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GARY PETERS ENTERPRISES JUL 15 <br /> 9448 BUTTERF I ELD WY ENVIRONMENTAL <br /> SACRAMENTO, CA. 95827 P E R M i @/ EINVi�' <br /> 916-363-9127 <br /> Lic . 90-1144 <br /> Date : 5-23-91 <br /> Ref . #910523 <br /> To: DAVE CASTRO <br /> U.C.L.L.N. L. <br /> P .O .Bon 808 1 -633 <br /> Liver-more , Ca. 94550 <br /> Test location : tank #827-D1U1 , Site 300 . <br /> On 5-23-5'1 tank testing was completed using the LEAK <br /> COMPUTER tank: test system. All testing was done in accordance <br /> with NFPA 329-1983, Section 2643 of the California Underground <br /> Tank Regulations ( as revised) and Federal Regulations under 40 <br /> CFR k" 280-281 ) . The criteria for acceptable tank integrity <br /> allowed by these documents is based upon a detection threshold of <br /> 0 . 10 gallons per hour and a consideration of other specific , <br /> variable factors. Pass/Fail threshold is 0 .05 gal/hr .. <br /> LEAK COMPUTER is a certified volumetric tank test system as <br /> specified under federal regulations ( 40CFR 280) . A copy of this <br /> certification is available on .request . The certified protocol <br /> sets out specific operations and procedures. The data below will <br /> sat i s.+y those protocols. <br /> Tank: # i 1 Comments <br /> product i 'DIFSEC i l <br /> size <br /> 'i LW LYRA 'i i <br /> PASS/FAIL e <br /> tank &a pipes 1 <br /> tank only R55 <br /> e <br /> 2 LEVEL TEST i "0 l NOT RbQyl��� l <br /> high level i 40 tyE -rA' !f==A l <br /> leak rate i 0.002- <br /> error <br /> .®02error 0 . 00'7 s <br /> additional data attached <br /> technician signature <br /> 3/91 <br />