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• <br />Pacific Gas and Electric Company <br />December 23, 1996 <br />Mr. Michael Kith <br />' & OES - San Joaquin County <br />222 East Weber .Q ve-ue <br />Courthouse -Room 610A <br />Stockton, CA 95202 <br />Dear Mr. Kith: <br />375 North Wiget Lane, Suite 200 <br />Walnut Creek, CA 94598 <br />510/974-4200 <br />• <br />Re: Pacific Gas and Electric Company's McDonald Island Underground <br />Storage Facility, Whisky Slough Station, Release of Hydraulic Oil <br />This letter is in response to your request to submit a follow-up to my telephone <br />notification on the release of hydraulic oil which occurred on December 15, <br />1996, at the Pacific Gas and Electric Company's McDonald Island Underground <br />Storage Facility, Whisky Slough Station, located at 2121 N. Zuckerman Road, <br />Stockton, California. <br />The release was discovered on Sunday, December 15, 1996, at approximately <br />1030 hours. Although the exact amount of hydraulic oil was not immediately <br />known, it was estimated that approximately 50 - 100 gallons were released due <br />to a ruptured hydraulic gauge failure on Well number 9 East at Whisky Slough. <br />The release of oil flowed into the cellar of the well which is a contained steel, <br />open topped, structure which surrounds the well head. This structure has a new <br />coo,crete flouring. The volume of oil was later determined to be closer o <br />approximately 50 gallons or less. <br />Once the release was discovered, the oil system was isolated and repairs were <br />made to replace the gauge. The release was contained inside the cellar and <br />there was no release or potential damages to the environment. Therefore, <br />cleanup was initiated the following work day. <br />was notified by the foreman on Monday, at approximately 0800 hours. <br />contacted OES - San Joaquin County, San Joaquin County Environmental <br />Health, and OES - State. Our OES - State Control Number for this spill is <br />016975. San Joaquin County Environmental Health Officer, Mr. Michael Kith, <br />suggested we pressure wash the cellar walls after the oily water mixture was <br />vacuumed out. We also washed the concrete flooring. The water/oil material <br />