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Stilla ge Site Improvements The 1.5-acre stillage application site should be leveled and divided into checks or border strips running north and south. A permanent or portable gated pipe distribution header should be installed along the north end. A loading rate of 4 inches/week. should be used. This means that 0.2 acres are needed (based on 20,000 gpd) for every day of stillage production. The site should be divided into 7 strips that are separated by berms (1 foot high). Stillage should be applied to one strip (0.2 acres per day) for no more than 24 hours. If stillage is produced for more than 24 hours, the application area should be changed to a new site. Once the stillage has infiltrated the surface and dried for 7 to 10 days, the plot should be disced or. rototilled. With the infrequent stillage production, the same plot should not have to be loaded more than one day per month. Washwater System Improvements A pump should be installed in the existing washwater sump to lift the .washwater over a new fine screen. The fine screen should have openings of 0.04 inches and should be a Hycor, Dorr-Oliver, or equivalent. The screenings should be removed daily and combined with the pomace. Screened washwater should be piped along the perimeter of the existing ponds and the open ditch should be filled in and abandoned. A 4-inch plastic pipe should be adequate. The distribution pipe should have an outlet into each of the four ponds. The ponds should be leveled, ripped and disced after they are dry. The larger ponds (Ponds 3 and 4) should be divided east to west by a low berm about 1 foot high. This will result in 6 Areas for direct land application of screened washwater. Washwater should be applied to one basin for 1 to 2 days followed by 10 days of drying. The basin surface should be disced or rototilled on the tenth day of drying and prior to the next washwater application cycle. This intermittent application cycle will increase the long term loading on the basins and will avoid odor production. The loading rate should not exceed 3 inches/week. At a BOD concentra- tion of 1 ,000 mg/L this results in a BOD loading of 96 lb/acre.o d. This is a low enough loading rate to avoid odor production provided adequate drying is provided and the surface is disced or rototilled. The BOD to nitrogen ratio is high enough (30 to 1) to insure that nitrogen removal by denitrification will occur. 6 GEORGE S NOLTE AND ASSOCIATES