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CaliforniWegional Water Quality C rol Board <br /> Central Valley Region <br /> oorll <br /> Linda S.Adams Arnold <br /> Secrerar)for Sacramento Main Office Schwarzenegger <br /> Environmental 11020 Sun Center Drive tl200.Rancho Cordova.California 956706114 Goiernor <br /> Prorecrion Phone(916)464-3291 •FAX(916)464-4645 <br /> hap://www.waterboards.ca.gov/cemralvalley <br /> 2 January 2007 <br /> Ms. Jennifer Sedlachek <br /> ExxonMobil Oil Corporation 11' 05 `?O7 <br /> 4096 Piedmont Ave, #194 ETIC ENGAs . -,L <br /> Oakland, CA 94520 (lta � <br /> EXTENSION GRANTED, MARLER PROPERTY (AKA JH GRIFFIN MOBIL SERVICE), <br /> 75 E. ALPINE AVENUE, STOCKTON, SAN JOAQUIN COUNTY <br /> I reviewed the Request for Extension (Request, cover letter enclosed), received by email and <br /> GeoTracker on 29 December 2006 and submitted by your consultant ETIC Engineering Inc <br /> (ETIC). The Request states that access to one of the two private properties to be investigated <br /> has been delayed, and asks for modifications to the schedule required in my 25 October 2006 <br /> Workplan Review (Letter, enclosed), which approved the 2 October 2006 Risk Assessment <br /> and Well Installation Work Plan with modifications. <br /> The Request proposes the following new schedule, "...contingent upon the establishment of <br /> offsite access in a timely manner..." <br /> All groundwater and vapor wells shall be installed by 28 February 2007. <br /> A report of investigation and risk assessment shall be submitted by 27 April 2007, and <br /> this report will include proposed locations for deeper wells. <br /> The deeper wells shall be installed by 27 June 2007, with a report due by <br /> 29 August 2007. <br /> The Request is appropriate and necessary to allow ExxonMobil Oil Corporation additional time <br /> to secure access to both properties. The schedule extension is granted as proposed. All <br /> other conditions approved by my Letter remain unchanged. Please procure the necessary <br /> drilling permits, and provide the San Joaquin County Environmental Health Department and <br /> myself at least three (3) business days notice prior to fieldwork. You may call me at <br /> (916) 464-4615 for questions or additional information. <br /> %JAMES L. L. BARTON, P.G. <br /> Engineering Geologist <br /> Enclosures <br /> California Environmental Protection Agency <br /> 0 Recycled Paper <br />