SITE INFORMATION AND CORRESPONDENCE CASE 2

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WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2002-0071 -5- CALIFORNIA NATURAL PRODUCTS WASTEWATER TREATMENT FACILITY SAN JOAQUIN COUNTY LAND APPLICATION SYSTEM 26. Wastewater is currently discharged to two land application sites, a 9.2 acre landscaped area and a 17.6 acre land application area as shown on Attachment B; which is attached hereto and made part of the Order by reference. The wastewater application areas are termed "landscaped"if they are planted with perennial grass or other decorative plant and"land application area"if they are cropped with other plants such as wheat,barley, oats,rye, corn, alfalfa, etc. 27. In order to reduce the potential for generation of objectionable odors and to land apply the wastewater in a manner that is more protective of groundwater quality,the Discharger has proposed to increase the total land available for application from 26.8 acres to 46.3 acres. To do so,the Discharger is proposing development of an additional 3.5 acre landscaped area and a 16.0 acre land application area. 28. Wastewater will be delivered to the 16.0 acre land application area via an underground pipeline within the County right-of-way. 29. The 9.2 acre landscaped area is bermed around most of the area; areas that are not bermed will be closely monitored to prevent the generation of runoff. The 3.5 acre landscaped area will not be bermed but will be posted and closely monitored to prevent runoff. 30. To control tailwater, the 17.6 acre and 16.0 acre land application areas will be bermed. Wastewater application will be by flood irrigation. Sprinkler application of wastewater in the land application areas is acceptable if the application is in compliance with Section D, "Land Application Area Specifications" and if the land application area has been adequately prepared to receive sprinkler applied wastewater. The Discharger will grow sudan grass in the summer and a choice of barley, oats, or wheat in the winter. Other crops may be acceptable as long as the discharge complies with the Effluent Limitations. 31. Wastewater will be sprinkler or drip applied to the 3.5 acre and 9.2 acre landscaped areas. Flood irrigation of wastewater in the landscaped areas is not an acceptable application technique. A full- time groundskeeper will be responsible for making wastewater applications and ensuring that no runoff occurs. 32. The November 2001 RWD addendum and 12 March 2002 Response to Tentative WDRs presented a water balance which showed adequate land areas with capacity to accept monthly average wastewater flow of 290,000 gpd of wastewater and rainfall (using the 100-year return annual precipitation total). Because adequate land application areas are available, a wastewater storage pond is not required. The Discharger is allowed to discharge wastewater to the land application areas (not the landscaped areas) during rain events provided all requirements of the WDRs are complied with. 33. The Regional Board received odor complaints in October 1987, July 1997, July 1998, March 2000, and July 2000. The odor complaints concerned the Discharger's 17.6 acre land application area.