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SUPER CENTER MART Page 1 of 2 LTCP Checklist GO GEOTRACKER HOME I MANAGEFPROD T OPEN.ELIGIBLE FOR CLOSURE SUPER CENTER MART(TD6077DO802)-MAP THIS SITE gGANt o nyPwCKiw7 AGENCIES 701 CHARTER WAY E ACTIVITIES REPORT SAN JOAOUIN COUNTY LOP(LEAD)-CASE M:2512 STOCKTON,CA 95201 CASEWORKER:n4Aotct GOfIZaI Fl-SUPERVISOR:ADRIENNE ELLSAESSER W SAN JOAQUIN COUNTY PUBLIC EEPAGE CENTRAL VALLEY RWOCB(REGION 5S)-CASE it,390981 VIEW PRINTABLE CASE SUMMARY FOR THIS SITE CASEWORKER:JAMES aARTON-SUPERVISOR:CORI CONDON CUF Claim is 12741 CUF Priority Assigned:B CUF Amount Paid:S838 569 CR Site ID t:NOT SPECIFIED THIS PROJECT WAS LAST MODIFIED BY NOEL NENDERSON ON 4/8!2015 4:14:33 PM-HISTORY THIS SITE HAS SUBMITTALS.CLICK I=TO OPEN ANEW WINDOW WITH THE SUBMITTAL APPROVAL PAGE FOR THIS SITE. CLOSURE POLICY THIS VERSION IS FINAL AS OF 418/2015 CHECKLISTWITIATED ON 711812013 re r nae pOLry HIaTOR GenSECTIO eral Criteria-The site satisfies the policy general criteria-n EaR N ANSWER§ NO a,is the unauthorized release located within the service area of a putille waters stem? Name of Water S stem: r' YES r N /!WATER R YES r N b.The unauthorized release consists only of petroleum jbW. YES r N c.The unauthorized('primary)release from the UST system has been stopped. C 0 FP Not Encountered t' YES � N d.Free product has been removed to the maximum extent practicable 110M. e.A conceptual site model that assesses the nature,extent,and mobility of the release has been developed finfol. is YES N f. dary source has been removed to the extent practicable i Impediment to Removing Secondary Source(Check all that Applyk F Remediation Has Not Been Attempted F Remediation Was Designed Incorrectly F Remediation Was Shut OH Prematurely YES R F Poor Remediation 08M r N Dina, - Remediation not completed; DPE was stopped between January 2 and April 2, 2013, and restarted April 3, 2013 after receiving additional funds from the USTCF. - December 2014 UPDATE - site is in rebound testing, some evidence of rebound at this time. 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 re YES r N In.Does a nuisance exist,as defined by Water Code section 13050. r YES R N 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 characteristics of one of the five classes of sites listed below.-r Fat:c TION ANSWERS EXEMPTION-Soil Only Case(Release has not Affected Groundwater-1ff0) C YES t' N Does the site meet any of the Groundwater specific criteria scenarios? R YES r N 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 feet from the defined plume boundary.The dissolved concentration of benzene is<3,000 pg/L.The dissolved concentration of MTBE is<1,000 Ng/L. 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 YES items 2a.2b,or 2c-CLEAR SECTION ANSWERS EXEMPTION-Active Commercial Petroleum Fueling Facility f• YES r N 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 -CLEAR SECTION ANSWERS EXEMPTION-The upper 10 feet of soil is free of petroleum contamination r YES R N Does the site meet any of the Direct Contact and Outdoor Air Exposure criteria scenarios? r YES t• N ADDITIONAL QUESTIONS-Please indicate only those conditions that do not meet the policy criteria: Exposure Type: C Residential r Commercial r Utility Worker Petroleum Constituents in Soil: R 5 5 Feet bgs r>5 Feet bgs and 510 Feet bgs C Unknown Soil Concentrations of Benzene: C>1.9 mg/kg ands 2.8 mg/kg C>2.8 mg/kg and 5 8.2 mg/kg C>8.2 mg/kg and5 12 mg/kg C>12 mg/kg and15 14 mg/kg C>14 mg/kg C Unknown Soil Concentrations of EthylBenzene: C>21 mg/kg ands 32 mg/kg R>32 mg/kg and 5 89 mg/kg C>89 mg/kg and 5 134 mg/kg C>134 mgikg and<314 mg/kg C>314 mg/kg C Unknown Soil Concentrations of Naphthalene: C>9.7 mg/kg and 5 45 mg/kg r>45 mg/kg and 5 219 mg/kg C>219 mg/kg r'Unknown Soil Concentrations of PAH: r>0 063 mg/kg ands 0,68 rng kg r>0.68 mg/kg and<_4.5 mg/kg C>4.5 mg/kg R Unknown Area of Impacted Soil: r Area of Impacted Soil>82 by 82 Feet r Unknown Additional Information Should this case be closed in spite of NOT meeting policy criteria? Iain: Ethylbenzene at 40 mg/kg was ec untered at 5 feet bsg in P5 near east end of the south dispenser island; this area was likely addressed by extraction well W4, screened 10-35 feet bsg; with an estimated 5,545 lb of contaminants extracted from R YES C N oil gas, this impact has likely been addressed. With a paved site the ERD is of the opinion that there is minimal potential for harmful direct contact. https://geotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=T06... 4/8/2015