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CHASE CHEVROLET i Page 1 of 2 <br /> Path to Closure Plan GEOTRACNER HOME MARA E PR0. LTR REPORTS SAF- CAH LO U <br /> OPEN.SnEASSESSMEW <br /> [HASE CHEVROLET(70607700446)-MAP 1HI55RE <br /> VAN BUREN STN ere) '^e HTAVI`( B <br /> ACTIVITIES REPORT SANJOADUPKER: NGELICLEAD) VAL e:7511 <br /> CKTON CA 95203 CASEWORKER:ANGELICA SANDOVAL MAFIN-SUPERNSOR:ADRIENNE ELL8AES8Eft <br /> 390561 <br /> Jo OUIN COUNTY PBI BPA LEN CASENORI(ERALLEY RJAMFStfleRTONGION 55SUPEFVISOR:LORI LONDON <br /> PRIN LECASESU MARY OR TH SITE CUP Chum d:82M OUF Prki Assigned:C CUP Ameum Iiinu-2180$ <br /> THIS PROJECT WAS LAST MODIFlED BV uuFr upER50N ON 112120133:33:32 PM-HSSMSY <br /> THIS SITE HAS SUBMITTALS.CLICK MM TO OPEN A New WINDOW WRH THE SUBMITTAL APPROVAL PAGE FOR THIS SITE. <br /> h to Closure Plan-FY 12113 THIS VERSION IS FINAL AS OF 112120f3 PATH CLOSURE HISTORY a /RESET PATH TOLLOSURE PLAN <br /> IMPEDIMENT 1: <br /> General Cdteda E:A conceptual site model that assesses the nature,extent and mobllity of the release t <br /> ral Impediment-un:o <br /> has NOT been tleveloped - Inading _ __TE RESOLVED <br /> Step to Resolve lmpetliment 1-Step 1:-DELETE STEP COMPLETION DATE <br /> m <br /> No post-remediation (excavation antl SvC) data has been obtained to demutrate effectiveness or impact PROJECTED DATE ACB <br /> of the ranediation efforts. Prior to remediation contami ant w centratlon in tloengretlient valla HN-19 <br /> and W-24 were ND wells, but M-15 had some cantaminants and concentrations were increasing in NN-6 and <br /> uafabl r_nl nmr A.vita.luc ek[ na[+an ic.ne. nrv.fu nva fhn..nWw_Ican laaan�_..' <br /> Nw-zz__ennne+c+ve a[_sn. ADD ADO TONAL STEP <br /> IMPEDIMENT 2: <br /> Meda-S IcCriteria:Groundwater:The contaminant plume that exceeds water quality objectives is E Procedural lmpetliment-IbEo <br /> NOT stable or decreasing in areal extent,and does NOT meet all of the additional characteristics of one of [inadequate Funding <br /> the five classes of sites. DAM a S o Yeo <br /> Conditions that do not meet the policy criteria: <br /> • Plume Length(That Exceeds Water Quality Objectives):2 250 Feet and<1,000 Feet <br /> • Plume is Stable or Decreasing In AREAL Extent:Unknown <br /> • For sites with free product,the Plume Has Been Stable Or Decreasing for 5-Years(info):Unknown <br /> • Benzene Concentration:2 3,000 pgll <br /> • MTBE Concentration:Unknown <br /> • Nearest Supply Well(From Plume Boundary): ,250 Feet and 5 1,000 Feet <br /> • Nearest Surface Water Body(From Plume Boundary):5260 Feet <br /> Step to Resolve Impediment 2-Step 1:-DPl COMPLETION DATE <br /> The RP will be directed to provide current data for PurMer evaluation and characterization of the site, pagtECTED DATE ACTUAL DATE <br /> bovever as described above, the PP, the City of Stockton, does not have sufficient Puntling Co procetle <br /> with this investigation. <br /> ADD ADDITONAL STEP <br /> IMPEDIMENT 3: <br /> Med' Specific Criteria:Petroleum Vapor Intrusion to Indoor Air,The site Is NOT considered low-threat for E Procedural Impediment-Ixro <br /> the vapor-intrusion-to-air pathway and site-specific conditions do NOT satisfy Items 2a,2b,or 2c. Inadequate Funding <br /> DATE RESOLVED <br /> Conditions that do not meet the policy criteria: <br /> • Soil Gas Samples:No Soil Gas Samples -- <br /> • Exposure Type:Commercial <br /> • TPH in the Bioaftenuation Zone:2100 ni <br /> • Bioaftenuation Zone Thickness:26 Feet and<10 Feet <br /> • 02 Data in Sioattenuation Zone:No Of Data <br /> • Benzene in Groundwater:21,000 4911 <br /> • Soil Gas Benzene:Unknown <br /> • Soil Gas EthylBenzene:Unknown <br /> • Soil Gas Naphthalene:Unknown <br /> Rapid Resolve Impediment 3-Step 1:. P COMPLETION DATE <br /> The RP will be directed to provide current data for further evaluation and characterization of this <br /> the City of Stockton, does not have sufficient funding PROJECTED AC LDA <br /> hazard/risk, however as described above, the RP, <br /> to precede with this investigation. <br /> - -- - - - - ADDADDITIONALSTEP <br /> IMPEDIMENT 4: <br /> Merits Spec-re Cr'ter'a Direct Conte t and O trio rAir Exposure:The site is NOT considered low-threatE�Iffnadequate <br /> roceduml lmpetliment-INFo <br /> for direct contact and outtloor air exposure as rt does NOT meet 1,2,or 3. Funding <br /> -DATFRESO 0 <br /> Conditions that do not meet the policy criteria: _ <br /> • Exposure Type:Commercial <br /> • Petroleum Constituents in Soil:aS Feet bgs and 510 Feet bgs <br /> • Soil Concentrations of Benzene:Unknown <br /> • Soil Concentrations of EthylBenzene:Unknown <br /> • Soil Concentrations of Naphthalene:Unknown <br /> • Soil Concentrations of PAH:Unknown <br /> • Area of Impacted Soil:Unknown <br /> Step to Resolve Impediment 4-Step 1:.DELEM WTEP COMPLETION GATE <br /> https:Hgeotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=T... 11/21/2013 <br />