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Date: 12 October 1993 <br />Facility: Pacific Bell (UE -042) <br />345 North San Joaquin Street <br />Stockton, California <br />Tank: 25,000 -gallon diesel storage tank <br />The underground storage tank at this site is a Modern Welding Company manufactured double- <br />wall steel tank with fiberglass reinforced plastic exterior coating for corrosion resistance. The <br />underground piping is double wall and slopes to a piping manhole sump on the tank. The <br />secondary containment pipe is open to the piping manhole sump so a piping leak would run <br />into the sump. <br />The tank is monitored continuously by a Veeder-Root TLS -2501 monitoring system with <br />Veeder-Root liquid sensors located in the double-wall tank annular space and in the tank <br />manhole sumps. The Veeder-Root TLS -2501 tank monitor has a local alarm and in addition <br />is connected by telephone line to Pacific Bell's central monitoring center in Fresno. If a leak <br />or spill should occur, a local alarm will sound and an alarm will be telephoned to the Fresno <br />monitoring system. <br />In the event of a leak or spill, the operator of the underground tank will notify the Pacific Bell <br />Emergency Control Center (510) 823-7777, and the San Joaquin County Environmental Health <br />Department (209) 468-3420. <br />Pacific Bell will notify one of the following companies for the fastest cleanup of the spill or <br />leak possible: <br />1. Aronson Engineering, 6809 McComber Street, Sacramento, CA 95828 <br />(916) 381-1600 <br />2. IT Corporation, 4575 Pacheco Blvd, Martinez, CA 94553 <br />(510) 372-9100 <br />These companies maintain or have access to absorbent materials, suction pumps, and other <br />equipment for cleanup of spills, and removal of spills, and removal of leaked material from <br />secondary spaces. <br />Person responsible for authorizing work: Lyle Stuck, Pacific Bell Facility Engineer, 6801 <br />Almaden Road, San Jose, CA 95120 (408) 268-0012. <br />Person responsible for operating tank: Ken McDonald, Pacific Bell Power Specialist, 345 <br />North San Joaquin Street, Stockton, CA 95201 (209) 943-4128. <br />