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E ATTACHMENT A ORDER NO. R5-2006-0054 INDIVIDUAL DISCHARGER CONDITIONAL WAIVER OF WASTE DISCHARGE REQUIREMENTS FOR DISCHARGES FROM IRRIGATED LANDS -2- State Water Board Water Quality Control Plan for Temperature in Coastal and Interstate Waters and Enclosed Bays and Estuaries in California, June 1972 State Water Board Resolution No. 74-43, Water Quality Control Policy for the Enclosed Bays and Estuaries of California, May 1974 State Water Board Resolution No. 88-63, Sources of Drinking Water Policy, May 1988 State Water Board Water Quality Control Plan for the San Francisco Bay/Sacramento San Joaquin Delta Estuary, May 1995 Consolidated Toxic Hot Spots Cleanup Plan, June 1999 Policy for Implementation and Enforcement of the Nonpoint Source Pollution Control Program, May 2004 National Toxics Rule, 40 CFR 131.36 California Toxics Rule, 40 CFR 131.38 DEFINITIONS The following definitions apply to the Conditional Waiver and Monitoring and Reporting Program as related to discharges of waste from irrigated lands. All other terms shall have the same definitions as prescribed by the Porter -Cologne Water Quality Control Act (California Water Code Division 7), unless specified otherwise. 1. Coalition Group - Any group of Dischargers, participants, and/or organizations that form to comply with the Conditional Waiver. Coalition Groups can be organized on a geographic basis or can be groups with other factors in common such as commodity groups. 2. Discharger - The owner and/or operator of irrigated lands that discharge or have the potential to discharge waste that could directly or indirectly reach surface waters of the State and could affect the quality of the waters of the State.. 3. Discharges of waste from irrigated lands — Surface discharges, such as irrigation return flows, tailwater, drainage water, subsurface drainage generated by irrigating crop land or by installing and operating drainage systems to lower the water table below irrigated lands (tile drains), stormwater runoff flowing from irrigated lands, stormwater runoff conveyed in channels or canals resulting from the discharge from irrigated lands, and/or operational spills containing waste. 4. Exceedance - For the purposes of the Conditional Waiver, an exceedance is a reading using a field instrument or a detection by a California State -certified analytical laboratory where the detected result is above an water quality standard for the parameter or constituent. For toxicity tests, an exceedance is a result that is statistically different from the control sample test result.