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WASTEWATER PRETREATMENT A schematic showing the proposed routing and relative volumes of wastewater flows through pretreatment facilities is shown in Figure 1 . The most significant changes involve the use of additional mud bins for settling, the use of the white tank for final settling and equalization, and the diversion of relatively clean waters around the pretreatment facilities. Wastewater from the bulk dump flume will be directed to 2 or 3 (depending upon flow rate) mud settling bins. Most soil particles will settle out in these bins. Some of the overflow from the bins will be recycled back to the dump flume, while most will be directed to the white mud settling tank. Plant wastewater will be directed to the dissolved air flotation tank (DAF) for the separation of organic and inorganic solids. Skimmed and settled solids from the DAF will be directed to a separate mud bin. Effluent from the DAF tank will flow to the white mud settling tank. Cooling tower and boiler water will be sent directly to the white mud settling tank, thereby bypassing approximately 25% of the total plant flow around most of the pretreatment system. From the white mud settling tank, wastewater will be pressurized and conveyed to the irrigation fields through a new 12 inch PVC mainline. Overflow from the white mud settling tank will flow into the old standpipe and be pumped to the irrigation fields through the existing 6 inch mainline. In the unlikely event that plant flows exceed the combined capacities of the 12 inch and 6 inch systems, excess wastewater will flow to the emergency storage pond. The capacity of the existing DAF unit is 440,000 gpd based on industry standards for a unit of its size (14 ft diameter) . Under the new wastewater piping configuration, approximately 45% of the total wastewater is expected to flow through the DAF unit. Therefore, the existing DAF unit should be adequate until total wastewater flow begins to exceed 970,000 gpd. A second DAF unit of roughly equal size is tentatively planned for installation before the 1992 season to provide adequate capacity for the expected DAF portion of the 1 .5 Mgal/d ultimate total design flow. WINTER SEASON OPERATIONS In the "Report of Waste Discharge", November - May sauce operations were listed as generating approximately 25,000 - 75,000 gallons per day. Based on data from a pilot run of sauce operations this past winter, 30 day average flow rates are expected to be below 40,000 gpd over the next five years. Daily peak flows are expected to remain below 75,000 gpd. Sauce operations will be performed on a five day per week basis. BOD concentrations during the pilot run averaged 700 mg/L and are expected to remain below summertime levels (approx. 1300 mg/L) . A water balance for land application of wastewater during the entire year is shown in Table 1. In January, the amount of deep percolation needed in a 2 RP102-0