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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER NO. 90-312 WASTE DISCHARGE REQUIREMENTS FOR LOCKEFORD COMMUNITY SERVICES DISTRICT WASTEWATER TREATMENT AND DISPOSAL SAN JOAQUIN COUNTY The California Regional Water Quality Control Board, Central Valley Region, (hereafter Board) finds: 1. Lockeford Community Services District (hereafter Discharger) submitted a Report of Waste Discharge, dated 24 November 1986, and supplemental information dated 16 December 1987, 5 February 1990, and 15 August 1990. 2. The treatment facility is in Section 31 , T4N, R8E, MDB&M, with surface water drainage to Bear Creek. The property (Assessor' s Parcel Nos. 053- 030-39 and 053-030-510) is owned by Lockeford Community Services District. The land used for irrigation is owned by Albert and Marianne Warmerdam. 3. The Board, on 24 June 1977, adopted Waste Discharge Requirements Order No. 77-129 (NPDES Permit No. ' CA0079812) which prescribed requirements for a winter discharge of a maximum of 0.22 million gallons per day (mgd) of treated effluent to Bear Creek. Order No. 77-129 also prescribed effluent requirements for irrigation of feed and forage crops during the summer months (Reclamation Requirements Order No. 79-74) . Enforcement Order No. 77-130 was issued for implementation of the facilities to meet surface water discharge requirements according to a time schedule. However, discharge to Bear Creek never occurred. 4. The Discharger discharges an average of 220,000 gallons per day (gpd) of treated domestic waste to ponds with subsequent irrigation of 115 acres feed and forage crops. The treatment facility includes two facultative ponds, two storage ponds, and a remote storage pond. 5. The Discharger proposes to discharge a maximum of 710,000 gpd of treated domestic waste and proposes to convert a facultative pond to an aeration treatment pond via the addition of five 7.5-HP directional aerators; convert the other facultative pond to a storage pond; and expand the remote storage pond. There will be no discharge to surface waters. Seasonal irrigation will continue (Reclamation Requirements Order No. ) . 6. Present waste discharge requirements established by the Board are neither adequate nor consistent with plans and policies of the Board.