : Sample Desc: 3896-2 Tank f1:1 6' Gasoline DATE SAMPLE DATE SAMPLE DATE ANALYSIS COLLECTED: RECEIVED @ LAB: COOPLETED: 26-May-88 26-May-88 01-Jun-88 Minirrum Reporting Analysis Reporting Constituent Units Results Level Benzene ug/g None Detected 0,10 Toluene ug/g 10,59 0,10 Ethyl Penzene ug/g 23,79 0,10 p-Xylene ug/g 41,87 0.10 m-Xylene ug/g 102,14 0,10 o-Xylene ug/g 84.05 0.10 Isopropyl Benzene ug/g 14.76 0.10 Pet, Hydrocarbons ug/g 1360.41 5.00 Total Petroleum Hydrocarbons 1.J.g/ g 1637.61 0.10 TEST METHOD: CaliforTlia D. 0, H. S, T . P. H, for Gasoline Dry Matter Basis Corrrnents : PETROLEUM HYDROCARBONS: Olantification of volatile hydlY'Jearoons present (Cl to C20) utilizing a gasoline facWr, As outlined by California D,O.H,S, These volatile hydrocarbons are in addition the constituents specifically defined on this report, Tm'AL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorin- ated] consti vJ.ents on this report. By ....'1,r1 ~ /', ( t'" , .' .¡II'- ~:. ~ /' l j .t. .J -r J ..' )" ..., ft,,, {/ '/...2'" Epin p¿ Analyst t7. . ' " .i AGRICUl TURE LABORATORIES, Inc. CHEMICAl ANAL YSIS fETROllUM J. J. EGLIN, REG. CHEM. ENGR. 4100 PIERCE RD., BAKERSFIELD, CALIFORNIA 93308 PHONE 327-4911 ~lrgeable Arorratics (SOIL) Apex Environmental P. O. fux 57 Edison, CA 93220 Attention: .JerrY White Date of Report: 03-Jun-88 Lab No. : Sample Desc: 3896-3 Tank #2 2' Gasoline DATE SAMPLE DATE SAMPLE DATE ANALYSIS COLLECTED: RECEIVED @ LAB: COOPLETED : 26-May-88 26-May-88 01-Jun-88 Minirrmrt Reporting Analysis Reporting Constituent Units Results Level Benzene ug/g None Detected 0.10 Toluene ug/g 78.12 0.10 Ethy 1 Benzene ug/g 45.14 0.10 p-Xylene ug/g 89.96 0.10 m-Xylene ug/g 222.65 0.10 o-Xylene ug/g 152.94 0.10 Isopropyl B::nzene ug/g None Detected 0.10 Pet.Hydr~ocarbons ug/g 3150.92 5.00 Total Petroleum Hydrocarl-JOns ug/g 3739.73 0,10 TEST METHOD: CalifonlÌa D.O. H, S . T . P . H. for Gasoline Dry Matter Basis ec'rrments : _ PETROLEUM HYDROCARBONS: Qlantificatic~ of volatile hydrr~~rbons present (C1 to C20) utilizing a gasoline factor, As outlined by California D.O.H,S. These volatile hydrocarbons are in addition the constivlents specifically defined on this rerort. TOTAL PETROLEtJl1 HYDROCARBONS: The sum total of all [non-chlorin- ated] constiblen~? on this report. By /'1 -1 £ ~ . )1.' /1.. '(j{ìC.{~'f./ ~' r]l. J, ~ in ---) ?'/ . j. /.''- é' Analyst ,-j ~ .. þ-,~. ¡ AGRICUI TURE LABORATORIES, Inc. J. J. EGLIN, REG. CHEM. ENGR. 4100 PIERCE RD., BAKERSFIELD, CALIFORNIA 93308 PHONE 327-4911 CHE IrtICAI ANAL YSIS 'ETROlEUIrt Purgeable Arornatics (SOIL) Apex Environmental P. O. Box 51 Edison, CA 93220 Attention: Jerry White Date of Report: 03-Jlm-88 Lab No, : Sample Desc: 3896-4 Tarù{ #2 6' Gasoline DATE SAMPLE DATE SAMPLE DATE ANALYSIS COLLECTED: RECEIVED @ LAB: CCX1PLETED : 26-May-88 26-May-88 01-Jun-88 Minirrum Reporting Analysis ReP')rting Constituent Units Results Level Benzene ug/g 0,90 0,10 Toluene ug/g 19.10 0,10 Ethy 1 Benzene ug/g 21.18 0,10 p-Xylene ug/g 36.63 0,10 m-Xylene ug/g 83.68 0.10 o-Xylene ug/g 62,19 0.10 Isopropyl Benzene ug/g 10.11 0,10 Pet. Hydrocarbons ug/g 546.62 5,00 Total Petroleum Hydrocarbons ug/g 182.21 0,10 TEST METHOD: California D,O.H.S. T,P.H. for Gasoline Dry Matter Basis Cormll':mts: PETROLEUM HYDROCARBONS: Q1antification of volatile hydrocarrJOns present (C1 to C20) utilizing a gasoline factor. As outlined by California D.O. H. S, These volatile hydrocarr.-úns are in addition the constivJents specifically defined on this report, TarAL PETROLEUM HYDROCARBONS: The sum total of all [non-dùorin- atedJ constituents on this report. By /J ',1 ç7 /<-' . {..,l ~" f/' .,. ,.' ~ .,/'7-' ;J;; .J:- Ég:J.~ri _...: "'-'1 ... L ~/ '. .-, ~ /"/ ./. ?Æ.- Analyst -j o 0'. . AGR/CUI TURE LABORATORIES, Inc. J. J. EGLIN, REG. CHEM. ENGR. 4100 PIERCE RD" BAKERSFIELD, CALIFORNIA 93308 PHONE 327-4911 CHEMICAL ANAL YSIS 'lTROllUM Petroleum Hydr()('..arbons (SOIL) Apex Environmental P. 0, Box 57 Edison, CA 93220 Attention:Jerry White Date of Report: 03-Jun-88 Lab No,: 3896- 5 Sample Desc,: Tank #3 2' Diesel DATE SAMPLE COLLECTED: 26-May-88 DATE SAMPLE RECEIVED @ LAB: 26-May-88 DATE ANALYSIS Ca1PLETED: 01-Jun-88 Constitu.ent Reporting Units Analysis Results Minirrum Reporting Level Benzene ug/g 1.33 Toluene ug/g 1. 78 Ethy 1 Benzene ug/g 1.13 p-Xylene ug/g 4.88 m-Xylene ug/g 4,80 a-Xylene ug/g 10,18 Isopropyl benzene ug/g 4.46 Petroleum Hydrc!Carb:ms ug/g 10728.00 Total Pet. Hydrc!Carbons ug/g 10756,56 0.10 0.10 0,10 0.10 0.10 0.10 0.10 10.00 0.10 TEST METHOD: California St~te D.O.H,S. T,P.H, for Diesel (Car1xm Disulfide Extraction) Dry Matter Basis Corrrnen ts : PETROLEUM HYDROCARBONS: Quantification of petroleum hydrO<"'..arbons utilizir~ a diesel standarYl,As outlined rq the California D.O,H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all constituents on this report. By .} -., (,1 (( . >' '. .}. _. '.' oJ.).J , e ~, ';'C: '(_.1,,' '--f/"-"- F4in ..-~ ..--' . /'¡ --y:¡ i.._.-J~~';f ..J~'I',¿~... RotJert Plaisance rJ-IPrrl; c.t. ¡ ...- . t f I'lTROllUM LABORATORIES, Inc. J. J. EGLIN. REG. CHEM. ENGI. 4100 PIERCE RD., BAKERSFIELD, CALIFORNIA 93308 PHONE 327-4911 , AGRICUI TURf CHfMICAI ANAL Y$I$ Petroleum Hydr<x"'~rbons (SOIL) Apex Environmental P, 0, Box 57 Edison, CA 93220 Attention:Jerry White Date of Rep:»rt: 03-Jun-88 Lab No,: 3896-6 Sample Desc,: Tank tt3 6' Diesel DATE SAMPLE COLLECTED: 26-May-88 DATE SAMPLE RECEIVED @ LAB: 26-May-88 DATE ANALYSIS Ca1PLETED : 01-Jun-88 Constituent Reporting Units Analysis Results MinirruJrJ Rep:»rting Level Benzene ug/g 1.12 Toluene ug/g 1. 73 Ethy 1 Benzene ug/g 1.50 p-Xylene ug/g 12,07 m-Xylene 1J.g/ g 13.38 o-Xylene ug/g 23,00 Isopropyl benzene ug/g 6.31 Petroleum Hydrocart-JOns ug/g 10958.00 Total Pet, Hydrocarbons ug/g 11017.11 0.10 0,10 0,10 0,10 0.10 0,10 0,10 10.00 0.10 TEST METHOD: California State D.O.H,S, T.P.H. for Diesel (Carbon Disulfide Extraction) Dry Matter Basis Corrrœnts: PETROLEUt1 HYDROCARBONS: Qu.antification of petroleum hydrocarrJOns utilizing a diesel standard, As ~~tlined by the California D.O.H,S, These petroleum hydr()('..arbons are in addition to the constituents specifically definerl on ttds rep:»rt. 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