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r <br /> A& <br /> ZON <br /> ENGINEERING & TESTING <br /> A Subsidiary of Arizona Instrument Corporation <br /> April 7, 1993 <br /> Ken Green <br /> USA Petroleum Corporation <br /> 1261 East 9th Street <br /> Pomona. CA 91766 <br /> Re: Tank Tightness Tests - USA Petroleum #65 <br /> 2500 West Lodi Lodi CA <br /> Dear Ken, <br /> Precision tests were performed on underground storage tanks at the above location <br /> using the Tracer Tight® method for tank tightness testing. We have reviewed the data <br /> produced in conjunction with this test for purposes of verifying the results and certifying the <br /> tank system. The testing was performed in accordance with Tracer Tight® protocol, which <br /> meets the criteria set forth in NFPA 329 for a precision tank test. <br /> The results of testing are shown on the following certification page and indicate <br /> whether the tank and associated piping passed or failed. Included with the certification is <br /> a report consisting of laboratory analysis, condensed data sheet and a site map. If you <br /> have any questions do not hesitate to contact us. <br /> Sincerely, <br /> ';;Mg, '�;� ;�' <br /> Quinn Johnson <br /> President <br /> gl <br /> Enclosures <br /> P.O. Box 8490 • Mesa, Arizona 85214 9 (602) 926-3000 • (800( 229-2930 <br />