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� ■ LaLawrence Livermore National <br /> boratory <br /> OPERATIONS AND REGULATORY AFFAIRS DIVISION <br /> October 10, 2006 <br /> Mr. Willie Ng <br /> San Joaquin County Environmental Health Department ` <br /> 304 E. Weber Avenue, Third Floor FERM` <br /> Stockton, CA 95202-2708 <br /> Subject: Annual Monitoring System Certification Results for Underground <br /> Storage Tanks 879-D1 U1, 879-G3U1, and 882-D1 U1 <br /> Dear Mr. Ng: <br /> This letter transmits the annual monitoring system certification for Underground Storage <br /> Tank (UST) 882-D1U1 performed on September 14, 2006, and USTs 879-G3U1 and <br /> 879-D1 U1 performed on September 18, 2006. The annual spill bucket leak test results <br /> are also included. Thornton Environmental Construction performed the certification and <br /> testing for 882-D1U1; Central Petroleum Maintenance performed the certification and <br /> testing for 879-DlU1 and 879-G3U1. <br /> If you have any questions, please contact me at (925) 423-7665. <br /> Sincerely, <br /> Z <br /> Shari Brigdon <br /> Environmental Analyst Associate <br /> Water Guidance and Monitoring Group <br /> Enclosures: 1. Monitoring System Certification package—Building 879 <br /> 2. Monitoring System Certification package—Building 882 <br /> cc w/enclosures: <br /> King, Karin (NNSA/LSO) L-293 <br /> Mishra, Vijay (NNSA/LSO) L-574 <br /> An Equal Opportunity Employer• University of California • P.O. Box 808, L-627, Livermore, California 94551 <br /> (925) 423-7665—Fax (925) 422-2748 <br /> WGMG06:125:SB:rtd <br />