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ORDER NO.RI-2003-0178 -2- MORADA PRODUCE COMPANY LINDEN PACKING SHED SAN JOAQUIN COUNTY The September 2002 RWD included an odor control contingency plan for the wastewater storage pond. If the pond generates odors, or if the dissolved oxygen level is less than 1.0 mg/L, then an aerator will be added to the pond The depth to groundwater is approximately 95 feet below ground surface and flows to the south- southeast, although locally, groundwater depth and flow may be influenced by local pumping and irrigation patterns. A groundwater sample was collected from the on-site well that serves the facility. Nitrate as nitrogen was reported in the sample at a concentration of 4.0 mg/L. Because the facility is not yet in operation,the wastewater has not been fully characterized and chloroform could be present in the storage pond at concentrations that could degrade the FF underlying groundwater. However, chloroform could also volatilize from the wastewater stored in the pond. Due to the unknown potential for chloroform impacts, it is appropriate to require the Discharger to reevaluate the discharge after a year of monitoring. If chloroform, or other rconstituents, are present at concentrations that could degrade the underlying groundwater, then r the Discharger will be required to take steps to prevent degradation. These steps could include treating the waste,using different chemicals, or lining the pond. The Discharger may also be Frequired to install lysimeters or groundwater monitoring wells. These waste discharge requirements contain hydraulic, organic, and nutrient loading limits for the F land application areas,and time schedules for preparation of an Industrial Stormwater Permit, an Operation and Maintenance Plan, and a re-evaluation of effluent quality. TRO: 12/5/2003 F F F r l : F' Fill F1W\AG��A1FinaliadC�031pecemberViS'0�3-0I78in1b.A0C