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NORTH CAL <br /> CONSTRUCTION Protecting the Environment <br /> F. O. Box 588 Stockton, CA 95201 209/465-5886 General Engineering Class A License No. 505704 <br /> September 9, 1988 <br /> MCI Telecomm uni.ations Corporation <br /> Pacific Division <br /> 21350 Cabot Boulevard <br /> Hayward, California 94545 <br /> Attn: Gerry Siegel <br /> Re: Precision Tank Test <br /> Dear Mr. Siegel: <br /> On August 26, 1988, we performed a Petro-Tite Tank Test at8� 499 <br /> SQuth Corral_._ Hollow Road , Tracy , California. The test was R <br /> performed by an-dy-- Aldridge, North Cal Construction. The NFPA <br /> code for a tight tank system is a tolerance of .050 gallons pre <br /> hour. 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 /> PRECISION TANK TEST <br /> Tank - 1 North <br /> Size - 550 gallon tank <br /> Product - #2 Diesel <br /> The test showed a negative .044 gallons per <br /> hour. Based on the above criteria, we find <br /> the tank system tested mathematically tight. <br /> This concludes our test and findings on August 26, 1988. If you <br /> have any questions regarding the results, please contact me. For <br /> your convenience we have provided San Joaquin Local Health <br /> District with the appropriate documents. <br /> Sincere , <br /> RQb <br /> est oyes <br /> Vice President/Gen Manager <br /> RWN/bm <br />