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WASTE DISCHARGE REQUIREMENTS ORDER NO, ALPINE PACKING COMPANY, INC. 3 WASTEWATER TREATMENT SYSTEM, SAN JOAQUIN COUNTY capacity, nearly all of which is unavailable as described above. The Discharger is required to further evaluate wastewater storage capacity. 15. Boiler and heat exchanger feed water is treated prior to use with a pair of alternating ion exchange water softeners. The water softeners are regenerated in place. Regeneration brine is discharged to the wastewater ponds. The Discharger estimates that 100 to- '150 pounds of sodium chloride is used for regeneration and operational purposes per five day work week. 16. WDRs Order No. 92-054 Finding No. 5 requires salts used in the brining process to be completely used in the brining process. The Discharger shall continue to prevent discharge of brines to the process wastewater system. 17. As shown on Attachment B, stormwater is discharged to a stormwater control ditch that is pumped to the land application area when climatic conditions allow. Tailwater or stormwater that runs off the land application area is discharged to a tailwater collection ditch which discharges to the stormwater control ditch. Because stormwater is mixed with industrial wastewater, disposal of the water to surface water drainage courses is not acceptable. The Discharger is required to evaluate whether it can fully contain its stormwater/wastewater mixture. LAND APPLICATION SYSTEM 18. Wastewater is flood irrigated on a 14-acre land application area, as shown on Attachment B. The land application area is bermed on the north, east, and south sides. A tailwater collection ditch is at the west side of the land application area. An additional 66-acres of property is available for land application but is presently used as a buffer between the land application areas and the surrounding residential developments. Application of wastewater to the additional 66-acre areas of the land application area is acceptable pending submittal of a technical report describing improvements, installation of additional groundwater monitoring wells, and approval of the Executive Officer. 19. Sprinkler irrigation of wastewater is acceptable if it complies with the "Land Application Requirements" of this Order, and if the land application area has been adequately prepared to receive wastewater. 20. The Discharger submitted a Cropping Plan for the land application area on 24 April 2001. The plan presents a nitrogen balance and recommends planting alfalfa, clover, corn, and grass. The plants will take up all the nitrogen in the wastewater. Crops other than those presented in the Cropping Plan are acceptable as long as they take up all nitrogen applied, as described by the Effluent Limitations and the Land Application Area Requirement. 21. Based on the anticipated quality of wastewater and the flow rate for the year 2001 (7,860,700 gallons), the following loading rates to the 14 acre land application system are anticipated. Average Total Pounds Analyte Concentration (mg/1) Annual Basis lbs/ac lbs/ac-dav Total Kjeldahl Nitrogen '" 26 1,696 121 0.33 Total Dissolved Solids 1,235 80,576 5755 15.77 CAProjat FflsLSitesWpinc Packing\WDR.doc