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WASTE DISCHARGE REQUIREMENTS ORDER R5-2012-0105 4 <br /> DIAMOND PET FOOD PROCESSORS OF RIPON, LLC AND <br /> RIPON COGENERATION, LLC <br /> DIAMOND PET FOOD RIPON FACILITY <br /> SAN JOAQUIN COUNTY <br /> Annual Usage <br /> Trade Name Hazardous Constituents (gallons) <br /> Peroxyacetic acid <br /> Perasah A Hydrogen peroxide 20 <br /> Acetic acid <br /> n-Alkyl dimethyl benzyl ammonium chloride <br /> Sanitime n-Alkyl dimethyl ethyl benzyl ammonium chloride 220 <br /> Ethanol <br /> Cyclohexylamine <br /> Tri-Act 1820 Diethylethanolamine 120 <br /> Morpholine <br /> 17. Diamond uses RO systems to improve the quality of the groundwater supply that is used <br /> for its processes. Diamond has two RO systems that are operated independently. <br /> Each RO system operates at 80 gallons per minute input, and generates 40 gallons of <br /> reject brine per minute. Diamond's wastewater consists of the RO reject brine, and <br /> process and sanitation wastewater. In addition, Diamond will continue to accept Ripon <br /> Cogeneration, LLC's cooling tower blowdown and RO reject brine. <br /> 18. Diamond's process and sanitation wastewater is collected into a solids separation <br /> collection system and then the supernatant is pumped into the clarifier. The solids are <br /> hauled offsite to a permitted landfill. <br /> 19. The wastewater from Ripon Cogeneration, LLC and Diamond is mixed in the circular <br /> clarifier, where wastewater is diluted with low TDS groundwater from the onsite production <br /> wells and distilled water purchased from Ripon Cogeneration, LLC. The wastewater flows <br /> into two ASBs in series from the clarifier and then is applied to the LAAs via flood <br /> percolation. ASB-1 and ABS-2 are equipped with mechanical aerators. The wastewater <br /> treatment process schematic is shown on Attachment C, which is attached hereto and <br /> made part of this Order by reference. <br /> 20. The RWD predicts influent flow rates as follows: <br /> Maximum Flow Average Flow <br /> Source _ Rate(gpd) Rate(gpd) <br /> Projected Diamond RO Reject 75,000 56,250 <br /> Wastewater projected Diamond Process/Sanitation 12,000 9,000 <br /> _ Ripon Cogeneration, LLC Blowdown and RO Reject 304,416 217,440 <br /> Dilution Groundwater for Dilution 512,064 365,760 <br /> Water Distilled Water Purchased from Ripon Cogeneration, LLC <br /> for Dilution 52,650 52,650 <br /> Total Wastewater from Diamond and Ripon Cogeneration, <br /> Influent LLC, Groundwater and Distilled Water for Dilution 956,130 701,100 <br />