ARCHIVED REPORTS_DRAFT ENVIRONMENTAL IMPACT REPORT

Home Browse Search

WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2004-0028 -45- WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2004-0028 -46- 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 5. There are indications that elevated temperatures in the San Joaquin River may affect If after review of the study results it is determined that the discharge has reasonable migrating Chinook salmon and other fish during portions of the year. Temperature potential to cause or contribute to an exceedance of a water quality objective this Order objectives in the Basin Plan and the Thermal Plan may not address the temperature will be reopened and effluent limitations added for the subject constituents. parameters necessary to protect migrating fish. To evaluate the effect of a thermal temperature discharge to migrating fish,the Discharger shall conduct a comprehensive The Discharger shall submit to the Regional Board on or before each compliance due date, study of the effect of its thermal discharge to migrating fish in the vicinity of the discharge the specified document or a written report detailing compliance or noncompliance with the (with particular attention being paid to those periods when River flow is lowest and/or specific date and task. If noncompliance is reported,the Discharger shall state the reasons River or effluent temperature are highest). The Discharger shall perform the study in for noncompliance and include an estimate of the date when the Discharger will be in consultation with the Department of Fish and Game,United States Environmental compliance. The Discharger shall notify the Regional Board by letter when it returns to Protection Agency,National Marine Fisheries Service,United States Fish and Wildlife compliance with the time schedule. Service,and other interested parties. 8. To determine compliance with the Groundwater Limitations,the groundwater monitoring A work plan for this study shall be completed and submitted to the Executive Officer by network shall include one or more background monitoring wells and a sufficient number of 1 September 2004. The work plan shall include a schedule for completing all work in designated monitoring wells downgradient of every treatment,storage,and disposal unit accordance with the work plan within eighteen(18)months following work plan approval that does or may release waste constituents to groundwater. All monitoring wells shall by the Executive Officer. Also,a progress report shall be submitted every six(6)months comply with the appropriate standards as described in California Well Standards Bulletin after approval of the work plan. The permit may be reopened after review of the study to 74-90(June 199 1)and Water Well Standards:State of California Bulletin 94-81 incorporate Regional Board findings and requirements as appropriate. (December 1981),and any more stringent standards adopted by the Discharger or County pursuant to California Water Code Section 13801. 6. Pollution Prevention Plan: The Discharger shall prepare a pollution prevention plan following California Water Code 13263.3(d)(3)for mercury. A work plan and time The Discharger,after one year of monitoring,shall characterize natural background quality schedule for preparation of the pollution prevention plan shall be completed and submitted of monitored constituents in a technical report,to be submitted by 1 May 2005. For each to the Executive Officer for approval by 1 August 2004. The Pollution Prevention Plan groundwater monitoring parameter/constituent identified in the Monitoring and Reporting shall be completed and submitted to the Regional Board by 1 August 2005. A progress Program,the report shall present a summary of monitoring data,calculation of the report shall be submitted every six(6)months after submittal of the work plan. Based on a concentration in background monitoring wells,and a comparison of background review of the submitted information,this Order may be reopened for addition and/or groundwater quality to that in wells used to monitor the facility. Determination of modification of limitations and requirements for these constituents. background quality shall be made using the methods described in Title 27 California Code of Regulations Section 20415(e)(10),and shall be based on data from at least four The Discharger shall submit to the Regional Board,on or before each compliance due date, consecutive quarterly(or more frequent)groundwater monitoring events. For each the specified document or a written report detailing compliance or noncompliance with the monitoring parameter/constituent,the report shall compare measured concentrations for specific date and task. If noncompliance is reported,the Discharger shall state the reasons compliance monitoring wells with the calculated background concentration. for noncompliance and include an estimate of the date when the Discharger will be in compliance. The Discharger shall notify the Regional Board by letter when it returns to If the monitoring shows that any constituent concentrations are increased above compliance with the time schedule. background water quality,the Discharger shall submit a technical report describing the evaluations results and critiquing each evaluated component with respect to BPCT and 7. SIP Study: The discharge may contain dioxins that have a reasonable potential to cause or minimizing the discharge's impact on groundwater quality. In no case shall the discharge contribute to an exceedance of water quality objectives. The Discharger shall comply with be allowed to exceed a water quality objective. This Order may be reopened and additional the following time schedule in conducting a study of these constituents potential effect in groundwater limitations added. surface waters: 9. By 31 March 2006,the Discharger shall submit a Sanitary Sewer System Operation, Task Comnliance Date Maintenance,Overflow Prevention,and Response Plan(SSS Plan)that describes the Submit Study Report for Dioxins 1 November 2004 actions designed to prevent,or minimize the potential for sanitary sewer overflows. The Discharger shall maintain the SSS Plan in an up-to-date condition and shall amend the SSS Plan whenever there is a change(e.g.in the design,construction,operation,or maintenance of the sanitary sewer system or sewer facilities)that materially affects the potential for