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Reissued Waste Discharge Requirements General Order R5-2013-0122 6 Existing Milk Cow Dairies Order, the Central Valley Water Board requested monitoring at 80 dairies with poor waste management practices in the Tulare Lake Basin. This monitoring has also shown groundwater impacts under many of the dairies, including where groundwater is as deep as 120 feet and in areas underlain by fine-grained sediments. 22. Groundwater monitoring is the most direct way to determine if management practices at a dairy are protective of groundwater, Monitoring and Reporting Program R5-2013-0122 (MRP), which is attached to and made part of this Order, requires groundwater monitoring to determine if a dairy is in compliance with the groundwater limitations of this Order. 23. Under the MRP, Dischargers have the option of either implementing individual groundwater monitoring or participating in a Representative Monitoring Program (RMP) to identify whether or not their specific management practices are resulting in adverse impacts to groundwater (i.e., whether the discharge is in compliance with the groundwater limitations of this Order). Extensive long-term monitoring is needed to document which dairy waste management practices are protective of groundwater, and what effect these management practices will have on groundwater under a variety of different site conditions. a. Dischargers implementing individual monitoring must submit the following reports to the Board's Executive Officer: Annual Reports: Dischargers who have elected to perform individual groundwater monitoring must submit annual groundwater monitoring reports to the Executive Officer. These annual reports provide a summary of the analytical data collected to date and an evaluation of the groundwater monitoring program's adequacy to assess compliance with the Order, including whether the data provided are representative of conditions upgradient and downgradient of the wastewater management area, production area, and land application area of the dairy facility. Summary Report: In addition to submittal of annual reports, the MRP also requires that Dischargers conducting individual groundwater monitoring submit a summary report six (6) years after initiating sampling. The summary report must provide a detailed assessment of the monitoring data, and must include an evaluation of whether site activities associated with operation of the wastewater retention ponds, production area, or land application areas have impacted groundwater quality. The summary report must include a discussion on implementation of changes in management practices and/or activities that are being taken and an evaluation of progress in complying with Groundwater Limitation F.1 of the Order. b. Dischargers participating in an RMP must collectively submit the following reports to the Board's Executive Officer: