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WASTE DISCHARGE REQUIREMENTS -2- <br /> GENERAL ORDER FOR LAND DISPOSAL <br /> OF GROUND WATER FROM CLEANUP OF <br /> PETROLEUM FUEL POLLUTION <br /> 7. The primary pollutants in fuels are: Total Petroleum Hydrocarbons <br /> (gasoline, diesel , kerosene, fuel oil and heavier ranges) ; Benzene; <br /> Toluene; Xylene; Ethylbenzene; and Tetraethyl lead. <br /> 8. Existing wastewater treatment technology, primarily utilizing air <br /> stripping and/or activated carbon, is capable of dependably removing these <br /> constituents to concentrations which are generally non-detectable by <br /> current analytical technology. The commonly achieved detection levels are <br /> as follows: <br /> Detection Analytical <br /> Constituent Level Units Method <br /> Total Petroleum 50 µg/1 EPA Method 8015 <br /> Hydrocarbons <br /> Benzene 0.5 µg/1 EPA Method 602 <br /> Toluene 0.5 ug/1 EPA Method 602 <br /> Xylene 0.5 µg/1 EPA Method 602 <br /> Ethylbenzene 0.5 µg/1 EPA Method 602 <br /> Tetraethyl lead 1 µg/1 Graphite <br /> (as total lead) Furnace AA <br /> 9. Additional concentration limits regarding the constituents of concern are <br /> as follows: <br /> Constituent Level Units Consideration <br /> Total Petroleum Hydrocarbons 100 µg/1 Taste and Odor <br /> Total Lead 50 µg/l Primary drinking <br /> water standard <br /> (MCL) <br /> 10. Treated wastewater may either be disposed of by subsurface injection, <br /> subsurface infiltration, surface infiltration, evaporation, land <br /> spreading, spray disposal , or reclaimed through irrigation of landscape or <br /> selected crops. <br /> 11 . This Order does not pre-empt or supersede the authority of local agencies <br /> to prohibit, restrict, or control the discharge of ground water cleanup <br /> wastewater subject to their control . <br />