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WASTE DISCHARGE REQUIRENTS ORDER NO. • -6- RODNEY AND GAYLA SCHATZ MOKELUMNE RIM VINEYARDS SAN JOAQUIN COUNTY IDS in wastewater varies with the source, but often 50-percent of the TDS in winery wastewater is in the volatile form. These volatile dissolved solids are biologically treated in a pond or a well managed land application system and do not reach groundwater. Therefore, of the 352 pounds of TDS in the wastewater applied per acre in the land application area, a portion is expected to be in the inorganic fraction. Because plants can take up to 2,000 pounds of salt/acre-year, the Discharger maintains that the proposed loading rate should not degrade the underlying groundwater. However, success is highly dependent on wastewater management and the blending of irrigation water. Accordingly, groundwater monitoring is appropriate to detect whether management of the land application area ensures that groundwater degradation does not occur. 31. Section 13267(b) of California Water Code provides that: "In conducting an investigation specified in subdivision (a), the regional board may require that any person who has discharged, discharges, or is suspected of having discharged or discharging, or who proposes to discharge waste within its region, or any citizen or domiciliary, or political agency or entity of this state who has discharged, discharges, or is suspected of having discharged or discharging, or who proposes to discharge, waste outside of its region that could affect the quality of waters within its region shall furnish, under penalty of perjury, technical or monitoring program reports which the regional board requires. The burden, including costs, of these reports shall bear a reasonable relationship to the need for the report and the benefits to be obtained from the reports. In requiring those reports, the regional board shall provide the person with a written explanation with regard to the need for the reports, and shall identify the evidence that supports requiring that person to provide the reports." The technical reports required by this Order and the attached "Monitoring and Reporting Program No. _" are necessary to assure compliance with these Waste Discharge Requirements (WDRs). 32. California Department of Water Resources standards for the construction and destruction of groundwater wells, is described in California Well Standards Bulletin 74-90 (June 1991) and Water Well Standards: State of California Bulletin 94-81 (December 1981). These standards, and any more stringent standards adopted by the state or county pursuant to CWC section 13801, apply to all monitoring wells. 33. State regulations that prescribe procedures for detecting and characterizing the impact of waste constituents from waste management units on groundwater are found in Title 27. While the wastewater treatment facility is exempt from Title 27, the data analysis methods of Title 27 are appropriate for determining whether the discharge complies with the terms for protection of groundwater specified in this Order. 34. Federal regulations for storm water discharges were promulgated by the U.S. Environmental Protection Agency on 16 November 1990 (40 CFR Parts 122, 123, and 124). The State Board adopted Order No. 97-03-DWQ (General Permit No. CAS000001) specifying waste discharge requirements for discharges of storm water associated with industrial activities, and requiring submittal of a Notice of Intent by all affected industrial dischargers. The Discharger has not yet obtained coverage under General Permit No. CAS000001, and is required to do so. 35. On 12 July 2000, in accordance with the California Environmental Quality Act (Title 14, CCR, section 15261 et seq.), the San Joaquin County Planning Commission approved a Negative Declaration for the R&G Shatz Farm winery. No mitigation measures related to water quality were V.�Swi Joaquin Non 15�Swff Obnair sui Joaquin:ldokclumnc Rini Vlncyuds\WDRrI dm