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Date: January 4, 1999 <br />Facility: DSS Engineering Contractors <br />655 West Clay Street <br />Stockton, California <br />Tank: One 20,000 -gallon diesel storage tank and one 6,000 gallon gasoline storage tank <br />The underground storage tanks at this site are double-wall tanks manufactured by Xerxes. <br />Underground piping is double wall. A sensor in the tank sump accomplishes monitoring of the <br />underground suction piping. A sensor in the tank sump and automatic pump shutdown accomplishes <br />monitoring of the underground pressure piping. The secondary containment pipe is open to the piping <br />manhole sump so a piping leak would run into the sump. <br />The tanks are monitored continuously by an Incon monitoring system with liquid sensors located in the <br />double-wall tank annular spaces and in the tank manhole sump tanks. Automatic pump shutdown is <br />included for the submersible pump. The Incon tank monitor is located inside the building and has a <br />local alarm. Alarm reports are checked daily. <br />The tank monitoring system is tested and maintained by a certified third party company on an annual <br />basis. <br />In the event of a leak or spill, the operator of the underground tank will notify the San Joaquin County <br />Environmental Health Division at (209) 468-3420. <br />DSS will notify the following company for the fastest cleanup of the spill or leak possible: <br />1. Stockton Service Station Equipment <br />(209) 464-8333 <br />Stockton Service Station Equipment maintains or has access to absorbent materials, suction pumps, <br />and other equipment for cleanup of spills, and removal of spills, and removal of leaked material from <br />secondary spaces. <br />Person responsible for authorizing work: Dan Silva, DSS Engineering Contractors, 639 West Clay <br />Street, Stockton, CA 95206 (209) 948-0302. <br />