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OCAMPO PROPERTY Page 1 of 2 ,i Path to Closure Plan Go GEOTRACKER HOME I MANAGE PROJECTS I REPORTS ISEARCH I LQ<i.QLLI OCAMPO PROPERTY(70607700149)-MAP THIS Sere pPEN.REMEDranoN 821 WILSON WAYS CLEANUP OVERSIGHT AGENCIES STOCKTON,CA 95210 ACTIVITIES REPORT SAN JOAQUIN COUNTY LOP/LEAD/-CASE 12241 SAN JOAQUIN COUNTY PUBLIC VJEBPAGE CASEWORKER:ANGELICA SANDOVAL MARIN-SUPERWSOR:ADRIENNEELLSAESSER WEWPR(WABLE CASE SUMINARYCENTRAL VALLEY RWOC9(REGION 5S)-CASE s:390215 CASEWORKER:JAMES EARTON-SUPERVISOR:CORI CONDON OUFCIa1m Y:19915 CUF Priority Assigned:C OUFAmoum PeM:SM530] THIS PROJECT WAS LAST MODIFIED BY NUEL HENDERSONON Wt&20141'.59:09 PM-LUBIDHY THIS SIM WAS SUBMITTALS.CLICK HERE TO OPEN A NEW WINDOW WITH THE SUBMITTAL APPROVAL PAGE FOR This SITE. Path to Closure Plan THIS VERSION IS FINAL AS OF IV192014 PATH TO CLOSURE HISTORY CLEAR I RESET PATH TO CLOSURE PIAN IMPEDIMENT 1: General Criteria E:A conceptual site model that assesses the nature,extent,and mobility of the release r Procedural Impediment- has NOT been developed Inadequate Funding OATERESO St te,Passel.Irnpedinseet 1.Step 1:- COMPLETON DATE Extent of shall,, implored groundwater not delineated east of most impacted monitoring well HR-5; need work plan submi[[etl to covple[e lateral delineation of impacted groundwater [ova[tl the east. PRPR JACTUAL DATE IF 1/1512015 i 6 to Resolve Impediment t-Ste 2:- P bmit CSM or missing components is of a CSN t, the Pro. COMPLETION DATE D DA is, ACTUA 3(16"2015 — ADOADDITONALSTEP IMPEDIMENT 2. General Criteria F.Secondary source has NOT been removed to the extent practicable r Procedural Impediment-plPy S to Resolvelm diment2-St 1:-DELETESTEP As part of a corrective Action Plan (CAP) this site i rrently under remediation with soil —per COMPLETION DATE extraction and in-situ airrparging. The system recently went on line inJuly of 2013 and is proposed to 1�pCNrA�� extend 12 to le months. 1/1`J2015 AODADDMONALSTEP IMPEDIMENT 3: Media-SDecific Criteria:Groundwater.The contaminant plume that exceeds Water quality objectives is r Procedure]Impediment-NFO NOT stable or decreasing in areal extent and does NOT meet all of the additional characteristics of one of the five classes of sites. Conditions that do not meet the policy criteria: • Plume Length(That Exceeds Water Quality Objectives):Unknown • Plume is Stable or Decreasing in AREAL Extent:Unknown • Benzene Concentration:>3,000 pg/1 • Nearest Supply Well(From Plume Boundary):Unknown • Nearest Surface Water Body(From Plume Boundary):>260 Feet and 5 1,000 Feet W Resolve Inessedinnant 3.then 1:- A sensitive Recept,r survey has been diretted, a Report still needs to be submitted to the exp. _ ___ COMPLETION DATE 1/1512015 ADO ADDITIONAL STEP IMPEDIMENT 4: Media Specific Criteria.Petroleum Vapor Intrusion to Indoor Air:The site is NOT considered low-threat for r Procedural Impediment-M the vapor-intrusion-to-air pathway and site-specific conditions do NOT satisfy Items 2a,21,or 2c. Conditions that do not meet the policy criteria: • Bioattenuation Zone Thickness:2 10 Feet and<30 Feet • 02 Data in Bioattenuation Zone:No 02 Data • Benzene in Groundwater:>1,000 pg/I • Soil Gas Benzene:Unknown • Soil Gas EthylBenzene:Unknown • Soil Gas Naphthalene:Unknown Step to Resolve In indent 4-AMID 1:- Continue SVE/IM remediation to pensantently reduce dissolved benzene concentrations below level of COMPLETION DATE concern for vapor intrusion issue or exposure to outdoor air concern. 1/192015 I ADDADDmoNALSTEP REOUI REM ENTS ALONG PATH TO CLOSURE DAreCDENTFRIED Y RP NODATE TION WASWAS DAM DISPOSAL RE$RE TIRING USIE SITEECCLLTOESURREE PARTPTON DES RUCTION WELLII I i https:Hgeotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=TO... 6/19/2014