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AMENDMENT OF WASTE DISCHARGE REQUIREMENTS -3- AMENDMENT OF WASTE DISCHARGE REQUIREMENTS -4- RESOLUTION 4- RESOLUTION NO.R5-2005-0110 RESOLUTION NO.R5-2005-0110 CITY OF MANTECA CITY OF MANTECA WASTEWATER QUALITY CONTROL FACILITY WASTEWATER QUALITY CONTROL FACILITY SAN JOAQUIN COUNTY SAN JOAQUIN COUNTY disposal of biosolids to land. However,the Discharger has since changed biosolids disposal biosolids monitoring and add a monthly monitoring requirement for oil and grease. The City of practices and currently hauls biosolids to a landfill. The 40 CFR Part 503 biosolids regulations Manteca,its agents,successors and assigns,in order to meet the provisions contained in Division 7 of only apply for biosolids applied to land,so the monitoring and reporting requirements for the California Water Code and regulations adopted thereunder,and the provisions of the Clean Water biosolids can be reduced when the Discharger hauls biosolids to the landfill. This Resolution Act and regulations and guidelines adopted thereunder,shall comply with Amended Order No.R5- amends MRP Order No.R5-2004-0028 for biosolids monitoring. The reduction in biosolids 2004-0028: monitoring is consistent with the antidegradation provisions of 40 CFR section 131.12 and State Water Resources Control Board Resolution No.68-16. Any impact on existing water 1. Table 15 is added to the Information Sheet for Order No.R5-2004-0028,and supercedes the quality will be insignificant. needed dilution credit calculations for bromodichloromethane and dibromochloromethane in Table 12. Table 16 is added to the Information Sheet for Order No.R5-2004-0028,and 10. WDR Order No.R5-2004-0028 contains final effluent limitations for oil and grease. However, supercedes the effluent limitation calculations for bromodichloromethane and due to an omission,MRP Order No.R5-2004-0028 does not contain a requirement for effluent dibromochloromethane in Table 13. Table 15 and Table 16 are included in Attachment A to monitoring of this parameter. To demonstrate compliance with the effluent limitations,the this Resolution. Discharger has been evaluating the effluent monthly for oil and grease and reporting the results in the Discharger self-monitoring reports(SMRs). In review of SMRs since 1 January 2000, 2. Effluent Limitations B.1 is amended as follows,replacing the effluent limitations for the Discharger has maintained compliance with the effluent limitations for oil and grease. This bromodichloromethane and dibromochloromethane in Order No.R5-2004-0028: Resolution amends MRP Order No.R5-2004-0028 to include a requirement for monthly oil and grease monitoring. Monthly Weekly 1-Hour Daily Constituents Units Average Average Average Maximum 11. The action to adopt or amend an NPDES permit is exempt from the provisions of Chapter 3 of Bromodichloromethane gg/1 30 --- --- 47 the California Environmental Quality Act(CEQA)(Public Resources Code section 21000,et seq.),requiring preparation of an environmental impact report or negative declaration in lb/days 1.7 --- --- 2.7 accordance with Section 13389 of the California Water Code. Dibromochloromethane Ag/1 7 --- --- 16 12. The Regional Board has notified the Discharger and interested agencies and persons of its lb/day' 0.41 --- --- 0.93 intent to amend waste discharge requirements for this discharge and has provided them with an opportunity for a public hearing and an opportunity to submit their written views and 3 Based upon a design treatment capacity of 6.95 mgd. recommendations. 3. Effluent Limitations B.2 is amended as follows,replacing the effluent limitations for 13. The Regional Board,in a public meeting,heard and considered all comments pertaining to the bromodichloromethane and dibromochloromethane in Order No.R5-2004-0028: discharge. Monthly Weekly 1-Hour Daily 14. This Order shall amend WDR Order No.R5-2004-0028,NPDES No.CA0081558,pursuant to Constituents Units Average Average Average Maximum Section 402 of the CWA(33 U.S.C.section 1342),and amendments thereto,and shall take Bromodichloromethane gg/1 30 --- --- 47 effect upon the date of hearing,provided EPA has no objections. lb/day' 2.0 --- --- 3.2 Dibromochloromethane 1g/1 7 --- --- 16 lb/day' 0.47 --- --- 1.1 IT IS HEREBY ORDERED that Order No.R5-2004-0028 is amended solely to add Table 15 and Table 16 to the Information Sheet,change Effluent Limitations B.1,B.2,and B.3 for 3 Based upon a design treatment capacity of 8.11 mgd. bromodichloromethane and dibromochloromethane,add Provisions H.26,modify Finding 36 for bromodichloromethane and dibromochloromethane,modify Section 3 of the Information Sheet regarding biosolids management practices,and amend MRP Order No.R5-2004-0028 to modify