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WASTE DISCHARGE REQUIREMENTS ORDER NO. -3 - <br /> DISCHARGE <br /> 3 -DISCHARGE OF TREATED GROUNDWATER <br /> FORWARD LANDFILL <br /> FORWARD INC.AND ALLIED WASTE INDUSTRIES <br /> SAN JOAQUIN COUNTY <br /> * Average of data from the 2001 and 2002 annual samples. <br /> The available data indicates that treated groundwater quality is not a threat to groundwater <br /> quality and discharge to an infiltration pond is appropriate. <br /> 10. The California Water Code Section 13173(b), defines designated waste as: nonhazardous <br /> waste that consists of or contains pollutants that, under ambient environmental conditions <br /> at a waste management unit, could be released in concentrations exceeding applicable <br /> water quality objectives or that could reasonably be expected to affect beneficial uses of the <br /> waters of the state as contained in the appropriate state water quality control plan. <br /> 11. California Code of Regulations, Title 27, Section 20090(b), exempts from the requirements <br /> of Title 27, discharges of wastewater to land if the following conditions are met: <br /> (1) the applicable RWQCB has issued WDRs,reclamation requirements, or waived such <br /> issuance; <br /> (2) the discharge is in compliance with the applicable water quality control plan; and <br /> (3) the wastewater does not need to be managed according to Chapter 11, Division 4.5, <br /> Title 22 of this code as a hazardous waste. <br /> Waste Management Units <br /> 12. Treated water is discharged to an unlined infiltration basin. Treated water infiltrates into <br /> groundwater beneath the pond creating a groundwater mound. The groundwater mound <br /> acts as a barrier to contaminated groundwater that currently bypasses the extraction well <br /> system. The infiltration basin acts to improve the capture efficiency of the groundwater <br /> extraction system. <br /> 13. The infiltration basin is located approximately 350 feet north of the east half of the Waste <br /> Management Unit 1 footprint. The basin is triangular in shape, approximately 9 acres and <br /> has been excavated to approximately 12 feet below grade. <br /> 14. Hydraulic conductivity of surface soils in the area of the infiltration basin are believed to be <br /> approximately 1 X 10"5 cm/sec. <br />