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WASTE DISCHARGE REQUIREMENTS ORDER NO. - 13- MORADA PRODUCE COMPANY LINDEN PACKING SHED SAN JOAQUIN COUNTY evaluation of groundwater quality upgradient (and out of the influence of wastewater application) and downgradient at the pond and land application area. Monitoring wells shall be constructed to yield representative samples from the uppermost layer of the uppermost aquifer and to comply with applicable well standards. The workplan shall be consistent with, and include the items listed in, the first section of Attachment C, "Items to be Included in a Monitoring Rd'ell Installation Workplan and a Monitoring Well Installation Report of Results. " d. By 5 January 2004, the Discharger shall submit an Operation and Maintenance (0&,M) Plan for the wastewater treatment facility wastewater storage pond and land application area. The O&M Plan shall instruct field personnel on how to manage the day-to-day discharge operations to comply with the terns and conditions of this order and how to make field adjustments, as necessary, to preclude nuisance conditions (e.g., standing water, runoff from land application areas, and objectionable odors from ponded wastewater). It shall also include a nuisance condition troubleshooting flowchart and a description of notification requirements if a surface water discharge occurs. Operating persormel shall keep a copy of the O&M Plan at the facility for reference. Key operating personnel shall be familiar with its contents. e. By 4 June 2004, the Discharger shall submit a Groundwater Well Installation Report. The report shall be consistent with, and include the items listed, in the second section of Attachment C. f. By 3 September 2005, the Discharger shall submit an Effluent and Groundwater Quality Study Report. For each groundwater monitoring parameter/constituent identified in the MRP, the report shall present a sununary of monitoring data, calculation of the concentration in background monitoring wells, and comparison of background groundwater quality to that in wells used to monitor the land application area and wastewater pond. Determination of background quality shall be made using the methods described in Title 27, Section 20415(e)(10), and shall be based on data from at least four consecutive quarterly(or more frequent) groundwater monitoring events. For each monitoring parameter/constituent, the report shall compare measured concentrations for compliance monitoring wells with the calculated background concentration. The report shall also contain a summary of effluent quality data and shall evaluate whether the continued discharge of wastewater to the unlined pond has the potential to degrade water quality. If the Groundwater Quality Study Report shows that the wastewater discharge has impacted or is likely to impact groundwater quality, then upon request by the Executive Officer the Discharger shall submit Groundwater Mitigation Plan which shall evaluate contaminant control alternatives, describe a preferred alternative, and proposed a timeline to meet the Groundwater Limitations of this Order. The selected contaminant control alternative must comply with State Water Resources Control Board Resolution No. 68-16 and be consistent with the most recent Basin Plan.