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2 a . <br />y <br />A& A <br />WA Y <br />TANK TESTING,, <br />, DIV. <br />August 17, 1988 <br />Mobil Oil Corporation <br />1306 Canal Blvd. <br />Richmond, CA 94804 <br />ATTN: Moody Younger <br />RE: 10-143 1469 Hammer "ane, Stockton, CA <br />SM LLDl$tddt 8(Vd. #103 <br />'86R, ild, CA 93313 <br />367-6553 <br />s <br />on • / 1988, <br />above -referenced location. The test was performed by Richard'Orsorno, <br />A A Technician, Certification #414813191. These underground tank <br />and line tests are Precision Tests in accordance vith the .,NFPA Code <br />329.02. <br />,. _ • code •.02 criteria i tight <br />gain or loss of .05 gallons per hour. Because of the aim'­6st Infinite <br />variables involvedl this Is intended to be a mathematical tolerance <br />and is not the permission of actual leakage. <br />During the stand -pipe procedure, the internal liquid hydrostatic <br />pressure applied to.the underground tank system is generally two to <br />three times greater than normal liquid storage pressures. This <br />increase in hydrostatic pressure will amplify the indicated rate of <br />leak accordingly. <br />SYSTEM TEST <br />SIZE - 10,000 Gallon Glass Tank <br />♦ii <br />The test _ • a leakageof • <br />Based on above - .: we find the system mathematically Ti.. <br />TANK NO. 2 - <br />SIZE - 12,000 Gallon Glass Tank <br />PRODUCT - Unleaded <br />The test showed a leakage of - .014 gph. <br />Based on the above criteria, we find the system mathematically Tight. <br />