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f� <br /> 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 <br /> 26 June 1989 p <br /> Ms. Lisa F. Brown } <br /> Deputy District Attorney J�' 199 <br /> San Joaquin County <br /> P.O. Box 990 <br /> Stockton CA 95201 <br /> COFFEE GROUNDS DISPOSAL <br /> As promised during our 19 June telephone conversation, I am sending you copies <br /> of the test results on soil , coffee grounds and ponded liquid samples taken at <br /> the Robert Ronyak site on McKinley Avenue, Manteca. I am also sending copies <br /> of test results obtained indirectly from Nestles Foods. <br /> Total Dissolved Solids (TDS) in the ponded liquid at the Ronyak site was <br /> determined by EPA Method 160.1. An employee of JL Analytical Services informed <br /> me that their TDS determination was made on liquid extracted from fresh samples <br /> of coffee grounds. I did not ascertain the method used. Regardless of which <br /> test you rely on, the reported TDS levels are far in excess of the secondary <br /> drinking water standard which recommends a maximum contaminant level of 500 mg/l , <br /> an upper level of 1,000 mg/l and a short term level Of 1,500 mg/1. <br /> If coffee grounds are to be stored, it is necessary that adequate protection for <br /> water quality be provided. Storing the grounds on land or in pits without <br /> adequate separation from ground water does not conform to water quality <br /> regulations and is subject to regulatory or enforcement action. Regulatory <br /> action may include site assessment and ground water monitoring on any site where <br /> the coffee grounds have been stored in the past without adequate safeguards. <br /> If you have any questions or comments in this matter, please call me at (916) <br /> 361-5711. <br /> FF I fa, <br /> r , <br /> LOUIS F. PRATT <br /> Land and Water Resource Specialist <br /> LFPssg <br /> Enclosure <br /> ccs an Joaquin Local Health District, Stockton <br /> San Joaquin County Department of Planning and Building Inspection, Stockton <br /> Mr. Robert Ronyak, Stockton <br />