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WASTE DISCHARGE REQUIREAS ORDER NO. 5-01-172 <br /> EAST-SIDE WINERY DBA OAK WE VINEYARDS 3 <br /> SAN JOAQUIN COUNTY <br /> 15. Pomace and other grape wastes (skins, seeds,pulp, and stems) from the primary fermentation <br /> process in the winery are sold commercially, are sent to vineyards (owned by cooperative <br /> members), or are composted in the area of the wastewater ponds. The secondary fermentation <br /> process produces lees consisting of yeasts and solids coagulated with bentonite and settled. After <br /> filtration, these wastes are hauled to the wastewater ponds area. The filtrate is returned to the body <br /> of the blend. <br /> 16. Stems are compacted and transported to the land next to the ponds. On some occasions the <br /> Discharger has contracted to have the filter cake picked up by a commercial firm to extract <br /> potassium bitartrate (cream of tartar). When commercial disposal is not available, the filter cake is <br /> disposed of with the stems in the pond area. This Older requires changes in solid waste disposal <br /> practices. <br /> 17. The winery is not expected to expand its operations in the future unless the economics of operating <br /> the distillery change. In that case, additional stillage will be generated. Discharges are anticipated <br /> to continue at approximately the current rate. Presently, flows are not metered; these waste <br /> discharge requirements include a provision for installation of meters to determine the wastewater <br /> flow. <br /> 18. As of June 2000, East-Side Winery has performed monthly monitoring of the effluent and the deep <br /> pond to characterize the wastewater effluent. Based on eight sample events, the average <br /> wastewater and pond water quality is as follows: <br /> An- alyte Wastewater Effluent Deep Pond Water <br /> BOD 3,778 2,487 <br /> Suspended Solids 427 114 <br /> pH 4.3 4.7 <br /> Conductivity 13,875 730 <br /> Sulfate 2,341 110 <br /> Nitrate as Nitrogen 70 10 <br /> Total Dissolved Solids 3,897 1,003 <br /> Volatile Dissolved Solids 3,035 760 <br /> Dissolved Oxygen 2.6 0.5 <br /> 19. Compound concentrations in winery wastewater are the highest during the crush season, typically <br /> in the following ranges: <br /> Compound Units _Concentration Rangy <br /> pH pH units 2.5 -9.5 <br /> Dissolved Oxygen mg/l 0.5 - 8.5 <br /> Biochemical Oxygen Demand(BOD5)2 mg/l 500- 12,000 <br /> Chemical Oxygen Demand (COD) mg/1 800- 15,000 <br /> Grease mg/l 5-30 <br /> Settleable Solids mg/l 25 - 100 <br /> Nonfilterable Residue mg/l 40- 800 <br /> Volatile Suspended Solids mg/1 150-700 <br />