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Home My WebLink AboutMITIGATION FILE #1 ~"~'Stockdale Highway, Suite 120 ~l~70-Ea"~'~'Herndon Avenae', Suite 203 Post Office Box 9217 Fresno, California 93720 Bakersfield, California 93389 209/261-9160 805/326-1112 805/326-0191 FAX 209/261-9171 FAX LEO BLACK ESTATE SUMMARY OF EXCAVATION AND REMEDIATION OF CONTAMINATED SOILS 3909 Pierce Road Bakersfield, California August, 1993 Prepared by: WZI Inc. 4700 Stockdale Highway, Suite 120 Bakersfield, California 93309 Susan Chandler Kiser Certified Registered Assessor State of California No. 01095 Expiration Date: 06/30/94 es James Allen Waggor{el~ ified Engineering Geologist tate of California No. 1818 Expiration Date: 03/30/95 0206001 O. Ol 1 TABLE OF CONTENTS Pa~qe I. Introduction ~ 1 II. Summary and Conclusions 1 Iii. Recommendations 2 IV. Geology.and Hydrology 3 V. Field Methodology 3 Excavation Program 3 Soil Sampling Program 4 Ground Water Sampling Program 5 VI. Laboratory Methodology 5 VII. Analytical Results 6 Stockpiled Soil Characterization - 1991 Excavation 6 Leo Black Property and Read Parcel 6 Stockpiled Contaminated Soil- 1993 Excavation 6 Ground Water Sampling 7 VIII. References 8 EXHIBITS Exhibit 1 Location Map Exhibit 2 Soil Excavation Site Plan - January 1991 Exhibit 3 Soil Excavation Site Plan - July 26 - August 6, 1993 Exhibit 4 Cross Sections, July 26 - August 6, 1993 Excavation Exhibit 5 Laboratory Analyses Summary Exhibit 6 Off-Site Nearby Sources of Ground Water Contamination APPENDICES Appendix I Soil Compaction Test Results Appendix II Chain of Custody Records Appendix IIIResults of Laboratory Analysis of Soil Samples Appendix IV Results of Laboratory Analysis of Ground Water 02060010.011 !. INTRODUCTION WZI Inc. has completed excavations of hydrocarbon contaminated soil at the Leo Black Electric site located at 3909 Pierce Road, Bakersfield, California (Location Map, Exhibit 1). The excavation extended onto the adjacent property located to the north of the Leo Black Electric site known as the Read Parcel. A 500 gallon underground tank, which had contained gasoline, was removed from the northeast area of the Leo Black Electric site in February, 1987. Gasoline contamination was identified in the soils beneath the tank and a site characterization was conducted in July 1987 (WZI, 1987)'to determine the extent of subsurface contamination. In July 1990, a Work Plan was submitted to the Kern County Environmental Health Services Department which outlined a program for the excavation and remediation of the gasoline contaminated soils at the site. On-site health and safety procedures were also outlined in the 1990 Work Plan. Excavation of contaminated soils was conducted in January, 1991 on the Leo Black property. Additional excavation was conducted between July 26 and August 6, 1993 on both the Leo Black property and the Read Parcel located immediately to the north. The purpose of this report is to summarize the excavation and on-site remediation activities conducted to date. II. SUMMARY AND CONCLUSIONS As documented in the previous Site Characterization (WZI, 1987), soils contaminated with gasoline from a 500 gallon underground gasoline storage tank were present in the northeast area of the Leo Black Electric property. Contamination was suspected of extending onto the Read Parcel located immediately adjacent to the Leo Black site to the north. 02060010.011 Page 1 Analysis of 15 confirmation samples collected from around the base of the excavation and along the north side on the Read Parcel verified that all the gasoline contamination caused by the former underground fuel tank has been removed. Diesel contamination identified in two intermediate samples ( .U~.r6,,from'3~M::ancl LB-7,/ from 34 feet) was noted by BC Laboratories a$::,;n0t~bein~::cl~acte~i~iC;!~ diesel and' probably consisted of other hydrocarbon compounds that would volatilize in the diesel range. Gasoline, diesel and xylene contamination were identified in the ground water sample collected from a depth of 45 feet. The diesel contamination was noted as-not-being charaCt~r~tic:0f ~diesei'by'BC Laboratories, similar to the diesel contamination identified in sample LB-7. Neighboring sources of confirmed ground water contamination are probably the sources of the contamination. The excavation was completely backfilled on the Read Parcel and partially backfilled on the Leo Black property as approved by the County. Compaction of the backfill soils as tested by M&T Agra, Inc. and all compaction tests exceeded the required 85%. III. RECOMMENDATIONS The contaminated soils presently stockpiled on-site should be remediated according to the Site Remediation Workplan Revised Technical Approach prepared by WZI in July 1990. The remaining excavation on the Leo Black property should be backfilled with suitable soil and the case should be closed without requiring additional ground water monitoring at the site due to the regional nature of the ground water contamination in the area. 02060010.011 Page 2 IV. GEOLOGY AND HYDROLOGY During the excavations, fine to coarse sand was encountered which are similar to those described to a depth of 15 feet in the Site Characterization performed by WZI in July, 1987. A coarse grained, cobbly sandstone was encountered during the excavation from a depth of approximately 35 feet to the maximum depth of approximately 45 feet. Ground water was encountered at a depth of approximately 15 feet in boreholes drilled at the site in July of 1987. During the excavation of July-August 1993, ground water was reached at a depth of approximately 45 feet. The drop in ground water levels is compatible with the regional drop in the same time period due to drought conditions. V. FIELD METHODOLOGY Excavation Proqram Excavation of the gasoline contaminated soil was completed using an FMC Link Belt 3400 excavator and a John Deer 644 loader. The excavation was backfilled with a Caterpillar D6 bulldozer and the John Deer 644 loader. A 4200 gallon water truck was used to add moisture to the soils during backfill. Approximately 2700 cubic yards of soil was excavated from the Leo Black property and stockpiled on-site during January, 1991. Approximately 660 cubic yards of this soil was segregated as contaminated. The aerial extent of the January 1991 excavation and the locations of the stockpiled soils are summarized on Exhibit 2. Additional excavation of gasoline contaminated soils was conducted between July 26 and August 6, 1993 on both the Leo Black property and the Read Parcel located immediately adjacent to the north. The maximum aerial extent of the excavation to the north of the Leo Black site onto the Read Parcel was 30 feet. The excavation reached a maximum depth of 45 feet where'ground water was encountered. 02060010.011 Page 3 After the analytical results determined that all contamination had been removed, the excavation was backfilled with uncontaminated soils which were stockpiled on-site. Compaction' of the backfill soils was certified by M&T ,~gra Incorporated. All compaction tests exceeded the required 85%. The results of the compaction tests are summarized in Appendix I. Soil Sampling Program Soil samples were collected for chemical analysis in brass tubes, each 2 1/2 inches in diameter and 6 inches long. The sample tubes were labeled and the ends covered with aluminum foil, capped with plastic and secured with plastic tape. Samples were stored on ice pending delivery with Chain of Custody documents (Appendix !1) to BC Laboratories in Bakersfield, California, a California Department of Health Services (DOHS) certified laboratory. Sampling during the on-site investigation was conducted at several times: · On July 26, 1993, a total of four soil samples were collected from the contaminated soil which had been stockpiled during the January, 1991 excavation, to determine if the material was suitable for use as backfill. Each contained a composite of soil collected from three separate locations (Exhibit 2). · A total of 15 samples were collected from the excavation between July 28 and July 30, 1993 to confirm that gasoline contamination had been removed. Soil samples were not collected from the bottom of the excavation due to.the presence of ground water. The sampling was witnessed by Dolores Gough from the Kern County Environmental Health Services Department. Sample locations are summarized on the Soil Excavation Site Plan (Exhibit 3) and the Cross Sections (Exhibit 4). 02060010.Ol 1 Page'4 VV~ NC · A total of 9 samples were collected from contaminated soils which were stockpiled on-site during the July 26 - August 6, 1993 excavations. Sample locations were selected utilizing a representative sampling technique which systematically selects sampling points from. a sampling grid using~ random numbers following U.S. Environmental Protection Agency (EPA) guidelines in SW 846. Three intermediate soil samples were collected during the excavation (LB- 5, LB-6, LB-7) to characterize the contamination. Sample locations are summarized on the Soil Excavation Site Plan (Exhibit 3). Ground Water Sampling Pro.qram A ground water sample was collected from the bottom of the excavation in glass vials provided by BC Laboratories. VI. LABORATORY METHODOLOGY The soil samples and the ground water sample were delivered to BC Laboratories in Bakersfield, California for chemical analysis. BC Laboratories is a California Department of Health Services Certified laboratory. Soil samples were analyzed for total petroleum hydrocarbons as gasoline (TPH-G) (EPA Method 8020). Selected samples were also analyzed for total petroleum hydrocarbons as diesel (TPH-D)(EPA Method 8020), BTEX (U.S. Environmental Protection Agency (EPA) Method 8015M/8020) and soluble lead (SW60'i0 or SW7000 Methods). The ground water sample was analyzed for total petroleum hydrocarbons as gasoline (TPH-G}, total petroleum hydrocarbons as diesel (TPH-D) and BTEX. 02060010.011 Page 5 VII. ANALYTICAL RESULTS Results of the laboratory analysis of the confirmation soil samples from the excavation collected between July 26 and August 6, 1993 are presented in Appendix III and summarized in Exhibit 5. Results of the ground water sample collected on July 29, 1993 are presented in Appendix IV and also summarized in Exhibit 5. Results of the characterization samples collected from the 1991 and 1993 stockpiled soils are presented in Appendix III and summarized in Exhibit 5. Stockpiled Soil Characterization - 1991 Excavation No contamination was detected in any of the four confirmation samples (LB-11 LB-2, LB- 3, LB-4) collected from the 1991 stockpile to determine the suitability of this soil as backfill material. Leo Black Property and Read Parcel No contamination was identified in the fifteen confirmation samples, verifying that all the gasoline contamination had been removed. Stockpiled Contaminated Soil- 1993 Excavation Gasoline and diesel contamination were detected in two of the intermediate samples (LB-6, LB-7) collected during the excavation. Contamination identified as diesel in sample LB-7 was noted by BC Laboratories as not being truly characteristic of diesel and possibly consisted of other hydrocarbon compounds that would volatilize in the diesel range: No contamination was detected in any of the nine samples collected from the contaminated soils which were stockpiled on-site during the July 26 - August 6, 1993 excavation. o2o6oolo.011 Page 6 Ground Water Sampling Both gasoline and diesel as well as a minor amount of xylene, were reported in the ground water sample collected from a depth of approximately 45 feet._ The contamination identified as diesel was also noted as not being truly characteristic of diesel, similar to the diesel contamination identified in soil sample LB-7. Numerous sources of hydrocarbon contamination have been identified on surrounding sites (Exhibit 6) which have probably affected the shallow ground water in the area. Diesel-type contamination identified in soil samples LB-6 (32 fe_...e!!..~..n_d..__.L_~;? probably from the contaminated ground water as water levels at the site have been as shallow as 15 feet in 1987 (WZl, 1987). In addition, there is no historical evidence for the on-site storage or use of any fuel other than gasoline. 02060010.011 Page 7 VIII. REFERENCES WZI Inc., July, 1990, Leo Black Estate Site Remediation Work Plan Revised Technical 'Approach, unpublished consulting report. Wilson Zublin Inc. (WZl inc.), July, 1987, Leo Black Electric Site Characterization, unpublished consulting report. United States Environmental Protection Agency, September, 1986, Test Methods for Evaluating Solid Waste, Physical/Chemical Methods, $W-846. 02060010.011 Page 8 EXHIBIT 5 "' LEO BLACK ELECTRIC LABORATORY ANALYSES SUMMARY EXCAVATION SAMPLES COLLECTED 7/26/93 THROUGH 8/6/93 Sample Number: LB-1 LB~2 LB-3 LB-4 LB-5 LB-6 LB-7 LB-8 LB-9 LB-10 LB-11 LB-12 LB-13 LB-14 LB-15 LB-16 LB-17 Sample Type: Soil Soil Soll Soil Soil Soil Soil Soil Soil Soil SoU Soil Soil Soil Soil Soil Soil Depth: 1 ft. 1 ft. ! ft. 1 ft. 30 ft. ~ ~t.-" 3~'.~ 40 ft. ~0 .ft.~ ~'~'~.~ 40 ft. 40 ft. 40 ft. 40 ft. 40 ft. 25 ft. 25 fL Units ~ ~ ~ :'--~_.. ~.T ' I'PH Gas mg/kg ND ND ND ND ND 14.00: 430.00 ND ND,,-' ND ND ND ND ND ND ND ND TPH Diesel mg/kg ND ND ND ND ND .100.00 .680.00 -- --~ -- '~ ......... Benzene mg/kg ND ND ND ND ND ND ND .............. Toluene rog/kg ND ND ND ND ND ND ND ........... Ethylbenzene mg/kg ND ND ND ND ND ND ND ............. Xylenes ,rog/kg ND ND ND ND ND ND ND .............. Lead rng/liter .......................... Sample Number: LB-18 LB-19 LB-20 LB-21 LB-22 LB-23 LB-24 LB-25 LB-26 LB-27 LB-28 LB-29 LB-30 LB-3! '::.!;iiii?:?ii:i:: LB-W-I Sample Type: Soil Soil Soil Soil Soil Soil Soil Soil Soil Soil Soil Soil Soil Soil ii::iii:::i:ii:i::ii~::i!~?!: Water Del )th: 25 fl. 25 fl. 15 fl. 15 fL 15 fl. I fL 1 fl. 1 ft. I fl. 1 fl. 1 fL 1 fl. 1 fL I ft. '::::::i:,!i::'.iiii:-: 45 ft. Units TPH Gas mg/kg ND ND ND ND ND ND ND ND ND ND ND ND ND ND !!iiiiiiiiiiiiiii!~i?:.: 7100 u .......!.!.....' !.! ' Lead mg/liter .......... 0.84 -- ND -- 1.50 ND -- 3.30 0.69 :.::: .-i :;...;?,.::: -- 0~/2'//~3 JKW LEO~LACK/EXHIB5 SAN JOAQUIN TEXACO REFINERY I REFINERY I LEO BLACK ELECTRIC ~0~ PIERCE ROAD, BAKERSFIELD, CA. Brittan Rd. POWER MACHINERY GulfSL 3818 PIERCE RD. Gulf Getty SL DAVIES OIL COMPANY 3505 1/2 GULF ST. ridian Ave. Turcon Ave. Orin Wy. ASSURED TRANSPORT UNION CARBIDE ~ 3228 GIBSON RD. -- 3505 PIERCE RD. Gillrr~'8 Ave. WZl INC. BAKERSFIELD, CALIFORNIA Feet 2000' LEO BLACK ELECTRIC 3090 PIERCE ROAD, BAKERSFIELD, CA. Miles Y,'mi. I. OFFSITE NEAR BY SOURCES OF Kilometers .50km GROUNDWATER CONTAMINATION . , ' I D^TE 8/93 0206.0010A ! EXHIBIT TOTAL DEPTH 45 ?A' -20' -30' -40' -40' -30' -20' -10' ELECTRICAL eox B' AERATION PILE (Covered) lOO cu. [BUILDING -;ND CLE~ SO~L BAKERSFIELD, CALIFORNIA ' STOCKPILE ~ SAMPLE LOCATION "' LEO BLACK ELECTRIC 500 CU. YD. 3090 PIERCE ROAD, BAKERSRELD, CA. ,SS SECTION LOCATIONS ~ ! SOIL EXCAVATION SITE' PEAN · i: AUGUST_!.993 ~~; ' I 0206.0010A EXHI I III I II I I I ! III J I LIMIT OF EXCAVATION READ PARCEL ~ LEO BLACK PROPERTY AERATION PILE (Covered) 1000 cu. yd. ! LIMIT OF REMAINING DEPRESSION (Max. Depth = 10 feet) SHED BUILDING JUNK I JUt~K JUIiK Q AI iA. f£NCE o 20' 40' SCALE IN FEET I IBIII I I I I I I I I I I I I I I II I II '11 I III I I I I Al East r FENCE PIERCE ~ ROAD ,lATE ! ~TION . ,. .. . ; (~) SAMPLE LOCATION , :.~ .."... I P SAMPLE LocATION PROJECTED B .,. '.~'.r'.~: · SANDSTONE South '. I! .~'"~". ~ :3 COBBLE¥ SANDSTONE: ~ 0 ,',,:,, !20'7, SCALE IN FEET *'-~ WZi INC. BAKERSFIELD, CALIFORNIA LEO BLACK ELECTRIC 3090 PIERCE ROAD, BAKERSFIELD, CA. ~ CROSS DATE 8/93 A West APPR L 0'-- O~ TANK1 GROUN 10'-- WATER LEVEl- ' .'. :.'~ r- n 30'-- · Ltl GROUND 40'-- WATER LEVEL '.°' .'.~ 8/93 · ~1 B North PROPERTY LINE I r-" READ PARCEL ~-I '~ LEO BLACK PROPER'P I APPROXIMATE 10'-- WATER LEVEL ., .'~'~. .-. 7/87 ~' :.'. '~ ..... LU 20'-- = . ..":... ® n 30'-- · ° . ® , 40'-- WATER LEVEL ': ~," ~ ;' ~ ~' : ." .. 8/93,, ~1' , , ' .=' ~ ,~'.~_ _ '. · , 0 0, °~. 0.1~ · ~', O· 50'-- . ~ -.~. . or. Pierce Road ,./~ Chain Limits of Backfill / ~ · 2~ · Fence :' ~ 0901 Pierce Road .~, (~ ~ :.~ .~:. 1 Inch = 20 F~t .... ._~ ~ I~lmtes Bo~om Dep~ (Bac~l) }'?:~ ?~: .... SITE SKETCH .3901 Pierce Road, Bakersfield California '"' LEO B~CK ESTATE ". ino M&T AGRA' ~chn/~/ and ~nw~nmenla/:S~s .~". ....."':~.~" ' ~ .' 8/~'~ P~TE 1 ' i' ' ~ Beardsley ~ l'rimary Scll · B~ '% ~ ~ ............ D~VE ...~..: * .' ~ ' . 'Be~rd~le~ i " ..... I'" '11 L" ~,r".~, . o ~* ..... · SIT~ LO~ATION . ~ _.. ~ .. _ ..~ ,,.' .... ,, .. , ~ ... o ~'.., /~ o :~ ~ ' ..:?. ...~.. - · I ~ ~ /,,~ ~ ,..;~.-..,,. oi~ Sum. o ~..~ ~., .: -i,~= ,' L.~ ~ o ~.' " ,, O. I°Loz (58 :.~' t." , ' ~[ .... --.',' o o " ~ ~ .., ,- .q.~ t,andc~ " "26 Mde 2 X . - .. /'~, ...~ ~'. ,. ,., I~ " ~ .. ~'~ ~~ IIII WZI INO. T2gs / H27E BAKEflSFIELD, aAUFOnNtA LEO B~OK E~OTRIO ~ PIERCE ROAD, BAKERSHELD, C~ 0 ~00~' ~000' LOCATION MAP ~ I SCALE IN,FEET DATE ~93 1 Table I Summary of In-Place Soil Field Density Tests and Compaction Determinations for 3901 Pierce Road Bakersfield, California Prepared for the Leo Black Estate Field Density Test Method - Nuclear - ASTM D2922-81 Field Moisture Test Method - Nuclear - ASTM D3017-78 Field Density Test Method - Sand Volume -ASTM D1556-90 Laboratory Moisture-Density Relationship -ASTM D1557-78 Required Relative Compaction - 85% Notes: 1 Test Performed in accordance with the Sand Volume Method Job No. 593-213 Table I (Continued) August 13, 1993 3901 Pierce Road Leo Black Estate Below Field Field Optimum Lab Test Finished Test Moisture Dry Moisture Dry % Retested Number Date Surface Location % Density % Density Comp By Notes (ft). (pa) Ct~ 1 8/3/93 40 See Site Sketch 1.2 117.1 5.5 119.7 98 2 8/3/93 37 See Site Sketch 2.2 117.5 5.5 119.7 98 3 8/3/93 34 See Site Sketch 3.8 109.9 5.5 119.7 92 4 8/3/93 31 See Site Sketch 2.5 107.7 5.5 119.7 90 5 8/3/93 29 See Site Sketch 5.5 109.6 5.5 119.7 92 6 8/3/93 26 See Site Sketch 3.2 112.6 5.5 119.7 94 7 8/3/93 23 See Site Sketch 5.9 111.6 5.5 119.7 93' 1 8 8/3/93 20 See Site Sketch 7.4 103.2 5.5 119.7 86 1 9 8/3/93 18 See Site Sketch 4.0 102.9 5.5 119.7 86 1 10 8/3/93 16 See Site Sketch 4.5 113.0 5.5 119.7 94 1 11 8/4/93 14.5 See Site Sketch 6.3 111.2 5.5 119.7 93 1 12 8/4/93 13 See Site Sketch 5.7 103.0 5.1 109.3 94 1 13 8/4/93 11 See Site Sketch 5.4 97.9 5.1 109.3 90 1 14 8/4/93 9.5 See Site Sketch 6.9 102.3 6.3 116.4 88 1 15 8/4/93 8 See Site Sketch 3.2 106.5 6.3 116.4 91 1 16 8/5/93 7 See Site Sketch 3.0 115 6.3 116.4 99 17 8/5/93 6 See Site Sketch 6.1 108.0 6.3 116.4 93 18 8/5/93 5 See Site Sketch 5.6 109.0 6.3 116.4 94 19 8/5/93 4 See Site Sketch 6.4 111.9 6.3 116.4 96 20 8/5/93 3 See Site Sketch 15.0 105.9 6.3 116.4 91 ' 21 8/5/93 2 See Site Sketch 3.7 111.7 6.3 116.4 96 22 8/5/93 1 See Site Sketch 8.1 109.8 6.3 116.4 94 23 8/5/93 0 See Site Sketch 8.5 108.9 6.3 116.4 94 Page 1 TABLE H Maximum Laboratory Density The maximum dry density and optimum moisture content of selected representative soil types utilized in the compaction fill were determined in the laboratory in accordance with ASTM Soil Compaction Method D1557-78. The optimum moisture contents axe in percent dry weight, and the maximum dry densities axe in pounds per cubic foot. The double4etter soil classifications that follow the Soil Descriptions axe in accordance with the Uniform Soil Classification System (ASTM Designation D2487-69). The results of the laboratory compaction tests axe as follows: Soil Description Maximum Optimum and Classification Dry Moisture Density Content (pcO (%) Brown fine to medium SAND with accessory SILT (sp) 109.3 5.1 Brown fine to medium SAND with accessory SILT and 119.7 5.5 GRAWL (sp) Brown fine to medium SAND with accessory SILT (sp) 116.4 6_3 READ PARCEL FLOOR SLOPE ~ , -6' -10' -1~' :. -1.~ '- I 1.5:: 1 SLOPE ELECTRICAL : aOX TOP OF CUT 0 n- LB-1 ru :' 100 CU. yd. 8100~lLfi UILDINO STOCKPILE ;i' '" BAKERSFIELD, CALIFORN,IA, ELECTRIC 3090 PIERCE ROAD, B.M(ERSFIELD~ C&. SCALE IN FEET FENCE GATE AERATION ~ CONTAMINATED so. s~OC~l, ~ LB-4 C='/ LB-3 ~oo o:. vd. ~' LB-2 30 cu. yd. / CLE~ ~IL CLE~ SOIl ST~KPI~ ST~KPiLE SHED ~ CU. ~. BUILDING 5~ CU. ~. JUNK I I ~R JUNK JUt,IK FENCE (~ LB-1 COMPOSITE SOIL SAMPLE LOCATIONS Post Office Box 92' ~ Bakersfield, Calitornia 93389-9217 -- CHAIN OF CUSTODY DOCUMENT '. : Job Number: ,/'~20 <~. O~lO WZl Inc. Attention: .z/¢, g,c../~/-.z/~ ~,.- ~-~' ~mple Type: (check one) -- Dri .nklng Water ~ SurfaceWater WasteWater OII Sludge. . .Other (specify) Sample Number :ollected Collector's Name Type of Analysis z'_,g _,¢ ¢ ,:.-g'-A~ 3"-/l .¢ P ~D z,~-?~I i ...... I I " I I I I _-:ample Relinquished by: Time: .Sample Received by: Tim~.: Date: .3ample Relinquished ,o Lab by: ~-~_,&~ -"'"~ _.~, Time: ¢-'~" Date: Sample Condition When Rece y Lab: _ . Time: Date: Lab Sign at ure: ~ .¢-, .~ ,-'1'..~(,~. ~__~.¢~. Time: ~.'_~'-- Da,e: Post Office Box Bakersfield, California 93389-9217 - CHAIN OF CUSTODY DOCUMENT . Job Number: O.2c)5, 0o / c~ WZI Inc, ~ample Type: (check one) ~ Drinking Water ~ SurfaceWater ~WasteWater ~011 ~olI. ~ Sludge. ,. Other (specify) S~mple Number Date Collected Collector's Name Type of Analysis ,, Sample Relinquished by: Time: Date: Sample Received by: Time: Date: ~b Signature: Time: . D~te; Post Office Box Bakersfield, Calilornia 93389-9217 CHAIN OF CUSTODY DOCUMENT Job Number: z:~,,2~:~, (Dr} / 0 WZl Inc. ~ample Type: (check one) ~ Drinking Water ~ SurfaceWater WasteWater ~ O11 ~Soll __ Sludge. Other (specify) Sample Number Date Collected Collector's Name Type of Analysis Sample Relinquished by: Time: Date; Sample Received by: Time: Sample Relinquished to Lab by: Y/~.~ ~_,~//,~, ~..~ .,.,.,-..~.? Time: sample Received in Lab by: ~0 t Tim~: 5'/00,~ Date:~/~ _. _ ~ - -~ , . Sample Condition When Received By Lab: ~ ~ Time' ~.'/~ Date: ~b Signature: ~¢~~~/1~~ Time: Post O. ffice Box Bakersfield, California 93389-9217 CHAIN.OF CUSTODY DOCUMENT " Job Number: ~,,20¢. ~,o/D., WZl Inc. A~ention: ~, ~ample Type: (c~eck one) ~ Drinking Water ~ SurfaceWater ~WasteWater OI1.- Soil Sludge. ~ Other (specify) ~~ ~ ~~ ~ ' Leo Sample Number Date Collected~ ~ Collector's Name Type of Analysis 'i' 3ample Relinquished by: Time: D~te: Sample Received by: Time: Date: Sample Condition When Received By Lab: ~ Time: ~ '/~(._) Ds. te."~/c~ 9/~J~ ~b Signature: _~ ..... Time: RePort To: ~ Analysis Requested ,. Phone: La~ Sample Description: Date & Time Sampled , . Re,nqui~he~ by: (~ignatur~) ~iv~: (Signature) j ~, Date: Time: )X~ ,,' ~ 1" City State Relinquished by: (Signature) Rece[v~ by: (Signature) ._) Date: Time: A~enti°n: Relinquished by: (Signature) Received by: (Signature) Date: Time: Samplo ~is~sal ~.0.~ ~olinquishod b~: (Si~naturo) ~ocoiv~ b~: {Signature) ~[ limo: ~ Return to client Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: . 08/19/93 P.O. BOX 121 Lab ~: 93-07981-8 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: JOB ~0206.0010 LB-29, SAMPLED ON 08-09-93 BY A. WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 08/09/93 08/09/93 08/12/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. ~1186 Department '~upervi sor O cc: WZI ALLEN WAGGONER Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report:-. 08/19/93 P.O. BOX 121 Lab ~: 93-07981-9 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: JOB %0206.0010 LB-30, SAMPLED ON 08-09-93 BY A. WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received @ Lab: Completed: 08/09/93 08/09/93 08/12/93 · ~ Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. ~1186 Depar~nt ~upervisor ~ cc: WZI ALLEN WAGGONER Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O~TOM GILBERT Report: 08/19/93 P.O. BOX 121 Lab ~: 93-07981-1 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: JOB ~0206.0010 LB-31, SAMPLED ON 08-09-93 BY A.'WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received @ Lab: Completed: 08/09/93 08/09/93 08/12/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. Depar~e~t-- Supervi s or~ cc: WZI ALLEN WAGGONER ESTATE OF LEO BLACK Date Reported: 08/19/93 C/O TOM GILBERT Date Received: 08/09/93 P.O. BOX 121 Laboratory No.: 93-07981-2 WOFFORD HEIGHTS, CA 93285 000-0000 WET TEST EXTRACT CONTAMINANTS ANALYZED ACCORDING TO TITLE 22, ARTICLE 11, CALIFOP~NIA CODE OF REGULATIONS FOR HAZARDOUS WASTE DETERi~INATION (STLC) SamPle Description: JOB ~0206.0010 LB-23, SA~iPLED ON 08-09-93 BY A. WAGGONER. Regulatory Sample Results Method Criteria Constituents mq/liter P.Q.L. Method STLC Lead 0.84 0.5- SW-6010 5.0 Comment: Ail metals reported above are in mg/liter on a filtrate basis (STLC) . These results are based on extracting sample according to Title 22, Article 11, California Administrative Code using a 48-hour citric acid (deionized water for hexavalent chromium) extraction. P.Q.L. = Practical Quantitation Limit (refers to the least amount of analyte detectable ~ -..- based on sample size used and analy~ica! technique employed) ....... STLC = Soluble Threshold Limit Concentration REFERENCES: . ...... ~-.'. SW = "Test Methods for Evaluating Solid WastesPhysical/Chemical Methods", EPA-SW-846, Septe~er, 1986. ... Department Superv~r cc: WZI ALLEN WAGGONER '' ESTATE OF LEO BLACK Date Reported: 08/19/93 C/0 TOM GILBERT Date Received: 08/09/93 P.O. BOX 121 Laboratory No.: 93-07981-4 WOFFORD HEIGHTS, CA. 93285 000-0000 WET TEST EXTPJiCT CONT~LINANTS ANJ%LYZED ACCORDING TO TI~E 22, ARTICLE 11, CALIFOP~NIA CODE OF REGULATIONS FOR HAZARDOUS WASTE DETERMINATION (STLC) Sample Description: JOB $0206.0010 LB-25, SAMPLED ON 08-09-93 BY A. WAGGONER. Regu!atory Sample Results Method Criteria Constituents' mq/liter P.Q.L. Method STLC Lead None Detected 0.5 SW-6010 5.0 comment: Ail metals reported above are in mg/liter on a filtrate basis (STLC) . These results are based on extractin9 sample accordin9 to Title 22, 3lrticle 11, California Administrative Code using a 48-hour citric acid '(deionized water for hexavalent chromium) extraction. P.~Q.L. = Practical Quantitation Limit (refers to the least amount of analyte detectable based on sample size used and analytical technique employed). STLC = Soluble Threshold Limit Concentration .... :SW = "Test Methods for Evaluating Solid Wastes Physical/Chemical Methods", . . . EP~I-SW-SA6, September, 1986. D.epar~nt Supervis% cc: WZI - ALLEN WAGGONER "' · ESTATE OF LEO BLACK Date Reported: 08/19/93 C/O TOM GILBERT Date Received: 08/09/93 P.O. BOX 121 Laboratory No.: 93-07981-6 WOFFORD HEIGHTS, CA 93285 000-00OO WET TEST EXTRACT CONTAMISIA~TS ANALYZED ACCORDING TO TITLE 22, ARTICLE CALIFORNIA CODE OF REGUI~ATIONS FOR H3%ZA/~DOUS WASTE DETERI~INATION (STLC) Sample Description: JOB ~0206.0010 LB-27, SA~/PLED ON 08-09~93 BY A. WAGGONER. Regulatory Sample Results Method Criteria Constituents mq/liter P.Q.L. Method STLC Lead 1.5 0.5 SW-6010 5.0 Comment: Ail metals reported above are in mg/liter on a filtrate basis (STLC) . These results are based on extracting sample according to Title 22, .~rticle 11, California Administrative Code using a 48-hour citric acid (deionized water for hexavalent chromium) extraction. P.Q.L. = Practical Quantitation Limit (refers to the least amount of analyte detectable · based on sample size used and analytical technique employed). STLC" = Soluble Threshold Limit Concentration REFERENCES: .- .. _ ~. SW = "Test Methods for Evaluating Solid Wastes' Physical/ChemiCal Methods'', EPA-SW-846, September, 1986. Depa m~en~t~r cc: WZI - ~LLLEN WAGGONER '~B~DP~TE};~IES ESTATE OF LEO BLACK Date Reported: 08/19/93 C/O TOM GILBERT Date Received: 08/09/93 P.O. BOX 121 Laboratory No.: 93-07981-7 WOFFORD HEIGHTS, CA 93285 000-0000 WET TEST EXTPJ%CT CONTAMII~ANTS ANALYZED ACCORDING TO TITLE 22, ARTICLE ii, CALIFORNIA CODE OF P~EGULATIONS FOR HAZARDous WASTE DETERMLI~TION (STLC) Sample Description: JOB ~0206.0010 LB-28, SAMPLED ON 08-09-93 BY A. WAGGONER. Regulatory Sample Results Method Criteria Constituents mq/liter P.Q.L. Method STLC Lead None Detected 0.5 SW-6010 5.0 Comment: All metals reported above are in mg/liter on a filtrate basis (STLC) . These results are based on extracting sample according to Title 22, Article 1!, California Administrative Code using a 48-hour citric acid (deionized water for hexavalent chromium) extraction. P.Q.L. = Practical Quantita~ion Limit (refers to the least amount of analyte detectable based on sample size used and analytical technique employed).~ ..... STLC = Soluble Threshold Limit Concentration REFERENCES: SW = "Test Methods for Evaluating Solid Wastes Physical/Chemical Methods", EPA-SW-846, September, 1986. Depar~en~ Super~i~q~ cc: WZI - /%LLEN WAGGONER ESTATE OF LEO BLACK Date Reported: 08/19/93 C/O TOM GILBERT Date Received: 08/09/93 P..O. BOX 121 Laboratory No.: 93-07981-9 WOFFORD HEIGHTS, CA 93285 000-0000 WET TEST EXTRACT CONTAMINAITrS ANALYZED ACCORDING TO TITLE 22, ARTICLE 11, CALIFORNIA CODE OF REGULATIONS FOR HAZARDous WASTE DETERbLINATION (STLC) Sample Description: JOB ~0206.0010 LB-30, SAMPLED ON 08-09-93 BY A. WAGGONER. Regulatory Sample Results Method Criteria Constituents mg/liter P.Q.L. Method ..... STLC Lead 3.3 0.5 SW-6010 5.0 Comment: Ail metals reported above are in mg/liter on a filtrate basis (STLC). These results are based on extracting sample according to Title 22, Article !i, California Administrative Code using a 48-hour citric acid (deionized water for hexavalent chromium) extraction. P.Q.L. = Practical Quantitation Limit (refers to the least amount of analyte detectable based on sample size used a~d anal!rcical technique employed). STLC = Soluble Threshold Limit Concentration REFERENCES: SW = "Test Methods for Evaluating Solid Wastes Physical/Chemical Methods", EPA-SW-846, September, 1986. Department Superviso~ cc: WZI ALLEN WAGGONER .. ESTATE OF LEO BLACK Date Reported: 08/19/93 C/O TOM GILBERT Date Received: 08/09/93 P.O. BOX 121 Laboratory No.: 93-07981-1 WOFFORD HEIGHTS, CA 93285 000-0000 WET TEST EXTRACT CONT~IN3%NTSANALYZED ACCORDING TO TITLE 22, ARTICLE 11, CALIFORNIA CODE OF REGULATIONS FOR HAZARDOUS WASTE DETERMINATION (STLC) Sample Description: JOB $0206.0010 LB-31, SAMPLED ON 08-09-93 BY A. WAGGONER. Regulatory Sample Results Method Criteria Constituents mq/liter P.Q.L. Method STLC Lead 0.69 0.5 SW-6010 5.0 Comment: Ail metals reported above are in mg/liter on a filtrate basis (STLC) . These results are based on extracting sample according to Title 22, D. rEicle 11, California Administrative Code using a 48-hour citric acid (deionized water for hexavalent chromium) extraction. P.Q.L. = Practical Quantitation Limit (refers to the least amount of analyte detectable based on sample size used and analytical technique employed). STLC = Soluble Threshold Limit Concentration REFERENCES: SW = "Test Methods for Evaluating Solid Wastes Physical/Chemical Methods", EPA-SW-846, September,' 1986. DepOnent' Supez-v~or cc: WZI ALLEN WAGGONER Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 07/29/93 P.O. BOX 121 Lab ~: 93-07347-1 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: LEO BLACK PROJECT ~0206.0010 LB-1 SOIL IN BRASS TUBE, SAMPLED ON 07-26-93 ® 3:00PM BY ALLEN WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Individual constituents by EPA Method 5030/8020. Sample Matrix: Soil Date Sample Date Sample Date 'Analysis Collected: Received ® Lab: Completed: 07/26/93 07/26/93 07/28/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Benzene None Detected mg/kg 0.005 Toluene .......... None Detected mg/kg 0.005 Ethyl Benzene None Detected mg/kg 0.005 Total Xylenes None Detected mg/kg 0.01 Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. Total Petroleum ~ Hydrocarbons (diesel) None Detected mg/kg 10. California D.O.H.S. Cert. ~1186 Department Supez-visor cc: WZI - ~J~LEN WAGGONER Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 07/29/93 P.O. BOX 121 Lab ~: 93-07347-2 WOFFORD HEIGHTS, CA 93285 00'0-0000 Sample Description: LEO BLACK PROJECT ~0206.0010 LB-2 SOIL IN BRASS TUBE, SAMPLED ON 07-26-93 ® 3:00PM BY ALLEN WAGGONER. TEST ~ETHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Individual constituents by EPA Method 5030/8020. Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 07/26/93 07/26/93 07/28/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Benzene ........ None Detected mg/kg 0.005 Toluene None Detected mg/kg 0.005 Ethyl Benzene None Detected mg/kg 0.005 Total Xylenes None Detected mg/kg 0.01 Total Petroleum Hydrocarbons (gas) ~ None Detected mg/kg !. Total Petroleum Hydrocarbons (diesel) None Detected mg/kg 10. California D.O.H.S. Cert. ~=1186 'Department SuPe-~zi sor cc: WZI - ALLEN WAGGONER Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 07/29/93 P.O. BOX 121 Lab ~: 93-07347-3 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: LEO BLACK PROJECT ~0206.0010 LB-3 SOIL IN BRASS TUBE, SAI~PLED ON 07-26-93 ® 3:00PM BY ALLEN WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Individual constituents by EPA Method 5030/8020. Sample. Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 07/26/93 .07/26/93 07/28/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Benzene " ..... None Detected mg/kg 0.005 Toluene None Detected mg/kg 0.005 Ethyl Benzene None Detected mg/kg 0.005 Total Xylenes None Detected mg/kg 0.01 Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. Total Petroleum Hydrocarbons (diesel) None Detected m~/kg 10. California D.O.H.S. Cert. ~1186 Department Supervisor cc: WZI - ALLEN WAGGONER petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 07/29/93 P.O. BOX 121 Lab ~: 93-07347-4 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: LEO BLACK PROJECT 50206.0010 LB-4 sOiL IN BRASS TUBE, SAMPLED ON 07-26-93 @ 3:00PM BY ALLEN WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Individual constituents by EPA Method 5030/8020. Sample Matrix:. Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 07/26/93 07/26/93 07/28/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Benzene ....... None Detected mg/kg 0.005 Toluene None Detected mg/kg 0.005 Ethyl Benzene None Detected mg/kg 0.005 Total Xylenes None Detected mg/kg 0.01 Total Petroleum Hydrocarbons (gas) ~ None Detected mg/kg 1. Total Petroleum Hydrocarbons (diesel) None Detected mg/kg !0. California D.O.H.S. Cert. ~1186 Department Supervisor cc: WZI ALLEN WAGGONER Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 08/02/93 P.O. BOX 121 Lab #: 93-07496-1 ~4 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: JOB ~0206.0010 LB-5 (SOIL), SAMPLED ON 07-28-93 BY A. WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Individual constituents by EPA Method 5030/8020. Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 07/28/93 07/29/93 07-30-93 Minimum /%nalysis Reporting Reporting Constituents Results Units Level Benzene None Detected mg/kg 0.005 Toluene None DetecTed mg/kg 0.005 Ethyl Benzene None DetecTed mg/kg 0.005 Total Xylenes None DetecTed mg/kg 0.01 Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. Total Petroleum Hydrocarbons (diesel) None Detected mg/kg 10. California D.O.H.S. Cert. 51186 Department Supervisor cc: WZI ' '~" Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 08/02/93 P.O. BOX 121 Lab ~: 93-07496-2 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: JOB ~0206.0010 LB-6 (SOIL), SAMPLED ON 07-28-93 BY A. WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Individual constituents by EPA Method 5030/8020. Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 07/28/93 07/29/93 07-31-93 Minimum Analysis Reporting Reporting Constituents Results Units Level Benzene None Detected mg/kg 0.005 Toluene None Detected mg/kg 0.005 Ethyl Benzene None Detected mg/kg 0.005 Total Xylenes None Detected mg/kg 0.01 Total Petroleum Hydrocarbons (gas) 14. mg/kg 1. Total Petroleum ~ Hydrocarbons (diesel) 100. mg/kg 10. California D.O.H.S. Cert. $1186 Department Supervisor cc: WZI Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 08/02/93 P.O. BOX 121 Lab ~: 93-07496-3 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: JOB ~0206.0010 LB-7 (SOIL), SAMPLED ON 07-28-93 BY A. WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Individual constituents by EPA Method 5030/8020. Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received @ Lab: Completed: 07/28/93 07/29/93 07-30-93 Minimum Analysis Reporting Reporting Constituents Results Units Level Benzene None Detected mg/kg 0.04 Toluene None Detected mg/kg 0.04 Ethyl Benzene None Detected mg/kg 0.04 Total Xylenes None Detected mg/kg 0.09 Total Petroleum 430 mg/kg 9 Hydrocarbons (gas) ! · . Total Petroleum Hydrocarbons (diesel) 680. mg/kg 100. Note: High reported PQL's due to high hydrocarbon. background. California D.O.H.S. Cert. ~1186 Department ~pervisor cc: WZI BTXE Analysis .ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 07/30/93 P.O. BOX 121 Lab ~: 93-07560-1 WOFFORD HEIGHTS, CA 93285 Sample Description: JOB ~0206.0010:LB-8 (SOIL) 07-29-93 SAMPLED BY A. WAGGONER TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ~ Lab: Comple=ed: 07/29/93 07/29/93 07/29/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg !.. California'D.O.H.S. Cer~. ~1186 Department Supervisor cc: WZI - ~LLEN WAGGO~R -. BTXE Analysis ESTATE OF LEO BIJ%CK Date of C/O TOM GILBERT Report: 07/30/93 P.O. BOX 121 Lab 5: 93-07560-2 WOFFORD HEIGHTS, CA 93285 Sample Description: JOB ~0206.0010:LB-9 (SOIL) 07-29-93 SAMPLED BY A. WAGGONER TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil .-'b~t~'~samPle .. ' ....... Date. Sample ................ Date Analysis .............. Collected: Received @ Lab: Completed:. 07/29/93 07/29/93 07/29/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg' 1. California D.O.H.S. Cert. 51186 Department Supervisor cc: WZI - ALLEN WAGGONER BTXE Analysis ESTATE 'OF LEO BLACK Date of C/O TOM GILBERT Report: 07/30/93 P.O. BOX 121 Lab ~: 93-07560-3 WOFFORD HEIGHTS, CA 93285 Sample Description: JOB ~0206.0010:LB-10 (SOIL) 07-29-93 SAMPLED BY A. WAGGONER TEST M~THOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis .... Collected: Received ® Lab: Completed: 07/29/93 07/29/93 07/29/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/k~ 1. California D.O.H.S. Cert. ~1186 Department Super~;i sor cc: - WZI - ~J~LEN WAGGONER BTXE Analysis ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 07/30/93 P.O. BOX 121 Lab $: 93-07560-4 WOFFORD HEIGHTS, CA 93285 Sample Description: JOB $0206.0010: LB-II (SOIL) 07-29-93 SAb~PLED BY A. WAGGONER TEST METHOD:' TPH by D.O.H.S. / L.U.F.T. Manual' Method - Modified EPA 8015 Sample Matrix: Soil Da~e Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 07/29/93 07/29/93 07/29/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. ~1186 Department Supervisor cc: WZI ALLEN WAGGONER BTXE Analysis ESTATE OF LEO BLACK Date of C/O TOM GILBERT .Report: 07/30/93 P.O. BOX 121 Lab ~: 93-07560-5 WOFFORD HEIGHTS, CA 93285 Sample Description: JOB ~0206.0010:LB-12 (SOIL) 07-29-93 SAMPLED BY A. WAGGONER TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: S0il " .... Date:"" .... Sample" ' '--:'~ Date Sam~'e ............ Date Analysis' ..... Collected: Received ® Lab: Completed: 07/29/93 07/29/93 07/29/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. ~1186 Department Supervisor cc: WZI - ALLEN WAGGONER BTXE Analysis ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 07/30/93 P.O. BOX 121 Lab ~: 93-07560-6 WOFFORD HEIGHTS, CA 93285 Sample Description: JOB ~0206.0010:LB-13 (SOIL) 07-29-93 SAMPLED BY A. WAGGONER TEST METHOD: TPH by D.O.H.S. ~ L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed:~ 07/29/93 07/29/93 07/29/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg California D.O.H.S. Cert. ~1186 Department Supervisor cc: WZI ALLEN WAGGONER ' BTXE Analysis ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 07/30/93 P.O. BOX 121 Lab ~: 93-07560-7 WOFFORD HEIGHTS, CA 93285 Sample Description: JOB ~0206.0010:LB-14 (SOIL) 07-29-93 SAMPLED BY A. WAGGONER TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 07/29/93 07/29/93 07/29/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. ~1186 Department S~pervisor cc: WZI ALLEN WAGGONER ~3;:~'n3Fql~S BTXE Analysis ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 07/30/93 P.O. BOX 121 Lab $: 93-07560°8 WOFFORD HEIGHTS, CA 93285 Sarmple Description: JOB ~0206.0010:LB-15 (SOIL) 07-29-93 S~IPLED BY A. WAGGONER TEST FiETHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 80~5 Sample Matrix: Soil Date'Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 07/29/93 07/29/93 07/29/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. $1186 Departmen~ Supervisor cc: WZI - ~%LLEN W3%GGONER BTXE Analysis ESTATE OF LEO BLACK Date of C/0 TOM GILBERT Report: 07/30/93 P.O. BOX 121 Lab ~: 93-07560-9 WOFFORD HEIGHTS, CA 93285 Sample Description: JOB ~0206.0010:LB-16 (SOIL) 07-29-93 SAbIPLED BY A. WA~GONER TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 SamPle Matrix: Soil Date sample Date Sample Date A~alysis Collected: Received ® Lab: Completed: 07/29/93 07/29/93 07/29/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. $1186 Department Supervisor cc: WZI ALLEN WAGGONER ..... ~. -, 41 (2~)Aclas Oz. · Eisker~-d:ietcl, ~ 933C~ · (E)fD~ 32-7~4911 · PAX (15)05) 327-1 91 8 BTXE Analysis ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 07/30/93 P.O. BOX 121 Lab %: 93-07560-10 WOFFORD HEIGHTS, CA 93285 Sample Description: JOB ~0206.0010:LB-17 (SOIL) 07-29-93 SAblPLED BY A.- WAGGONER TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - M~dified EPA 8015 Sample Matrix: Soil DaCe Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 07/29/93 07/29/93 07/29/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. CalifOrnia D.O.H.S. Cer~. ~1186 Department Su~el-visor cc: WZI - ALLEN WAGGONER BTXE Analysis ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 07/30/93 P.O. BOX 121 Lab ~: 93-07560-11 WOFFORD HEIGHTS, CA 93285 San~le Description: JOB ~0206.0010:LB-18 (SOIL) 07-29-93 SA~IPLED BY A. WAGGONER TEST METHOD: TPH by D.O.H.S. / L.U.F.T. l~anual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 07/29/93 07/29/93 07/29/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. 51186 Department Supervisor cc: WZI ALLEN WAGGONER .41C~,-dss [Lc. · ~aker',~elc~, C~ ~3(D8 · ~ 3~'7-.491 I ,' F~TM. (E)(2)5'] ~--~"7-1 ~)1B Petroleum Hydrocarbons ~ ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 08/02/93 P.O. BOX 121 Lab ~: 93-07560-12 WOFFORD HEIGHTS, CA 93285 Sample Description: JOB ~0206.0010:LB-19 (SOIL) 07-29-93' SAblPLED BY A. WAGGONER TEST I~ETHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 07/29/93 07/29/93 07/30/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas). None Detected mg/kg 1. California D.O.H.S. Cert. 51186 ....- .... ... ~.---:.-..- .~..-..::~..:~.~.~; -..:..-~ ............. Department Supervisor cc: WZI - ALLEN WAGGONER Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O. TOM GILBERT Report: 08/02/93 P.O. BOX 121 Lab ~: 93-07560-13 WOFFORD HEIGHTS, CA 93285 Sable Description: JOB ~0206.0010:LB-20 (SOIL) 07-30-93 SAMIPLED BY A. WAGGONER TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample " Date Sample Date Analysis' Collected: Received ® Lab: Completed: 07/30/93 07/30/93 07/30/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. ~1186 Department Supe-~isor cc: WZI - ALLEN WAGGONER Petroleum Hydrocarbons ESTATE OF_ LEO BLACK Date of C/0 TOM GILBERT Report: 08/02/93 - P.O', BOX 121 Lab ~: 93-07560-14 WOFFORD HEIGHTS, CA 93285 Sample Description: JOB ~0206.0010:LB-21 (SOIL) 07-30-93 SAMPLED BY A. WAGGONER TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received @ Lab: Completed: 07/30/93 07/30/93 07/30/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. ~1186 Department Supervisor cc: WZI - A~I.~N WAGG01~R Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 08/02/93 P.O. BOX 121 Lab ~: 93-07560-15 WOFFORD HEIGHTS, CA 93285 -' Sample Description: JOB 50206.0010:LB-22 (SOIL) 07-30-93 SA~IPLED BY A. WAGGONER TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 07/30/93 07/30/93 07/30/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. 51186 Department Supervisor cc: WZI - ALLEN WAGGONER 'Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 08/19/93 - P.O. BOX 121 'Lab ~: 93-07981-2 WOFFORD HEIGHTS, CA. 93285 000-0000 Sample Description: JOB ~0206.0010 LB-23, .SAMPLED ON 08-09-93 BY A. WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date D_nalysis Collected: Received ® Lab: Completed: 08/09/93 08/09/93 08/12/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. ~1186 Depart~nt S~ cc: WZI - .h~,LEN WAC~ORER 4100/k~as Cc. · Bakersfield. C,~ ~ · (E)(2~ :3~--m7'-~91 I · F,~X (19(i)~ 3~-~'7-191 8 Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 08/19/93 P.OJ.~BOX 121 Lab ~: 93-07981-3 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: JOB %0206.0010 LB-24, SAMPLED ON 08-09-93 BY A. WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 08/09/93 08/09/93 08/12/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. ~1186 Depar~t Superviso~ cc :' WZI - A.LLEN WAGGONER Petroleum Hydrocarbons. ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 08/19/93 P.O. BOX 121 Lab ~: 93-07981-4 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: JOB ~0206.0010 LB-25, SAM~PLED ON 08-09-93 BY A. WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received @ Lab: 'Completed: 08/09/93 08/09/93 08/12/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. ~1186 Depa~-r_m~t Supervi~ cc: WZI - ALLEN WAGGONER Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report.: 08/19/93 P.O. BOX 121 Lab ~: 93-07981-6 WOFFORD HEIGHTS, CA 93285 000-0000 'San~ple Description: JOB ~0206.0010 LB-27, SAMPLED ON 08-09-93 BY A.' WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. ~%nual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 08/09/93 08/09/93 08/12/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. $1186 Department SupervisOr cc: WZI ALLEN WAGGONER Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 08/19/93 P.O. BOX 121 Lab $: 93-07981-7 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: JOB ~0206.0010 LB-28, SAMPLED ON 08-09-93 BY A. WAGC, ONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received @ Lab: Completed: 08/09/93 08/09/93 08/12/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. $1186 Depar--q~ent SuperiOr cc: WZI - ALLEN WAGGONER Petroleum Hydrocarbons ESTATE OF LEO BLACK Date of C/O TOM GILBERT Report: 08/19/93 P.O. BOX 121 Lab $: 93-07981-7 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: JOB $0206.0010 LB-28, SAMPLED ON 08-09-93 BY A. WAGC-ONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 08/09/93 08/09/93 08/12/93 Minimum Analysis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. Depar'~-~ent ~r cc: WZI - AT~T~EN WAGGONER Petroleum Hydrocarbons ESTATE OF LEO BLACK . Date of C/OTOM GILBERT Report: 08/19/93 P.O. BOX 121 Lab ~: 93-07981-1 WOFFORD HEIGHTS, CA 93285 000-0000 Sample Description: JOB ~0206.0010 LB-31, SAMPLED ON 08-09-93 BY A.'WAGGONER. TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Sample Matrix: Soil Date Sample Date Sample Date Analysis Collected: Received ® Lab: Completed: 08/09/93 08/09/93 08/12/93 Minimum~ AnalYsis Reporting Reporting Constituents Results Units Level Total Petroleum Hydrocarbons (gas) None Detected mg/kg 1. California D.O.H.S. Cert. Depar~e~t--Supervisor~ cc: WZI ALLEN WAGGONER 41 00A~las Ct.. Baker~-fietc~, CA 93308 · (805~ 327~491 I · FAX (SCb---) 327-1 91 8 ESTATE OF LEO BLACK Date Reported: 08/19/93 C/O TOM GILBERT Date Received: 08/09/93 P.O. BOX 121 Laboratory No.: 93-07981-2 WOFFORD HEIGHTS, CA 93285 000-0000 WET TEST EXTRACT CONTAMIN~.NTS ANALYZED ACCORDING TO TITLE 22, ARTICLE 11, CALIFORNIA CODE OF REGULATIONS FOR HAZARDOUS WASTE DETERMINATION (STLC) Sample Description: JOB ~0206.0010 LB-23, SAMPLED ON 08-09-93 BY A. WAGGONER. Regulatory Sample Results Method Criteria Constituents mg/liter p.Q.L. Method STLC Lead 0.84 0.5- SW-6010 5.0 Comment: Ail metals reported above are in mg/liter on a filtrate basis (STLC) . These results are based on extracting sample according to Title 22, Article 11, California Administrative Code using a 48-hour citric acid (deionized water for hexavalent chromium) extraction. P.Q.L. = Practical Qu~ntitation Limit (refers to the least amount of analyte detectable · .'~:-_- based on sample size used and. analy~ica! technique employed)..~. ...~ ..... STLC = Soluble Threshold Limit Concentration SW = "Test Methods for Evaluating Solid Wastes.Physical/Chemical Methods", EPA-SW-846, September, 1986. ... Depa~ment Superv~r cc: WZI ALLEN WAGGONER ESTATE OF LEO BLACK Date Reported: 08/19/93 C/O TOM GILBERT Date Received: 08/09/93 P.O. BOX 121 Laboratoz~ No.: 93-07981-4 WOFFORD HEIGHTS, CA 93285 000-00'00 WET TEST EXTRACT CONTAF~IblANTS ANALYZED ACCORDING TO TI~E 22, ARTICLE 11, CALIFORNLA CODE OF REGULATIONS FOR HAZ2%RDOUS WASTE DETERMINATION (STLC) Sample Description: JOB 50206.0010 LB-25, SAMPLED ON 08-09-93 BY A. WAGGONER. Regulatory Sample Results Method Criteria Constituents' mq/liter P.Q.L. Method STLC Lead None Detected 0.5 SW-6010 5.0 Comment: Ail metals reported above are in mg/liter on a filtrate basis (STLC). These results are based on extracting sample according to Title 22, Article 11, California Administrative Code using a 48-hour citric acid (deionized water for hexavalent chromium) extraction. P..Q.L. = Practical Quantitation Limit (refers to the least amount, of analyte detectable ~,'.-- based on sample size used and analytical technique employed). STLC = Soluble Threshold Limit Concentration '. .....oSW = "Test Methods for Evaluating Solid Wastes Physical/Chemical Methods", EPA-SW-846, September, 1986. Depar~ent Sup~ cc: WZI - A/~LEN WAGGONER ESTATE OF LEO BLACK Date Reported: 08/19/93 C/O TOM GILBERT Date Received: 08/09/93 P.O. BOX 121 Laboratory No.: 93-07981-6 WOFFORD HEIGHTS, CA 93285 000-0000 WET TEST EXTRACT CONTAMISlAlqTS ANALYZED ACCORDING TO TITLE 22, ARTICLE CALIFORNIA CODE OF REGULATIONS FOR HAZARDOUS WASTE DETEP, MINATION (STLC) Sample Description: JOB $0206.0010 LB-27, SAMIPLED ON 08-09-93 BY A. WAGGONER. Regulatory Sample Results Method Criteria Constituents mq/liter P.Q.L. Method STLC Lead 1.5 0.5 SW-6010 5.0 Comment: Ail metals reported above are in mg/liter on a filtrate basis (STLC) . These results are based on extracting sample according to Title 22, .~rticle 11, California Administrative Code using a 48-hour citric acid (deionized water for hexavalent chromium) extraction. P.Q.L. = Practical Quan~itation Limit (refers to the least afaoun~ Of analyte detectable based on sample size used and analyticaI technique employed). STLC'" = Soluble Threshold Limit Concentration · REFERENCES: .. · . · -. SW = "Test Methods for Evaluating Solid Wastes' Physical/ChemiCal Methods'', EPA-SW-846, September, 1986. Depa~ent ~r cc: WZI ALLEN WAGGONER ESTATE OF LEO BLACK Date Reported: 08/19/93 C/O TOM GILBERT Date Received: 08/09/93 P.O. BOX 121 Laboratoz'~ No.: 93-07981-7 WOFFORD HEIGHTS, CA 93285 000-0000 WET TEST EXTRACT CONTAMINANTS ANALYZED ACCORDING TO TITLE 22, ARTICLE Il, CALIFORNIA CODE OF REGULATIONS FOR HAZARDOUS WASTE DETERlW_INATION (STLC) Sample Description: JOB ~0206.0010 LB-28, SAMPLED ON 08-09-93 BY A. WAGGONER. Regulatory Sample Results Method Criteria Constituents mq/liter P.Q.L. Method STLC Lead None Detected 0.5 SW-6010 5.0 Comment: Ail metals reported above are in mg/liter on a filtrate basis (STLC) . These results are based on extracting sample according to Title 22, Article 1!, California Administrative Code using a 48-hour citric acid (deionized water for hexavalent chromium) extraction. P.Q.L. = Practical Quantitation Limit (refers to the least amount of analyte detectable based on sample size used and analytical technique employed). - .......... STLC = Soluble Threshold Limit Concentration REFERENCES: ~ SW = "Test Methods for Evaluating Solid Wastes Physical/chemical Methods", EPA-SW-846, September, 1986. D epar~5~en~ Supez-vi o~q~ cc: WZI - ALLEN WAGGONER ' ESTATE OF LEO BLACK Date Reported: 08/19/93 C/O TOM GILBERT' Date Received: 08/09/93 P..O. BOX 121 Laboratory No.: 93-07981-9 'W0FFORD HEIGHTS, CA 93285 000-0000 WET TEST EXTRACT CONTAMINANTS ANALYZED ACCORDING TO TITLE 22, ARTICLE 11, CALIFORI~IA CODE OF REGULATIONS FOR HAZJ%RDOUS W;%STE DETERMINATION (STLC) Sable Description: JOB ~0206.0010 LB-30, SAMPLED ON 08-09-93 BY A. WAGGONER. Regulatory Sample Results Method Criteria Constituents mq/liter P.Q.L. Method ...... STLC Lead 3.3 0.5 SW-$010 5.0 Comment: Ail metals reported above are in mg/liter on a filtrate basis (STLC). These results are based on extracting sample according to Title 22, Article ii, California Administrative Code using a 48-hour citric acid (deionized water for hexavalent chromium) extraction. P.Q.L. = Practical Quantitation Limit (refers to the least amount of analyte detectable based on sample size used and analytical technique employed). STLC = Soluble Threshold Limit Concentration REFERENCES: '. .... ., SW = "Test Methods for Evaluating Solid Wastes Physical/Chemical Methods", EPA-SW-846, September, 1986. Deparr_men~ Superviso~ cc: WZI ALLEN WAGGONER .. ESTATE OF LEO BLACK Date Reported: 08/19/93 C/0 TOM GILBERT Date Received: 08/09/93 P.O. BOX 121 Laboratory No.: 93-07981-1 WOFFORD HEIGHTS, CA 93285 000-0000 WET TEST EXTRACT CONTAMINANTS ANALYZED ACCORDING TO TITLE 22, ARTICLE 11, CALIFORNIA CODE OF REGULATIONS FOR ~OUS WASTE DETERMINATION (STLC) Sample Description: JOB ~0206.0010 LB-31, S~IPLED ON 08-09-93 BY A. WAGGONER. Regulatory Sample Results Method Criteria Constituents mg/liter P.Q.L.. Method STLC Lead 0.69 0.5 SW-6010 5.0 Comment: All metals reported above are in mg/liter on a filtrate basis (STLC) . These results are based on extracting sample according to Title 22, Article 11, California Administrative Code using a 48-hour citric acid (deionized water for hexavalent chromium) extraction. P.Q.L. = Practical Quantitation Limit (refers to the least amount of analyte detectable based on sample size used and analytical technique employed). STLC = Soluble Threshold Limit Concentration REFERENCES: SW = "Test 'Methods for Evaluating Solid Wastes Physical/Chemical Methods", EPA-SW-846, September,' 1986. ' Dep~~en~ ~or cc: WZI - ~J~LEN WAGGONER