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CHEVRON #9-8632 Page 1 of 2 N LTCP Checklist AO GEOTRACKER HOME I MANAGEPROJECTS I REPORTS I SEARCH I LOGOLIT 1p CHEVRON #9-8632 (TO607700670) - MAP THIS SIE OPEN - SITE ASSESSMENT 575 GRANT LINE RDW CLEANUP OVERSIGHT AGENCIES TRACY , CA 95376 ACTIVITIES REPORT SAN JOAGUIN COUNT' LOP (LEAD) - CASE W. 1408 SAN JOAQUIN COUNTY PUBLIC WEBPAGE CASEWORKER: VTIJMccedne ERNSOR: ADRIENNEELLSAESSER VIEWPRINTABLE CASE SUMMARY FOR THIS SRE CENTRAL VALLEY RWOCe (REGION 5S) CASE 8' 300642 CASEWORKER: JAMES RARTON - SUPERVISOR: CORI CONDON CUP Claim Is 8662 CUF Parody Assigned: D CUP Amount Paid! CR Site ID A: NOT SPECIFIED THIS PROJECT WAS LAST MODIFIED BY NUEL NENDERSON ON 11/13120141:38:39 PM - HISTORY THIS SITE HAS SUBMITTALS. CLICK i M TO OPEN A NEW WINDOW WITH THE SUBMITTAL APPROVAL PAGE FOR THIS SITE. CLOSURE POLICY THIS VERSION IS FINAL AS OF 1111312014 CHECKLISTININATEDONa2442013 CLOSUREPODCY HISTOar General Criteria - The site satisfies the policy general criteria - QLE a MOTION ANSWERS ENO a. Is the unauthorized release located within the service area of a public waters stem? Name of Water System : 101yofTniq r YES r NO It. The unauthorized release consists only of petroleumiLl. r VES r NO c. The unauthorized ("primary) release from the UST system has been stopped. r VES f NO it. Free product has been removed to me maximum extent practicableiLl. f• FP Not Encountered r YES (NO a. A Conceptual site model that assesses the nature, extent, and mobility of the release has been developed iinfol. r YES r NO t Secondary source has been removed to the extent practicable firlig Impediment to Removing Secondary Source (Check all that Apply): F Remediation Has Not Been Attempted F Sternutation Was Designed incorrectly f YES r NO F Remediation Was Shut Off Prematurely F- Poor Remetltation 08M Faber - 111muted soil excavatio g. Soil or groundwater has been tested for MTBE and results reported in accordance with Health and Safety Code Section f Not Required r VES r NO 25296.15, quire h. Does a nuisance exist, as claimed by Water Code section 13050. f VES r NO 1 . Media-Specific Criteria: Groundwater - The contaminant plume that exceeds water quality objectives is stable ordecreasing in areal extent, and YES meets all of the additional characteristics of one of the five classes ofsites listed below. - CLEAR SECTION ANSWERS EXEMPTION - Sol] Only Case (Release has figt Affected Groundwater - Info) f YES r NO Does the site meet any of the Groundwater specific criteria scenarios? IF YES r NO 1.1 - The Contaminant plume that exceeds water quality objectives is <100 feet in length. There Is no free product. The nearest existing water supply well or surface water body is >250 feet from the defined plume boundary. rYES r NO 2. Media Specific Criteria: Petroleum Vapor Intrusion to Indoor Air - The site is considered low-threat forthe vapor-intnlsion-to-airpethway ifsite- specific conditions satislyifems 2a, 2b, or 2c - cLFAR s Y EXEMPTION - Active Commercial Petroleum Fueling Facility r YES r No Does the site meet any of the Petroleum Vapor Intrusion to Indoor Air specific criteria scenarios . r' YES r NO 2b - Petroleum Vapor Intrusion to Indoor Air - A sBe-specific risk assessment for the vapor Intrusion pathway has been prepared that demonstrates human r YES r NO health is protected to the satisfaction of the regulatory agency. 3. Media Specific Criteria: Direct Contact and Outdoor Air Exposure - The site is considered/ow-threat for direct contact and outdoor airexposure NO if it meets 1, 2, or below. - CLEAR SECTION ANSWER EXEMPTION - The upper 10 feet of soil is free of petroleum contamination / YES r NO Does the site meet any of the Direct Contact and Outdoor Air Exposure criteria scenarios? r YES r NO ADDITIONAL QUESTIONS - Please indicate only those conditions that do not meet the policy criteria: Exposure Type : F* Residential r Commercial r Utility Worker Petroleum Constituents in Soil : r < 5 Feet bgs f >5 Feet bgs and x10 Feet bgs f Unknown Soil Concentrations of Benzene : r > 1 .9milling and s2.8mg/kg r > 2.8mg/kgand x8.2miyu r > B2mgikg and < 12mglkg. r > 12mglkg and < 14moral r > 14mgikg C' Unknown Soil Concentrations of EthylBenzene : r > 21 mg/kg and 532 mg/kg r > 32 mg/kg and x 89 mg/kg r > 89 mg/kg and < 134 mg/kg r > 134 mg/kg and <_ 314 mgikg r > 314 mglkg r Unknown Soil Concentrations of Naphthalene : C > 9.7 mglkg and 5 45 mg/kg r > 45 mgikg and < 219 mgikg r > 219 mg/kg r Unknown Soil Concentrations of PAH : C > DOSS mg/kg and x 0,68 mg/kg r > 0.68 mgikg and x 4.5 mglkg f > 4.5 mgikg Or Unknown Area of Impacted Sail C' Area of Impacted Soil > 82 by 82 Feet r Unknown https://geotracker.waterboards.ca.gov/regulators/screens/closure_tolicy.asp?global_id=T. . . 11 /13/2014