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Tk2__ OFFICE PLAZA Page 1 of 2 Path to Closure Plan : GO GEOTRACKERHOMEIMANAGE PROJECTS IREPORSI5 R OL GOUT TRACY OFFICE PLAZA(T10000006059)-MAP THIS SITE OPEN-SITE ASSESSMENT 324 EAST ELEVENTH STREET CLEANUP OVERSIGHT AGENCIES TRACY,CA 95376 ACTIVITIES REPORT SAN JOAQUIN COUNTY LOP(LEAD)-CASE#:0002083 SAN JOAQU I N COUNTY PUBLIC WEBPAGE CASEWORKER:VICKI MCCARTNEY-SUPERVISOR:ADRIENNE ELLSAESSER VIEW PRINTABLE CASE SUMMARY FOR THIS SITE CENTRAL VALLEY RWQCB(REGION 5S)-CASE#:391192 CASEWORKER,JAMES BARTON-SUPERVISOR:CORI CONDON THIS PROJECT WAS LAST MODIFIED BYbVfj HENDERSONON 6262014 2:30:47 PM-HISTORY Path to Closure Plan THIS VERSION IS FINAL AS OF 6/262014 PATH TO CLOSURE HISTORY CLEAR/RESET PATH TO CLOSURE PLAN IMPEDIMENT 1: General Criteria E:A conceptual site model that assesses the nature,extent,and mobility of the release f procedural Impediment-INFO has NOT been developed Step,to Resolve Impediment 1-Ste 1:- COMPLETION DATE Implement approved s'`.a assessment a-.4: pi-. PROJECTED DATE ACTUAL DTE 9/30/2014 t0 Resolve Impediment 1-Step 2:-DELETE STEP -- COMPLETION DATE Prepare and submit a report of findings from the site assessment. PROJECTED DATE ACTU LDATE 12/31/2014 ADD ADDITIONAL STEP IMPEDIMENT 2: General Criteria F:Secondary source has NOT been removed to the extent practicable F_ Procedural Impediment-INFO Step to Resolve Impediment 2-Ste 1:- S P COMPLETION DATE Assess secondary source. MIUAL 2A19 ROJECTED DA 9/30/2014 Step t0 Resolve Impediment 2-Step 2:- LETE STEP COMPLETION DATE Prepare and submit a report of findings from the site assessment, characterizing the secondary source - - and evaluating the necessity for remediation of the secondary source. PROJECTED DATE ACTUAL DATE 1 2/3 1120 1 4 �— ADD ADDITIONAL STEP IMPEDIMENT 3: Media-Specific Criteria:Groundwater:The contaminant plume that exceeds water quality objectives is I— Procedural Impediment-INFO NOT stable or decreasing in areal extent,and does NOT meet all of the additional characteristics of one of the five classes of sites. Conditions that do not meet the policy criteria: • Plume Length(That Exceeds Water Quality Objectives):Unknown • Plume is Stable or Decreasing in AREAL Extent:Unknown • Free Product in Groundwater:Unknown • Benzene Concentration:Unknown • Nearest Supply Well(From Plume Boundary):Unknown St to Resolve Impediment 3-St 1:-DELETE STFP COMPLETION DATE Implement approved work plan for initial assessment of impact to groundwater. OJ CTED DA ACTUAL DATE �— Step to Resolve Impediment 3-Ste 2:-DELETE STEP - - COMPLETION DATE Submit report of findingd and recommendation regarding impact to groundwater. PROJECTED DATE ACTUAL DATE 12/31/2014 ADD ADDITIONAL STEP IMPEDIMENT 4: Media Specific Criteria:Petroleum Vapor Intrusion to Indoor Air:The site is NOT considered low-threat for L r Procedural Impediment-INFO the vapor-intrusion-to-air pathway and site-specific conditions do NOT satisfy items 2a,2b,or 2c. -- Conditions that do not meet the policy criteria: • Free Product:Unknown • TPH in the Bioattenuation Zone:2100 mg/kg • Bioattenuation Zone Thickness:Unknown • 02 Data in Bioattenuation Zone:No 02 Data • Benzene in Groundwater:Unknown • Soil Gas Benzene:Unknown • Soil Gas EthylBenzene:Unknown • Soil Gas Naphthalene:Unknown Step to Resolve ImpedimeM 4-Step 1:-2LLLM STEP - COMPLETION DATE Implement currently (WP dated 11/22/13) ;-__coed site assessment work plan. --- PROJECTED DATE ACTUAL DATE 9/30/2014 I https:Hgeotracker.waterboards.ca.gov/regulators/screens/closure_policy.asp?global_id=T 1... 6/26/2014