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ARCO #0595 Page 1 of 2 LTCP Checklist — Go TRr�F, ALF OME I MANAGE PROJECTS I REPgffifr I DI I LQ9M ARCO#0696(70607700319)-MAP THIS SITE QPEN-SREASSESSWW 6100 HWY 99 N FRONTAGE ROADACTIVITIES REPORT CLEANUP OVERSGHT AGENCIES STOCKTON,CA 95212 SAN JOAQUIN COUNTY LOP(LEAD)-CASE is 0707 SAN JOAQUIN COUNTY PUBLIC WEBPAGE CASEWORKER:an.5 I e=Ail NDOVAL MAMN-SUPERVISOR:ADRIENNE ELLSAESSER CENTRAL VALLEY RADICE(REGION 5S)-CASE a:300411 ^A_ E RTHI CASEWORKER: JAMES BARTON-SUPERVISOR:LORI CONDON CR Site to A.NOT SPECIR ED THIS PROJECT WAS LAST MODIFIED BY w_4F�NAwroRSONON 4113201511:43:37 AM-tl6am THIS SITE HAS SUBMITTALS.CUCK JIM TO OPEN A NEW WINDOW WITH THE SUBMITTAL APPROVAL PAGE FoRt THIS SITE. CLOSURE POLICY THIS VERSION IS FINAL AS OF 4/1312015 CHECKLIST IAMATED QV 1/91!1013 CLOBUREMLMYNMTORY General Criteria-The site satisfies the poficy general criteria-cl PAR SECTION ANsy ERs NO a.Is the unauaror¢ed release located within the service area Of a public water system? r YES Is NO b.The unauthorized release consists only of petroleum fjD(41. IS YES r NO c.The unauthorized('primary)release from the UST system has been stopped IS YES r NO d.Free product has been removed to the maximum extent practicable JbfM. r FP Not Encountered r YES r NO e.A Conceptual site model that assesses the nature,extent,and mobility of the release has been developed liaw r YES r NO f Secondary source has been removed to the extent practicable Ili= IS YES r NO g.Soil or groundwater has been tested for MTBE and results reported in accordance with Health and Safety Code Section C Not Required r YES r NO 25296.15. h.Does a nuisance exist,as defined by Water Code section 13050. r YES r NO 1.MediaSper:ific Criteria:Groundwater-The contaminant plume that exceeds waterqualily,objectives is stable or decreasing in ansa/extent,and F NO meets all of the additional characteristics of one of the five classes of sites listed below.-c,PSR s TION AN= R= EXEMPTION-Soil Only Cam(Release has=ABacted Groundwater-Info) C YES IS NO Doss the site meet any of the Groundwater specific criteria scenarios? r YES r NO ADDITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria: Plume Length(That Exceeds Water Quality Objectives): r t 100 Feet and<250 Feet r i 250 Feet and<1,000 Fast r a 1,000 Feel C Unknown Plume is Stable or Decreasing in AREA Extant: C No r Unknown Free Product In Groundwater: C Yes C No r Unknown Free Product Has Been Removed to the Maximum Extent Practicable r No C Unknown For sites with free product,the Plume Has Been Stable or Decreasing for 5-Years(info) r No C Unknown For sites with free product,owner Willing to Accept a Land Use Restriction(if required) r No r Unknown Free Product Extends Of site: C Yes C Unknown Benzene Concentration r a 1,000 pg/I and<3,000 poll r t 3,000 poll C Unknown MTBE Concentration: C z 1,000 pgll C Unknown Nearest Supply Well(From Plume Boundary) is 5 250 Feet r >250 Feet and 51,000 Feet C Unknown Nearest Surface Water Body(From Plume Boundary): r 5 250 Feet C>250 Feet and 51,000 Feet C Unknown 2.Media Specific Criteria:Petroleum Vapor Intrusion to Indoor Air-The site is Considered low-threat for the vapor-in0usion-to-airpathway if site- NO specific conditions satisfy items SWERS 2a,2b,or 2C-2&6 W&noRAN EXEMPTION-Active Commercial Petroleum Fueling Facility r YES C NO Does the site meet any of the Petroleum Vapor Intrusion to Indoor Air specific criteria scenarios? C YES r NO ADDITONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria; Soil Gas Samples C No Soil Gas Samples C Taken Incorrectly Exposure Type: r Residential C Cwnmercial Free Product: C In Groundwater r In Soil C Unknown TPH in the Bloanenuation Zone: r t 100 mglkg C Unknown r Soil Samples not taken at two depths within 5 fl zone(Only for Scenario 4 with BioZone) Bioanenuation Zone Thickness: https:Hgeotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=TO... 4/13/2015