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SAN JOAQUIN COUNTY Page 1 of 2 LTCP Checklist ME I MANAGE PROJECTS I REPORTS I SEARCH I LOGOUr SAN JOAQUIN COUNTY (770000004659) - MAP THIS SITE OPEN - SITEASSESSMENT 630 N CALIFORNIA STREET CLEANUP OVERSIGHT AGENCIES STOCKTON , CA 95202 ACTIVITIES REPORT SAN JOAQUIN COUNTY LOP (LEADI - CASE#: 391190 CASEWORKER: LISA ME NA - SUERVLSOR: ADRIENNE ELLSAESSER SAN JOAQUIN COUNTY PUBLIC WEEPAGE CENTRAL VALLEY RWOCB (REGION SS) View PRINTABLE CASE SUMMARY FOR THIS SUE THIS PROJECT WAS LAST MODIFIED BY NUEL HENOERSON ON 8M12013 3:37:30 PM - HgUm CLOSURE POLICY THIS VERSION IS FINAL AS OF 81612013 CHECKLISTINITIATED ON 7ASVYBI3 CLOSURE POLICY HISTORY General Criteria - The Site satisfies the policy general cfltefla - CLEAR SECTION ANSWERS NO a. Is the unauthorized release located within the Service area of a public waters stem? Name of Water System : CALWATEq r YES r NO b. The unauthorized release consists only of petroleum (info). r YES C N0. c. The unauthor¢ed ("primary') release from the UST system has been slopped. IF YES C NO d. Free product has been removed to the maximum extent practicable )into). r FP Not Encountered C YES C NO e. A conceptual sitemodel that assesses the nature, extent, and mobility of the release has been developed fy. Cescripnon (Check all that Apply): F GW Not Evaluated C Groundwater Assessment Incomplete - Areal Extent of Contamination Not Defined F Groundwater Assessment Incomplete - Depth of Contamination Not Defined EI Hydrogeology Not Adequately Defined FI Potential Receptors Not Identified r YES NO r Fault Assessment Incomplete - Areal Extent Not Defined r Soil Assessment Incomplete - Depth Unknown r' Soil Vapor Not Evaluated F Other - ISim is new and has not been evaluated E Secondary source has been removed to the extent predicable finft I. Impediment to Removing Secondary Soume (Check all that Apply): ❑ Remediation Has Not Been Attempted F Remediation Was Designed Incorrectly - (` YES Iii 17 Recantation Was Shut OK Prematurely rl Poor Enunciation O&M Father - ISite currently being evaluated g. Soil or groundwater has been tested for MTBE and resu@s reported In accordance with Health and Safety Code Section C Net Required f VES r NO 25296.15. quire h. Does a nuisance exist, as defined by Water Code section 13050. C VES f_ NO 1. MediaSpecflic Criteria: Groundwater - The contaminant plume that exceeds water quality objectives Is stable ordecreasing in areal extent and NO meets all of the additional characteristics of one of the five classes of sites listed below. - CLEAR sECTIONArvsWERS EXEMPTION - Soil Only Case (Release has not Affected Groundwater - Info) C YES r NO Does the site meet any of the Groundwater specific criteria scenarios? r YES G NO ADDITIONAL QUESTIONS - Please indicate only those conditions that do not meet the policy criteria: Plume Length (Thal Exceeds Water Quality Objectives) : C' i 100 Feet and < 260 Feet r a 250 Feet and < 1,000 Feet r' z 1 ,000 Feet G Unknown Plume is Stable or Decreasing in AREAL Extent I" No r Unknown Free Product in Groundwater : r' Yes r No r' Unknown Free Product Has Been Removed to the Maximum Extent Practicable r' No r, Unknown Forsites with free product, the Plume Has Been Stable or Decreasing for54ears (info) : (' No C' Unknown For sites with free product, owner W filling to Accept a Land Use Restriction (if required) C' No r Unknown - Free Product Extends ONstte : r Yes r Unknown Benzene Concentration r ? 1 000 pg/I antl < 3,000 pgll C a 3,000 pgil rUnknown MTBE Concentration : ('' t 1 ,000 pg/I r Unknown Nearest Supply Well (From Plume Boundary) ; r 5 250 Feet r > 250 Feet and 51,000 Feet r Unknown Nearest Surface Water Body (From Plume Boundary) : C < 250 Feet r > 250 Feet and s 1 ,000 Feet C Unknown https :Hgeotracker.waterboards.ca. gov/regulators/screens/closur"olicy.asp?global_id=T10. .. 8/6/2013