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WELDON CHURCH RESIDT"TCE Page 1 of 2 <br /> Path to Closure Plan GO GEOTRACKER HOME I MANAGE PROJECTS I REPORTS I SEARCH I LOGOUT <br /> WELDON CHURCH RESIDENCE(T0607700214)-MAP THIS SITE OPEN-REMEDIATION <br /> 104 BEVERLY PL W CLEANUP OVERSIGHT AGENCIES <br /> TRACY,CA 95376 ACTIVITIES REPORT SAN JOAQUINCOUNTY LOP(LEAD)-CASE#:2253 <br /> SAN JOAQUIN COUNTY PUBLIC WEBPAGE CASEWORKER:VICKI MCCARTNEY-SUPERVISOR.ADRIENNE ELLSAESSER <br /> VIEW PRINTABLE CASE SUMMARY FOR THIS SITE CENTRAL VALLEY RWOCB(REGION 5S)-CASE#.390292 <br /> CASEWORKER,JAMES BARTON-SUPERVISOR:CORI CONDON <br /> CUF Claim#:8502 CUF Priority Assigned:B CUF Amount Paid:5363 nae <br /> THIS PROJECT WAS LAST MODIFIED BY NUEL HENDERSONON 6/27/2014 10:41:48 AM-HISTORY <br /> THIS SITE HAS SUBMITTALS.CLICK HERE TO OPEN A NEW WINDOW WITH THE SUBMITTAL APPROVAL PAGE FOR THIS SITE. <br /> CLOSURE POLICY THIS VERSION IS FINAL AS OF 6/27/2014 CHECKLIST/NMATED ON 7129/2013 CLOSURE POLICY HISTORY <br /> General Criteria-The site satisfies the policy general criteria-cLEAR SECTION ANSWERS NO <br /> a.Is the unauthorized release located within the service area of a public waters stem? <br /> Name of Water System: ICITY OF TRACY WATER UTILITIES 0 YES r NO <br /> b.The unauthorized release consists only of petroleum irlfo. YES r NO <br /> c.The unauthorized("primary")release from the UST system has been stopped. r YES NO <br /> d.Free product has been removed to the maximum extent practicable jtfpl. I' FP Not Encountered r YES NO <br /> e.A conceptual site model that assesses the nature,extent,and mobility of the release has been developed Jj0fPJ. 0 YES r NO <br /> f.S condary source has been removed to the extent Dracticable(info. <br /> Impediment to Removing Secondary Source(Check all that Apply): <br /> F Remediation Has Not Been Attempted <br /> F Remediation Was Designed Incorrectly r YES 0 NO <br /> r Remediation Was Shut Off Prematurely <br /> F Poor Remediation 08,M <br /> Other - lRemediation not completed:vapor in crawl <br /> g.Soil or groundwater has been tested for MTBE and results reported in accordance with Health and Safety Code Section r Not Required YES NO <br /> 25296.15. <br /> h.Does a nuisance exist,as defined by Water Code section 13050. r YES t' NO <br /> 1.Media-Specific Criteria:Groundwater-The contaminant plume that exceeds water quality objectives is stable or decreasing in areal extent,and YES <br /> meets all of the additional characteristics of one of the five classes of sites listed below.-CLEAR SECTION ANSWERS <br /> EXEMPTION-Soil Only Case(Release has Doi Affected Groundwater-Info) YES t' NO <br /> Does the site meet any of the Groundwater specific criteria scenarios? YES r NO <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 <br /> surface water body is-1,000 feet from the defined plume boundary.The dissolved concentration of benzene is<3,000 Ng/L.The dissolved concentration of G YES r NO <br /> MTBE is<1,OD0 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 ifsite NO <br /> specific conditions satisfy items 2a,2b,or 2c-CLEAR SECTION ANSWERS <br /> EXEMPTION-Active Commercial Petroleum Fueling Facility YES f' NO <br /> Does the site meet any of the Petroleum Vapor Intrusion to Indoor Air specific criteria scenarios? r YES f' NO <br /> ADDITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria: <br /> Soil Gas Samples: <br /> r No Soil Gas Samples r Taken Incorrectly <br /> Exposure Type: <br /> G Residential r Commercial <br /> Free Product: <br /> C In Groundwater r In Soil r Unknown <br /> TPH in the Bioattenuation Zone: <br /> r t 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 /> f <5 Feet(No BioZone) ('z 5 Feet and<10 Feet r z 10 Feet and<30 Feet r z 30 Feet r 30ft BioZone Compromised TPH>100mg/kg r Unknown <br /> 02 Data in Bioattenuation Zone: <br /> F No 02 Data r 02<4% r 02 t 4% <br /> Benzene In Groundwater: <br /> f't 100 Ng/I and<1,000 pg/I r t 1,000 pg/I r Unknown <br /> Soil Gas Benzene: <br /> f't 85 pg/m3 and<280 pg/m3 r t 280 pg/m3 and<85,000 pg/m3 r>_85,000 pg/m3 and<280,000 pg/m3 r>_2130,000 pg/m3 r Unknown <br /> Soil Gas EthylBenzene: <br /> C't 1,100 pg/m3 and<3,600 pg/m3 r t 3,600 pg/m3 and<1,100,000 pg/m3 r t 1,100,000 pg/m3 and<3,600,000 pg/m3 r >_3,600,000 pg/m3 r Unknown <br /> SWI Gas Naphthalene: <br /> r t 93 Ng/m3 and<310 pg/m3 r 2:310 Ng/m3 and<93,000 4tg/m3 r t 93,000 pg/m3 and<310,000 Ng/m3 r z 310,000 Ng/m3 r' 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 FNO <br /> if it meets 1,2,or 3 below.-CLEAR SECTION ANswERs <br /> https:Hgeotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=TO... 6/27/2014 <br />