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Californiatgional Water Quality Control Board <br /> Central Valley Region <br /> Karl E. Longley,ScD,P.E.,Chair <br /> Linda S.Adams 11020 Sun Center Drive#200,Rancho Cordova,California 95670-6114 Arnold <br /> Secreraryjor <br /> Environmental Phone(916)464-3291 •FAX(916)464-4645 Schwarzenegger <br /> Protection <br /> http://www.waterboards.ca.gov/centralvalley Governor <br /> 19 August 2009 AUG W 15 Lu-s9 <br /> Ms. Anne Conner <br /> Pacific Gas and Electric Company <br /> 375 North Wiget Lane, Suite 200 <br /> Walnut Creek, California 94598 <br /> SITE INSPECTION AND WELL ABANDONMENT AT PG&E MCDONALD ISLAND, SAN <br /> JOAQUIN COUNTY <br /> The Central Valley Water Quality Control Board (Central Valley Water Board) staff conducted <br /> a site inspection of the PG&E McDonald Island Gas Storage facility in San Joaquin County. <br /> The purpose of the site inspection was to observe the abandonment of groundwater <br /> monitoring wells associated with the former Class II Suhface Impoundments. Staff observed <br /> PG&E's contractor abandon several wells in accordance with San Joaquin County <br /> Environmental Health guidelines. The well casings were removed two feet below grade, <br /> backfilled with neat cement, pressurized for five minutes, and then topped off with neat <br /> cement creating a cap. The upper portion of the borehole was then backfilled with concrete <br /> and native soil to grade. Several wells could not be abandoned at this time due to a conflict <br /> with burrowing owls that will require relocation after the breeding season. The Discharger is <br /> waiting to complete the well abandonment activities sometime in September 2009. A well <br /> abandonment report will follow. <br /> The site inspection report and photos are attached for your review. Please call me directly at <br /> (916) 464-4737 if you have any questions <br /> TODD A. DEL FRATE, P.G. <br /> Engineering Geologist <br /> Title 27 and Non 15 Programs <br /> Compliance & Enforcement <br /> Enclosure(s) Site Inspection Report <br /> Cc: Robert McClellon, San Joaquin County Environmental Health Division, Stockton <br /> CIWQS SIID#1822321 <br /> California Environmental Protection Agency <br /> �d Rec>>cled Paper <br />