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WASTE DISCHARGE REQUIREMENTS ORDER NO. -S- MORADA PRODUCE COMPANY LINDEN PACKING SHED SAN JOAQUIN COUNTY 28. Because the wastewater has not been fully characterized and because chloroform could exceed water quality objectives in the groundwater, it is appropriate to require the installation of groundwater monitoring wells and the monitoring of shallow groundwater conditions.;It is also appropriate to require the Discharger to reevaluate the discharge after a year of monitoring both the wastewater effluent and groundwater conditions. SITE SPECIFIC CONDITIONS 29. Local land use consists of agricultural, industrial, residential, and educational. The topography of the surrounding area is level. 30. The land application areas are located outside the 100-year flood zone. 31. The average annual total precipitation for this area of San Joaquin County is 15.28 inches. The 100-year annual total precipitation for this area is 26.65 inches. The peak monthly 100-year precipitation of 5.82 inches occurs in January. 32. Soil borings were drilled at the facility in September 2001 for a geotechnical investigation and in November 2001 as part of RWD preparation. The boring logs describe subsurface soil as sand, silt, and clay mixtures. The deepest borings were drilled in November 2001 to 46.5 feet below the ground surface. No groundwater was encountered in any of the borings. 33. Surface soil in the land application area consists of Hollenbeck Silty Clay. The surface soil possesses a low infiltration rate(0.06 to 0.2 in/hr). 34. Surface water drainage is to Mormon Slough, a tributary of the Calaveras River. BASIN PLAN, BENEFICIAL USES, AND REGULATORY CONSIDERATIONS 35. The Water Quality Control Plan for the Sacramento River and San Joaquin River Basins, Fourth Edition (hereafter Basin Plan) designates beneficial uses, establishes water quality objectives, contains implementation plans and policies for protecting waters of the basin, and incorporates by reference plans and policies adopted by the State Water Resources Control Board. Pursuant to Section 13263(a) of the California Water Code, waste discharge requirements must implement the Basin Plan. 36. The beneficial uses of the Calaveras River(from New Hogan Reservoir to the Sacramento San Joaquin Delta) are municipal and domestic supply; agricultural supply; industrial process supply; water contact recreation; non-contact water recreation; warm freshwater habitat; cold freshwater habitat; migration of aquatic organisms; spawning, reproduction, and/or early development; and wildlife habitat. 37. The beneficial uses of underlying groundwater are municipal and domestic supply, agricultural supply, industrial service supply, and industrial process supply.