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LIQUID CONSTRUCTION, INC. <br /> October 13, 1986 <br /> COPY <br /> Arco <br /> P.O. Box 5811 <br /> San Mateo, California 94402 <br /> Attention: Carl Seward <br /> Re: Arco 46020 <br /> 1711 E. Yosemite/Hwy 99, Manteca, Calif. <br /> Dear Mr. Seward: <br /> On October 8, 1986, a Petro Tite System Test was performed at <br /> the above-referenced location. The test was performed by <br /> Russell Knudsen, LCI Technician. The NFPA Code 329.02 criteria <br /> for a tight system is a maximum loss of .05 gallons per hour. <br /> Because of the almost infinite variables involved, this is not <br /> intended to be a mathematical tolerance and is not the permission <br /> of actual leakage. <br /> During the stand-pipe test procedure, the internal liquid <br /> hydrostatic pressure applied to the underground tank system <br /> is generally two to three times greater than normal liquid <br /> storage pressures. This increase in hydrostatic pressure will <br /> amplify the indicated rate of leak accordinlgy. <br /> SYSTEM TEST <br /> Tank No. 1 - East <br /> Size - 12,000 Gallons <br /> Product - Unleaded <br /> The test showed a minus .037 gallons per hour. <br /> Based on the above criteria, we find the tank tested <br /> mathematically tight. <br /> Tank No. 2 - Center <br /> Size - 12,000 Gallons <br /> Product - Regular <br /> The test showed a plus .035 gallons per hour. <br /> Based on the above criteria, we find the tank tested <br /> mathematically tight. <br /> 1054 North V Street 0 Post Office Box 1220 • Tulare, California 93275 • (209) 688-1980 <br />