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WASTE DISCHARGE REQUIREMENTS -2- <br /> CITY OF STOCKTON <br /> AUSTIN ROAD LANDFILL <br /> GROUND WATER TREATMENT SYSTEM AND STORMWATER DISCHARGE <br /> SAN JOAQUIN COUNTY <br /> Detection Analytical <br /> Constituent Level Units Method <br /> Tetrachloroethene 0.5 Ag/l EPA Method 601 <br /> Benzene 0.5 Ag/l EPA Method 602 <br /> Toluene 0.5 Ag/l EPA Method 602 <br /> Xylene 0.5 Ag/l EPA Method 602 <br /> Ethylbenzene 0.5 yg/1 EPA Method 602 <br /> 5. Additional concentration limits regarding the constituents of concern <br /> are as follows: <br /> Constituent Level Units Consideration <br /> Tetrachloroethene 5 mg/l PMCL <br /> 1,1 Dichloroethane 5 mg/l PMCL <br /> 1,2 Dichloroethane 0.5 mg/l PMCL <br /> Vinyl Chloride 0.5 'Vg/l PMCL <br /> Benzene I Ag/l PMCL <br /> Ethylbenzene 680 mg/l PMCL <br /> Toluene 1000 Ag/l PMCL - EPA <br /> Xylene 1750 lig/l PMCL <br /> The above levels are State and Federal Drinking Water Standards Maximum <br /> Contaminant Levels (MCLs) . California MCLS are given unless otherwise <br /> noted. <br /> 6. The Environmental Protection Agency (EPA) and the Board have classified <br /> this discharge as a minor discharge. <br /> 7. Federal Regulations for storm water discharges were promulgated by the <br /> United States Environmental Protection Agency (USEPA) on 16 November 1990 <br /> (40 CFR Parts 122, 123, and 124) . The regulations require specific <br /> categories of facilities, which discharge stormwater associated with <br /> industrial activity (storm water), to obtain NPDES permits and to implement <br /> Best Available Technology Economical Achievable (BAT) and Best Conventional <br /> Pollutant Control Technology (BCT) to reduce or eliminate industrial storm <br /> water pollution. <br /> 8. The State Water Resources Control Board adopted Order No. 91-13-DWQ <br /> (General Permit No. CAS000001) specifying waste discharge requirements for <br /> discharges of stormwater associated with industrial activities, excluding <br /> construction activities, and requiring submittal of Notice of Intent by <br /> industries to be covered under permit. This Order further specified that <br /> if an individual permit is adopted for storm water runoff from a facility, <br /> then the General Permit would no longer apply. These waste discharge <br /> requirements function as the individual permit and provisions it contains <br />