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WELDON CHURCH RESIDFI TCE Page 1 of 2 <br /> �.r 1.110, <br /> LTCP Checklist ® GFOTRACKER HOME I MANAGE PR I REPORT g I SEARCH I L.R9 <br /> WELDON CHURCH RESIDENCE(70607700214)-MAP THIS SITE OPEN-ELIGIBLE FOR CLOSURE <br /> 104 BEVERLY PL W 9 cANUP OVERSIGHT AGENCIES <br /> TRACY, R 95376 ACTIVITIES REPORT SAN JOAOUIN COUNTY LOP(LEAD)-CASEY-2253 <br /> SAN JOAQUIN COUNTY PUBLIC WEEPAGE CASEWORKER:VI k v-SUPERVISOR:ADRIENNE ELLSAESSER <br /> CENTRAL VALLEY RWOCB(REGION 5S)-CASE e:390292 <br /> VIEW PRINTABLE CASE SUMMARY FOR THIS SITE CASEWORKER:JAMES BARTON-SUPERVISOR:COR/CONDON <br /> CUF Claim 9:8502 CUF Priority Assigned:B CUF Amount Paid:$375,450 <br /> CR Site ID Y:NOT SPECIFIED <br /> THIS PROJECT WAS LAST MODIFIED BY NUEL HENDERSON ON 4/2312015 3:34:09 PM- ISTO <br /> THIS SITE HAS SUBMITTALS.CLICK h=TO OPEN ANEW WINDOW WITH THE SUBMITTAL APPROVAL PAGE FOR THIS SITE. <br /> CLOSURE POLICY THIS VERSION IS FINAL AS OF 412312015 CHECKLIST INITIATED ON 7/29/2013 CLOSURE POLICY HISTOR <br /> General Criteria-The site satisfies the policy general criteria-ci CAR TF�-.s r I�ANSV ERS NO <br /> a.Is the unauthorized release located within the service area of a public waters stem? <br /> Name of Water System: <br /> (•' YES C N <br /> CITY OF TRACY WATER UTILITIES <br /> b.The unauthorized release consists only of petroleum ijafpI. r YES r N <br /> c.The unauthorized("primary")release from the UST system has been stopped. r YES r N <br /> d.Free product has been removed to the maximum extent practicable finf). FP Not Encountered r YES I N <br /> e.A conceptual site model that assesses the nature,extent,and mobility of the release has been developed ItfgI- (• YES r N <br /> f. ary source has been removed to the extent practicable <br /> Impediment to Removing Secondary Source(Check all that Apply): <br /> F Remediation Has Not Been Attempted <br /> F Remediation Was Designed Incorrectly <br /> F Remediatbn Was Shut OH Prematurely r YES (' N <br /> F Poor Remediation O&M <br /> r'Other - <br /> Remediation not completed: vapor in cc 1 space mitigated, but not ceaediated yet. <br /> g.Soil or groundwater has been tested for MTBE and results reported in accordance with Health and Safety Code Section 25296.15. r Not Required(• YES r N <br /> h.Does a nuisance exist,as defined by Water Code section 13050. r YES r N <br /> 1.Media-Specific Criteria:Groundwater-The contaminant plume that exceeds water quality objectives is stable or decreasing in areal extent,and meets all of the additional YES <br /> characteristics of one of the five classes of sites listed below.-CLEAR secnoN ANswERs <br /> EXEMPTION-Soil Only Case(Release has nol Affected Groundwater-If,)[o) r YES r N <br /> Does the site meet any of the Groundwater specific criteria scenarios? (• YES r N <br /> 1.2-The contaminant plume that exceeds water quality objectives is<250 feet in length.There is no free product.The nearest existing water supply well or surface water body is>1,000 R YES r N <br /> feet from the defined plume boundary.The dissolved concentration of benzene is-3,000 Ng/L.The dissolved concentration of MTBE is-1,000 pg/L <br /> 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-specific conditions satisfy NO <br /> items 2a,2b,or 2c-CLEAR secT,i,.N ANS MRS <br /> EXEMPTION-Active Commercial Petroleum Fueling Facility r YES 0 N <br /> Does the site meet any of the Petroleum Vapor Intrusion to Indoor Air specific criteria scenarios? r YES 0 N <br /> ADDITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria: <br /> Soil Gas Samples: <br /> I-No Soil Gas Samples r Taken Incorrectly <br /> Exposure Type: <br /> r Residential r Commercial <br /> Free Product: <br /> r In Groundwater r In Soil r Unknown <br /> TPH in the Bioattenuation Zone <br /> Ia>_100 mg/kg r Unknown r Soil samples not taken at two depths within 5 ft.zone(only for Scenario 4 with BioZone) <br /> Bioattenuation Zone Thickness <br /> r<5 Feet(No BioZone) z 5 Feet and<10 Feet r>_10 Feet and<30 Feet r t 30 Feet r 30ft BioZone Compromised TPH>100mg/kg r Unknown <br /> 02 Data in Bioattenuation Zone: <br /> R No 02 Data r 02<4% r'02 z 40% <br /> Benzene in Groundwater: <br /> r t 100 NgA and<1,000 NgA r z 1,000 Ng/I r Unknown <br /> Soil Gas Benzene <br /> (`z 85 Ng/m3 and<280 pg/m3 r>_280 pg/m3 and<85,000 pg/m3 r s 85,000{Ig/m3 and<280,000 pg/m3 r>_280,000 Ng/m3 r Unknown <br /> Soil Gas EthylBenzene <br /> r>_1,100 pg/m3 and<3,600 Ng/m3 r>_3,600 pg/m3 and<1,100,000 Ng/m3 r>_1,100,000 Ng m3 and<3,600,000 Ng/m3 r z 3,600,000 pg m3 r Unknown <br /> Soil Gas Naphthalene: <br /> r t 93 pg/m3 and<310 Nglm3 r s 310 Ng/m3 and<93,000 Ilg/m3 r z 93,000 pglm3 and<310,000 Ng/m3 r z 310,000 Ngtm3 (' Unknown <br /> 3.Media Specific Criteria:Direct Contact and Outdoor Air Exposure-The site is considered low-threat for direct contact and outdoor air exposure if it meets 1,2,or 3 below. NO <br /> -CLEAR SECTION ANSWERS <br /> EXEMPTION-The upper 10 feet of soil is free of petroleum contamination r YES r N <br /> Does the site meet any of the Direct Contact and Outdoor Air Exposure criteria scenarios? r YES r N <br /> ADDITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria: <br /> Exposure Type: <br /> https://geotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=TO... 4/23/2015 <br />