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WASTE DISCHARGE REQUIREMENTS ORDER NO. � G- GOLDSTONE LAND COMPANY, LLC AND KURT KAUTZ BEAR CREEK WINERY SAN JOAQUIN COUNTY TDS NO3 as N EC Na Cl Well Name Date pH (me/L) m L (ambos/cm) (ma/L) m g/L MW-2 June 2001 6.90 680 22 1,100 62 36 MW-2 Sept. 2001 7.24 760 27 910 NS NS MW-2 March 2002 6.73 631 19.1 990 49 30 MW-2 April 2002 6.54 542 21.6 900 NS NS MW-2 July 2002 6.69 744 20.5 1,165 NS NS Average 6.82 671 22 1,013 55.5 33 MW-3 June 2001 6.88 1,000 31 1,600 81 54 MW-3 Sept. 2001 6.84 1,000 36 1,300 NS NS MW-3 March 2002 6.85 782 17.1 1,400 53 45 MW-3 April 2002 6.36 992 27.1 1,540 NS NS MW-3 July 2002 6.27 1,085 26.9 1,720 NS NS Average 6.64 972 27.6 1,512 67 49.5 TDS denotes Total Dissolved Solids. NO3 as N denotes Nitrate as Nitrogen. EC denotes Electrical Conductivitiy. Na denotes Sodium. Cl denotes Chloride. 32. As indicated in the table above, the average TDS and nitrate as nitrogen concentrations in Well MW-3 (the only well that is at least partially downgradient of the primary wastewater application area) are higher than that of the groundwater below the area that is cross gradient of the application area or apparently upgradient of the application area. This data indicates that groundwater below the LTU may be impacted by the discharge of wastewater from the facility. It is noted that none of the wells can be considered upgradient of wastewater application areas since wastewater has been applied to Vineyards No. 1, 2, and 3 and the close proximity of Well MW-2 to the LTU may have resulted in degradation of groundwater quality. Therefore, the Discharger must install additional groundwater wells to allow evaluation of background and downgradient groundwater quality for all the LTUs. SITE SPECIFIC CONDITIONS 33. Domestic wastes generated at the winery are discharged to a series of two 600-gallon septic tanks that discharge to a leachfield. There is no tasting room, so the septic system primarily serves winery employees. The peak daily flow to the active septic system is estimated to be 600 gallons per day. Oversight of the domestic wastewater system is performed by the San Joaquin County Environmental Health Department, which will continue to oversee the domestic wastewater system. 34. Surrounding land uses are agricultural and residential. The topography of the surrounding area is relatively flat. 35. Shallow soils are described in the monitoring well boring logs as sand, sandy silt, and clay to an investigated depth of approximately 94 feet bgs. Near surface soils are described in the Soil Survey San Joaquin County, California report prepared by the Soil Conservation Service. Soil properties in the LTUs vary widely depending on the soil type. The Soil Survey describes surface soils as Tokay fine sandy loam with moderately rapid percolation (2.0-6.0 in/hr), high water VFihslam C kWDKa