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■ Lawrence Livermore National Laboratory <br /> August 5, 1988 <br /> Dr. Jog i Khanna <br /> San Joaquin Local Health District <br /> Post Office Box 2009 AUG 91988 <br /> Stockton, Ca 95201 <br /> EPNIROMENTAL HEALTH <br /> FERMIT/SERVICES <br /> Subject: Results of Tank Testing at Lawrence Livermore National <br /> Laboratory Site 300 <br /> Dear Dr. Khanna, <br /> This letter transmits the results of leak tightness tests performed <br /> on underground tank systems at Site 300 since the time of our <br /> submittal to Diane Hinson on January 22, 19.88. All but one of the <br /> tests reported here are Precision Tests performed =in accordance with <br /> NFPA 329-1983 and Section 2643(b) of the California Underground Tank <br /> Regulations. The test constituting the exception was a helium <br /> injection/detection test. <br /> Attached is a copy of each individual test worksheet and report, <br /> along with a table summarizing the information. The test reports are <br /> arranged chronologically by test date, while the summary table lists <br /> the tanks by increasing registration number. <br /> All of the Precision Tests indicate "tight" systems. The helium test <br /> was performed on an empty out-of-use diesel fuel system at Building <br /> 874, SWRCB Registration Number 874-11D. This system will be <br /> permanently closed. The plan for closure is in preparation and will <br /> be received by your office within 30 days. <br /> If you have any questions or comments regarding this work, please <br /> feel free to contact Connie De Grange, Leader, Environmental Guidance <br /> and Monitoring Division, at (415) 422-5167. <br /> f leA-� -Fa <br /> 3 Cyd <br /> Sincerely, <br /> Richard C. Ra(aini <br /> Department Head <br /> Environmental Protection Department <br /> Attachments "• <br /> R. Henry E. Draney <br /> J. Blasy, DOE-LSO T. Devlin <br /> J. Davis, DOE-SAN J. Steenhoven <br /> C. De Grange J. Tulk <br /> EPD: Underground Tanks/1251-88 <br /> An Equal Opportunity Employer•University of Cafifomia•P.O.Box 808 Livermore,Califomia 94550•Telephone(415)422-1100•Twx 910-386-8339 UCLLL LVMR <br />