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ORDER NO.R5-2003-0178 <br /> MORADA PRODUCE COMPANY <br /> LINDEN PACKING SHED <br /> SAN JOAQUIN COUNTY <br /> The September 2002 RWD included an odor control contingency plan for the wastewater storage <br /> pond. If the pond generates odors, or if the dissolved oxygen level is less than 1.0 mg/L,then an <br /> aerator will be added to the pond <br /> The depth to groundwater is approximately 95 feet below ground surface and flows to the south- <br /> southeast, although locally, groundwater depth and flow may be influenced by local pumping <br /> and irrigation patterns. A groundwater sample was collected from the on-site well that serves the <br /> facility. Nitrate as nitrogen was reported in the sample at a concentration of 4.0 mg/L. <br /> Because the facility is not yet in operation, the wastewater has not been fully characterized and <br /> chloroform could be present in the storage pond at concentrations that could degrade the <br /> underlying groundwater. However, chloroform could also volatilize from the wastewater stored <br /> in the pond. Due to the unknown potential for chloroform impacts, it is appropriate to require the <br /> Discharger to reevaluate the discharge after a year of monitoring. If chloroform, or other <br /> constituents, are present at concentrations that could degrade the underlying groundwater, then <br /> the Discharger will be required to take steps to prevent degradation. These steps could include <br /> treating the waste, using different chemicals, or lining the pond. The Discharger may also be <br /> required to install lysimeters or groundwater monitoring wells. <br /> These waste discharge requirements contain hydraulic,organic, and nutrient loading limits for the <br /> land application areas, and time schedules for preparation of an Industrial Stormwater Permit, an <br /> Operation and Maintenance Plan, and a re-evaluation of effluent quality. <br /> TRO: 12/5/2003 <br /> C;Wy Docummts\Wyels\O'BrimUNFO-Rl.dm <br />