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Home My WebLink About4050 GOSFORD ROAD (5)SUSTAINABLE STRATEGIES FOR GLOBAL LEADERS May 22, 2008 DELTA Project: SCA4050G1 SAP No. 121224 Mr. Howard Wines III Environmental Services City of Bakersfield Fire Department 1715 Chester Avenue, 3rd Floor Bakersfield, California 93706 -2020 DELTA a..b, .1. Inogen; „— Re: Low -Risk Site Closure Request Shell Service Station 4050 Gosford Road Bakersfield, California Dear Mr. Wines: On behalf of Equilon Enterprises LLC dba Shell Oil Products US (SHELL), Delta Consultants (DELTA) presents this Low -Risk Site Closure Request for the site referenced above (Figure 1). Per the conversation between you and Mr. Ross Inouye of DELTA, and the limited residual hydrocarbons in the soil beneath the site, DELTA submits this request for site closure without performing soil confirmation borings. SHELL and DELTA request case closure for this site based on current site conditions and the following criteria for low -risk case classification: Site Characterization - The site has been adequately characterized. Water Quality Protection - No drinking water wells, aquifers, or surface waters have been or are likely to be affected. 911 SOUTH PRIMROSE AVENUE SUITE K MONROVIA, CALIFORNIA 91016 USA PHONE 626.256.6662 / 800.477.7411 FAx 626.256.6263 WWW.DELTAENV.COM Mr. Howard Wines III City ofBakersfield Fire Department, Environmental Services May 22, 2008 Page 2 BACKGROUND SITE DESCRIPTION The subject site is currently an active Shell service station located on the northeast corner of the intersection of Gosford Road and White Lane in the city of Bakersfield, California (Figure 1). The site is located in a commercial and residentially mixed area of Bakersfield. The service station consists of three 10,000 - gallon and one 12,000 - gallon gasoline underground storage tanks (USTs), two dispenser islands each equipped with two multi - product dispenser pumps, a carwash, and a station building (Figure 2): PREVIOUS INVESTIGATIONS Previous environmental activities at the site are summarized in the table below. Well and boring data is presented in Table 1. Historical soil analytical data is presented in Table 2. Historical soil sampling locations are shown on Figure 2. YA_ sal smsW\4050 Cctdord\20,0M5 -22 L - Risk n Request Date : Activity / No: of Borings / Reporf Consultant Comments 1Vleth0d .: Samples Dates.:' Phase H 6 Soil Borings Pacific Petroleum hydrocarbons 1 /00 Environmental BB -1 through Unknown Environmental detected in soil (BB -1, BB -2SiteBB -6) Group (PEG) and BB -6) Assessment Total Petroleum Hydrocarbons as gasoline 8 Soil Samples in TPH -g) and Total Petroleum the Former Hydrocarbons as Diesel Soil Sampling Dispenser Area IT TPH -d) detected with 7/01 during SB989 and 12 Soil Unknown Corporation maximum concentrations of Upgrade Samples in the IT) 10 milligrams per kilogram Activities Former Piping mg/kg) and 210 mg/kg, Area respectively. Maximum methyl tert -butyl ether MTBE) detected at 13 mg/kg. TPH -g detected at a Over- 8 Soil Samples in maximum concentration of 7/01 Excavation Over - Excavation Unknown IT 7.9 mg/kg. Maximum MTBE Activities Area detected at 16 mg/kg. Fifty cubic yards of soil removed. YA_ sal smsW\4050 Cctdord\20,0M5 -22 L - Risk n Request Mr. Howard Wines III City ofBakersfield Fire Department, Environmental Services May 22, 2008 Page 3 StJMMARY.(Continued) ., Date Activity / No. of Borings = Report, ; Consultant Comments° " Method_ :; Samples, Date, Maximum TPH -g detected at Site 6 soil borings to WGR 15 mg/kg, maximum TPH -d 6/03 Assessment maximum 65 feet 7/21/02 Southwest, detected at 4.6 mg/kg, and Activities bgs (BB -7 Inc. (WGR) maximum MTBE detected atthroughBB -12) 16 mg/kg Maximum MTBE and tert- Site 8 soil borings to butyl alcohol (TBA) 5/03 Assessment maximum feet 6/16/03 WGR concentrations in soil were Activities 1 3bgs (BB -1 47 mg/kg and 16 mg/kg, through BB -20) respectively All wells constructed with 2 -inch Schedule 40 PVC withSoilVapor5dual- nested 0.020 -inch slotted screen. 9/03 Extraction SVE wells 10/27/03 WGR Maximum MTBE and TBASVE) Well VEW -1 through concentrations in soil wereInstallationVEW -5) 85 mg/kg and 29 mg/kg, respectively Site tested to obtain data on vapor extraction parameters for use to design an SVE remediation system. Radius of influence (ROI) up to 25 feet for wells screened in the 12/03 SVE Pilot 2/9/04 DELTA shallow zone and 33 feet for Test wells screened in the deep zone. TPH -g mass removal rates estimated at 53.9 pounds per day (lbs /day) and MTBE mass removal rates estimated at 37.5 lbs /day Update to Submitted revised SVE test 4/04 Results of 4/15/04 DELTA calculations, which resulted SVE Pilot in increased values for flow Tests and mass removal rate Proposed natural attenuation with long term monitoringCorrectiveMNA) as the remedial11/04 Action Plan 11/11/04 DELTA approach to address residualRAP) hydrocarbons in vadose zone soils IY:\ Shell SitmWW050Gnfo,d20p8 -05 -22_Lm Rids Clo Request Mr. Howard Wines III City ofBakersfield Fire Department, Environmental Services May 22, 2008 Page 4 SUMMARY (Continped) . Date' Activity,,[ No: of Borings' /' Report, Consultant_ CommentsMethodSamplesDate: Confirmation Documented_ verbal approvalofVerbal of RAP by the City of1 /05 Approval: 1/24/05 DELTA Bakersfield Fire DepartmentRemedial CBFD) Action Plan Permission to Described proposed scope of Discharge Soil work for vapor monitoring, Vapor from which includes the release of 4/05 Onsite Wells 4/4/05 DELTA soil vapors into the into the atmosphere. Requested Atmosphere permission to discharge soil vapors into the atmosphere. Submitted quarterly updates I - Quarterly including soil vapor Present Updates Various DELTA monitoring data to monitor natural attenuation parameters REGIONAL GEOLOGY AND HYDROGEOLOGY The geologic conditions in the site vicinity are characterized from alluvial deposits underlain by marine and non - marine sedimentary units, metamorphic rocks, and crystalline basement material. Surface and near - surface conditions is designated by the U.S. Geological Survey (USGS) as older alluvium, deposited in northwest- dipping alluvial fans resulting from outwash from the Sierra Nevada mountain range to the east. This alluvium is composed primarily of poorly graded and unconsolidated sands, sandy gravels, and occasional discontinuous lenticular bodies of sandy clay and silt. Regionally, the surface of these old alluvial fans in undulatory, with a distinct dip toward the Kern River to the northwest of the site. The site itself is located along one of the crests of the alluvial fan surface `ripples', at an elevation of approximately 390 feet above mean sea level (MSL). The total thickness of the alluvial fan deposits is estimated to range from approximately 600 feet west of the site to over 4,000 feet near the Sierra Nevada Mountains. The site lies within the Edison hydrogeologic sub -area of the Edison- Maricopa area. Uppermost groundwater within this area occurs within the old alluvial fan deposits. In the site vicinity, deeper aquifers of limited areal extent are present in the consolidated non - marine sedimentary units and within fracture zones of the crystalline basement rock. The most prominent subsurface features controlling the groundwater flow direction are the groundwater Y:\_ShcH s,t414050 c.«rur&200&4D5.22 _w- Risk Cl a«reg Mr. Howard Wines III City of Bakersfield Fire Department, Environmental Services May 22, 2008 Page 5 barriers formed by the northwest -to- southwest trending Edison Fault and subparallel splays of this fault, located south and north of the site, respectively. According to the records at the Kern County Water Agency, depth to groundwater measurements in the vicinity of the subject site taken in October of 2002 were approximately 160 feet below grade surface (bgs)." WGF, 2003) The soils encountered at the site during vapor extraction well installation activities during September 2003 consisted primarily of fine- grained sand to approximately 65 feet bgs. A sandy to silty clay layer was encountered above approximately 12 feet bgs. Well construction details are presented on Table 1. WELL RECEPTOR INFORMATION The nearest surface water body is the Arvin Edison Canal, which is field- verified to be approximately 670 feet northeast of the site. Buena Vista Lake Bed is located approximately 1,020 feet northeast of the site. The nearest municipal well (CBK 14 -01, 30S/27E -20B01 M) is field- verified to be approximately 3,900 feet southwest of the site; it is listed as active. SENSITIVE RECEPTORS The site is located in a primarily commercial area with some residential areas nearby. According to the sensitive receptor survey performed by DELTA in 2005, a day care center and a school are located within a half -mile radius from the site. Cindy Bear Day Care is field- verified to be 1,926 feet northeast of the site, and Tevis Junior High School is field- verified to be 2,003 feet west of the site. EVALUATION OF LOW -RISK CRITERIA SITE CHARACTERIZATION SOIL DELINEATION Detectable concentrations of TPH -g, TPH -d, benzene, toluene, ethyl- benzene, and xylenes (BTEX compounds), and MTBE, TBA, di- isopropyl ether (DIPE), ethyl tert-butyl ether (ETBE), and tert-amyl methyl ether (TAME) [fuel oxygenates] were encountered in soil samples collected during soil boring (BB -1 through BB -20), tank -pull activities, and vapor extraction well installation (VEW -1 through VEW -5). Vapor extraction wells were screened within a shallow zone (screened within the interval of 5 to 30 feet bgs) and a deep zone (screened within the interval of 35 to 65 feet bgs). Historical soil analytical data are presented in Table 2. Historical sampling locations are shown on Figure 2. UST Complex. The first hydrocarbon- impacted soil zone is located in the vicinity of the UST pit. This area is identified by soil samples collected surrounding the USTs to the northwest (BB -9, BB -18, VEW -5, and P- 3), the southwest (BB -1, BB -11, BB -15, VEW -2, and P -2), the southeast (BB -16 and VEW -3) and the northeast (BB -2, BB -12, BB -17, and VEW -4). In this area, TPH -d was detected in soil borings P -2, BB -1, BB -2, and BB -9. TPH -d was detected at a maximum concentration of 31 mg/kg in soil sample P -2 -10; however, this area was subsequently over - excavated to non - detect TPH -d concentrations. TPH -d was also YA Shell SitesWW050 GosfofdMOM5 -22_L Risk ClosureRequest Mr. Howard Wines III City of Bakersfield Fire Department, Environmental Services May 22, 2008 Page 6 identified in the shallow zone (0 to 30 feet bgs) at a maximum concentration of 11 mg/kg (BB -2 @ 25 feet bgs). TPH -d was only detected in one sample (BB -9 @ 35 feet bgs) in the deep zone (35 to 85 feet bgs) at a concentration of 2 mg/kg. TPH -g was detected in soil borings P -2, BB -9, BB -11, BB -12, BB -15, 1313-17, BB- 18, VEW -2, VEW -3, VEW -4, and VEW -5 at a maximum concentration of 15 mg/kg (1313-9 @ 20 feet bgs) in the shallow zone.and 12 mg/kg (BB -12 @ 40 feet bgs) in the deep zone. BTEX compounds were detected in soil sample P -2 -10, however this area was subsequently over - excavated to non - detect concentrations. BTEX compounds were not detected in the remaining soil samples, with the exception of a concentration of 6.6 mg/kg of toluene in soil sample BB-1 8 at a depth of 65 feet bgs. MTBE was detected in all of the soil boring locations in the area of the USTs. The maximum concentrations of MTBE detected were 51 mg/kg (1313-2 @ 20 feet bgs) in the shallow zone and 29 mg/kg (VEW -3 @ 40 feet bgs) in the deep zone. TBA was detected in soil borings P -2, B13-15, BB -16, BB -17, BB -18, VEW -2, VEW -3, VEW-4, and VEW -5. The maximum concentrations of TBA detected were 29 mg/kg (VEW -5 @ 25 feet bgs) in the shallow zone and 4.2 mg/kg VEW -5 @ 45 feet bgs) in the deep zone. DIPE, ETBE, and TAME were not detected in soil samples in the area of the USTs. Northern Dispensers. The second hydrocarbon- impacted soil zone is located in the vicinity of the northern- most dispensers. Soil samples were collected surrounding the dispensers to the north (BB -5 and B13-6), the west (1313-20), the east (1313-10, 1313-19, and P -4), and beneath the dispensers (D -3 and D -4). TPH -d was not detected in any of the soil borings in the area of the northern dispensers. TPH -g was detected only in soil boring BB -10 at a maximum concentration of 0.76 mg/kg (BB -10 @ 25 feet bgs) in the shallow zone and 0.22 mg/kg (BB -l0 @ 45 feet bgs) in the deep zone. BTEX compounds were not detected in any of the soil borings in the area of the northern dispensers. MTBE was detected in all of the soil boring locations in the area of the northern dispensers except B13-5. The maximum concentrations of MTBE detected were 0.69 mg/kg (BB -10 @ 25 feet bgs) in the shallow zone and 1.4 mg/kg (BB -19 @ 45 feet bgs) in the deep zone. TBA was only detected in soil boring BB -19 in this area. The maximum concentrations of TBA detected were 1.5 mg/kg (1313-19 @ 30 feet bgs) in the shallow zone and 0.87 mg/kg (BB -19 @ 40 feet bgs) in the deep zone. DIPE, ETBE, and TAME were not detected in soil samples in the area of the northern dispensers. Southern Dispensers. The third hydrocarbon- impacted soil zone is located in the vicinity of the southern- most dispensers. This area is identified by soil samples collected surrounding the dispensers to the west (BB- 7 and BB -l3), the south (1313-3, 1313-4, 1313-8, BB -14, and VEW -1), the east (P -1), and beneath the dispensers D -1 and D -2). TPH -d was detected in only one sample (D -1 -4) at a concentration of 210 mg/kg in the area of the southern dispensers; however, this area was subsequently over - excavated to non - detect TPH -d concentrations. TPH -g was detected in soil borings D -1, P -1, BB -7, BB -8, B13-14, and VEW -1 at a maximum concentration of 5.8 mg/kg (P -1 -WS @ 20 feet bgs) in the shallow zone. TPH -g was detected at a concentration of 10 mg/kg in soil sample D -1 -4, however this area was subsequently over- excavated to non - detect TPH -g concentrations. TPH -g was detected at a maximum concentration of 1.0 mg/kg (VEW -1 @ 35 and 40 feet bgs) in the deep zone. BTEX compounds were not detected in any of the soil borings in the area of the southern dispensers. MTBE was detected in all of the soil boring locations except 1313-3 and B13-4 in the area of the southern dispensers. The maximum concentrations of MTBE detected were 20 mg/kg (BB -14 @ 25 feet bgs) in the shallow zone and 4.8 mg/kg (VEW -1 @ 40 feet bgs) in the deep zone. TBA was detected in soil borings P -1, BB -13, 1313-14, and VEW -1 in this area. The maximum concentrations of TBA detected were 8.4 mg/kg (VEW -1 @ 25 feet bgs) in the shallow zone and 1.1 mg/kg (BB -14 @ 45 feet bgs) in the deep zone. DIPE, ETBE, and TAME were not detected in soil samples in the area of the northern dispensers. Y:\ Shell SftesV1 050Gostord12008 -05 -22 L-0 Risk Clo Request Mr. Howard Wines III City of Bakersfield Fire Department, Environmental Services May 22, 2008 Page 7 GROUNDWATER DELINEATION Groundwater was not encountered during previous site assessment activities. The maximum depth explored where soil samples were collected was 85 feet bgs, while groundwater is reportedly located at a depth of approximately 160 feet bgs (WGR, 2003). QUARTERLY SOIL VAPOR MONITORING As proposed in DELTA's Corrective Action Plan, dated November 11, 2004, and subsequently approved by the CBFD, DELTA has conducted quarterly sampling and analyzing of soil vapors from the five dual - nested SVE wells (VEW -1A & B through VEW -5A & B) to monitor the progress of natural attenuation. The five SVE wells were initially sampled on a monthly basis, for six months, and on a quarterly basis thereafter. Over the course of soil vapor monitoring (Second Quarter 2005 to present), residual hydrocarbons and fuel oxygenates have been reduced to non - detect above laboratory reporting limits or asymptotic levels. The historical maximum TPH -g concentration detected in soil vapors was 2,200 parts per million (ppm) from VEW -3A during the Third Quarter of 2005. During First Quarter 2008, TPH -g was not detected above laboratory reporting limits in any of the soil vapor samples collected except in VEW -3B (4.8 ppm or 20 micrograms per liter [µg/L]). Benzene was detected at a historical maximum concentration of 0.059 ppm in VEW -3A in Second Quarter 2005; benzene was non - detect in all soil vapor samples collected in the First Quarter 2008. Toluene was detected in all soil vapor samples collected during the First Quarter 2008 at. a maximum concentration of 0.0025 ppm (VEW -1 B and VEW -2A), whereas the maximum historical toluene concentration in soil vapors was 0.19 ppm (VEW -5A, Third Quarter 2007). Ethyl- benzene was detected at a historical maximum concentration of 0.037 ppm in VEW -5B during the Third Quarter 2007; during First Quarter 2008, ethyl benzene was not detected above laboratory reporting limits in any of the soil vapor samples collected. Total xylenes were non- detect in all soil vapor samples collected in the First Quarter of 2008 except in VEW -lA and VEW -2B, where xylenes were detected at 0.0010 ppm. Total xylenes were detected at a historical maximum concentration of 0.228 ppm in VEW -5A in the Third Quarter of 2007. The maximum historical concentration of MTBE detected in soil vapor samples was 99 ppm (360 µg/L) in VEW -3A during Second Quarter 2005; in the First Quarter 2008, MTBE was detected at a maximum concentration of 0.26 ppm (0.94 gg/L) in VEW -3B. TBA, DIPS, ETBE, and TAME concentrations have been non - detect above laboratory reporting limits since the First Quarter of 2006 in all of the soil vapor samples collected. Historical soil vapor monitoring data are presented in Tables 3 through 5. Soil vapor analytical data from First Quarter 2008 are presented in Figure 3. Y:\_SheU Sit sW4050 Codord12008 -05 -22 Low Risk Clo Rcqu Mr. Howard Wines III City ofBakersfield Fire Department, Environmental Services May 22, 2008 Page 8 CONCLUSIONS Based on the above information, DELTA presents the following conclusions: The historical maximum TPH -d concentrations were detected in soil samples collected around the former UST complex (31 mg/kg, P- 2 -10); however, this area was subsequently over - excavated to non - detect TPH -d concentrations. Furthermore, since completion of SB898 UST upgrade activities in 2001, diesel has not been stored at the site, hence eliminating the source of TPH -d. TPH -g was detected at historical maximum concentrations of 15 mg/kg (BB -9 @ 20 feet bgs) in the shallow zone and 12 mg/kg (BB -12 @ 40 feet bgs) in the deep zone. However, according to First Quarter 2008 soil vapor analytical data, TPH -g was non - detect above laboratory reporting limits in wells VEW -5A/5B (adjacent to boring BB -9) and VEW -4A/4B (adjacent to boring BB -12). From soil vapor samples collected in the First Quarter 2008, TPH -g was only detected in well VEW -313 at 4.8 ppm or 20 µg/L. BTEX compounds were detected in soil samples around the former UST complex in soil sample P -2- 10; however, this area was subsequently over - excavated to non- detect concentrations. BTEX compounds were not detected in the remaining soil samples, with the exception of a concentration of 6.6 mg/kg of toluene in soil sample BB -18 at a depth of 65 feet bgs. In the First Quarter 2008, benzene and ethylbenzene were not detected in any soil vapor samples collected; toluene was detected at a maximum concentration of 0.0025 ppm (VEW -113 and VEW -2A); total xylenes were non- detect in all soil vapor samples collected except in VEW -IA and VEW -213, both at 0.0010 ppm. Historically, the maximum MTBE concentrations were found in the soil samples collected in the area of the USTs. The maximum concentrations of MTBE detected were 51 mg/kg (BB -2 @ 20 feet bgs) in the shallow zone and 29 mg/kg (VEW -3 @ 40 feet bgs) in the deep zone. In the First Quarter 2008, MTBE was detected in soil vapor samples at a maximum concentration of 0.26 ppm (0.94 µg/L) in VEW -313. MTBE was not detected above laboratory reporting limits in soil vapor samples collected from VEW -213, 4B, and 5B. Historical maximum TBA concentrations were detected near the former UST complex at 29 mg/kg VEW -5 @ 25 feet bgs) in the shallow zone and 4.2 mg/kg (VEW -5 @ 45 feet bgs) in the deep zone. However, TBA was non - detect above laboratory reporting limits in all of the soil vapor samples collected in the First Quarter 2008. DIPE, ETBE, and TAME have not been detected in any of the historical soil samples collected. DIPE, ETBE, and TAME were also non- detect above laboratory reporting limits in all of the soil vapor samples collected in the First Quarter 2008. Hydrocarbon concentrations in soil vapor since the start of NINA activities during the second quarter of 2005 have reduced asymptotically. In the First Quarter 2008, TPH -g was only detected in one soil vapor sample at 4.8 ppm in well VEW,313. Toluene was detected at a maximum concentration of 0.0025 ppm (VEW -113 and VEW -2A). Xylenes were detected at maximum concentrations of 0.0010 ppm (VEW -IA and VEW -213). MTBE was detected at a maximum concentration of 0.26 ppm (VEW - 313). Benzene, ethyl benzene, TBA, DIPE, ETBE, and TAME were not detected above laboratory reporting limits in any of the soil vapor samples collected during the First Quarter 2008. Y:\_ShcH SitaiS44050 G or&2008 -05 -22_Lo Risk Do Requea Mr. Howard Wines III City of Bakersfield Fire Department, Environmental Services May 22, 2008 Page 9 Hydrocarbon and fuel- oxygenate impacts to onsite soil and soil vapor have been adequately characterized. Hydrocarbon impact to groundwater is unlikely to occur. The maximum depth explored during site assessment activities was 85 feet bgs, at which all constituents analyzed, except MTBE, were not detected above laboratory reporting limits. MTBE was detected in borings BB -13 through BB -20 at 85 feet bgs at a maximum concentration of 0.061 mg/kg (BB -15). Given that approximately 75 feet exists between the maximum soil sample depth and anticipated groundwater depth, the minimal MTBE concentrations detected at the maximum depth explored, and the additional 3,900 -foot distance to the receptor well, it is not likely that groundwater at the receptor well will be impacted. RECOA'IlVIENDATIONS A review of available data indicates limited residual hydrocarbons in soil beneath the site and an asymptotic reduction of hydrocarbons in soil vapor samples. Based on these conclusions, DELTA recommends that no further action be taken and requests low -risk site closure for this site. Y:\_SkU SiteM\4050Gocfordl2008 -05 -22_L. Risk Cl— Request Mr. Howard Wines IQ City of Bakersfield Fire Department, Environmental Services May 22, 2008 Page 10 This report represents DELTA's professional opinions based upon the currently available information and are arrived at in accordance with currently acceptable professional standards. This work plan is based upon a specific scope of work requested by the client. The Contract between DELTA and its client outlines the scope of work, and only those tasks specifically authorized by that contract or outlined in this report were performed. This work plan is intended only for the use of DELTA's Client and anyone else specifically listed on this report. DELTA will not and cannot be liable for unauthorized reliance by any other third party. Other than as contained in this paragraph, DELTA makes no express or implied warranty as to the contents of this document. If you have any questions, please call Mr. Ross Inouye (DELTA) at (626) 256 -6662. Mr. Randy Orlowski, the SHELL Project Manager for the site, can be reached at (949) 360 -1111. Sincerely, Delta Consultants Shelley Zhang Staff Scientist 1 Scott N. Pearson, PG 6931 Unit Manager ASO GFO NO. rAal P. 05131;08 rFGFC.At 4 cc: Mr. Randy Orlowski, Shell Products US Iv:\_snou Sim N44050 G d.rmzare -0s -22_L— wnk Ck— Rq Ross Inouye Project Engineer ATTACI UOENTS: Table 1 — Well and Boring Data Table 2 — Historical Soil Analytical Results Table 3 — Monitored Natural Attenuation Observation Data Table 4 — Soil Vapor Sampling Analytical Data (Hydrocarbons and Fuel Oxygenates) Table 5 — Soil Vapor Sampling Analytical Data (Fixed Gases) Figure 1 — Site Location Map Figure 2 — Site Map with Historical Soil Sampling Locations Figure 3 — Soil Vapor Analytical Results (First Quarter 2008) Appendix A — Confirmation of Verbal Approval: Corrective Action Plan (DELTA, 2005) REFERENCES WGR Southwest, Inc. Site Assessment and Remediation Test Workplan, Texaco Service Station, 4050 Gosford Road, Bakersfield, California. January 28, 2003. H. M TABLES TABLE I WELL AND BORING DATA 4050 Gosford Road Bakersfield, California N..a.m . e. .:.:. : .:..:..........::..T e . .......... x..P.. .... ....... rAr ......:............ 1.e. v:.:...:.:D. stii[ Sam » p WP.. t .. ....: .......... e. .: t r: iatiiret . . . D; in dD s>::.:.:.:.:.< :.:.:.» :..> 9 coininer......................... 1313-1 Boring 1/19/00 40 5 5 -40 1313-2 Boring 1/19/00 40 5 5 -40 1313-3 Boring 1/19/00 20 5 5 -20 1313-4 Boring 1/19/00 20 5 5 -20 1313-5 Boring 1/19/00 20 5 5 -20 1313-6 Boring 1/19/00 20 5 5 -20 1313-7 Boring 6/21/02 60 5 5 -60 Hollow Stein Auger 1313-8 Boring 6/20/02 60 5 5 -60 Hollow Stem Auger 1313-9 Boring 6/20/02 65 5 5 -65 Hollow Stem Auger BB -10 Boring 6/20/02 65 5 5 -65 Hollow Stem Auger 1313-11 Boring 6/20/02 60 5 5 -60 Hollow Stem Auger BB -12 Boring 6/20/02 60 5 5 -60 Hollow Stem Auger BB -13 Boring 5/6/03 85 5 5 -85 Hollow Stem Auger BB -14 Boring 5/7/03 85 5 5 -85 Hollow Stem Auger BB -15 Boring 5/7/03 85 5 5 -85 Hollow Stem Auger BB -16 Boring 5/7/03 85 5 5 -85 Hollow Stem Auger BB -17 Boring 5/8/03 85 5 5 -85 Hollow Stem Auger BB -18 Boring 5/8/03 85 5 5 -85 Hollow Stem Auger BB -19 Boring 5/6/03 85 5 5 -85 Hollow Stem Auger BB -20 Boring 5/6/03 85 5 5 -85 Hollow Stem Auger VEW -IA Vapor Extraction Well 9/25/03 55 5 5 -55 2 10 30 Hollow Stem Auger VEW -1 B Vapor Extraction Well 9/25/03 55 5 5 -55 2 40 55 Hollow Stem Auger VEW -2A Vapor Extraction Well 9/24/03 60 5 5 -60 2 5 30 Hollow Stem Auger VEW -213 Vapor Extraction Well 9/24/03 60 5 5 -60 2 40 60 Hollow Stem Auger VEW -3A Vapor Extraction Well 9/24/03 50 5 5 -50 2 5 25 Hollow Stem Auger VEW -313 Vapor Extraction Well 9/24/03 50 5 5 -50 2 35 50 Hollow Stem Auger VEW -4A Vapor Extraction Well 9/23/03 65 5 5 -65 2 10 30 Hollow Stem Auger VEW413 Vapor Extraction Well 9/23/03 65 5 5 -65 2 40 65 Hollow Stem Auger VEW -5A Vapor Extraction Well 9/23/03 65 5 5 -65 2 5 30 Hollow Stem Auger VEW -513 Vapor Extraction Well 9/23/03 65 5 5 -65 2 40 65 Hollow Stem Auger Notes: AMSL = Above mean sea level Not applicable Data prior to September 2003 supplied by WGR Southwest, Inc. Page I of I TABLE2 HISTORICAL SOIL ANALYTICAL RESULTS 4050 Gosford Road Bakersfield, California TPH-D TOT-AL: BENZENE T.(Y.LUENE-: E.THYL. TOTAL: MTHE. W.BE TBA DIPE: ETBE- TAME: Ethfirial BB-1 1/19/00 5 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 1.9 NA NA NA NA NA NA 10 ND(<I.0) 5.60 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 2.3 NA NA NA NA NA NA 15 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 7.8 8.1 NA NA NA NA NA 20 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 1.7 NA NA NA NA NA NA 25 ND(<I.0) ND(<5.0) NA ND(<0.0050 ) ND(<0.0050) ND(<0.0050) ND(<0.015) 0.36 NA NA NA NA NA NA 35 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 0.28 NA NA NA NA NA NA 40 ND <I.0 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 2.8 NA NA NA NA NA NA BB-2 1/19/00 5 ND(<i.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 0.76 NA NA. NA NA NA NA 10 ND(<].0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 19 NA NA NA NA NA NA 15 ND(<i.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 42 NA NA NA NA NA NA 20 ND(<I.0) ND( <5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 51 27 NA NA NA NA NA 25 ND(<I.0) 11 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 6.7 NA NA NA NA NA NA 30 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 0.15 NA NA NA NA NA NA 35 ND(<I.0) 7 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 10 NA NA NA NA NA NA 40 ND <1.0 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) 0.14 NA NA NA NA NA NA BB-3 1/19/00 5 ND(<].0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 10 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 15 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 20 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<O.O 15) ND <0.035 NA NA NA NA NA NA BB-4 1/19/00 5 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 10 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 15 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 20 ND <I.0 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA BB-5 1/19/00 5 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 10 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 15 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 20 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(< .015) ND <0.035 NA NA NA NA NA NA BB-6 1/19/00 5 ND(<I.0) ND(<5.0) NA ND(<0.0050) rFD(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 10 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 15 ND(<I.0) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.015) ND(<0.035) NA NA NA NA NA NA 20 ND <1.0 ND(<5.0) NA ND <0.0050 ND(<0.0050) ND(<0.0050) Np(<0.015) 0.039 0.039 NA NA NA NA NA Dispenser Samples D -1-4 7/5/01 10.00 210 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.017 ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA D-1-8 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA D-2-4 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA D-2-8 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA D-3-4 7/5/01 ND(<0.5) ND(<5.0) NA NE>(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.29 ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA D-3-8 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<O.O10) NA 0.041 ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA D4-4 7/5/01 ND(<0.5) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.028 ND(<0.25) ND(<0.010) ND(<0.010) ND(<0.010) NA D4-8 7/5/01 ND <0.5 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.25) ND(<0.25) ND(<0.010) ND(<0.010) ND(<O.O 10) NA Table 2 Ifistorical Soil Analytical Results (4050) Page I of 10 TABLE 2 HISTORICAL SOIL ANALYTICAL RESULTS 4050 Gosford Road Bakersfield, California SP- I -A 7/17/01 H ::::: D i::> : TImOT' AL BENZENEZ: E: N: E T< O: U: E: N: E:::: E YL : TOTANL: BE : JW.BE : B.A DI.P. E : EmTB.. E TAMEM.. E 6.j.io. 7 utllie : i.:::::< : i•::D:e:t:4 : :: .i:.:.:::: ro::' TP :H :-:' IT. H. T Eth.. NA Dam' 7/17/01 ND( <0.5) roL: ' m ' NA NA NA Piping Samples 7/17/01 ND( <0.5) NA NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) NA NA NA NA NA NA NA P -1-4 7/5/01 ND( <0.5) ND( <5.0) NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) NA 0.96 0.94 ND( <0.010) ND( <0.010) ND( <0.010) NA P -1 -8 7/5/01 0.78 ND( <5,0) NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) NA 2.4 6.5 ND( <0.010) ND( <0.010) ND( <0.010) NA P -1 -10 7/5/01 2.8 ND( <5,0) NA ND( <0.0050) ND(<0.0050) ND( <0.0050) ND( <0.010) NA ND( <0.0050) 1.9 ND( <0.010) ND(<0.010) ND(<0.010) NA P -1 -12 7/5/01 1.10 ND( <5.0) NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) NA 13 2.1 ND(<0.010) ND( <0.010) ND( <0.010) NA P -1 -14 7/5/01 ND(<0.5) ND( <5,0) NA ND(<0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) NA 2.7 1.3 ND( <0.010) ND( <0.010) ND( <0.010) NA P -2-4 7/5/01 ND( <0.5) ND( <5,0) NA ND(<0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.2 3.8 ND(<0.010) ND( <0.010) ND( <0.010) NA P -2 -8 7/5/01 4.3 ND( <5,0) NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 8.2 ND( <6.3)' ND(<0.010) ND( <0.010) ND( <0.010) NA P -2 -10 7/5/01 2.6 31 NA ND( <0.0050) 0.055 0.024 0.223 NA 2.7 4.5 ND(<0.010) ND( <0.010) ND( <0.010) NA P -3-4 7/5/01 ND( <0.5) ND( <5.0) NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) NA 0.02 ND( <0.25) ND(<0.010) ND( <0.010) ND(<0.010) NA P -3 -8 7/5/01 ND(<0.5) ND(<5.0) NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.017 ND(<0.25) ND( <0.010) ND( <0.010) ND( <0.010) NA P4-4 7/5/01 ND( <0.5) ND( <5,0) NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0,012 ND(<0.25) ND(<0.010) ND( <0.010) ND( <0.010) NA P4-8 7/5/01 ND(<0.5) 5,0 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.011 ND(<0.25) ND(<0.010) ND <0.010 ND(<0.010) NA Over - Excavation Samples D -1 -10 7/17/01 ND( <0.5) ND( <5,0) NA ND( <0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) ND( <0.025) NA NA NA NA NA NA D- 1 -NS10 7/17/01 ND( <0.5) ND( <5,0) NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) 0.026 0.014 NA NA NA NA NA D- I -WS10 7/17/01 ND( <0.5) ND( <5,0) NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) 0.042 0.0088 NA NA NA NA NA P -1 -20 7/17/01 3.5 ND(<5.0) NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) 4.4 6.1 NA NA NA NA NA P- 1 -WS20 7/17/01 5.8 ND( <5,0) NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) 6.5 9.9 NA NA NA NA NA P- 1 -ES18 7/17/01 3.8 ND( <5,0) NA ND(<0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) 5.3 8.3 NA NA NA NA NA P -2 -20 7/17/01 4.3 ND( <5.0) NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) 6.3 10 NA NA NA NA NA SP- I -A 7/17/01 ND( <0.5) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA NA NA NA NA NA NA SP -1 -B 7/17/01 15 NA NA ND( <0.0050) 0.23 0.15 1.4 NA NA NA NA NA NA NA SP -2 -A 7/17/01 ND( <0.5) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA NA NA NA NA NA NA SP -2 -B 7/17/01 ND( <0.5) NA NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <0.010) NA NA NA NA NA NA NA SP -3 -A 7/17/01 ND(<0.5) NA NA ND( <0.0050) ND(<0.0050) ND( <0.0050) ND(<0.010) NA NA NA NA NA NA NA SP -3 -B 7/18/01 ND( <0.5) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA NA NA NA NA NA NA SP -1,2AC 7/17/01 NA NA ND(<0.5) NA NA NA NA NA NA NA NA NA NA NA SP -28,30 7/17/01 NA NA ND( <0.5) NA NA NA NA NA NA NA NA NA NA NA SP4-A 7/17/01 3.3 NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) 0.033 NA NA NA NA NA NA NA SP4-B 7/17/01 1.9 NA NA ND( <0.0050) 0.0091 ND( <0.0050) 0.036 NA NA NA NA NA NA NA SP4-C 7/17/01 1.5 NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA NA NA NA NA NA NA SP4 -D 7/17/01 2 NA NA ND( <0. 0050) ND( <0.0050) ND(<0.0050) ND(<0.010) NA NA NA NA NA NA NA SP-4- A B C DO 7/17/01 NA NA 2.39 NA NA NA NA NA NA NA NA NA NA NA Table 2 Historical Soil Analytical Results (4050) Page 2 of 10 TABLE2 HISTORICAL SOIL ANALYTICAL RESULTS 4050 Gosford Road Bakersfield, California Table 2 Historical Soil Analytical Results (4050) Page 3 of 10 TPH-D TOTAL-:-::: BENZENE TOLUENE-:-:-:-: ETHYL, BB-7 6/21/02 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.016 NP NP NP NP NA 10 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.006 NP NP NP NP NA 15 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 20 ND(<0,05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 25 0.077 ND(<2) NA ND(<0.0050) Nr)(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.037 NP NP NP NP NA 30 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.026 NP NP NP NP NA 35 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 40 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.083 NP NP NP NP NA 45 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.006 NP NP NP NP NA 50 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.011 NP NP NP NP NA 55 ND(<0.05) ND(<2) NA ND(<0.0050) Nr)(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 60 0.068 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.012 NP NP NP NP NA BB-8 6120/02 5 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.008 NP NP NP NP NA 10 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.005 NP NP NP NP NA 15 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 20 2.000 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 1.300 NP NP NP NP NA 25 2.300 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 1.500 NP NP NP NP NA 30 0.540 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.110 NP NP NP NP NA 35 0.250 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.240 NP NP NP NP NA 40 0.330 ND( <2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.170 NP NP NP NP NA 45 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.017 NP NP NP NP NA 50 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.012 NP NP NP NP NA 55 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 60 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA BB-9 6/20/02 5 0.310 2.100 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.023 NP NP NP NP NA 10 8.500 ND(<2) NA ND(<0.0250) ND(<0.0250) ND(<0.0250) ND(<0.0250) NA 7.300 NP NP NP NP NA 15 5.600 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 11.000 NP NP NP NP NA 20 15.000 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 16.000 NP NP NP NP NA 25 0.890 4.600 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.730 NP NP NP NP NA 30 0.330 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.099 NP NP NP NP NA 35 0.360 2.000 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.015 NP NP NP NP NA 40 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 45 0.660 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 1.400 NP NP NP NP NA 50 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.045 NP NP NP NP NA 55 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.046 NP NP NP NP NA 60 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.005 NP NP NP NP NA 65 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.053 NP NP NP NP NA Table 2 Historical Soil Analytical Results (4050) Page 3 of 10 TABLE2 HISTORICAL SOIL ANALYTICAL RESULTS 4050 Gosford Road Bakersfield, California Table 2 l4istorical Soil Analytical Results (4050) Page 4 of 10 TOTAL: NZE-NE PtUENE:::::::::::E-.T iy-.L i. BB-10 6/20/02 5 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.060 NP NP NP NP NA 10 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.058 NP NP NP NP NA 15 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.020 NP NP NP NP NA 20 0.086 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.008 NP NP NP NP NA 25 0.760 ND(<2) NA Np(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.690 NP NP NP NP NA 30 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.030 NP NP NP NP NA 35 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.039 NP NP NP NP NA 40 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.010 NP NP NP NP NA 45 0.220 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.410 NP NP NP NP NA 50 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.023 NP NP NP NP NA 55 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.008 NP NP NP NP NA 60 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.040 NP NP NP NP NA 65 0.056 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) Np(<0.0050) NA 0.070 NP NP NP NP NA BB-11 6/20/02 5 0.400 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 1.000 NP NP NP NP NA 10 1.700 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 3.000 NP NP NP NP NA 15 9.500 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 5.200 NP NP NP NP NA 20 5.100 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 11.000 NP NP NP NP NA 25 3.300 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.650 NP NP NP NP NA 30 1.400 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.140 NP NP NP NP NA 35 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.008 NP NP NP NP NA 40 0.180 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.011 NP NP NP NP NA 45 0.130 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.010 NP NP NP NP NA 50 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.020 NP NP NP NP NA 55 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.023 NP NP NP NP NA 60 0.180 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA BB-12 6/20/02 5 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 10 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.010 NP NP NP NP NA 15 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.022 NP NP NP NP NA 20 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA ND(<0.0050) NP NP NP NP NA 25 2.900 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.510 10 NP NP NP NA 30 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.006 NP NP NP NP NA 35 0.240 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.032 NP NP NP NP NA 40 12.000 ND(<2) NA. ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 1.300 NP NP NP NP NA 45 0.860 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.850 NP NP NP NP NA 50 0.150 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.300 NP NP NP NP NA 55 ND(<0.05) ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.033 NP NP NP up NA 60 0.081 ND(<2) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.0050) NA 0.120 NP NP NP NP NA Table 2 l4istorical Soil Analytical Results (4050) Page 4 of 10 TABLE HISTORICAL SOIL ANALYTICAL RESULTS 4050 Gosford Road Bakersfield, California Table 2 Moorical Soil Analytical Results (4050) Page 5 of 10 T-PH-D:::::::::::: TOT-AL:::::::: BENZENE::::: TOLUENE: ETHY.L TOTAL Nff.BE 1, N 4j. 45Q . . . BB-13 5/6/03 5 ND(<0.50) NA. NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0,0050) ND(<0.010) ND(<O.OiO) ND(<O.O10) ND(<0.250) 10 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.012 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 15 ND(<0.50) NA NA ND(<0.0050) ND(<0,0050) ND(<0.0050) ND(<0.010) NA 0.0075 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 20 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<O.O10) NA 0.016 ND(<0.0050) ND(<0.010) ND(<O.O10) ND(<0.010) ND(<0.250) 25 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.009 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 30 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 35 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 40 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.046 0.250 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 45 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.027 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 50 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.0073 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<O.O 10) ND(<0.250) 55 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.0053 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<O.O 10) ND(<0.250) 60 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<O.OiO) NA 0.0051 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 65 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<O.O10) ND(<0.010) ND(<0.010) ND(<0.250) 70 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.005 ND(<0.0050) ND(<O.O10) ND(<0.010) ND(<0.010) ND(<0.250) 75 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<O.O10) ND(<0.010) ND(<0.010) ND(<0.250) 80 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<O.O10) NA 0.067 ND(<0.0050) ND(<O.O10) ND(<0.010) ND(<0.010) ND(<0.250) 85 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) O.010 NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) BB-14 5/7/03 5 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<O.O 10) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<O.O10) ND(<0.010) ND(<0.250) 10 0.50 NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<O.O 10) NA 1.400 0.130 ND(<O.O 10) ND(<O.O10) ND(<0.010) ND(<0.250) 15 ND(<0.50) NA NA ND(<0.130) ND(<0A30) ND(<0.130) ND(<0.260) NA 4.000 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 20 ND(<0.50) NA NA ND(<0.130) ND(<O. 130) ND(<0.130) ND(<0.260) NA 4.300 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 25 2.6 NA NA ND(<0.130) ND(<0.130) ND(<O.130) ND(<0.260) NA 20.000- 3.600 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 30 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.160 0.290 ND(<0.010) ND(<O.O10) ND(<0.010) Nl-)(<0.250) 35 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.028 0.067 ND(<O.O 10) ND(<O.O10) ND(<0.010) ND(<0.250) 40 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.450 0.650 ND(<O.O 10) ND(<O.O10) ND(<0.010) ND(<0.250) 45 0.61 NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 1.700 1.100 ND(<O.O 10) ND(<O.O10) ND(<0.010) ND(<0.250) 50 ND(<0.50) NA NA Nb(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.670 0.120 ND(<0.010) ND(<O.O10) ND(<0.010) ND(<0.250) 55 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.012 0.400 4D(<O.0 10) ND(<O.O10) ND(<0.010) ND(<0.250) 60 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<O.O10) ND(<0.010) ND(<0.250) 65 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<O.O10) ND(<0.010) ND(<0.250) 70 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<O.O 10) ND(<O.O 10) ND(<0.010) ND(<0.250) 75 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<O.O10) ND(<0.010) ND(<0.250) 80 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 85 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.0078 ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) Table 2 Moorical Soil Analytical Results (4050) Page 5 of 10 TABLE2 HISTORICAL SOIL ANALYTICAL RESULTS 4050 Gosford Road Bakersfield, California table 2 Historical Soil Analytical Results (4050) Page 6 of 10 DENZE-NE ETHYL-: -:-:-:-:-:TOTAL:- A1THE-:-:: DIPE:- :-:-:-:-:-:-ETBU- TAAW EtUdCk1 i. amp e 02 BB-15 5/7/03 5 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.440 0.740 ND( <0.010) ND(<0.010) ND(<0.010) ND(<0.250) 10 1.5 NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 4.400 7.000 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 115 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 3.300 1.900 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 20 ND(<0.50) NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 6.400 2.700 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 25 ND(<0.50) NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 39.000 4.800 ND(<0.250) ND(<0.250) ND(<0.250) 12.000 30 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.460 0.650 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 35 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.140 0.210 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 40 ND(<0.50) NA NA ND( <0.130) ND( <0.130) ND(<0.130) ND(<0.260) NA 0.870 2.200 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 45 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.063 1.000 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 50 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.460 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 55 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.051 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 60 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.028 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 65 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.026 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 70 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.011 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 75 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.007 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 80 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0,011 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 85 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.061 ND(<0.050) ND(<O.O10) ND(<0.010) ND(<0.010) ND(<0.250) BB-16 5/7/03 5 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.0056 0.150 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.010) 10 ND(<0.50) NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 10.000 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 15 ND(<0.50) NA NA ND(<0.130) ND( <0.130) ND(<0.130) ND(<0.260) NA 16.000 2.300 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 20 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 8.700 13.000 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.010) 25 ND(<0.50) NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 40.000 6.400 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 30 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.420 1.700 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 35 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.260 1.600 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 40 ND(<0.50) NA NA ND( <0.130) ND( <0.130) ND(<0.130) ND(<0.260) NA 23.000 1.400 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 45 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.450 0.180 ND(<0.010) ND(<0.010) ND( <0.010) ND(<0.250) 50 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.026 ND(<0.050) ND(<0.010) ND(<0.010) ND( <0.010) ND(<0.250) 55 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 60 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 65 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 70 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND( <0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND( <0.010) ND(<0.010) ND(<0.250) 75 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 80 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 85 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.018 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) table 2 Historical Soil Analytical Results (4050) Page 6 of 10 TABLE2 HISTORICAL SOIL ANALYTICAL RESULTS 4050 Gosford Road Bakersfield, California Table 2 Fbstorical Soil knalylical Results (4050) Page 7 of 10 T-PH-D:::::::::::: TOTA BENZENE TOLUENE - ETHYL- TOTAL MTBE: JWrBE: TBA DIPE: ETBE-: TAME: Ethfincd I ................. hip& I ........ Th BB-17 5/8/03 5 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 10 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.270 0.370 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 15 0.88 NA NA ND(<0.130) ND( <0.130) ND( <0.130) ND(<0.260) NA 1.800 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 20 ND(<0.50) NA NA ND(<0.130) ND( <0.130) ND( <0.130) ND(<0.260) NA 1.700 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 25 2.4 NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND( <0.010) NA 6.700 4.400 ND(<0.010) ND(<0,010) ND(<0.010) ND(<0.250) 30 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.800 1.200 ND(<0.010) ND(<0.010) ND( <0.010) ND(<0.250) 35 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.350 0.470 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 40 5.2 NA NA ND(<0.250) ND(<0.250) ND(<0.250) ND(<0.500) NA 23.000 ND(<2.500) ND(<0.500) ND(<0.500) ND(<0.500) ND(<13.000) 45 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.660 0.130 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 50 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.900 0.077 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 55 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.220 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 60 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.013 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 65 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.020 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 70 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.011 ND(<0.050) ND( <0.010) ND(<0.010) ND(<0.010) ND(<0.250) 75 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.021 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 80 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.023 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 85 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.011 ND <0.050 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) BB-18 5/8/03 5 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.820 1.600 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.010) 10 3.6 NA NA ND(<0.250) ND(<0.250) ND(<0.250) ND(<0.500) NA 42.000 16.000 ND(<0.500) ND(<0.500) ND(<0.500) ND(<13.000) 15 1.3 NA NA ND(<0.250) ND(<0.250) ND(<0.250) ND(<0.500) NA 47.000 12.000 ND(<0.500) ND(<0.500) ND(<0.500) ND(<13.000) 20 0.63 NA NA ND(<0.250) ND(<0.250) ND(<0.250) ND(<0.500) NA 18.000 4.900 ND(<0.500) ND(<0.500) ND(<0.500) ND(<13.000) 25 0.73 NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 14.000 5.600 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 30 ND(<0.50) NA NA ND(<0.130) ND(<0.130) ND( <0.130) ND(<0.260) NA 5.600 3.600 ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 35 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.590 0.590 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 40 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.260) NA 2.300 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 45 ND(<0.50) NA NA ND(<0M50) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.180 1.900 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 50 1.1 NA NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 3.700 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) ND(<6.300) 55 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.030 0.097 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 60 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.0054 0.100 ND( <0.010) ND(<0.010) ND(<0.010) ND(<0.250) 65 ND(<0.50) NA NA ND(<0.0050) 6.6 ND(<0.0050) ND(<0.010) NA 0.540 0.340 ND( <0.010) ND(<0.010) ND(<0.010) ND(<0.250) 70 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND( <0.010) NA 0.005 ND(<0.050) ND( <0.010) ND(<0.010) ND(<0.010) ND(<0.250) 75 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND( <0.010) NA 0.012 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 80 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.009 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) 85 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.0095 ND <0.050 ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) Table 2 Fbstorical Soil knalylical Results (4050) Page 7 of 10 TABLE2 IiISTORICAL SOIL ANALYTICAL RESULTS 4050 Gosford Road Bakersfield, California Table 2 Historical Soil Analytical Resolts (4050) Page 8 of 10 T.P.H:G:::< TPH•Il :::::<T03AIi BENZEiVE TOLUENE-:-:: iETHYL::':< MTBE ::::::Nff..BE:: TBA :::::::DIPE::::« ETBE :::::::TAME:::::::: Ethpdol:: : Samp e ........... I £AD.:::::: Nx . fs.... XYi N or 8240........ 8.... GO.::::.:.8 60::::::: 8160 ........ alZ6(.:.: ' BB -19 5/6/03 5 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND( <0.0050) ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 10 ND(<0.50) NA NA ND(<0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.0084 ND( <0.050) ND( <0.010) ND( <0.010) ND(<0.010) ND( <0.250) 15 ND(<0.50) NA NA ND( <0.0050) ND( <0.0050) ND(<0.0050) ND( <O.010) NA ND( <0.0050) ND( <0.050) ND( <0.010) ND( <0.010) ND(<0.010) ND(<0.250) 20 ND( <0.50) NA NA ND(<0.0050) ND(<0.0050) ND( <0.0050) ND( <0.010) NA ND( <0.0050) ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 25 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.270 ND(<0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 30 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.250 1.500 ND(<O.010) ND(<0.010) ND( <0.010) ND(<0.250) 35 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND( <0.0050) 0.490 ND( <0.010) ND( <0.010) ND(<0.010) ND( <0.250) 40 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.200 0.870 ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 45 ND( <0.50) NA NA ND(<O.130) ND( <O.I30) ND( <0.130) ND( <0.260) NA 1.400 ND( <1.300) ND( <0.250) ND( <0.250) ND( <0.250) ND( <3.600) 50 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <O.010) NA 0.010 ND( <0. 050) ND( <0.010) ND( <0.010) ND( <0.010) ND(<0.250) 55 ND(<0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.005 0.061 ND(<0.010) ND( <0.010) ND( <0.010) ND(<0.250) 60 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.0053 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND(<0.250) 65 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.0092 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND(<0.250) 70 ND( <0.50) NA NA ND( <0.0050) ND(<0.0050) ND( <0.0050) ND( <0.010) NA 0.0065 ND( <0.050) ND( <0.010) ND(<0.010) ND( <0.010) ND( <0.250) 75 ND( <0.50) NA NA ND( <0.0050) ND(<0.0050) ND( <0.0050) ND( <0.010) NA 0.0051 ND( <0.050) ND(<0.010) ND(<0.010) ND( <0.010) ND( <0.250) 80 ND( <0.50) NA NA ND(<0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.0053 ND( <0.050) ND( <0.010) ND(<0.010) ND( <0.010) ND( <0.250) 85 ND(<0.50) NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.0083 ND(<0.050) 0.010 ND(<0.010) ND(<0.010) ND(<0.250) BB-20 5/6/03 5 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND( <0.0050) ND( <0.050) ND( <0.010) ND( <O.010) ND( <0.010) ND( <0.250) 10 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.012 ND( <0.050) ND( <O.010) ND( <0.0I0) ND( <0.010) ND( <0.250) 15 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.0073 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 20 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND( <0.0050) ND( <0.050) ND( <O.010) ND( <0.0I0) ND( <0.010) ND( <0.250) 25 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND(<0.010) NA 0.015 ND(<0.050) ND( <0.010) ND( <0.010) ND( <O.010) ND( <0.250) 30 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND(<0.0050) ND(<0.050) ND( <0.010) ND( <0.010) ND( <O.010) ND( <0.250) 35 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND(<0.0050) ND( <0.050) ND( <0.010) ND(<0.010) ND( <0.010) ND( <0.250) 40 ND(<0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND(<0.0050) ND(<0.050) ND( <0.010) ND( <0.010) ND( <O.010) ND( <0.250) 45 ND(<0.50) NA NA ND(<0.0050) ND( <0.0050) ND( <0.0050) ND(<O.010) NA 0.061 ND(<0.050) ND(<0.010) ND( <0.010) ND( <0.010) ND(<0.250) 50 ND( <0.50) NA NA ND( <0.0050) ND(<0.0050) ND(<0.0050) ND( <O.010) NA 0.0059 ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 55 ND(<0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND(<0.0050) ND( <0.050) ND( <0.010) ND( <0.010) ND( <0.010) ND( <0.250) 60 ND(<0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.0I0) NA ND(<0.0050) ND( <0.050) ND( <0.010) ND( <O.010) ND( <0.010) ND( <0.250) 65 ND(<0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND( <0.0050) ND( <0.050) ND( <0.010) ND( <O.010) ND(<0.010) ND(<0.250) 70 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <O.010) NA 0.0068 ND( <0.050) ND( <O.010) ND( <0.010) ND( <0.010) ND( <0.250) 75 ND( <0.50) NA NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA 0.0057 ND( <0.050) ND( <O.010) ND( <0.010) ND( <0.010) ND( <0.250) 80 ND( <0.50) NA NA ND( <0.0050) ND(<0.0050) ND( <0.0050) ND( <0.010) NA ND(<0.0050) ND(<0.050) ND( <0.010) ND( <0.010) ND( <0.010) 0.270 85 0.50 NA NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.010 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) ND(<0.250) VEW -1 9/25/03 5 ND( <0.50) ND( <5.0) NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0.010) NA ND( <0.0050) ND( <0.050) ND( <0.010) ND(<0.010) ND(<0.010) NA 10 ND( <0.50) ND( <5.0) NA ND(<0.0050) ND( <0.0050) ND( <0.0050) ND(<0,010) NA 0.006 ND(<0.050) ND(<0.010) ND( <0.010) ND( <0.010) NA 15 1.0 ND( <5.0) NA ND( <0.130) ND( <0.130) ND( <O.130) ND(<0.260) NA 2.500 ND( <1.300) ND( <0.250) ND( <0.250) ND( <0.250) NA 20 1.5 ND( <5.0) NA ND( <O.130) ND( <O.130) ND( <0.130) ND( <0.260) NA 3.500 ND( <1.300) ND( <0.250) ND( <0.250) ND( <0.250) NA 25 3.6 ND( <5.0) NA ND( <0.130) ND(<O.130) ND( <0.130) ND( <0,260) NA 11.000 8.400 ND( <0.250) ND( <0.250) ND( <0.250) NA 30 1.1 ND(<5.0) NA ND(<O.130) ND( <0.130) ND( <O.130) ND( <0,260) NA 2.800 ND( <1.300) ND( <0.250) ND( <0.250) ND( <0.250) NA 35 1.0 ND(<5.0) NA ND(<0.130) ND( <0.130) ND( <0.130) ND( <0,260) NA 2.100 ND( <1.300) ND( <0.250) ND( <0.250) ND( <0.250) NA 40 1.0 ND( <5.0) NA ND( <0.130) ND( <0.130) ND( <0.130) ND( <0,260) NA 4.800 ND( <1.300) ND(<0.250) ND( <0.250) ND( <0.250) NA 45 ND(<0.50) ND( <5.0) NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0,010) NA 0.250 0.480 ND( <0.010) ND( <0.010) ND(<0.010) NA 50 ND( <0.50) ND( <5.0) NA ND( <0.0050) ND( <0.0050) ND( <0.0050) ND( <0,010) NA 0.087 ND( <0.050) ND( <0.010) ND( <0.010) ND(<0.010) NA 55 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND <0,010 NA 0.0050 0.210 ND(<0.010) ND(<0.010) ND(<0.010) NA Table 2 Historical Soil Analytical Resolts (4050) Page 8 of 10 TABLE HISTORICAL SOIL ANALYTICAL RESULTS 4050 Gosford Road Bakersfield, California Table 2 t1istoricid Soil Analytical Results (4050) Pap 9 of 10 TPH-D::::::::: TOTAL::::::: BE.N.Z.E..N.E. :::::::: T..Q. LU..E.N.E. :::::::::::E]kYL TO.T VEW-2 9/24/03 5 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.063 0.560 ND(<0.010) ND(<0.010) ND(<0.010) NA 10 4.30 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 18.000 4.500 ND(<0.010) ND(<0.010) ND(<0.010) NA 15 6.00 ND(<5.0) NA ND( <0.130) ND( <0.130) ND(<0.130) ND(<0.260) NA 12.000 2.200 ND(<0.250) ND(<0.250) ND(<0.250) NA 20 1.60 ND( <5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 6.500 3.500 ND(<0.010) ND(<0.010) ND(<O.OiO) NA 25 7.60 ND(<5.0) NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 44.000 4.800 ND(<0.250) ND(<0.250) ND(<0.250) NA 30 0.62 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 1.800 1.200 ND(<0.010) ND(<0.010) ND(<0.010) NA 35 0.66 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 1.200 0.940 ND(<0.010) ND(<0.010) ND(<0.010) NA 40 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.410 0.570 ND(<0.010) ND(<0.010) ND(<0.010) NA 45 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.330 0.530 ND(<0.010) ND(<0.010) ND(<0.010) NA 50 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.960 0.077 ND(<0.010) ND(<0.010) ND(<0.010) NA 55 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.006 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA 60 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA VEW-3 9/24/03 5 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA 10 1.9 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 6.800 0.150 ND(<0.010) ND(<0.010) ND(<0.010) NA 15 5.7 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 19.000 4.100 ND( <0.010) ND(<0.010) ND(<0.010) NA 20 6.2 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 14.000 4.400 ND(<0.010) ND(<0.010) ND(<0.010) NA 25 9.6 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 24.000 11.000 ND(<0.010) ND(<0.010) ND(<0.010) NA 30 1.1 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 2.500 4.200 ND(<0.010) ND(<0.010) ND(<0.010) NA 35 6.7 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.810 1.800 ND(<0.010) ND(<0.010) ND(<0.010) NA 40 4.9 ND(<5.0) NA ND(<0.0050) ND(<0M50) ND(<0.0050) ND(<0.010) NA 29.000 2.100 ND(<0.010) ND(<0.010) ND(<0.010) NA 45 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.350 0.350 ND( <0.010) ND(<0.010) ND(<0.010) NA 50 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.020 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA VEW4 9123/03 5 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA ND(<0.0050) ND(<0.0050) ND(<0.010) ND(<0.010) ND(<0.010) NA 10 1.2 ND(<5.0) NA ND(<0.130) ND(<0.130) ND( <0.130) ND(<0.260) NA 3.500 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) NA 15 1.3 ND(<5.0) NA ND(<0.130) ND(<0.130) ND( <0.130) ND(<0.260) NA 20.000 2.100 ND(<0.250) ND(<0.250) ND(<0.250) NA 20 1.5 ND(<5.0) NA ND(<0,0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 1.400 3.800 ND(<0.010) ND( <0.010) ND(<0.010) NA 25 7.4 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 3.500 2.100 ND(<0.010) ND(<0.010) ND( <0.010) NA 30 1.1 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND( <0.010) NA 22.000 2.700 ND(<0.010) ND(<0.010) ND(<0.010) NA 35 0.8 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.610 1.500 ND(<0.010) ND(<0.010) ND( <0.010) NA 40 7.4 ND(<5.0) NA ND( <0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 1.600 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) NA 45 3.70 ND(<5.0) NA ND( <0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 17.000 ND(<1.300) ND(<0.250) ND(<0.250) ND(<0.250) NA 50 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.650 0.120 ND(<0.010) ND(<0.010) ND(<0.010) NA 55 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.016 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA 60 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.023 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA 65 ND <0.50 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.005 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA Table 2 t1istoricid Soil Analytical Results (4050) Pap 9 of 10 TABLE HISTORICAL SOIL ANALYTICAL RESULTS 4050 Gosford Road Bakersfield, California TPH,D DEN EN VEW-5 9/23/03 5 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.140 4.000 ND(<0.010) ND(<0.010) ND(<0.010) NA 10 6.3 ND(<5.0) NA ND(<0.130) ND(<0.130) ND(<0.0050) ND(<0.260) NA 2.400 8.500 ND(<0.250) ND(<0.250) ND(<0.250) NA 15 8.7 ND(<5.0) NA ND(<O. 130) ND(<0.130) ND(<O. 130) ND(<0.260) NA 29.000 21.000 ND(<0.250) ND(<0.250) ND(<0.250) NA 20 13 ND(<5.0) NA ND(<0.130) ND(<0.130) ND(<O. 130) ND(<0.260) NA 46.000 15.000 ND(<0.250) ND(<0.250) ND(<0.250) NA 25 28 ND(<5.0) NA ND(<O. 130) ND(<0.130) ND(<0.130) ND(<0.260) NA 85.000 29.000 ND(<0.250) ND(<0.250) ND(<0.250) NA 30 1.5 ND(<5.0) NA ND(<O. 130) ND(<0.130) ND(<O. 130) ND(<0.260) NA 3.100 3.200 ND(<0.250) ND(<0.250) ND(<0.250) NA 35 1.9 ND(<5.0) NA ND(<0.130) ND(<0.130) ND(<0.130) ND(<0.260) NA 5.300 1.800 ND(<0.250) ND(<0.250) ND(<0.250) NA 40 0.94 ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<0.010) NA 0.680 2.400 ND(<O.OiO) ND(<0.010) ND( <0.010) NA 45 2.0 ND(<S.0) NA ND(<O. 130) ND(<0.130) ND(<0.130) ND(<0.260) NA 4.400 4.200 ND(<0.250) ND(<0.250) ND(<0.250) NA 50 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0M50) ND(<0.0050) ND(<0.010) NA 0.530 ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA 55 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<O.O 10) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<O.O 10) ND(<O.O10) NA 60 ND(<0.50) ND(<5.0) NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<O.O 10) NA ND(<0.0050) ND(<0.050) ND(<0.010) ND(<0.010) ND(<0.010) NA 65 ND(<0.50) ND <5.0 NA ND(<0.0050) ND(<0.0050) ND(<0.0050) ND(<O.010 NA ND(<0.0050) ND <0.050 ND(<0.010) ND(<0.010) ND(<O.010 NA Notes: ND - Not Detected NA - Not Analyzed NP - Not Provided 0 - Composite Sample TPH-G - Total petroleum hydrocarbons as gasoline TPH-D - Total petroleum hydrocarbons as diesel MTBE - Methyl -tert butyl ether TEA - Tert-butyl alcohol DIPE - Di-isopropyl ether ETBE - Ethyl-tert butyl ether TAME - Tert-amyl methyl ether MRL is elavated because ofmatrix interferences and because the sample required diluting Table 2 Historical Soil Analytical Results (4050) Page 10of 10 TABLE MONITORED NATURAL ATTENUATION OBSERVATION DATA Shell Service Station 4050 Gosford Road, Bakersfield, CA hDA1 410iiawfim ir Al P.7D YEWITIR P5 Dt4rl) i- TID 0P'w3p, AkV 7 VE4W23A1, n6m j YEW -3B I 16 PV.-LWz4A " P K'V InIntA'" 1p n Q 4/14/2005 353.0 5.0 2.0 48.0 27.0 353.0 95.0 7.0 2.0 121.0 52.0 71.2 5/18/2005 NA NA NA NA NA NA NA NA NA NA NA NA PID unavailable. 6/20/2005 647.0 8.0 8.0 298.0 56.5 421.0 331.0 153.5 24.2 647.0 282.0 222.9 7/14/2005 NA NA NA NA NA NA NA NA NA NA NA NA PID unavailable. 8/9/2005 215.0 10.8 1.5 147.0 30.5 5.1 8.4 2.1 2.5 215.0 83.5 50.6 9/28/2005 3863.0 194.0 93.9 119.0 238.0 3863.0 782.0 848.0 321.0 2279.0 1279.0 1001.7 10/12/2005 249.9 16.6 16.6 16.6 16.6 249.9 116.6 55.4 55.4 55.4 16.6 61.6 2/l/2006 99.9 0.0 0.0 0.0 0.0 20.0 99.9 20.0 0.0 0.0 0.0 14.0 5/16/2006 NA NA NA NA NA NA NA NA NA NA NA NA PID unavailable. 8/16/2006 NA NA NA NA NA NA NA NA NA NA NA NA 12/27/2006 NA NA NA NA NA NA NA NA NA NA NA NA 3/10/2007 16.6 1.3 8.9 1.7 1.6 1.6 16.6 1.6 4.0 8.1 3.2 4.9 6/19/2007 NA NA NA NA NA NA NA NA NA NA NA NA 9/21/2007 NA NA NA NA NA NA NA NA NA NA NA NA 12/3/2007 NA NA NA NA NA NA NA NA NA NA NA NA 3/5/2008 43.6 21.1 15.4 15.4 12.6 1 9.8 43.6 7.0 7.0 4.2 7.0 Notes as hexane mcfm - measured cubic feet per minute scfm - standard cubic feet per minute ppm - parts per million PID - photo ionization detector TABLE4 SOIL VAPOR SAMPLING ANALYTICAL DATA (HYDROCARBONS AND FUEL OXYGENATES) Shell Service Station 4050 Gosford Road, Bakersfield, CA I . wymv) . .. NITE19::::: VEW-1A 4/14/2005 ND<3.0 ND ND<0.0005 0.0022 0.002 0.0146 1.1 4.0 ND<0.002 ND<0.002 ND<0.002 ND<0.002 5/14/2005 ND<3.0 ND 0.00071 0.0017 0.00094 0.0038 2.0 7.1 ND<0.002 ND<0.002 ND<0.002 ND<0.002 620/2005 ND<3.0 ND 0.00054 0.0011 ND<0.0005 0.00292 1.2 4.5 ND<0.002 ND<0.002 ND<0.002 ND<0.002 7/14/2005 ND<3.0 ND 0.00074 0.0018 ND<0.0005 0.00186 1.2 4.4 ND<0.002 ND<0.002 ND<0 0-02 ND<0.002 8/9/2005 ND<3.0 ND ND<0.002 0.0054 ND<0.002 ND<0,004 0.7 2.5 ND<0.008 ND<0.008 ND<0.008 ND<0.008 9/28/2005 3.2 13 0.004 0.026 0.015 0.129 0.93 33 ND<0.004 ND<0.004 ND<0,004 ND <0.004 10/13/2005 ND<3.0 ND- ND<0.0005 0.0021 ND<0.0005 ND<0.0005 0.51 1.5 ND<0.002 ND<0.002 ND<0.002 N5<0.002 2/1/2006 ND<3.0 ND ND<0.00050 0.00084 ND<0.00050 ND<0.0010 0.100 037 ND<0.002 ND<0.002 ND<0,002 ND<0.002 5/1612006 ND<30.00120NDND<0.00050 0.00230 0.00068 O. 120 0.013 0.05 WND<0.002 ND<0.002 ND<0.002 ND<0.002 8/16/2006 ND<3.0 ND ND<0.00050 0.0017 0.00088 0.0028 0.007 0.026 ND<0.002 ND<0.002 ND<0.002 ND<0.002 12/27/2006 ND<3.0 ND ND<0.00050 0.0079 0.00160 0.0052 0.0037 0.013 ND<0.002 ND<0.002 ND<0.002 ND<0.002 3/10/2007 5.2 21 0.0023 0.0049 0.0009 0.006 0.0034 0.012 ND<0.002 ND<0.002 ND<0,002 ND<0.002 6/19/2007 ND<3.0 ND ND<0.00050 0.0019 0.00087 0.0073 0.0025 ND<0.002 ND<0.W2 ND<0.002 ND<0.002 9121/2007 ND<3.0 ND 0.011 0.086 0.02 0.121 0.0062 0.022 ND<0.002 ND<0.002 ND<0.002 ND<0.002 12/3/2007 ND<3.0 ND ND<0.00050 0.003 0.00072 0.00316 0.0024 0.0087 ND<0,002 ND<0.002 ND<0.002 ND<0.002 3/512008 ND<3.0 ND ND<0.00050 0.0020 ND<0.0W50 0.0010 0.0039 0.014 ND<0.0020 ND<0,0020 ND<0,0020 ND<0.0020 VKW -IB 7 4114/2005 ND<3.0 ND ND<0.0005 0.0035 0.0028 0.0181 1.2 4.2 ND<0.002 ND<0.002 ND<0.002 ND<0.002 5/18/2005 ND<3.0 ND ND<0.0005 0.0019 0.00089 0.00329 0.0023 0.0083 ND<0,002 ND<0.002 ND<0,002 ND<0.002 612012005 ND<3.0 ND ND<0.0005 0.001 ND,<0.0005 0.00275 0.14 0.52 ND<0.002 ND<0,002 ND<0,002 7/14/2005 ND<3.0 ND 0.00058 0.0011_ ND<0.0005 ND<0.001 0.0053 0.019 ND<0,002 ND<0.002 ND<0,002 ND<0.002 8/9/2005 ND<3.0 ND ND<0.002 0.0034 ND<0M2 ND<0.004 0.17 0.60 ND<0.008 ND<0.008 ND<0.008 ND<0.002 ND<0.008 9128/2005 ND<3.0 ND 0.0019 0.011 0.01049 0.042 0.160 0.59 ND<0.004 ND<0.004 ND<0.004 ND<0M4 10/13/2005 ND<3.0 ND ND<0.0005 0.0024 ND<0.0005 ND<0.001 0.008 0.027 ND<0.002 ND<0.002 ND<0.002 ND<0.002 2/112006 ND<3.0 ND 0.00067 0.0024 ND<0.0005 ND<0.001 ND<0.002 ND<0.0072 ND<0,002 ND<0M2 ND<0,002 ND<0.002 5/1612006 ND<3.0 ND 0.00084 0.0025 0.00056 0.0025 0.000 0.023 ND<0,002 ND<0.002 ND<0.002 ND<0.002 8/16/2006 ND<3.0 ND ND<0.0005 0.0024 0.0021 0.0068 0.0066 0.024 ND<0.002 ND<0.002 ND<0,002 ND<0.002 12/27/2006 ND<3.0 ND ND<0.00050 0.0071 0.0014 0.0047 0.0043 0.015 ND<0.002 ND<0M2 ND<0.002 ND<0.002 3/10/2007 9.1 37 0.0025 0.0063 0.01022 0.0073 0.0023 0.0083 ND<0.002 ND<0.002 ND<0.002 ND<0M2 6/1912007 ND<3.0 ND ND<0,00050 0.0031 0.0016 0.0127 0.0036 ND<0.002 ND<0.002 ND<0.002 ND<0M2 9121/2007 ND<3.0 ND 0.019 0.091 0.028 0.12 0.0061 0.022 ND<0,002 ND<0.002 ND<0,002 ND<0.002 12/3/2007 ND<3.0 ND 0.00067 0.0045 0,0015 0.0067 0.003 0.011 ND<0.002 ND<0.002 ND<0.002 ND<0.002 31512008 ND<3.0 ND- ND<0.00050 0.0025 ND<0.00050 ND<0.001 5 0.0031 0.011 ND<0.0020 ND<0.0020 ND<0,0020 NLX0.0020000 VEW-2A 4/14/2005 18 t4MRNR%M 74 ND<0.002 ft Wqm& OEA"' MOW" 31 9w'! 0.0028 0.0029 0.0197 9.7 35 ND<0.008 ND<0.008 ND<0.008 ND<0.008ND0-8 5/18/2005 20 82 0.0036 0.002 0.0011 0.00309 20 73 ND<UO2 ND<0.002 0.002 tN2 0.00220. 12 6/20/2005 150 615 ND<0.005 ND<0.005 ND<0.005 ND<0.005 8.8 32 ND<0.02--- ND<0M ND<0.02 ND<,) 02ND<0.02 7/1V2005 25 102 0.00078 0.0023 ND<0.0005 0.0027 16.0 57 0.012 ND<0.002 0.0065 8/9/2005 240 984 ND<0.033 ND<0.0330 ND<0.033 ND<0.065 4.0 15 ND<0.13 ND<0.13 ND<0,13 ND<0.002 ND<0.13 9/2V2005 3.3 14 0.01017 0.010 0.0048 0.040 0.830 3 ND<0.004 ND<0.004 ND<0.004 ND<0.004 10/1312005 5.3 22 ND<0.001 ND<0.001 ND<0.001 ND<0.002 2.400 8.6 ND<0.04 ND<0.04 ND<0.04 ND<0.04 2/1/2006 ND<3.0 ND ND<0.00050 0.0011 ND<0.00050 ND<0.0010 0.820 3.0 ND<0.002 ND<0.0-02 ND<0.002 ND<0.002 5/1612006 ND<3.0 ND ND<0.00050 0.01018 0.00056 0.0025 0.720 2.6 ND<0.002 ND<0.002 ND<0,002 ND<0.002 8/16/2006 ND<3.0 ND ND<0.00050 0. ONO15 0.00089 0.0029 0.180 0.65 ND<0.002 ND<0.002 ND<0.002 ND<0.002 12/27/2006 ND<3.0 ND ND<0.00050 0. N8 7 0.0014 0.0047 0.0031 0.11 ND<0.002 ND<0.002 ND<0.002 3/10/2007 ND<3.0 ND 0.0015 0.0033 0.00098 0.0028 0.031 0.11 ND<0.002 ND<0.002 ND<0.002 ND<0.002 ND<0.002 6/19/2007 ND<3.0 ND ND<0.00050 0014 0005 0073 0059 ND<0.002 ND<0.002 ND<0M2 ND<0.002 9121/2007 ND<3.0 ND 0.0076 054 014 119 028 0.10 ND<0.002 ND<0.002 ND<0.002 ND<0M2 12/3/2007 ND<3.0 ND 0.0011 0.0064 0.0012 0.0043 0.0084 0.030 ND<0.002 ND<0.002 ND<0M2 ND<0.002 3/5/2008 ND<3.0 ND ND<0.00050 0.0025 ND<0.00050 ND<0.0015 0.0075 0.027 ND<0.0020 ND<0.0020 ND<0.0020 ND<0.0020 Page 1 of 4 TABLE SOIL VAPOR SAMPLING ANALYTICAL DATA (HYDROCARBONS AND FUEL OXYGENATES) Shelf Service Station 4050 Goslord Road, Bakersfield, CA Jj fpf)r6v : ppnty) 6pmu): ptmm) ....... 40p)mv) fpo jv.y: 1 j60): YEW-28 smspyAW W"M XWRIPWIMM i24/1412005 4.9 20 ND<0.0005 0.0011 0.00074 0.0052 3.5 13 ND<0.002 ND<0.002 0.0028 ND<0.002 5/1812005 ND<3.0 ND ND<0.0005 0.0011 0.00075 0.00259 0.011 0.041 Nl><0.002 ND<0.002 ND<0.002 6/20/2005 5.7 23 0.00057 0.0011 Nl><0.0005 0.0032 7.9 29 04067 ND<0.002 0.003 ND<0.002 ND<0.002 7/14/2005 ND<3.0 ND 0.00098 0.0017 ND<0.0005 0.0024 0.0085 0.031 ND<0.002 ND<0.002 ND<0.00 N1><0.D02 8/9/2005 5.5 23 ND<0.002 0.0028 ND<0.002 ND<0.004 4.6 17 0.023 Nl)<0.008 ND<0M8 ND<0.008 9/28/2005 73 30 NDI<0.4 ND<0.2 ND<0.2 11 39 ND<0.8 ND<0.8 ND<0.8 10/13/2005 ND<3.0 ND ND<0.2 ND<0.005 0.0016 Nl><0.005 ND<O.DOI 5.2 19 ND<0.002 ND<0.002 ND<0.8 ND<0.002 Nl><0.002 2/1/2006 ND<3.0 ND Nl><0.00050 0.00093 ND<0.00050 ND<0.001 ND<0.002 ND<0.0072 ND<0.002 Nl><0.002 ND<0.002 ND<0.002 S/16/2006 ND<3.0 ND Nl><0.00050 0.00015 ND<0.00050 0.00014 0.100 0.38 ND<0.002 ND<0.002 ND<0.002 ND<0.002 8/16/2006 ND<3.0 ND Nl><0.00050 0.0013 0.00055 0.0018 0.089 0.32 ND<0.002 ND<0.002 ND<0M2 ND<0.002 12/2712006 ND<3.0 ND Nl)<0.00050 0.0079 0.0014 0.0047 0.0032 0.012 ND<0.002 ND<0.002 ND<0.002 ND<0.002 3/10/2007 3.4 14 0.0036 0.0059 0.0022 0.0068 ND<0.002 ND<0.0072 ND<0.002 ND<0.002 ND<0.002 ND<0.002 6/19/2007 ND<3.0 ND Nl><0.00050 0.0012 ND<0.00050 0.0021 0.0023 NA ND<0.002 ND1<0.002 ND<0.002 ND<0.002 9/21/2007 ND<3.0 ND 0.00077 0.0069 0.0012 0.0081 ND<0.002 ND<0.0072 ND<0.002 ND<0.002 ND<0.002 ND<0.002 12/3/2007 ND<3.0 ND 0.0022 0.0110 0.0019 0.0070 0.041 0.15 ND<0.002 ND<0.002 ND<0.002 ND<0.002 3/512008 ND<3.0 ND ND<0.00050 0.0024 ND<0.00050 0.0010 ND<0.002 ND<0.0072 ND<0.0020 ND<0.0020 ND<0.0020 ND<0.0020 VEW-3A V7 4/14/2005 150 615 ND<0.02 ND<0.02 ND<0.02 ND<0.02 99 360 0.59 ND<0.08 ND<0.08 ND<0.08 5/18/2005 75 307 0.00082 0.0027 0.0017 0.0058 76 280 ND<0.002 ND<0.002 0.012 0.011 6120/2005 1,600 6,557 0.059 ND<0.01 ND<0.01 ND<0.01 53 190 0.23 ND<0.04 ND<0.04 7/14/2005 570 2,336 ND<0.005 ND<0.005 ND<0.005 ND<0.01 31 110 ND<0.02 ND<0.02 ND<0.02 ND<0.04 ND<0.02 8/9/2005 2.200 9,016 ND<0.31 ND<0.31 ND<0.31 ND<0.63 52 190 ND<1.3 ND<1.3 ND<1.3 ND<1.3 9/28/2005 100 410 ND<0.005 0.0062 ND<0.005 0.0285 32.0 110 0.087 ND<0.02 ND<0.02 ND<0.02 10/13/2005 55 225 ND<0,0075 0.019 ND<0.0075 ND<0.01 5 34.0 120 0.054 ND<0.015 ND<0.01 5 ND,<0.015 2/1/2006 8.4 34 ND<0.0010 0.0013 ND<0.0010 ND<0.0020 7.7 28 ND<0.004 ND<0.004 ND<0.004 ND<0,004 5/16/2006 73 30 ND<0.0010 0.0013 ND<0.0010 ND<0.0020 7.7 28 ND<0.004 ND<0.004 ND<0.004 ND<0.004 811612006 3.8 16 ND<0.0010 0.0022 0.0013 0.0045 1.5 5.6 ND<0.004 ND<0.004 ND<0.004 ND<0.004 12/27/2006 ND<3.0 ND ND<0.00050 0.0074 0.0032 0.011 1.2 43 ND<0.002 ND<0.002 ND<0.002 3/10/2007 ND<3.0 ND 0.002 0.0024 ND<0.0020 ND<0.0020 0.29 1.0 ND<0.008 ND<0.008 ND<0.008 ND<0,002 ND<0.008 6/19/2007 ND<3.0 ND 0.002 0.0023 04016 0.01058 042 NA ND<0.002 ND<0.002 ND<0.002 9/2112007 NEX3.0 ND 0.01 0.056 0.016 0.132 ND<0.002 ND<0.0072 ND<0.002 ND<0.002 ND<0M2 ND<0.002 ND<0.002 1213/2007 ND<3.0 ND 0.00056 0.004 0.0011 0.0054 0.0053 0.019 ND<0.002 ND<0.002 ND<0.002 ND<0.002 3/5/2008 ND<3.0 ND ND<0.00050 0.0012 ND<0.00050 ND<0.0015 0.0039 0.014 ND<0.0020 ND<0.0020 ND<0.0020 ND<0.0020 VEW-311 k" 110 ND<0.016 ND<0.016 ND<0.016 ND<0.0164/14/2005 30 123 ND<0.004 ND<0.004 ND<0.004 0.011 31 5/18/2005 9.4 39 0.00085 0.0017 0.0015 0.0052 11 38 ND<0.002 ND<0.002 ND<0.002 6/20/2005 18 74 0.001 0.0021 0.0014 0.011 12 44 ND<0.002 ND<0M2 0.0113 ND<0.002 ND<0M2 7/14/2005 17 70 0.001 0.0013 ND<0.0005 0.0016 19 68 ND<0.002 ND<0.002 ND<0.002 ND<0.002 8t9/2005 10 41 ND<0M2 0.003 ND<0.002 ND<0.004 8.6 31 ND<0.008 ND<0.008 ND<0.008 ND<0.008 9/28/2005 73 30 ND<0,02 ND<0.02 ND<0.02 D<0 04 8.9 32 ND<0.08 ND<0.08 ND<0.08 ND<0.08 10/13/2005 9.2 38 ND<0.001 0.0031 ND<0.001 ND<0.002 10.0 36 ND<0.004 ND<0.004 ND<0.004 ND<0.004 2/1/2006 6.4 26 ND<0.0010 0.0014 ND<0,0010 ND<0.0020 63 23 ND<0,004 ND<0.004 ND<0.004 ND<0.004 5/16/2006 12 49 ND<0.0010 0.0022 ND <0.0010 0.0022 9.2 33 ND<0,004 ND<0.004 ND<0.004 ND<0.004 8/16/2006 83 34 ND<0.0010 0.01019 0.0011 0.0037 8 29 ND<0.004 ND<0.004 ND<0.004 ND<0.004 12/27/2006 9.4 39 ND<0.0010 0.0067 0.0031 0.011 12 42 ND<0,004 ND<0.004 ND<0.004 ND<0.004 3110/2007 6.5 27 ND<0,002 ND<0.002 ND<0.002 ND<0.002 6.2 23 ND<0.080 ND<0.080 ND<0.080 ND<0.080 6A9/2007 ND NA ND<0.00050 0.0011 ND<0.00050 0.0019 63 NA ND<0M2 ND<0.002 ND<0.002 ND<0.002 9/21/2007 5.7 23 0.0061 0.057 0.0092 0.088 5.9 21 ND<0.02 ND<0.02 ND<0.02 ND<0.02 12/3/2007 33 14 ND<0.020 ND<0.020 ND<0.040 3.7 13 ND<0.080 ND<0.080 ND<0.080 ND<0.080 3/5/2008 4.8 20 0.0019 ND<0.00050 ND<0.0015 0.26 0.94 ND<0.0020 ND<0.0020 ND<0.0020 ND<0.0020 Page 2 of 4 TABLE SOIL VAPOR SAMPLING ANALYTICAL DATA (HYDROCARBONS AND FUEL OXYGENATES) She[[ Service Station 4050 Gosrord Road, Bakersfield, CA my ......... my a VEW-4A w- t-w. S-. t 4/14/2005 (1 MIN) ND<3.0 NO ND<0.004 ND<0.004 ND<0.004 0.0087 039 1.4 ND<0.016 ND<0.016 ND<0.016 ND<0.016 4/1412005 (2 MIN) ND<3.0 NO ND<0.005 ND<0.005 ND<0.005 ND<0.005 0.57 2.0 ND<0.016 ND<0.016 ND<0.016 ND<0.016 4/14/2005 (5 MIN) 4.3 is ND<0.005 ND<0.005 ND<0.005 ND<0.D05 1.50 5-3 ND<0.02 ND-<0.02 ND<0.02 ND<0.02 5/1812005 ND<3.0 NO 0.00058 0.0016 0.-0-013 0.0059 0.94 3.4 ND<0.002 ND<0.002 ND<0.002 ND<0.002 6/2012005 85 NO 0.0017 0.0013 0.00068 0.0036 0.15 0.53 ND<0.002 ND<0.002 ND<0.002 ND<0.002 7/14/2005 3.3 14 0.0012 0.0016 ND<0.0005 0.003 0.17 0.61 ND<0.002 ND<0.002 ND<0.002 ND<0.002 8/9/2005 ND<3.0 NO ND<0.002 0.0027 ND<0.002 ND<0.004 0.041 0.15 R6<0 0-08 ND<0.008 ND<0.008 ND<0.008 9/2812005 ND<3.0 NO ND<0.001 0.0074 0.0025 0.0207 0.052 0.19 ND<0.004 ND <0.004 0.018 10/13/2005 ND<3.0 NO ND<0.002 0.0025 ND<0.002 ND<0M4 0.058 0.21 ND<0.008 ND <0.008 ND<0.008 ND<0.004 ND<0.008 2/1/2006 ND<3.0 NO NIX0.00050 0.00093 ND<0.00050 ND<0.0010 0.090 0-33 ND<0.002 ND<0.002 ND<0.002 ND<0.002 5/16/2006 ND<3.0 NO ND<0.00050 0.0018 ND<0,0010 0.0017 0.055 0.20 ND<0.002 ND<0.002 ND<0.002 ND<0.002 8/16t2006 ND<3.0 NO ND<0.00050 0.0015 0.00099 0.0032 0.022 0.080 ND<0.002 ND<0.002 ND<0.002 12/2712006 ND<3.0 NO ND<0.00050 0.011 0.0059 0.019 0.026 0.092 ND<0.002 ND<0.002 ND<0.002 ND<0.002 ND<0.002 3/10/2007 ND<3.0 NO ND<0.002 0.0024 ND<0.002 ND<0.002 0.012 0.043 ND<0.008 ND<0.008 ND<0.008 ND<0.008 6/1912007 ND<3.0 NO ND<0.00050 0.00076 ND<0.00050 0.00100 ND<0.002 NA ND<0.002 ND<0.002 ND<0.002 ND<0.002 9/2112007 ND<3.0 NO 0.0082 0.077 0.014 0.121 ND<0.008 ND<0.029 ND<0.008 ND<0.008 ND<0.008 ND<0.008 12/312007 ND<3.0 NO ND<0.00050 0.0022 0.00060 0.00275 0.0054 0.019 ND<0.002 ND<0.002 ND<0.002 ND<0.002 3/5/2008 ND<3.0 NO ND<0.00050 0.0021 ND<0.00050 ND<0.0015 0.0022 0.0081 ND<0.0020 ND<0.0020 ND<0.0020 NEX0.0020 VEW-4B A!* oAr" y2W Ak Affig".9 ND<0.008 ND<0.008 ND<0.008 ND<0.0084/1412005 (1 MIN) ND<3.0 NO ND<0.002 0.0021 0.0025 0.0156 13 4.5 4/14/2005 (2 MIN) ND<3.0 NO ND<0.004 ND<0,004 ND<0.004 ND<0.004 1.3 4.8 ND<0.016 ND<0.016 ND<0.016 4/1412005 (5 MIN) ND<3.0 NO ND<0.004 ND<0.004 ND<0.004 0.0081 1.2 4.4 ND<0.016 ND<0.016 ND<0.016 NE><0.016 ND<0.016 5/18/2005 ND<3.0 NO 0.00067 0.0012 0.0013 0.0054 0.0054 0.019 ND<0.002 ND<0.002 ND<0.002 ND<0.002 6120/2005 ND<3.0 NO 0.00067 0.0016 0.00074 0.005 0.13 0.47 ND<0.002 ND<0.002 ND<0.002 Nb<-0.002 711412005 ND<3.0 NO 0.00092 0.0013 ND<0.0005 0.0018 ND<0.002 ND<0.0072 ND<0.002 ND<0.002 ND<0.002 ND<0.002 819/2005 ND<3.0 NO ND<0.002 0.0039 ND<0.002 ND<0.004 037 1.4 ND<0.008 ND<0.008 ND<0.008 ND<0.008 9/28/2005 ND<3.0 NO ND<0.002 0.0075 0.0036 0.0295 0.25 0.91 ND<0.008 ND<0.008 ND<0.008 ND<0.008 10/13/2005 ND<3.0 NO ND<0.001 0.0026 ND<0.001 ND<0.002 0.034 0.12 ND<0.008 ND<0.008 ND<0.008 ND<0.008 2/112006 ND<3.0 NO ND<0.00050 0.0010 ND<0.00050 ND<0.0010 0.012 0.044 ND<0.002 ND<0.002 ND<0.002 ND<0M2 5/16/2006 ND<3.0 NO ND<0.00050 0.0022 0.00084 0.0027 0.130 0.49 ND<0.0032 ND<0.0032 ND<0.0032 ND<0.0032 8/1612006 ND<3.0 NO ND<0.00050 0.0013 0.00086 0.0027 0.029 0.10 ND<0.0032 ND<0.0032 ND<0.0032 ND<0.0032 12127/2006 ND<3.0 NO 0.00074 0.012 0.0068 0.022 0.013 0.048 ND<0.002 ND<0.002 ND<0.002 ND<0.002 3/1012007 ND<3.0 NO ND<0.002 ND<0.002 ND<0.002 ND<0.002 ND<0.008 ND<0.029 ND<0.008 ND<0.008 ND<0.008 ND<0.008 611912007 ND<3.0 NA ND<0.00050 0.00110 ND<0.00050 0.00216 0.02300 NA ND<0.002 ND<0.002 ND<0.002 912112007 ND<3.0 NA 0.024 0.094 0.032 0.158 ND<0.002 ND<0.0072 ND<0.002 ND<0.002 ND<0.002 ND<0.002 ND<0.002 1213/2007 4.0 16 ND<0.020 ND<0.020 ND<0.020 ND<0.040 4.7 17 ND<0.080 ND<0.080 ND<0.080 ND<0.080 315/2008 ND<3 NO ND<0.00050 0.0014 ND<0.00050 ND<0.0015 ND<0.002 ND<0.0072 ND<0.0020 ND<0.0020 ND<0.0020 ND<0.0020 VEW-5A 4.0 I WIWI A", It" wa" '11w;' ;Ne n'W-FA -me- 4/1412005 89 365 ND <0.013 0.022 ND<0.013 ND<0.013 46 170 0.062 ND<0.05 ND<0.05 5/18/2005 40 164 0.0009 0.003 0.0016 0.0056 55 200 0.014 ND<0.002 0.0074 ND<0.05 0.0045 6/20/2005 440 1,803 0.013 ND<0.005 NEX0.005 0.0316 4.30 16 ND<0.02 ND<0.02 ND<0.02 ND<0.02 7/14/2005 92 377 0.0012 0.0017 ND<0.0005 0.0018 1.2 4.4 0.0095 ND<0.002 0.0038 ND<0.002 8/9/2005 480 1967 , ND<0.063 ND<0.063 ND<0.063 ND<0.13 3.0 11 ND<0.25 ND<0.25 ND<0.25 ND<0.25 9/2812005 62 254 MEX0 0-02 0.0072 0.0047 0.036 1.7 6.1 ND<0.008 ND<0.008 ND<0.008 ND<0.008 10/13/2005 20 82 ND<0.002 0.0022 ND<0.002 ND<0.004 2.2 7.8 ND<0.008 ND<0.008 ND<0.008 ND<0.008 2/1/2006 ND<3.0 NO ND<0.00050 0.0011 ND<0.00050 ND<0.0010 13 4.8 ND<0.002 ND<0.002 ND<0.002 ND<0.002 ND<0.0045/16/2006 ND<3.0 NO ND<0.0010 0.0026 NEX0,0010 0.0028 0320 11 ND<0.004 ND<0.004 ND<0.004 8/16/2006 ND<3.0 NO ND<0.00050 0.0019 0.0017 0.0058 0.083 030 ND<0.002 ND<0.002 ND<0.002 12/27/2006 ND<3.0 NO ND<0.00050 0.0064 0.0029 0.0095 0.021 0.077 ND<0.002 ND<0.002 ND<0.002 ND<0.002 ND<0.002 3/10/2007 ND<3.0 NO ND<0.002 0.0023 ND<0.002 ND <0.002 0.011 0.038 ND<0.008 ND<0.008 ND<0.008 ND<0.008 12/27/2006 ND<3.0 NO ND<0.00050 0.0064 0.0029 0.0095 0.021 0.077 ND<0.002 ND<0.002 ND<0.002 ND<0.002 6/1912007 NS NS NS NS NS NS NS NS NS NS NS NS 9/21/2007 ND<3.0 NO 0.023 0.19 0.032 0.228 0017 0.062 ND<0.002 ND<0.002 ND<0.002 ND<0121312007 3/512008 J ND<3.0 ND<0.00050 0.0024 0 1 0.076 0.028 ND<0.002 ND<0.002 0-02 ND<3.0 ND NIX0.00050 0.0023 NO 0.024 ND<0.0020 ND<0.0020 ND<0.0020 Page 3 of 4 TABLE 4 SOIL VAPOR SAMPLING ANALYTICAL DATA HYDROCARBONS AND FUEL OXYGENATES) Shell Service Station 4050 Gosford Road, Bakersfield, CA baT. .:.:.:.:.:.::: TPIi C::::::: BEN2EN1 :::::....... I bTiC ::: MTB.:::: 1ifTBE.:: SBA::::::::::: bIPE:::: ETB::::.::.:.7f......:.:: s3fN2LN! ::...:.kYt N S:: 4/14/2005 17 70 ND<0.004 ND<0.004 ND<0.004 ND<0.004 31 110 0.032 ND<0.016 ND <0.016 ND<0.016 5/18/2005 ND<3.0 NO 0.00062 0.0016 0.0013 0.0045 0.015 0.053 ND <0.002 ND <0.002 ND<0.002 ND<0.002 6/20/2005 23 94 0.00063 0.0011 ND<0.0005 0.00262 15 53 0.02 ND <0.002 ND<0.002 NIX0.002 7/14/2005 ND <3.0 NO 0.00069 0.0015 ND<0.0005 0.001 0.0031 0.011 ND <0.002 ND <0.002 ND<0.002 ND<0.002 8/9/2005 24 98 ND <0.002 0.0025 ND<0.002 ND <0.004 33 120 0.02 ND<0.008 ND<0.008 ND<0.008 9/2812005 24 98 ND<0.001 0.0051 0.0023 0.0185 24 85 0.0046 ND<0.004 0.0041 ND<0.004 10/1312005 10 39 ND<0.001 0.0001 ND <0.001 ND <0.002 13 46 ND<0.002 ND <0.002 ND <0.002 ND <0.002 2/1/2006 ND<3.0 NO ND<0.00050 0.0011 ND<0.00050 ND<0.001 ND <0.002 NO <0.0072 ND<0.002 ND<0.002 ND<0.002 ND<0.002 5/16/2006 ND<3.0 ND ND<0.001 0.0020 ND<0.0010 0.0021 0.180 0.64 ND<0.004 ND<0.004 ND<0.004 ND<0.004 8/16/2006 ND<3.0 NO ND<0.00050 0.0017 0.0011 0.0035 0.011 0.040 ND<0.004 ND<0.004 ND <0.004 ND <0.004 12/27/2006 ND<3.0 NO ND <0.00050 0.0073 0.0023 0.0080 ND<0.002 NO <0.0072 ND<0.002 ND<0.002 ND<0.002 ND<0.002 3/10/2007 ND<3.0 NO 0.00290 ND <0.002 ND<0.002 ND <0.002 ND<0.002 ND<0.029 ND<0.002 ND<0.002 ND <0.002 ND <0.002 6/19/20_07 NS NS NS NS NS NS NS NS NS NS NS NS 3/10/2007 ND<3.0 NO 0.00290 ND<0.002 ND<0.002 ND<0.002 ND<0.002 ND<0.029 ND<0.002 ND<0.002 ND <0.1702 ND <0.002 9/21/2007 ND<3.0 NO 0.022 0.13 0.037 0.192 0.003 0.011 ND <0.002 ND<0.002 ND <0.002 ND <0.002 12/3/2007 ND<3.0 NO 0.0026 0.00091 0.0057 0.0034 0.0089 0.032 ND<0.002 ND <0.002 ND<0.002 ND<0.002 3/5/2008 ND <3.0 NO ND<0.00050 0.0020 ND<0.00050 ND <0.0015 ND<0.002 NO <0.007 2ND <0.0020 ND<0.0020 ND<0.0020 ND<0.0020 Notes: TPH -G Concentration NO) - TPH -G concentration (ppmv) x I Ofix 100 plmole x mole/24.4 I x 106 ue/p, NO - Not detected NS - Not sampled NA - Not availab)e ppmv - parts per million by volume ug/L - micrograms per liter TPH -G - Total petroleum hydrocarbons as gasoline MTBE - Methyl -tert butyl ether TBA - Tert-butyl alcohol DIPE - Di- isopropyl ether ETBE - Ethyl tert-butyl ether TAME - Tert-am I methvl ether Page 4 of 4 TABLE SOIL VAPOR SAMPLING ANALYTICAL DATA (FIXED GASES) Shell Service Station 4050 Gosford Road, Bakersfield, CA 07 I 2) k,tb,a ...... 4 86o 4y VEW-1A ND WA 10.14/14/2005 10.1 79.7 ND 5/18/2005 12.6 79.5 ND ND 7.9 6/20/2005 10.1 80.5 ND ND 9.4 7/14/2005 10.3 79.1 ND ND 10.6 8/9/2005 10.0 78.9 ND ND 11.1 9/28/2005 10.9 76.9 ND ND 12.2 10/13/2005 12-3 79.0 ND ND 8.8 2/1/2006 12.8 79.6 ND ND 7.6 5/16/2006 14.1 79.8 ND ND 6.11 8/16/2006 14.1 79.4 ND ND 6.50 12/27/2006 15.1 79.4 ND ND 5.45 3/8/2007 18-3 78.8 ND ND 2.88 6/19/2007 15.8 79.0 ND ND 5.21 9/21/2007 16.0 78.2 ND ND 5.80 12/3/2007 16.5 77.8 ND ND 5.67 31512008 17.4 78.2 ND ND 4-39 VEW-1B 4/14/2005 10.4 79.8 ND ND 9.8 5/18/2005 12.6 79.7 ND ND 7.7 6/20/2005 10.2 80.4 ND ND 9.4 7/14/2005 10.8 79-3 ND ND 9.9 8/9/2005 10-3 78.8 ND ND 10.9 9/28/2005 11.2 77.0 ND ND 11.8 10/13/2005 11.0 79.6 ND ND 9.4 2/1/2006 12.9 79.9 ND ND 7.2 5/16/2006 14.2 79.9 ND ND 5.85 8/16/2006 13.7 79.6 ND ND 6.72 12/27/2006 15.0 79.6 ND ND 5.41 3/8/2007 18.2 78.9 ND ND 2.87 6/19/2007 15.9 79.2 ND ND 4.96 9/21/2007 15.8 78.5 ND ND 5.65 12/3/2007 15.8 77.9 ND ND 634 3/5/2008 16.5 78.4 ND ND 5.09 Page 1 of 5 TABLE SOIL VAPOR SAMPLING ANALYTICAL DATA (FIXED GASES) Shell Service Station 4050 Gosford Road, Bakersfield, CA z .................. 0 ....... I ........... .......... VEW-2A X, 4/14/2005 83 80.9 ND ND 10.9 5/18/2005 10.1 803 ND ND 9.5 6/20/2005 7.0 80.9 ND ND 12.2 7/14/2005 79.6 ND ND 11.8 8/9/2005 8.6 7.2 79.1 ND ND 13.6 9/28/2005 16.0 77.5 ND ND 6.4 10/13/2005 9.9 79.5 ND ND 10.6 2/l/2006 12-3 79.7 ND ND 7.9 5/16/2006 14.0 79.6 ND ND 6.39 8/16/2006 13.0 79.5 ND ND 7.51 12/27/2006 14.6 79.4 ND ND 6.06 3/8/2007 15.9 79.0 ND ND 2.97 6/19/2007 15.9 78.7 ND ND 5-39 9/21/2007 15.5 78.2 ND ND 6-36 12/3/2007 16.6 77.9 ND ND 5.44 3/5/2008 16.8 78.0 ND ND 5.21 VEW-211 4_k I'--,"&-- -' J k , I -Al A , 1 m ND ND 10.74/14/2005 9.1 80.2 5/18/2005 11.2 80.1 ND ND 8.7 6/20/2005 9.7 80.5 ND ND 9.9 7/14/2005 10.5 79.3 ND ND 10.2 8/9/2005 10.0 78.8 ND ND 11.2 9/28/2005 12.0 77.1 ND ND 10.9 10/13/2005 11.1 79.5 ND ND 9.4 2/l/2006 12.6 79.8 ND ND 7.6 5/16/2006 14.6 79.8 ND ND 5.62 8/16/2006 13.7 79.7 ND ND 6.68 12/27/2006 14.7 79.6 ND ND 5.68 3/8/2007 18.1 78.9 ND ND 2.97 6/19/2007 18.0 78.7 ND ND 3.31 9/21/2007 16.0 78.5 ND ND 5.56 12/3/2007 15.8 78.0 ND ND 6.26 3/5/2008 16.3 78.3 ND ND 5-33 Page 2 of 5 m m m m m m m m m m m m m m m m m TABLE SOIL VAPOR SAMPLING ANALYTICAL DATA (FIXED GASES) Shell Service Station 4050 Gosford Road, Bakersfield, CA I I Carbon............. I ................... VEW-3A 6.2 81.5 ND ND 12.474/14/2005 5/18/2005 8.2 80.7 ND ND 11.1 6/20/2005 5.5 81.1 ND ND 13.4 7/14/2005 6.4 79.4 ND ND 14.2 8/9/2005 6.7 78.6 ND ND 14.7 9/28/2005 7.2 76.0 ND ND 16.8 10/13/2005 8.5 78.9 ND ND 12.6 2/l/2006 10.2 79.6 ND ND 10.1 5/16/2006 11.9 79.5 ND ND 8.58 8/16/2006 11.1 79.1 ND ND 9.81 12/27/2006 21.5 77.8 ND ND 0.69 3/8/2007 15.3 78.2 ND ND 6.47 6/19/2007 14.9 78.5 ND ND 6.64 9/21/2007 14.8 77.5 ND ND 7.71 12/3/2007 16.1 77.7 ND ND 6.27 3/5/2008 17.0 77.6 ND ND 5.46 VEW-36 A 4/14/2005 8.1 80.6 ND ND 11.3 5/18/2005 9.9 80.4 ND ND 9.7 6/20/2005 7.9 80.7 ND ND 11.4 7/14/2005 9.4 79.4 NQ ND 11.2 8/9/2005 8-3 79.2 ND ND 12.5 9/28/2005 9.5 76.8 ND ND 13.7 10/13/2005 10.2 79.4 ND ND 10.5 2/l/2006 11.6 79.8 ND ND 8.6 5/16/2006 13.1 79.8 ND ND 7.06 8/16/2006 12.6 79.4 ND ND 8.05 12/27/2006 14.4 79.5 ND ND 6.10 3/8/2007 15.7 79.1 ND ND 5.22 6/19/2007 15.0 78.8 ND ND 6.13 9/21/2007 15.0 78.2 ND ND 6.74 12/3/2007 15.7 77.6 ND ND 6.72 3/5/2008 1 16.2 1 77.9 ND ND 5.86 Page 3 of 5 m m m m m m m m m m m m m m m m m m m TABLES SOIL VAPOR SAMPLING ANALYTICAL DATA (FIXED GASES) Shell Service Station 4050 Gosford Road, Bakersfield, CA 1f.. .. I ............. I .. ... I ............. VEW4A 6.9 81.5 ND ND 11.54/14/2005 (1 MIN) 4/14/2005 (2 MIN) 6.8 81.6 ND ND 11.6 4/14/2005 (5 MIN) 8.0 82.1 ND ND 9.9 5/18/2005 7.8 81-3 ND ND 10.9 6/20/2005 6.8 81.2 ND ND 12.0 7/14/2005 7.8 79.7 ND ND 12.5 8/9/2005 8.5 78.8 ND ND 12.8 9/28/2005 9.8 76.8 ND ND 13.4 10/13/2005 8.8 79.5 ND ND 11.7 2/l/2006 11.0 79.8 ND ND 9.2 5/16/2006 12.8 79.6 ND ND 7.54 8/16/2006 13.0 79.1 ND ND 7.96 12/27/2006 14.2 79.1 ND ND 6.64 3/8/2007 15.1 78.7 ND ND 6.14 6/19/2007 14.7 78.5 ND ND 6.78 9/21/2007 14.4 77.9 ND ND 7.62 12/3/2007 15.9 77.5 ND ND 6.59 3/5/2008 163 77.7 ND ND 5.95 VEW4B 7 M-7 wFFF7gW-77m 4/14/2005 (1 MIN) 8.6 81.6 ND ND 9.8 4/14/2005 (2 MIN) 9.5 81.2 ND ND 9.3 4/14/2005 (5 MIN) 8.7 81.7 ND ND 9.7 5/18/2005 13-3 80.0 ND ND 6.6 6/20/2005 9.1 81.1 ND ND 9.7 7/14/2005 11.7 79.8 ND ND 8.5 8/9/2005 9.8 79.6 ND ND 10.6 9/28/2005 10.2 77.8 ND ND 12.0 1011312005 10.2 80.3 ND ND 9.5 2/l/2006 12.6 80.2 ND ND 7.1 5/16/2006 13.9 80.1 ND ND 6.07 8/16/2006 13.6 79.9 ND ND 6.51 12/27/2006 14.8 79.7 ND ND 5.47 3/8/2007 15.7 79.4 ND ND 4.93 6/19/2007 15.3 79.1 ND ND 5.62 9/21/2007 15.5 79.1 ND ND 5.46 12/3/2007 15.2 78.2 ND ND 6.53 3/5/2008 16.1 78.5 ND ND 5.42 Page 4 of 5 TABLE5 SOIL VAPOR SAMPLING ANALYTICAL DATA (FIXED GASES) Shell Service Station 4050 Gosford Road, Bakersfield, CA geR::::::::::::::::::: Q ?).................. r 0 ....... I .......................................... I ................ 0/d) I ...... VEW-5A 5.7 81.8 ND ND 12.5411412005 5/18/2005 10.0 80.2 ND ND 9.8 6/20/2005 3-3 81.6 ND ND 15.1 7/14/2005 5.8 79.9 ND ND 14-3 8/9/2005 4.5 79.8 ND ND 15.7 9/28/2005 5.2 76.9 ND ND 17.9 10/13/2005 7.7 79.8 ND ND 12.6 2/1/2006 11.8 79.7 ND ND 8.5 5/16/2006 12.9 79.7 ND ND 7.44 8/16/2006 11.4 79.5 ND ND 9.13 12/27/2006 14.0 79.2 ND ND 6.83 3/8/2007 15.3 79.0 ND ND 5.68 6/19/2007 NS NS NS NS NS 9/21/2007 14.6 78.2 ND ND 7.20 12/3/2007 15.2 77.8 ND ND 6.97 3/5/2008 16.1 78.2 ND ND 5.79 VEW-5B 4/14/2005 10.2 80.3 ND ND 9.5 5/18/2005 12.4 79.9 ND ND 7.7 6/20/2005 8.4 80.4 ND ND 11.2 7/14/2005 11.5 79.3 ND ND 9.2 8/9/2005 9.1 79-3 ND ND 11.6 9/28/2005 9.8 77.2 ND ND 13.0 10/13/2005 10.8 79.8 ND ND 9.4 2/1/2006 12.9 79.9 ND ND 7.2 5/16/2006 14.2 79.9 ND ND 5.86 8/16/2006 13.0 79.8 ND ND 7.24 12/27/2006 14.9 79.6 ND ND 5.50 3/8/2007 15.8 79.4 ND ND 4.80 6/19/2007 NS NS NS NS NS 9/21/2007 15.2 78.8 ND ND 6.08 12/3/2007 15.7 78.0 ND ND 6.27 3/5/2008 16.2 78.5 ND ND 5.32 Notes: ND - Not detected above limit noted; NS - not sampled m m*m m Page 5 of 5 m FIGURES JulW MWo W-Alf jMrw I 11 lei i f f', via Til ITT71 Mw 41 arIZ NO L o tV P 11-1., 19; rl p z IL OT11, OF Elm WINE. FANI IMI KIMI Vlw NEI MAMP-2A cu M n 21 ON z 15-: is 11 1111LFzwoL= Moll., T. Mod Elm MI a M 0; = Y:\ —She Sites \ - \4050 Gostord \2005 -03— —Low Ri- Cosure Request \E CURES (4050)_Low Risk Cosure Request,dwg, STE MAP NTH HSTOR CAL, 4 /15/2003 10:53:03 AM, RCOH Aildo MP 5500 PCL 6, 1:0.996317, 7, 7 VEW -5 VEW -4 0 ! L / 0 IL / 4 / L t HffE W3/52008 4.8 ND<D 0016 00073 *IDS 0022 NDm 0043 094 ND 0061 !.- /'11 IG wJQ fA O Y:\-She Sites \4 \4050 Gosiord \2005 -03- -Low Risk Cosure Request \FGURES (4050)_Low Risk Cosure Request.dwq, CGNCENTRATON MAP, 4/15/2008 10:53:06 AM, RCOH Aticio MP 5500 PCL 6, 1:0996317, 7, 7 VEW -3 PLANTER UST TYP) N W E S VEW -1 A NESTED VAPOR WELL LOCATION AND DESIGNATION TPH -g TOTAL PETROLEUM HYDROCARBONS AS GASOLINE MTBE METHYL TERT -BUTYL ETHER TBA TERT -BUM ALCOHOL A/L MICROGRAMS PER LITER ND< NOT DETECTED ABOVE LIMIT NOTED PPM PARTS PER MILLION 0 o Q U vE<V.4a Cn DATE TPHG BENZENE TOI.UKI E ETHI'L I TOTAL 541BE TBA BENZkM 1T.FNFS H Of L L 8 L W WM 3/5/2008 NDGi.O ND.00160 0.0021 NID.0022 ND.0010 0.0081 ND<O.0061 O :2 VE%V-4B DATE T llG BENZENE TOLL101E EMI, TOTAL NITBE TBA d Z BENZINE 1LE \FS L L L L 3/5!2008 ND<;.0 ND10.0016 0.0053 ND<0.0022 ND<0.0043 ND D.0072 NDm.0061 m VEW -SA DATE TPHG BENZENE TOLLUSE EMI, TOTAL St7BE TBA BENZENE EN'F Wcr L L L L L z0f.0 D,0.016 0.0088 N<0.022 N.03 021 1N<.0 Z CL VOK-5B d DATE TPHG T TOLUENE mm, TOTAL SfIBE TBA a Q BE1M BENZENE IJE"MI 315+00 L 1 90 I ND 16 ND 2 Nm 3 ND 72 ND<0/. 0L 061 CANOPY VEH' -2A DATE TPIiG BENZENE TOLUENE EI'H1L TOTAL NiTBE TBA m BENLFTE XILFNES L L L L L 0W 315/2008 ND-1.0 NDa0.0016 0.0095 NDm.0022 NDm.0043 0.027 ND<0.006] y EN -2 B U DATE TPHG BENZENE TOLUENE ETH1L- TOTAL 11TfBE TBA Wm BENZENE XILENES L) L L L L L 3/S/2008 ND-c3.0 ND10.0016 0.0090 ND10.0022 0.0045 ND10.0072 ND<0.0061 CAR o Q O WASH STATION BUILDING m Z VADATEDATE TPHG BEN TOLUENE ETHYL, TOTAL NITBE TBA j BENZENE XYLENES IL L) L) L L L 3/y2008 NIM.0 ND<0.00161 0.0076 ND<0.0022 0.0045 0.014 ND<0.0061 VE\V -1B VEW -1 DATE TPIIG BFN71FNE TOLUENE Ennl, TOTAL NITBE TBA DISPENSER BENZENE XILENES ISLAND L) L) WO L) 1.) TYP) 3/52008 NID<3.0 IND<D=1 ND<OD43 0.011 ND<0.0061 VEW3A z DATE 7PHG BENZENE TOLE EIlL- TOTAL ATfBE PLANTERX1LFNES TIB,AJBFNE L L L 3/5/20 ND<.0 0.0046 NDm.0022 ND<0.00431 0.014 E%V3B r DATE TPHG BENZINE TOLUENE ETH1L- TOTAL NITBE TBA w BENZENE XILENES VEW -5 VEW -4 0 ! L / 0 IL / 4 / L t HffE W3/52008 4.8 ND<D 0016 00073 *IDS 0022 NDm 0043 094 ND 0061 !.- /'11 IG wJQ fA O Y:\-She Sites \4 \4050 Gosiord \2005 -03- -Low Risk Cosure Request \FGURES (4050)_Low Risk Cosure Request.dwq, CGNCENTRATON MAP, 4/15/2008 10:53:06 AM, RCOH Aticio MP 5500 PCL 6, 1:0996317, 7, 7 VEW -3 PLANTER UST TYP) N W E S VEW -1 A NESTED VAPOR WELL LOCATION AND DESIGNATION TPH -g TOTAL PETROLEUM HYDROCARBONS AS GASOLINE MTBE METHYL TERT -BUTYL ETHER TBA TERT -BUM ALCOHOL A/L MICROGRAMS PER LITER ND< NOT DETECTED ABOVE LIMIT NOTED PPM PARTS PER MILLION F-) E LTA CONSULTANTS SHELL OIL PRODUCTS US SHELL SERVICE STATION BAKERSFIELD, CALIFORNIA FIGURE 3 SOIL VAPOR ANALYTICAL RESULTS 3/5/2008 4050 GOSFORD ROAD BAKERSFIELD, CALIFORNIA 6 :- APPENDIX A CONFIRMATION OF VERBAL APPROVAL: CORRECTIVE ACTION PLAN DELTA, 2005) Delta Environmental Consultants, Inc. Solving environment- related business problems worldwide 911 South Primrose Avenue • Suite K Monrovia, California 91016 USA 626.256.6662 800.477.7411 Fax 626.256.6263 January 24, 2005 DELTA Project No. PA4050G -1 Mr. Howard Wines 111 City of Bakersfield Fire Department Environmental Services 1715 Chester Avenue, 3`d Floor Bakersfield, CA 93301 Re: Confirmation ofVerbal Approval: Corrective Action Plan Texaco Service Station 4050 Gosford Road Bakersfield, California Dear Mr. Wines: www.deltaenv.com Delta Environmental Consultants, Inc. (DELTA), on behalf of Equilon Enterprises LLC dba Shell Oil Products US SHELL), submits this Confirmation of Verbal Approval: Corrective Action Plan for the site referenced above Figure 1). Mr. Howard Wines of the City of Bakersfield Fire Department verbally approved Delta's Corrective Action Plan dated November 11, 2004 during a telephone conversation with Peter Shair of DELTA and Howard Wines on January 24, 2005. DELTA will implement the approved scope of work immediately. . Should you have any questions or comments regarding this letter, please contact Mr. Bradley Clark (DELTA) at 626) 256 -6662 or Mr. Anthony Palagyi (SHELL) at (425) 377 -8530. Sincerely, Delta Environmental Consultants, Inc. Peter Shair Project Geologist Bradley E. Clark, Senior Project Engineer II cc: Mr. Anthony Palagyi, Shell Oil Products US A memberof. Xinogerf =,A,,,ssCe