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WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2002-0148 -4- MUSCO FAMILY OLIVE COMPANY AND THE STUDLEY COMPANY WASTEWATER TREATMENT AND LAND DISPOSAL FACILITY SAN JOAQUIN COUNTY Constituent Units Wastewater Total Dissolved Solids (TDS) mg/1 4,737 Dissolved Inorganic Solids (DIS) mg/1 2,718 Total Nitrogen mg/1 611 pH Standard 6.4 Chloride mg/1 415 Sodium mg/1 739 All nitrogen was present as total Kjeldahl nitrogen;nitrate was not detected in the wastewater samples. LAND APPLICATION SYSTEM 21. Wastewater is currently discharged to the land application areas shown on Attachment C, which is attached hereto and made part of the Order by reference. The land application areas, and their approximate acreages are listed below. Construction of the 84-million gallon storage pond reduced the available land application area of Field 55 West and Field 55 East by a total of approximately 20 acres. The presence of the septic system prevents use of half of Evap North. Useable Land Application Area Acreage Comments 18 North 18 Fairly level Spur North 4.9 Fairly level Evap East 1.3 Fairly level, adjacent to Hwy 580 Evap South 4.9 Moderate slope Check Field 8.9 Level terraces Evap West 4.9 Fairly level Evap North 1.0 Fairly level South Ridge 22.2 Moderate slope Park West 7.5 Moderate to slight slope Field 55 35' Moderate to severe slope Field 95 95 Moderate to severe slope Available acreage estimated by staff is less than the total area of 55 acres listed in the RWD due to construction of 84-million gallon storage pond. 22. A natural surface water drainage exists in the land application areas. The Discharger will construct tailwater collection ditches to prevent tailwater from draining into the surface water drainage. Collected tailwater will be pumped to the new 84-million gallon storage pond or the 1-million gallon settling pond. The Discharger has proposed allowing uncontaminated stormwater to bypass the storage pond. However,until the Discharger can propose bypass criteria that is approved by the Executive Officer,all tailwater/stormwater draining from the land application areas shall be collected and stored in either the 1-million gallon settling or the 84-million gallon storage pond. 23. Wastewater application will be by sprinkler irrigation. The RWD states the Discharger will double crop Sudan grass and also grow winter barley. Other crops the Discharger is considering are Bermuda grass and salt tolerant alfalfa(reportedly under development in agricultural laboratories). The