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t } 4 WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2002-0225 ALPINE PACKING COMPANY,INC. 3 WASTEWATER TREATMENT SYSTEM, SAN JOAQUIN COUNTY I 14. .As part of the RWD, the Discharger submitted a water balance; however, it did not evaluate storage requirements for seasonal conditions when wastewater could not be applied to land. Staff estimated a wastewater flow rate into the ponds of approximately 750,000 gallons per month (25,000 gallons per day[gpd]}, and believe storage of wastewater will likely be required for the months of December, January, and February. The Discharger's RWD identified approximately 1,538,000 gallons of total pond storage capacity, nearly all of which is unavailable as described above. The Discharger is required to further evaluate wastewater storage capacity and propose a :method to fully comply with the terms of this Order. 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 workweek. k 16. Finding No. 5 of WDRs Order No. 92-054 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. .; LAND APPLICATION SYSTEM 17. Wastewater is flood irrigated on a 14-acre land treatment unit, as shown on Attachment B. The land treatment unit is bermed on the north, east, and south sides. A tailwater collection ditch is at Ethe west side of the land treatment unit. An additional 66-acres of property is available for land treatment but is presently used as a buffer between the land treatment units and the surrounding residential developments. Application of wastewater to the additional 66-acre areas is acceptable Pending submittal of a technical report describing improvements, installation of additional groundwater monitoring wells, and approval of the Executive Officer. 18. Sprinkler irrigation of wastewater is acceptable if it complies with the "Land Treatment Unit Requirements of this Order, and if the land treatment unit has been adequately prepared to receive wastewater. 19. The Discharger submitted a Cropping Plan for the land treatment unit on 24 April 2001. The plan ',presents a nitrogen balance and recommends planting alfalfa, clover, corn, and grass. The plants €jwill 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 Treatment Unit Requirements. 20. 0ased on the anticipated quality of wastewater and the average flow rate from January 2001 to lAugust 2002, the following loading rates to the 14-acre land treatment system are anticipated. Average Total Pounds Anal e Concentration(my/l) Annual Basis lbs/ac-year lbs/ac-day Total Kjeldahl Nitrogen 27 2,774 198 0.5 Fixed Dissolved'Solids 1,280 131,035 9,360 25.6 Biochemical Oxygen Demand 108 10,950 782 x 2.2 F �j `