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ROBERT H. LEE & ASSOCIATES <br /> ARCHITECTURE PLANNING <br /> ENGINEERING <br /> �•-�' 947 LOMITA DRIVE, MILL VALLEY, CALIFORNIA 94941 • (4163 383-1680 <br /> June 28 , 1985 <br /> Mr. Daniel T. Ward <br /> Area Engineer <br /> California Regional Water Quality Control Board <br /> Central Valley Region , <br /> 3201 S Street <br /> Sacramento, CA 95816--7090 <br /> HAZARDOUS WASTE DISCHARGE <br /> JIMCO TRUCK PLAZA <br /> JACK TONE RD. AND HWY. 99 <br /> RIPON, CALIFORNIA <br /> #9673 <br /> Dear Mr. Ward, ,{;, :t <br /> The existing truck stop facility, encompassing approximately <br /> 11. 4 acres, consists of a truck service/truck wash building, a <br /> two story warehouse, offices, a two story motel/store, a restaur- <br /> ant and ten fueling pump islands. <br /> The sources of the present hazardous waste discharges on the site <br /> �,- are: <br /> 1) Oil drips from trucks fueling at the pump islands or <br /> parked in the yard. <br /> 2) Minor petroleum spills occurring during the fueling of <br /> the trucks at the pump islands. <br /> 3) Oil and grease being washed off the vehicles during <br /> the truck washing operation. <br /> The aggregate total of fueling spills, oil and grease drippings <br /> and washdown has been estimated by Hiram Duncan, General <br /> Manager,to be a maximum of 50 gallons within a twenty-four hour <br /> period. This quantity represents an abnormal amount of <br /> spillage, not an average spillage. <br /> In accordance with your requirements outlined in your letter and <br /> Inspection Report, dated March 8, 1985, we are submitting the <br /> enclosed completed Facility Permit/Waste Discharge application; <br /> and two prints of Drawings number one and two, showing an oil <br /> and grease interceptor system proposed .for this facility. , <br /> This. system is -designed to contain spill quantities muchIgreater <br /> than 50 gallons, but is primarily designed to separate oil and <br /> grease from the daily volume of water used in the amount of <br /> approximately 22, 000 gallons. The great majority of the water is ' <br /> used for truck washdown, and daily pump island slab washdown. <br />