SITE INFORMATION AND CORRESPONDENCE CASE 2

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WASTE DISCHARGE REQUIREMS ORDER NO. • -7- PAT MITCHELL AND CALIFORNIA NATURAL PRODUCTS WASTEWATER TREATMENT AND DISPOSAL FACILITY SAN JOAQUIN COUNTY 48:39. The beneficial uses of underlying groundwater are domestic and municipal supply, agricultural supply, industrial service supply, and industrial process supply. 44-40. 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 loadings of tet l-s,l rpeiided seliar `Tae shallfie! e)Eeeed 700 i ,l y d 1 d b rBODg should not exceed 100 lbs/acre/day(average) to prevent development of nuisance conditions. 4?,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 Deuutieff. I'ateme t being daffiaged by feed b b t' iron and ffiEffiganese degrade b groundwater if the bti�r-iag nr]RoitT__'I_-oil is exeeededT 4-3-A2. Excessive application of food processing wastewater to land application areas can create obiectionable odors, soil conditions that are harmful to crops and degradation of underl)dng 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 quality will not be impacted then the Board would be required to classify the waste as a designated waste and require full containment under Title 27 of the California Code of Regulation (hereafter Title 27 ol�eetiefiable odors, ..:1 n nditions detfimentnl ton n> and degradation of de , gFoundwater-by b pefeelatinbbelew t4ie root zefie to degrade thegfeidndwatef. b. leaehin b T;t 43 State regulations pertaining to water quality monitoring for waste management units are found in Title 27, California Code of Regulations (CCR) Section 20380 et seg., (hereafter Title 27) These regulations prescribe procedures for detecting and characterizing the impact of waste constituents on groundwater. While the facility has been found exempt from Title 27 the data analysis methods of Title 27 are appropriate for determining whether the discharge complies with the terms for protection of groundwater specified in this Order.