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Comments: `Soil Before'THPg and _ zene @14', from Chevron Tank on 1/6/8� )luene; AS6B @ 11-11.5' from Arco <br /> on 5/26/87, Xylenes; AS6B @ 11-11.�om Arco on 5/26/87, Ethylbenzene; AS1BVO 1-11.5' from Arco on 5/26/87, Lead; <br /> D5 @2.5' from Chevron on 3/15/99, MTBE; PL2 @ 2.5"from Chevron on 3/8/99. No Soil 'Before' data for TPHd, 1, 2- DCA, <br /> TPHmo. `Soil After' TPHg;AS10 @ 10.5-11' from Arco on 2/27/06. BETX, MTBE, and 1, 2- DCA from MW2R @ 15' from <br /> Chevron on 2/27/06. TPHmo and Lead not analyzed for'Soil After'. `Water Before'TPHg from Arco E-10 on 6/18/96, <br /> Benzene from Chevron MUN1-10 on 8/5/93, Toluene from Arco E-9 on 9/11/95, Xylenes and Ethylbenzene from Arco E-10 <br /> on 3/18/96. `Water After' TPHg, Benzene, Toluene, Xylenes, Ethylbenzene and MTBE from Arco E-10 on 1/12/12, <br /> 1, 2 - DCA; E10 from Arco on 4/24/09. TPHmo and Lead not analyzed for'Water After' for Chevron and Arco site. NA—Not <br /> Analyzed. <br /> IV. Closure <br /> Does completed corrective action protect existing beneficial uses per the Regional Board Basin Plan?YES <br /> Does completed corrective action protect potential beneficial uses per the Regional Board Basin Plan? YES <br /> Does corrective action protect public health for current land use? YES <br /> Site management requirements: NONE <br /> Should corrective action be reviewed if land-use changes? YES <br /> Monitoring/Vapor wells decommissioned: YES Number Decommissioned: 18-Chevron Number Retained: 9-Chevron <br /> 5-Arco 40-Arco <br /> List enforcement actions taken: Notice of Responsibility/Reimbursement: CHEVRON SITE#9-4275; 10/17/89, 1/14/91 <br /> ARCO SITE#2133; 10/17/89, 3/28/90,1/14/91,11/19/92 <br /> List enforcement actions rescinded: NONE <br /> 1 11 <br /> V. Local Agency Representative Data <br /> Name: ADRIENNE ELLSAESSER, REHS Title: ACTING PROGRAM COORDINATOR, UNIT IV <br /> Signature: Date: <br /> VI. Central Valley Regional Water Quality Control Board RB Notification <br /> Date Submitted to RB: Response Date: <br /> RB Staff: JAMES L.L. BARTON, PG Response: <br /> Title: ENGINEERING GEOLOGIST <br /> VII. Additional Comments, Data, etc. <br /> THIS IS A COMINGLED PLUME FOR SITE LOCATIONS 2905 &2908 BENJAMIN HOLT DRIVE, STOCKTON, CA. <br /> SOIL'BEFORE'AND 'AFTER', GROUND WATER 'BEFORE'AND `AFTER' RESULTS ARE SEPARATED OUT FOR <br /> CHEVRON AND ARCO SITES IN THE 'BEFORE'AND `AFTER' CLEANUP COMMENT SECTION. <br /> This document and the related CASE CLOSURE LETTER shall be retained by the lead agency as part of the official site file. <br />