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MARLEY COOLING TOWER CONY • <br /> STQCKON, SAN JOAQUIN COUNTY <br /> TABLE 1 <br /> Standards to Protect <br /> Aquatic Human Irrigation Basin Plan <br /> Constituent Life 1 Health2 Water3 Objectives4 <br /> Copper 6.5 ug/l 1000 ug/l 200 ug/l 10 ug/l <br /> Trivalent Chromium 120 ug/1 50 ug/l 100 ug/l -- <br /> Hexavalent Chromium 11 ug/l 50 ug/l 100 ug/l -- <br /> Arsenic 1 190 ug/l 50 ug/l 100 ug/l 10 ug/l <br /> Total Dissolved Solids -- 500 mg/l 640 mg/l 500 mg/l <br /> 1 from Reference 1; Copper and Trivalent Chromium values assume a hardness <br /> (measured as CaCO3) of 50 mg/1 ; hardness of Calaveras River at Bellota is <br /> 60 to 80 mg/l <br /> 2 from Reference 2; Copper and total dissolved solids values are secondary, <br /> not primary, standards based on organo-leptic data <br /> 3 from Reference 3; total dissolved solids value is for sensitive crops <br /> 4 from Reference 4; values are for either the Delta or San Joaquin River, <br /> whichever is more restrictive <br /> Additional Data Collection <br /> At present, limited data exists for receiving water quality and flows, treatment <br /> plant efficiencies, and ground water. Also, since the 1 April to 1 October <br /> effluent limits are based entirely on water quality criteria, Marley Cooling Tower <br /> Company has concerns that their treatment technology may not be able to meet the <br /> effluent limits . Accordingly, Marley Cooling Tower Company will prepare. a <br /> Technical Report containing the necessary data by 1 April 1988. <br /> After receipt of the Technical Report, the Regional Board will hold a hearing to <br /> consider modifying the Effluent Limitations. Any Board action, or failure to act, <br /> will be subject to petition for review pursuant to Water Code Section 13320. <br /> References <br /> 1. "Ambient Water Quality Criteria" , individual documents for Chromium, Copper, <br /> and Arsenic; U.S. Environmental Protection Agency; 1985 <br /> 2. Primary and Secondary Federal Drinking Water Standards; Title 40, Code of <br /> Federal Regulations <br /> 3. "Water Quality for Agriculture"; R.S. Ayers and D.W. Westcot; FAO Paper 29, <br /> Rev. 1/ 1986 <br /> 4. "Water Quality Control Plan Report 5B"; Central Valley Regional Water Quality <br /> Control Board; 1975 <br />