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WASTE DISCHARGE REQUIRENNTS ORDER NO. -3- GOLDSTONE LAND COMPANY,LLC AND KURT KAUTZ BEAR CREEK WINERY SAN JOAQUIN COUNTY Wastewater flow rates are highest during and after the crush season (August through December) when average daily flows are approximately 130,000 gpd. 14. Process wastewater is collected in floor drains and flows by gravity to a pump station where the wastewater is screened before discharge to the LTU. 15. Based on one full year of monitoring data presented in the RWD, the winery wastewater is characterized as follows. Typical winery wastewater quality (from RWD, Summit Engineering, February 2002) is also presented for comparison. Crush Season Non-Crush Typical Crush Typical Non-Crush Constituent Unit Average Average Season Range Season Range BOD mg/L 3,183 1,367 500- 12,000 300-3,500 Suspended Solids mg/L 470 1,241 NA NA pH Std. 6 6 2.5 -9.5 3.5 - 11.0 Nitrate as N mg/L 6 9 0- 1.5 0- 1.5 TKN mg/L 27 31 1 -40 1 —40 Sulfate mg/L 160 127 10-75 20- 75 TDS mg/L 1,440 1,412 80-2,900 80-2,900 VDS mg/L 640 693 NA NA BOD denotes Biochemical Oxygen Demand. Nitrate as N denotes Nitrate as Nitrogen. TKN denotes total Kjeldahl Nitrogen. TDS denotes Total Dissolved Solids. VDS denotes Volatile Dissolved Solids. 16. The data presented above indicates low and/or high pH wastewater will be generated during seasonal activities at the facility. Because application of low or high pH wastewater to land can impact the health of plants which are relied upon to take up nitrogen, can shock micro-organisms which stabilize wastewater constituents, and can dissolve and mobilize constituents to migrate toward groundwater, the Discharger is required to neutralize pH prior to discharge to LTUs. 17. Solid wastes (lees, pomace, and stems) are applied as a soil amendment to the LTUs. 18. Historically all process wastewater, stillage (distillery waste), and stormwater that fell on the winery was discharged without treatment to a 12-acre fallow area operated as a rapid infiltration basin. The location of the 12-acre area is shown on Attachment B 1 (identified as"current disposal area"), which is attached hereto and made part of this Order by reference. 19. Wastewater is applied to the LTU by flood irrigation. Individual check berms are constructed or relocated as necessary to minimize standing water. Application of wastewater to fallow land may lead to groundwater degradation and therefore may not be consistent with the Groundwater Limitations of this Order. 20. The Discharger recently began using process wastewater to irrigate Vineyards No. 1,2, and 3 which total approximately 57 acres. The wastewater is applied by furrow irrigation; in summer months,wastewater will be applied below the agronomic water demand rates, therefore supplemental irrigation water will be applied by drip irrigation. V,lw Jo uin_NooIRSWPOhrirnTPmj=Filns =Creek\W KR