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BANK OF THE WEST(F —RMER SHELL) Page 1 of 2 <br /> LTCP Checklist - Lo GEOTRACKER HOME I MANAC,'E Pf QJECTS I REPORTS I SEARCH I 12G <br /> OUT <br /> OF THE WEST(FORMER SHELL)(T0607700721)-MAP THIS SIT[- OPEN-ELIGIBLE FOR CLOSURE <br /> 1267 COUNTRY CLUB BLVD CLEANUP OVERSIGHT AGENCIES <br /> STOCKTON,CA 95201 ACTIVITIES REPORT SAN JOAQUIN COUNTY LOP(LEAD)-CASE#:505602 <br /> SAN JOAQUIN COUNTY PUBLIC WEBPAGE CASEWORKER:LISA MEDINA - SUPERVISOR:ADRIENNE ELLSAESSER <br /> VIEW PRINTABLE CASE SUMMARY FOR THIS SITE CENTRAL VALLEY RWQCB(REGION 5S)-CASE#:390895 <br /> CASEWORKER:JAMES BARTON - SUPERVISOR:BRIAN NEWMAN <br /> CUF Claim#:18070 CUF Priority Assigned:D CUF Amount Paid:§0 <br /> THIS PROJECT WAS LAST MODIFIED BY LISA MEDINA ON 625/2013 11:14:18 AM-HISTORY <br /> THIS SITE HAS SUBMITTALS.CLICK HERE TO OPEN A NEW WINDOW WITH THE SUBMITTAL APPROVAL PAGE FOR THIS SITE. <br /> CLOSURE POLICY THIS VERSION IS FINAL AS OF 6114/2013 CHECKLIST INITIATED ON 101232012 CLOSURE POLICY HISTORY <br /> General Criteria- The site satisfies the policy general criteria-cLEAR sEcTION ANSWERS Yes <br /> a.Is the unauthorized release located within the service area of a public waters stem? <br /> Name of Water System: California Water Service r' YES NO <br /> b.The unauthorized release consists only of petroleum info. f' YES C NO <br /> c.The unauthorized("primary")release from the UST system has been stopped. I' YES C NO <br /> d.Free product has been removed to the maximum extent practicable Jj= FP Not Encountered C YES C NO <br /> e.A conceptual site model that assesses the nature,extent,and mobility of the release has been developed LtLqj. G YES C NO <br /> f.Secondary source has been removed to the extent practicable info. /' YES NO <br /> g.Soil or groundwater has been tested for MTBE and results reported in accordance with Health and Safety Code Section <br /> . O Not Required r' YES NO <br /> 25296.15 <br /> In.Does a nuisance exist,as defined by Water Code section 13050. C YES r' NO <br /> 1.Media-Specific Criteria:Groundwater- The contaminant plume that exceeds water quality objectives is stable or <br /> decreasing in areal extent, and meets all of the additional characteristics of one of the five classes of sites listed below. -—CLEAR YES <br /> SECTION ANSWERS <br /> EXEMPTION-Soil Only Case(Release has Dol Affected Groundwater- rrl&) I' YES r NO <br /> Does the site meet any of the Groundwater specific criteria scenarios? r' YES C NO <br /> 1.4-The contaminant plume that exceeds water quality objectives is-1,000 feet in length.There is no free product.The nearest existrV waler supply well or (: YES C NO <br /> surface water body is>1,000 feet from the defined plume boundary.The dissolved concentrations of benzene and MTBE are both<1,000 Pon- <br /> 2.Media Specific Criteria: Petroleum Vapor Intrusion to Indoor Air- The site is considered low-threat for the vapor- NO <br /> intrusion-to-air pathway if site-specific conditions satisfy items 2a, 2b, or 2c-CLEAR sEcTioN ANSWERS <br /> EXEMPTION-Active Commercial Petroleum Fueling Facility C YES R NO <br /> Does the site meet any of the Petroleum Vapor Intrusion to Indoor Air specific criteria scenarios? C YES NO <br /> ADDITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria: <br /> Soil Gas Samples: <br /> C No Soil Gas Samples C Taken Incorrectly <br /> Exposure Type: <br /> C Residential C Commercial <br /> Free Product: <br /> C In Groundwater C In Soil C Unknown <br /> TPH in the Bloattenuation Zone: <br /> G t 100 mg/kg C Unknown C Soil samples not taken at two depths within 5 ft.zone(only for Scenario 4 with BioZone) <br /> Bloattenuation Zone Thickness: <br /> C<5 Feet(No BioZone) C>_5 Feet and<10 Feet C z 10 Feet and<30 Feet C>_30 Feet C 30ft BioZone Compromised TPH>100mg/kg C Unknown <br /> 02 Data in Bioattenuation Zone <br /> r No 02 Data C 02<4% C 02 t 4% <br /> Benzene in Groundwater: <br /> R >_100 pg/l and<1.000 Ng/I C t 1,000 Ng/I C Unknown <br /> Soil Gas Benzene <br /> C t 85 Ng/m3 and<280 pg/m3 C>_280 pg/m3 and<85,000 Ng/m3 C>_85,000 Ng/m3 and<280,000 Nglm3 C t 280,000 pg/m3 C Unknown <br /> Soil Gas EthylBenzene: <br /> C t 1.100 pg/m'and<3,600 Ng/m3 C t 3,600 pg/m3 and<1,100,000 Nglm3 C?1,100,000 pg/m3 and<3,600,000 pg/m3 C t 3,600,000 pg/m3 C Unknown <br /> Soil Gas Naphthalene: <br /> C t 93 Ng/m3 and<310 pglm3 C t 310 pglm3 and<93,000 Ng/m3 C>_93,000 pg/m3 and<310,000 pg/m3 C t 310,000 pg/m3 r Unknown <br /> 3.Media Specific Criteria:Direct Contact and Outdoor Air Exposure- The site is considered low-threat fordirect contact YES <br /> and outdoor air exposure if it meets 1, 2, or 3 below. -CLEAR SECTION ANSWERS <br /> EXEMPTION-The upper 10 feet of soil is free of petroleum contamination C YES G NO <br /> Does the site meet any of the Direct Contact and Outdoor Air Exposure criteria scenarios? r' YES C NO <br /> https:Hgeotracker.waterboards.ca.gov/regulators/screens/c losure_pol icy.asp... 6/25/2013 <br />