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yy <br /> California *gional Water Quality Conti Board - � <br /> Central Valley Region <br /> Karl E.Longley,ScD, P.E., Chair <br /> Linda S.Adams Arnold <br /> Secretary for 11020 Sun Center Drive#200, Rancho Cordova, California 95670-6114 Schwarzenegger _ <br /> Environmental Phone(916)464-3291 • FAX(916)464-4645Governor <br /> ��Protection http://www.waterboards.ca.gov/centralvalley eIVED <br /> 15 January 2009 JAN �0 2,09 <br /> Ms. Jennifer Sedlachek TIC ENGINEERING <br /> ExxonMobil Oil Corporation 7�1 <br /> 4096 Piedmont Ave, #194 <br /> Oakland, CA 94520 <br /> DOCUMENT REVIEW, FORMER MOBIL STATION 99CAS (AKA MARLER PROPERTY, <br /> AKA JH GRIFFIN MOBIL SERVICE), 75 EAST ALPINE AVENUE, STOCKTON, <br /> SAN JOAQUIN COUNTY(LUSTIS #390857) <br /> Previously I reviewed the Well Installation and Pilot Test Work Plan.(Workplan) received 8 December <br /> 2008 from your consultant ETIC'Engineering, Inc. (ETIC). My 23 December 2008 Workplan response <br /> letter (Letter) requested a revised Figure 3 of the proposed remediation well locations. Subsequently <br /> Bryan Campbell of ETIC contacted me by phone on 8 January 2009, and we discussed moving the <br /> wells to the south, in response to my Letter concerns with the pilot test targeting tight clays and clayey . <br /> silts with groundwater extraction and soil vapor extraction. On 14 January 2009 1 received an email <br /> from Erik Appel of ETIC, which included a revised Figure 3 indicating the wells were moved south to <br /> locations with a higher probability of encountering more permeable sands. The new locations for the <br /> remediation wells are acceptable; therefore, final approval is given to schedule the installation of the <br /> two groundwater extraction wells (EX-1 and EX-2) and three soil vapor extraction wells (VEW-1 <br /> through VEW-3). <br /> Please procure the appropriate permits, and,give the San Joaquin County Environmental Health <br /> Department and myself at least three working days notice prior to starting fieldwork. If you have any <br /> questions, you may contact me,at (916) 464-4615, or I can be reached by email at <br /> jbarton@waterbboard�s.ca.gov. t <br /> JAMES L. L. BARTON. P.G. <br /> Engineering Geologist <br /> cc: Ms. Carmen Harms, SWRCB, UST Cleanup Fund, OSCA Account, Sacramento <br /> Ms. Margaret Lagorio, San Joaquin County Environmental Health Department, <br /> 600 East Main Street, Stockton 95202 <br /> Mr. Duane and Ms. Wendy Berdt, Guido Segarini Trust, PO'Box 1810, Aptos 95001 <br /> Ms. Theresa Marler; 14245 Lora Drive, #16, Los Gatos, CA 95030 <br /> Ms. Kama Herringfeld, Herum, Crabtree Brown;2291 W. March Lane, Ste. 100, Stockton 95207 <br /> Mr. Kelly Reilly, 7808 Kelley Drive, Ste. F, Stockton 95207 <br /> Mr. Erik Appel, ETIC Engineering, 2285 Morella Avenue, Pleasant Hill 94523 <br /> California Environmental Protection Agency <br /> Cd Recycled Paper <br />