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an- kNOWLES STATION Page 1 of 2 LTCP Checklist - ® p GEOTRACKER HOME I MANAGE PROJECTS I REPORTS I SEARCH I LOGOUT KNOWLES STATION(T0607700078)-MAP THIS SITE OPEN-REMEDIATION 1140 HAMMER LN W CLEANUP OVERSIGHT AGENCIES 1140 HAMMER ,CA 95209 ACTIVITIES REPORT SAN JOAQUIN COUNTY LOP(LEAD)-CASE#r 1124 CASEWORKER:HARL/N KNOLL-SUPERVISOR:ADRIENNE ELLSAESSER SAN JOAQUIN COUNTY PUBLIC VJEBPAGE CENTRAL VALLEY RWQCB(REGION 5S)-CASE#:390107 VIEW PRINTABLE CASE SUMMARY FOR THIS SITE CASEWORKER:JAMES BAR TON-SUPERVISOR:BRIAN NEWMAN CUF Claim#:854 CUF Priority Assigned:B CUF Amount Paid: 3S 10.509 THIS PROJECT WAS LAST MODIFIED BY NUEL HENDERSON ON 6/28/2013 3:54.00 PM-h5I.QRY THIS SITE HAS SUBMITTALS.CLICK HERE TO OPEN A NEW WINDOW WITH THE SUBMITTAL APPROVAL PAGE FOR THIS SITE. CLOSURE POLICY THIS VERSION IS IN PROGRESS AS OF 6/28/2013 CHECKLIST INITIATED ON 5/29/2013 CLOSURE POLICY HISTORY General Criteria-The site satisfies the policy general cfiteda-CLEAR SECTION ANSWERS NO a.Is the unauthorized release located within the service area of a public waters stem? Name of Water System: ISlocklon East Water Dist r' YES r NO b.The unauthorized release consists only of petroleum info. r' YES r NO c-The unauthorized("primary')release from the UST system has been stopped. G YES r NO d.Free product has been removed to the maximum extent practicable info. 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 developediI r1fo1. r YES NO f.S ondary source has been removed to the extent practicable info I. Impediment to Removing Secondary Source(Check all that Apply): F Remediation Has Not Been Attempted F Remediation Was Designed Incorrectly C YES r' NO F Remediation Was Shut Off Prematurely r Poor Remediation O&M F Other - 11SCO ongoing and incomplete g.Soil or groundwater has been tested for MTBE and results reported in accordance with Health and Safety Code Section 25296.15. CNot Required (' YES r NO h.Does a nuisance exist,as defined by Water Code section 13050- r YES F NO 1.Media-Specific Criteria:Groundwater-The contaminant plume that exceeds water quality objecfives is stable or decreasing in areal extent,and YES meets all of the additional characteristics of one of the rive classes of sites listed below.-CLEAR SECTION ANSWERs EXEMPTION-Soil Only Case(Release has not Affected Groundwater-Info) r YES (-_ NO Does the site meet any of the Groundwater specific criteria scenarios? r' 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 G YES NO surface water body is>250 feet from the defined plume boundary. 2.Media Specific Criteria:Petroleum Vapor Intrusion to Indoor Air-The site is considered low-threat for the vapor-intrusion-to-air pathway if site- NO specific conditions satisfy items 2a,2b,or 2c-CLEAR SECTION ANSWERS EXEMPTION-Active Commercial Petroleum Fueling Facility r YES 6 NO Does the site meet any of the Petroleum Vapor Intrusion to Indoor Air specific criteria scenarios? r YES /' NO ADDITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria: Soil Gas Samples: C No Soil Gas Samples r Taken Incorrectly Exposure Type: r Residential r Commercial Free Product: C In Groundwater r In Soil r Unknown TPH in the Bioattenuation Zone: l'i 100 mg/kg r Unknown r Soil samples not taken at two depths within 5 ft.zone(only for Scenario 4 with BioZone) Bioattenuation Zone Thickness: r" <5 Feet(No BioZone) f' a 5 Feet and<10 Feet r a 10 Feet and<30 Feet r a 30 Feet r 30ft BioZone Compromised TPH>100mg/kg r Unknown 02 Data in Bioattenuation Zone: r' No 02 Data r 02<4% (_ O 2 a 4% Benzene in Groundwater: r _>100 pg/I and<1,000 pg/I z 1,000 pg/1 r Unknown Soil Gas Benzene: r z 85 pg/m3 and<280 pg/m3 r a 280 pg/m3 and<85,000 pg/m3 r>_85,000 pg/m3 and<280,000 pg/m3 r >_280,000 pg/m3 r' Unknown Soil Gas EthylBenzene: r>_1,100 pg/m3 and<3.600 pg/m3 r >_3,600 pg/m3 and<1,100,000 pg/m3 r z 1,100,000 pg/m3 and<3,600,000 pg/m3 r>_3,600,000 pg/m3 t•Unknown Soil Gas Naphthalene: r a 93 pg/m3 and<310 pg/m3 r s 310 Ng/m3 and<93,000 pg/m3 r a 93,000 pg/m3 and<310,000 pg/m3 r a 310,000 pg/m3 ('Unknown 3.Media Specific Criteria:Direct Contact and Outdoor Air Exposure-The site is considered low-threat for direct contact and outdoor air exposure YES if it meets 1,2,or 3 below.-CLEAR SECTION ANSWERS https:Hgeotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=TO... 6/28/2013