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3600 Seymour Avenue, West Sacramento, CA 95691 <br /> 916-372-0313 voice-voicemail 916-372-8512 fax <br /> mleeaia@jps.net email <br /> Mr. Cafe, Fueling Station -Stockton,CA <br /> TANK BUOYANCY CALCULATION 15 Apr 03 <br /> For proposed installation of two Xerxes tanks, one 21,000 gallon split tank and one 30,000 single <br /> compartment tank, both with wet annulus. <br /> Per"GEOTECHNICAL SERVICES REPORT, PROPOSED MR. CAFE, NORTHEAST CORNER <br /> OF PARK AND CENTER STREETS, STOCKTON, CALIFORNIA" (File No. 25433.G01) dated <br /> February 25, 2003, by Kleinfelder, Inc. of 2825 E. Myrtle Street, Stockton, CA 95205, no <br /> groundwater was present during and immediately following drilling operations [for that report] in <br /> the depth range of the proposed underground storage tanks and their backfill [typical boring depth <br /> to 25+feet]. <br /> Further, per that report: <br /> "Groundwater or seepage was not encountered. ... Lines of Equal Depth to Groundwater <br /> contour maps published in groundwater reports by the San Joaquin County Flood Control <br /> and Water Conservation District(Spring 1981 to Spring 1999) show groundwater levels in <br /> the project area ranging from about 30 to 50 feet below ground surface." <br /> It is reasonable to assume from this information that groundwater will not be present within the <br /> depth range of the proposed underground storage tanks and their backfill. From this, it is <br /> reasonable to conclude that there will be no buoyancy forces exerted on the underground storage <br /> tanks from groundwater, and holddowns are not required. <br /> Respectfully submitted, <br /> y�v wRcj�ir <br /> 1G��GL Lr. <br /> 0!� <br /> A <br /> No. C25664 <br /> S� REN. <br /> Mike Lee 9�F �0 <br /> Architect OF CAy <br /> eoQU �` I�rrcc''vh e,n ►s <br /> iAo+ \' o 600 <br /> Licensed California Architect C25664 <br /> I <br /> I <br />