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WASTE DISCHARGE REQUIREN S ORDER NO.5-01-172 • EAST-SIDE WINERY DBA OAK PjlrE VINEYARDS 9 SAN JOAQUIN COUNTY 5. The Discharger shall operate all systems and equipment to maximize treatment of wastewater and optimize the quality of the discharge. 6. The Discharger's wastewater treatment system and land disposal system shall be designed, constricted, operated, and maintained to prevent inundation or washout due to floods with a 100-year return frequency. 7. No physical connection shall exist between wastewater piping and any domestic water supply or other domestic/industrial supply well without an air gap PP or approved reduced pressure device. 8. Public contact with reclaimed water shall be precluded through such means as fences, signs, and irrigation management practices. Signs with proper wording of sufficient size shall be placed at areas of access and around the perimeter of all areas used for wastewater disposal to alert the public of the use of reclaimed water. 9. The pond shall not have a pH less than 6.5 or greater than 8.5. 10.The wastewater treatment system shall have sufficient capacity to accommodate wastewater flow, groundwater infiltration, and seasonal precipitation during the rainy season. 'Design seasonal precipitation shall be based on total annual precipitation using a return period of 100 years, distributed monthly in accordance with historical rainfall patterns. 11.Freeboard in each pond shall never be less than two feet (measured vertically from the lowest point of the berm). 12.On or about 15 October of each year, available pond storage capacity shall at least equal the volume necessary to comply with Discharge Specification B.10 and B.11. 13.The pond shall be managed to prevent breeding of mosquitoes. In particular, a. An erosion control program should assure that small coves and irregularities are not created around the perimeter of the water surface. b. Weeds shall be minimized through control of water depth, harvesting, or herbicides. c. Dead algae, vegetation, and debris shall not accumulate on the water surface. C. Effluent Limitations 1. Effective 16 June 2002, the maximum total nitrogen loading to the two designated disposal areas shall not exceed the agronomic rate for plant available nitrogen (PAN) for the type of crop to be grown, as specified in the most recent edition of the Western Fertilizer Handbook. PAN shall be calculated as 100% of the total nitrogen content of the waste, unless and until the Discharger demonstrates that another proportion is technically justified, as described in Provision H.10. 2. Effective as of 16 June 2002, the maximum BODS loading to the land application area shall not exceed: a. 300 lbs/acre on any single day;