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STATE OF CALIFORNIA GEORGE DEUKMEJIAN.Governor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD— <br /> CENTRAL VALLEY REGION <br /> 3443 ROUTIER ROAD <br /> SACRAMENTO,CA 95827-3098 `D I f= d !J <br /> u <br /> OCT 1 <br /> 14 October 1987 <br /> 4 <br /> ENVIROMENTAL HEALTH <br /> FERMIT/SERVICES <br /> Mr. Gerry DeGroot <br /> The Wind Shop Co. <br /> 14138 S. Airport Way <br /> Manteca, CA 95336 <br /> RECENT INSPECTION OF CHIRON CORPORATION AND DE GROOT'S CHEESE PLANT AND DAIRY, <br /> SAN JOAQUIN COUNTY <br /> On 16 June 1987, Bill Snavely, Beth Ambacher and I inspected your facility and <br /> that of Chiron Corporation to determine if a Report of Waste Discharge (RWD) was <br /> needed. After extensive testing of Chiron's, the cheese plant's, and the dairy's <br /> wastewater (results enclosed) we have concluded that this wastewater does not <br /> pose a threat to water quality and a RWD will, therefore, not be necessary. <br /> Chiron's wastewater (5,000 gal/day) is presently being treated by a reverse <br /> osmosis (R.O. ) unit which can remove up to 99% of the total dissolved solids <br /> (i.e., copper) . We also tested the wastewater for priority pollutants using EPA <br /> Test Methods 624 and 625. No priority pollutants were detected. <br /> The wastewaters from the cheese plant and the dairy were analysed for nitrogen, <br /> COD and minerals. Our Agricultural Unit determined that the acreage of cropland <br /> at the dairy was adequate to utilize nutrients from the combined waste load and <br /> that this land also has the capacity to assimilate the salt loading (memorandum <br /> enclosed) . <br /> Should further investigation reveal a potential water quality problem, we will <br /> proceed with formulation of waste discharge requirements. <br /> STEPHEN S. BOLL, P.E. <br /> Area Engineer <br /> SSB:ej <br /> Enclosures <br /> cc: Assemblyman Pat Johnnston, Stockton <br /> Mr. Ron Valinoti , San Joaquin Local Health District, Stockton <br /> Mr. Nelson Hiner, Chiron Corporation, Manteca <br /> Ms. Beth Ambacher, Sacramento <br /> Mr. David Mitchell , Emeryville <br /> Mr. Pat Erickson, Manteca <br /> Mr. Glenn Chase, Martinez <br />