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'." <br />such as notification to current and future landowners regarding risks of Installing production <br />wells shall be implemented as part of the local well permitting process. <br />j. 40 (E.9) <br />Proposed as Part of the Project: <br />The applicant has agreed to Incorporate the conditions detailed in the discussion of Impact <br />E.1, above. <br />Aeration and Treatment of Chlorinated Hydro-carbon Contaminated Solis: For chlorinated <br />hydrocarbon-contaminated soils, the on-site treatment of contaminated soils by aeration will <br />be managed so as to minimize exposure to on-site employees as well as off-site residents. <br />Volumes of soils'received, time of storage, and/or the types of contaminants and levels of <br />contamination present will all be limited to assure exposure risks are no greater than 10-6. <br />The following limitations apply: <br />Acreage of Chlorinated Hydrocarbon-Contaminated Soil Treatment -0.5 acres <br />Concentration of Contaminants in mg/kg: <br />Volatile Organic Compounds <br />Benzene -5.0 x 10-1 <br />Toluene-6.9x 10-1 <br />Ethylbenzene -9.9 x 102 <br />Xylene-1.3 x 104 <br />Chlorinated Hydrocarbons <br />Trichloroethylene -1.0 <br />Perchloroethylene.,.. 1.0 x 101 <br />1,2 Dichloroethane -2.0 x.1 0-1 <br />1,1 Dichloroethane -1.0 x 10-2 <br />1,1.1 Tlichloroethane -1.0 x 101 <br />Methylene Chloride -1.0 <br />PAHs (carcinogenic) -7.5 x 101 <br />PCBs-1.0x 101 <br />PCDDlFs -3.0 x 10-5 <br />Cresol-4.0 x 103 <br />Metals <br />Arsenic-5.0x 101 <br />Beryllium -7.5 <br />Cadmium -1.0 x 101 <br />Chromium III -4,0 x 102 <br />Copper -2.2 x 102 <br />Lead -5.0 x 101 <br />Mercury -2.0 <br />Nickel-2.0 x 102 <br />Zinc-9.2x 101 <br />To mange both on-and off-site impacts due to the on-site aeration or treatment of <br />contaminated soils, the concerrtration of chlorinated hydrocarbons in the soil will be restricted <br />to lower levels than those assumed in the heatth risk assessment contained in the Forward <br />Final EIR (1993). <br />San Joaquin County <br />Community Development <br />UP-OO-?, ER-00-2IForward, Inc. <br />Page 10