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WASTE DISCHARGE REQUIREMENTS -3- SAN JOAQUIN COUNTY HOUSING AUTHORITY, MIGRANT FARM WORKER CAMP-HARVEY LAND AND CALIFORNIA DEPARTMENT OF HOUSING AND COMMUNITY DEVELOPMENT, OFFICE OF MIGRANT SERVICES SAN JOAQUIN COUNTY B. Discharge Specifications: 1. The monthly average dry weather discharge flow shall not exceed 0.04 million gallons/day. 2. Objectionable odors originating at this facility shall not be perceivable beyond the limits of the wastewater treatment and disposal areas or property owned by the Discharger. 3. As a means of discerning compliance with Discharge Specification No. 2, the dissolved oxygen content in the upper zone (1 foot) of wastewater in ponds shall not be less than 1.0 mg/l. 4. The treatment facilities shall be designed, constructed, operated, and maintained to prevent inundation or washout due to floods with a 100-year return frequency. 5. Ponds shall.not have a pH less than 6.5 or greater than 8.5. 6. Ponds shall be managed to prevent breeding of mosquitos. 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. 7. Public contact with wastewater shall be precluded through such means as fences, signs, and other acceptable alternatives. 8. Ponds shall have sufficient capacity to accommodate allowable wastewater flow and design seasonal precipitation and ancillary inflow and infiltration during the nonirrigation 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. Freeboard shall never be less than two feet(measured vertically to the lowest point of overflow).