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WASTE DISCHARGE REQUIREMENTS ORDER NO. R5-2010-0123 -4- H.M. HOLLOWAY, INC. H.M. HOLLOWAY SURFACE MINE LANDFILL PROJECT KERN COUNTY 22. First encountered groundwater also exceeds several agricultural water quality limits, including those for chloride, molybdenum, selenium, EC, and TDS. 23.Due to the nature of the occurrence of the groundwater in discreet sandy-lenses (see Finding No. 19), there is no discernable direction of groundwater flow, groundwater gradient, or groundwater velocity. 24.Waste constituents have not been detected above background concentrations in groundwater since monitoring began in 1995. WASTE CLASSIFICATION AND UNIT CLASSIFICATION 25.The Discharger disposes of nonhazardous solid wastes (see Finding Nos. 3 and 5) as defined in Section 20164 of Title 27. 26.Auto shredder waste typically contains concentrations of heavy metals and polychlorinated biphenyls (PCBs) in excess of total and soluble threshold limit values established for classification as hazardous waste in accordance with Title 22, California Code of Regulations, Section 66001 et seq. (Title 22). However, auto shredder waste characterized as hazardous, and whose generators have received approval from the Department of Toxic Substances Control in accordance with 66260.200(f) of Title 22, can be managed as a nonhazardous waste. 27.Waste determined by the Department of Toxic Substances Control for management as nonhazardous waste in accordance with. 66260.200(f) of Title 22, is classified as `designated' waste in accordance with Section 13173(a) of the California Water Code. 28.Section 20200(a)(1) of Title 27 allows the discharge of `designated' waste to waste management units other than Class II units, provided that the discharger establishes to the satisfaction of the regional water board, that the waste presents a lower risk of water quality degradation than indicated by its classification. 29. During separation of metallic materials from automobile shredder waste, the non- metallic portion undergoes a treatment process that stabilizes any heavy metals that are still present and results in a less reactive waste. 30.Treated auto shredder waste accepted for disposal has consistently contained concentrations of soluble PCBs, soluble metals, and volatile organic compounds that, based upon the site characteristics (see Finding Nos. 7, 8, 11, 20, 21, and 22), present a lower risk of water quality degradation at this site than indicated by its classification as a `designated' waste. 31.The site characteristics where the Units are located (see Finding No. 8) meet the siting criteria for a new Class III landfill contained in Section 20260(a) and (b)(1) of