SITE INFORMATION AND CORRESPONDENCE CASE 2

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WASTE DISCHARGE REQUIREMENTS ORDER NO. -6- PAT MITCHELL AND CALIFORNIA NATURAL PRODUCTS WASTEWATER TREATMENT AND DISPOSAL FACILITY SAN JOAQUIN COUNTY 33. Stormwater collected at paved areas and loading docks is piped to the wastewater treatment system. Stormwater which falls on buildings is discharged to stormwater retention basins. 34. The majority of industrial activities at the facility are not exposed to storm water, because they are housed indoors. CNP is coded under the Standard Industrial Classification system as 2099, Food Preparations,Not Elsewhere Classified. Therefore, for the purpose of coverage under the NPDES General Permit for Discharges of Storm Water Associated with Industrial Activity,CNP is considered to be a Conditional Industry. The Discharger has completed and filed a Notice of Non-Applicability that certifies that storm water associated with industrial activity does not discharge to waters of the United States. This stormwater is treated and disposed of with process wastewater. 35. Surrounding land uses are primarily industrial, agricultural, and residential. 36. The Board adopted a Water Quality Control Plan, Fourth Edition, for the Sacramento River and San Joaquin River Basins (hereafter Basin Plan), which contains water quality objectives for all waters of the Basin. These requirements implement the Basin Plan. 37. Surface water drainage is to the San Joaquin River. 38. The beneficial uses of the San Joaquin River are municipal and agricultural supply, industrial process and service supply, contact and other noncontact recreation,warm and coldwater freshwater habitat,warm and cold migration habitat, warm water spawning,wildlife habitat, and navigation. 39. The beneficial uses of underlying groundwater are domestic and municipal supply, agricultural supply, industrial service supply, and industrial process supply. 40. According to Pollution Abatement in the Fruit and Vegetable Industry, published by the United States Environmental Protection Agency(US EPA Publication No. 625/3-77-0007) (hereafter Pollution Abatement), in applying food-processing wastewater to land for biological treatment, the loading of BODS should not exceed 100 lbs/acre/day(average) to prevent development of nuisance conditions. 41. Acidic soil conditions can be detrimental to land treatment system function, and may also cause groundwater degradation. If the buffering capacity of the soil is exceeded and soil pH decreases below 5, naturally occurring metals (including iron and manganese) may dissolve and degrade underlying groundwater. Pollution Abatement recommends that water applied to crops have a pH within 6.4 to 8.4 to protect crops from damage by food processing wastewater. Near-neutral pH is also required to maintain adequate active microbial populations in the soil. 42. Excessive application of food processing wastewater to land application areas can create objectionable odors, soil conditions that are harmful to crops, and degradation of underlying groundwater by overloading the shallow soil profile and causing pollutants (organic carbon, nitrate, other salts, and metals) to percolate below the root zone. If sufficient information becomes available, this Order may be revised to increase or further reduce loading rates as appropriate. If the Discharger is unable to modify its waste stream or disposal methods such that groundwater rwq.m.s..ri x�nm...cuax�awv:n�