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Table 1. Cleanup Levels for Constituents in Groundwater <br /> Former Cal Farm Supply, Stockton <br /> Detection Cleanup Level 2 <br /> Chemical Limits Water Quality Limit 3 Basis for Limit <br /> Inorganic Compounds <br /> Ammonium-N 0.5 mg/I 1.5 mg/I Taste and Odor <br /> Nitrate (as Nitrogen) 1 mg/I 10 mg/I California DHS Primary MCL <br /> Nitrate (as Nitrate) 1 mg/I 45 mg/I California Primary MCL <br /> Petroleum Compounds • <br /> Total Petroleum Hydrocarbons as Diesel 50 ug/I 100 ug/I Taste and Odor <br /> Total Petroleum Hydrocarbons as Gasoline 50 ug/I 5 ug/I Taste and Odor <br /> Benzene 0.5 ug/I 0.15 ug/I Public Health Goal (OEHHA) <br /> Toluene 0.5 ug/I 42 ug/I Taste and Odor <br /> Eth (benzene 0.5 ug/I 29 ug/I Taste and Odor <br /> Xylenes (sum of isomers) 0.5 ug/I 17 ug/I Taste and Odor <br /> .Methyl tert-But I Ether(MTBE) 2 u /I 5 ug/I California Secondary MCL <br /> Organochlorine Pesticides <br /> beta-Benzene Hexachloride (b-BHC) 0.05 ug/I 0.025 ug/I California DHS Action Level <br /> Chlorinated Herbicides <br /> 2,4,5-TP (Silvex) 2 ug/I 50 ug/I ICalifornia Primary MCL <br /> Dinoseb 1 ug/I 7 ug/I jualifornia Primary MCL <br /> Footnotes <br /> 'For constituents that are not detected • <br /> 2Groundwater cleanup levels range from the detection limit to the water quality limit. For constituents with a water <br /> quality limit below the detection limit, the cleanup level is the detection limit. <br /> ;Reference:A Compilation of Water Quality Goals, Regional Water Quality Control Board, <br /> Central Valley Region, year 2000 edition <br /> Abbreviations <br /> DHS Department of Health Services <br /> OEHHA California Office of Environmental Health Hazard Assessment <br /> MCL Maximum Contaminant Level for Drinking Water <br /> 30 April 2003 <br />