ARCHIVED REPORTS_DRAFT ENVIRONMENTAL IMPACT REPORT

Home Browse Search

WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2004-0028 -37- WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2004-0028 -38- CITY OF MANTECA,CITY OF LATHROP AND DUTRA FARMS CITY OF MANTECA,CITY OF LATHROP AND DUTRA FARMS WASTEWATER QUALITY CONTROL FACILITY WASTEWATER QUALITY CONTROL FACILITY SAN JOAQUIN COUNTY SAN JOAQUIN COUNTY BODS' mg/1 30 45 1. Objectionable odors originating at the facility shall not be perceivable beyond the limits of Settleable Solids ml/1 0.2 0.5 the disposal areas or property owned by the Discharger. Five-day,20°Celsius biochemical oxygen demand. 2. As a means of discerning compliance with Pond Discharge Specification D.1,the dissolved oxygen content in the upper zone(1 foot)of wastewater in ponds shall not be less than 1.0 mg/l. 10. There shall be no standing water in the disposal area 48 hours after wastewater is applied. 3. Ponds shall not have a pH less than 6.5 or greater than 9.0. Subject to approval of the 11. Public contact with wastewater shall be precluded through such means as fences,signs,and Executive Officer,lined ponds shall not have a pH less than 6.5 or greater than 10.0. other acceptable alternatives. 4. Ponds shall be managed to prevent breeding of mosquitoes. In particular, 12. Areas irrigated with reclaimed water shall be managed to prevent breeding of mosquitoes. More specifically, a. An erosion control program should assure that small coves and irregularities are not created around the perimeter of the water surface. a. Tail water must be returned and all applied reclaimed water and any additional supplement irrigation water must infiltrate completely within a 48-hour period. b. Weeds shall be minimized. b. Ditches not serving as wildlife habitat should be maintained free of emergent, C. Dead algae,vegetation,and debris shall not accumulate on the water surface. marginal,and floating vegetation. 5. Ponds shall have sufficient capacity to accommodate allowable wastewater flow and design c. Low pressure and unpressurized pipelines and ditches accessible to mosquitoes shall seasonal precipitation and ancillary inflow and infiltration during the nonirrigation season. not be used to store reclaimed water. 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. 13. Stormwater runoff from the irrigation field shall not be discharged to any surface water Freeboard shall never be less than two feet(measured vertically to the lowest point of drainage course within 30 days of the last application of reclaimed water. overflow). 14. There shall be no irrigation or impoundment of reclaimed water within 150 feet of any E. Biosolids Disposal: domestic water well. 1. Collected screenings,biosolids,and other solids removed from liquid wastes shall be 15. All reclaimed water equipment,pumps,piping,valves,and outlets shall be appropriately disposed of in a manner approved by the Executive Officer,and consistent with marked to differentiate them from potable facilities,and these shall be of a type,or secured Consolidated Regulations for Treatment,Storage,Processing,or Disposal of Solid Waste, in a manner,that permits operation by authorized personnel only. as set forth in Title 27 California Code of Regulations,Division 2,Subdivision 1,Section 20005,et seq. Removal for further treatment,disposal,or reuse at sites(i.e.,landfill, 16. Conspicuous warning signs indicating that reclaimed water is in use shall be posted at least composting sites,soil amendment sites)operated in accordance with valid waste discharge every 500 feet,with a minimum of a sign at each corner of the parcels and at access road requirements issued by a regional water quality control board will satisfy this specification. entrances. 2. Any proposed change in biosolids use or disposal practice from a previously approved 17. Supplementing reclaimed water by connection with a domestic drinking water source or practice shall be reported to the Executive Officer and USEPA Regional Administrator at irrigation or industrial wells requires an air gap separation device. least 90 days in advance of the change. 18. Neither the treatment nor the use of reclaimed water shall cause a pollution or nuisance as 3. Use and disposal of sewage biosolids shall comply with existing Federal and State laws defined by California Water Code Section 13050. and regulations,including permitting requirements and technical standards included in 40 CFR 503. D. Pond Discharge Specifications(Land Disposal):