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FALL CREEK <br /> REPORT OF WASTE DISCHARGE ENGINEERING.INC. <br /> �- of medium-sized wineries in California is included in Table 3.4. Given the high levels of BOD, <br /> this is the waste constituent that generally governs biological treatment plant design. <br /> Table 3.4. Typical Winery Wastewater Characteristics <br /> (Storm, 1997 and Swanson Oswald Associates, 1990) <br /> Waste Parameter Units Concentration <br /> BOD mg/L 3,000—7,000 <br /> Suspended Solids mg/L 200-800 <br /> Settleable Solids ml/L 5 -20 <br /> pH units 3 -5 <br /> �w Dissolved Oxygen mg/L 0-9 <br /> Total Nitrogen mg/L 5 -50 <br /> %W Total Phosphorus mg/L 2-8 <br /> •. Grease mg/L 5 -40 <br /> Sulfate mg/L 20-75 <br /> Total Dissolved Solids mg/L 500-1,000 <br /> Inorganic (Fixed) <br /> Dissolved Solids mg/L 300-700 <br /> Volatile Dissolved Solids mg/L 200-700 <br /> During the peak processing period, the wastewater is expected to contain a high concentration of <br /> soluble organic matter, consisting of dissolved sugars and organic acids. This material will <br /> %W contribute to a high biochemical oxygen demand(BOD), however, this waste is readily <br /> %W, biodegradable in a biological treatment system. <br /> %W In general, Total Dissolved Solids (TDS) can be a measurement of inorganic ions in solution. <br /> %W However, in winery process wastewater, a significant fraction of the TDS measured in the <br /> %,. wastewater will consist of dissolved sugars and organic acids, which are also readily <br /> biodegradable in a biological treatment system. Therefore, it is important to consider the <br /> fractions of TDS that are biodegradable (or volatile dissolved solids (VDS)) and fixed(or <br /> inorganic dissolved solids (IDS)) before one can assess the potential long-term impacts from the <br /> `. final disposal of treated wastewater. Recent analysis of other winery facilities in the Central <br /> `,, Valley region indicate that VDS fractions can represent between 40 to 60 percent of the TDS in <br /> v <br /> winery process wastewater. <br /> A variety of chemicals are also used in winemaking for sanitizing tanks and other process <br /> equipment, as well as filtering, clarifying, and preserving wine chemicals (e.g. Tri Sodium <br /> Phosphate, detergents, etc.). Because these materials are typically used in small quantities, most <br /> of these have little affect on the quality of winery wastewater. <br /> `. 3.2.2 Stormwater Quality <br /> As previously described, the Winery uses a combined sewer collection and disposal system for <br /> lkw both process wastewater and stormwater runoff. Roofs, driveways, tanks, and other impervious <br /> %W surfaces cover a significant portion of the facility, and most rainfall enters the combined drainage <br /> `, system and is released to the disposal area. <br /> JESSIE'S GROVE WINERY 10 FEBRUARY 2004 <br />