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I <br /> �r I <br /> � I <br /> i <br /> j <br /> ROBERT H. LES & ASSOCIATES <br /> ARCtiITF=CTLRE <br /> PLANNING -RING <br /> -'./ 147 LOMITA 0=1V6, MILL VALLEY, OALIF0=r4JA 94941 (416] 3H3-16gp <br /> June 28 , 1985 <br /> Mr. Daniel T. Ward <br /> Area Engineer <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> ion <br /> , <br /> 3201 S Street <br /> Sacramento, CA 95816-7090 <br /> S <br /> HAZARDOUS- WASTE DISCHARGE, t' <br /> JIMCO TRUCK PLAZA <br /> JACK 'TONE RD. AND F.WY. 99 <br /> RIPON, CALIFORNIA <br /> "'9673 <br /> Dear Mr. Ward �..�,... <br /> The existing truck stow 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/stere, a restaur_ <br /> ant and ten fueling pumm 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 island_ 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 Permt/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 .,crtian7ti"`ies much -greater:'`.z: <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 />