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CHEVRON #9-8632 Page 1 of 1 i Path to Closure Plan © GEOTRACKER HOME I MANAGEPROJECTS IREPORTS I SEARCU I LOWUT CHEVRON #MG32 (TO607700670) - MAP THIS SITE OPEN- SITEASSESSMENT 575 GRANT LINE RD W CLEANUP OVERSIGHT AGENCIES TRACY , CA 95376 ACTIVITIES REPORT SAN JOAQUIN COUNTY LOP (LEAD - CASEA 1408 CASEWORKER: VICKI MCCARTNEY - SUPERVISOR:ADRIENNEELLSAESSER SAN JOAQUIN COUNTY PUBLIC WEEPAGE CENTRALVALLEY RWQCD (REGION SS) - CASE#: 390842 VIEW PRINTABLE CARE SUMMARY FOR THIS SITE CASEWORKER: JAMES BARTON - SUPERVISOR: CORI CONDON CUP Claim M: 9662 CUFPdodty Assigmd: D CUFAmount Paid: £D THIS PROJECT WAS IAST MODIFIED BY NOEL RENOERSON ON 112220133:45:12 PM - HISTORY THIS SITE HAS SUBMITTALS. CLICKEfj ER TO OPEN A NEW WINDOW WITH THE SUBMITTAL APPROVAL PAGE FOR THIS SITE. Path to Closure Plan - FY 12113 THIS VERSION IS FINAL AS OF112212013 PATH TO CLOSURE HISTORY CLEAR I RESET PATH TO CLOSURE PLAN IMPEDIMENT is General Criteria F: Secondary source has NOT been removed to the extent practicable f Procedural Impediment - Ixro Step to Resolve Impediment 1 - Step 1 : - DELETE STEP COMPLETION DATE cocaine gas at ylbenzene t ue (and xex) ; i soil dl oil gasinvestig i e be perform additional valuate PROJECTED DATE ACTUALOATE rphichadene (positivearesu s e i ythe i o removal) aa rom was 3'3012015 ��.. ,...a, aura rP,-..m...P.,nea n=..=� ,.�m=nl'. nF a a... , mas�mc"ry nl An for orDbeADDITIONAL STEP^, m• ^�h• �� h� IMPEDIMENT 2: Media Specific Criteria: Petroleum Vapor Intrusion to Indoor Air: The site Is NOT considered low-threat for n Procedural Impediment - WFo the vapor-intrusion-to-air pathway and site-specific conditions do NOT satisfy items 23, 2b, or 2c . Conditions that do not meet the policy criteria: • TPH In the Bloattenuation Zone: >_ 100 mg/kg • Bioattenuatlon Zone Thickness: < 5 Feet (No BioZone) • 02 Data in Bioattenuation Zone: 02 < 4% • Soil Gas Benzene: >_ 280 pg/m3 and < 86,000 pg/m3 • Soil Gas Ethyleenzene: 2 31600 p9fm3 and < 1,100,000 pg1m3 Step to Resolve Impediment 2 - Step 1: - GELETE STEP COMPLETION GATE 1 gas c ®mylbenrequ £ vapor intrusion i al rem Teat ; additional soil and still goo ai e[igaiion needed,e site may be required to perform Additional remediation. ACM61.13111154 RGa�aDrm15AT r ADDADDITIONALSTEP IMPEDIMENT 3: Media Specific Criteria: Direct Contact and Outdoor Air Exposure: The site is NOT considered low-threat ❑ Procedural Impediment - Ixrp for direct contact and outdoor air exposure as it does NOT meet 1 , 2, or 3. Conditions that do not meet the policy criteria: • Exposure Type: Commercial • Petroleum Constituents in Soil: 55 Feet bgs _ • Soil Concentrations of Benzene: a 14 al Soli-Concentration"f EthylBenzene:->134-mg/kg antl-15-314n ijlkg • Soil Concentrations of Naphthalene: Unknown • Soil Concentrations of PAH: Unknown • Area of Impacted Soil: Unknown Step to Resolve Impediment 3- Step is - DELETE STEP COMPLETION DATE n9ultant must ameliorate the excess contaminant concentrations In shallow soil or demonstrate contaminants do not pose an unacceptable direct contact or exposure to outdoor air PROJECTED DATE ACTUAL DATEb _ _313N2015 I ADDADDITIONALSTEP REQUIREMENTS ALONG PATH TO CLOSURE PUBLIC WELL DATE IDENTIFIED RP NOTIFICATION PARTICIPATION DESTRUCTION WASTEDISPOSAL LAND USE SITE CLOSURE FOR CLOSURE' CLOSURE INITIATED BY DATE COMPLETION DATE DATE DATE RESTRICTION DATE DATE F SAN JOAQUIN COUNTY LOP v F— F� I F' F F' ' D•te Identified for Closure is the date all Impediments to closure have been removed Save in Progress Save as Final LOGGED IN AS HENDERSONN CONTACT GEOTRACKER HELP https://geotracker_waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=T. . . 11 /22/2013