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WASTE DISCHARGE REQUBNTS ORDER NO. J -4- GOLDSTONE LAND COMPANY,LLC AND KURT KAUTZ BEAR CREEK WINERY SAN JOAQUIN COUNTY 21. The 5 April 2002 RWD addendum presented a water balance which showed adequate land areas with capacity to accept monthly wastewater flow and rainfall (using the I00-year return annual precipitation total). Because adequate LTUs are available, a wastewater storage pond is not required. The Discharger is allowed to discharge wastewater to the LTUs during rain events provided all requirements of the WDRs are complied with. PROPOSED MODIFICATIONS TO WASTEWATER SYSTEM 22. The Discharger proposes to convert the existing 12-acre rapid infiltration system to a slow rate land application system. Crops will be planted and wastewater will be applied at agronomic rates for water and nutrient uptake. 23. For the existing system, the 12-acre LTU will be planted with a winter grain crop and will receive wastewater only from November through May. An additional 57 acres of existing vineyards (Vineyards 1, 2, and 3, as shown on Attachment B1) will be irrigated with process wastewater during March through October. When the Current Area is developed or if needed to meet loading requirements, the proposed LTUs will be developed as needed. The following LTUs are existing or proposed: Land Area Acreage Crop Status Soil Twe Current Alea' 12 acres Winter Grain Existing Stockton/Tokay Vineyard No. 1 20 acres Grape Vines Existing Stockton/Tokay Vineyard No. 2 18 acres Grape Vines Existing Stockton Vineyard No. 3 19 acres Grape Vines Existing Stockton/Tokay Vineyard No. 4 28 acres Grape Vines Proposed Tokay Vineyard No. 5 38 acres Grape Vines Proposed Stockton/Tokay/Hollenbeck Vineyard No. 6 50 acres Grape Vines Proposed Stockton 1' Planned for removal with the winery expansion. 24. The Discharger's water balance for the proposed modifications shows that the existing system has sufficient capacity to accommodate the current wastewater flow and design seasonal precipitation for a 100-year return period. However, to comply with the requirements of this Order, the Discharger must closely monitor the LTUs and apply wastewater to cropped areas carefully to avoid standing water and avoid overloading the LTUs with BOD or nutrients. 25. The RWD presents loading rates that will result from the wastewater application; approximately 24 lbs/ac-day of BOD and 210 lbs/ac-year of nitrogen will be applied. 26. Because the Discharger is planning to develop the LTUs (Vineyards 4 -6) as needed, Provision G.2.b requires the submittal of a technical report prior to initiating application of wastewater to the new LTUs. 27. Based on the salt tolerance of the proposed crops and the character of the wastewater, the Discharger believes that the proposed systems modification will not harm the vineyards or the 12-acre winter grain parcel. V,� _Jo um Non I5'SU 0birnT jcn Files\ CTmk\WDR.d