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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION MONITORING AND REPORTING PROGRAM NO. FOR GOLDSTONE LAND COMPANY, LLC AND KURT KAUTZ BEAR CREEK WINERY SAN JOAQUIN COUNTY This monitoring and reporting program (MRP)presents requirements for monitoring of the winery wastewater and groundwater. This MRP is issued pursuant to Water Code Section 13267. The Discharger shall not implement any changes to this MRP unless and until a revised MRP is issued by the Executive Officer. Specific sampling station locations shall be approved by Regional Board staff prior to implementation of sampling activities. All wastewater samples shall be representative of the volume and nature of the discharge. The time, date, and location of each grab sample shall be recorded on the sample chain of custody form. Winery wastewater flow monitoring shall be conducted continuously using a flow meter and shall be reported in cumulative gallons per day. Field test instrumLnts (such as pH and dissolved oxygen) may be used provided that: 1. The operator is trained in the proper use of the instrument; 2. The instruments are calibrated prior to each use; 3. Instruments are serviced and/or calibrated by the manufacturer at the recommended frequency; and 4. Field calibration reports are submitted as described in the"Reporting" section of this MRP. WINERY WASTEWATER MONITORING Winery wastewater samples shall be collected prior to discharge to the land treatment units. Monitoring shall include, at a minimum, the following: Type of Sampling Reporting Constituents Units Sample Frequency Frequency Flowl gallons Metered Continuous) Monthly pH std. Grab Twice-Weekly Monthly BOD52 mg/L Grab Monthly Monthly Total Dissolved Solids mg/L Grab Monthly Monthly Total Sulfate mg/L Grab Monthly Monthly Nitrate as Nitrogen mg/L Grab Monthly Monthly Total Kjeldahl Nitrogen mg/L Grab Monthly Monthly Continuous monitoring requires daily meter reading or automated data collection. Flow shall be monitored by 13 May 2003. 2 Five-day,20°Celsius Biochemical Oxygen Demand.