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LCILIQUID CONSTRUCTION, INC. <br />August 16, 1989 <br />B.P. Oil Company <br />Attn: Lou Parisi <br />2868 Prospect Park Drive <br />Rancho Cordova, Ca. 95670 - <br />Re: B.P. Oil #11192, Pershing Way, Stockton, Ca. <br />Dear Mr. Parisi: <br />On August 9, 1989 a Horner', EZY=7Chek­ System Test was <br />performed at the above -referenced` location. The test was <br />performed by Dennis Goodan, LCI Technician. The NFPA Code 329.02 <br />criteria for a tight system is a maximum loss of .05 gallons per <br />hour. Because of the almost infinite variables involved, this is <br />not intended to be a mathematical tolerance and is not the <br />permission of actual leakage. <br />During the stand -pipe test procedure the internal liquid <br />hydrostatic pressure applied to the.underground tank system is <br />generally two to three times greater than normal liquid storage <br />pressures. This increase in hydrostatic pressure will amplify <br />the indicated rate of leak accordingly. <br />SYSTEM TEST <br />Tank No. 1 <br />Size - 3,000 gallons <br />Product - Waste Oil <br />The test showed a minus .0063 gallons per hour. Based on the <br />above criteria, we find the tank tested mathematically tight. <br />Tank No. 2 <br />Size - 3,000 gallons <br />Product - 10-30 New Oil <br />The test showed a minus .019 gallons per hour. Based on the <br />above criteria, we find the tank tested mathematically tight. <br />Tank No. 3 <br />Size - 3,000 gallons <br />Product - 10-40 New Oil <br />The test showd a plus .0035 gallons per' hour. Based on the <br />above criteria, we find the tank tested mathematically tight. <br />Tank No. 4 <br />Size -3,000 gallons <br />Product - 20-50 New Oil <br />The test showed a plus .0001 gallons per hour. Based on the <br />above criteria, we find the tank tested mathematically tight. <br />1054 North `J' Street • Post Office Box 1220 • Tulare, California 93275 <br />0 (209) 688-1980 <br />