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` WASTE DISCHARGE REQUIREMENTS ORDER NO. • 13- <br /> MUSCO FAMILY OLIVE COMPANY AND THE STUDLEY COMPANY <br /> WASTEWATER TREATMENT FACILITY <br /> SAN JOAQUIN COUNTY <br /> Increasing <br /> Problem and Related Constituent No Problem Problem <br /> Sodium (mg/L) <69 > 69 <br /> Chloride(mg/L) < 106 > 106 <br /> Miscellaneous <br /> NH4-N(mg/L) (for sensitive crops) <5 5-30 <br /> NO,-N(mg/L) (for sensitive crops) <5 5-30 <br /> HCO3 (mg/L) (only with overhead sprinklers) <90 90-520 <br /> PH normal range =6.5—8.4 <br /> * Assumes an EC:TDS ratio of 0.6:1 <br /> 65. The Agricultural Guidelines present the maximum EC that various crops will tolerate before <br /> experiencing percent crop reductions (i.e., 0, 10, 25, and 50%). Data below summarizes irrigation <br /> water EC data(in µmhos/cm) for crops cultivated in the vicinity of the facility at various EC: <br /> Crop 0%Reduction 10%Reduction <br /> Com (Sweet) 1,100 1,700 <br /> Peaches 1,100 1,400 <br /> Alfalfa 1,300 2,200 <br /> Hay (Barley) 4,000 4,900 <br /> 66. The Agricultural Guidelines indicate that boron sensitive crops such as stone fruit and grapes may <br /> show injury when irrigated with boron ranging from 0.5 to 1.0 mg/L and show reduced yield and <br /> vigor when irrigated with boron ranging from 1.0 to 2.0 mg/L. <br /> 67. A long-term problem facing the Sacramento-San Joaquin Delta is increasing salinity in waterways <br /> and in groundwater, a process accelerated by man's activities and particularly affected by intensive <br /> irrigated agriculture. Basin Plan policies and programs focus on controlling the rate of increase of <br /> salt in the Basin from all controllable sources, and particularly point sources of waste. The Board <br /> is presently engaged in developing a Total Maximum Daily Load for the San Joaquin River. <br /> Proactive management of waste streams by dischargers to control addition of salt through use is a <br /> reasonable expectation. <br /> LAND TREATMENT UNIT (LTU)—LAWS AND REGULATIONS <br /> 68. Successful treatment and control in the application of waste constituents to land is an inexact <br /> science highly dependent upon the constituent, soils, climate, other practices that affect the <br /> property, and sound waste management and control. The process depends upon attenuation <br /> (decomposition, immobilization, and transformation) in the soil profile and consumption from the <br /> root zone by crops to remove waste constituents. Excessive application rates for waste <br /> constituents can result in vector conditions and anaerobic waste or soil conditions that can create <br /> nuisance odor conditions...Excessive application rates can also overload the shallow soil profile <br /> and root zone to impair crops, crop waste constituent consumption, and the waste attenuation <br /> process itself, and lead to leaching of waste constituents out of the treatment zone. Excessive <br /> application can also result in dissolution of soil minerals such as calcium and magnesium. <br /> Excessive hydraulic applications, even if from use of supplemental fresh water, can flush waste <br />