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WASTE DISCHARGE REQUIREME•S ORDER NO.R5-2003-0141 • -3- <br /> CALIFORNIA NATURAL PRODUCTS <br /> WASTEWATER TREATMENT FACILITY <br /> SAN JOAQUIN COUNTY <br /> Year Projected Flow (end) Year Proiected Flow(god) <br /> 2000' 250,000 2006 420,000 <br /> 20012 233,874 2007 440,000 <br /> 20022 254,997 2008 460,000 <br /> 2003 350,000 2009 480,000 <br /> 2004 375,000 2010 500,000 <br /> 2005 400,000 <br /> Metering data unreliable. <br /> 2 Denotes actual average flow rate. <br /> 15. The RWD supports an annual monthly average land application rate of 370,000 gallons per day <br /> (gpd) and maximum monthly average land application rate of 429,000 gpd. Based on the current <br /> discharge rate of 60,000 gpd of wastewater to the municipal system, the expected annual average <br /> and maximum monthly average total wastewater generation rates will be 430,000 and 489,000 <br /> gpd,respectively. Because market demand fluctuates during the year, the Discharger has <br /> requested flexible flow rate limits to allow the business to respond to the market conditions. <br /> WASTEWATER SYSTEM <br /> 16. Process and cleanup wastewater is piped to a central collection sump where it is pumped to the <br /> treatment system. <br /> 17. Wastewater generated in the processing plant is characterized by a high organic matter and solids <br /> content. Effluent concentrations have declined substantially since the optimization of wastewater <br /> pretreatment systems. The average concentrations of analytes in the process wastewater and <br /> treated wastewater are as follows: _, <br /> Constituent Units Untreated Wastewater 1 Treated Wastewater 2 <br /> Biochemical Oxygen Demand mg/L 2,205 151 <br /> Electrical Conductivity µmhos/cm 1,550 1,687 <br /> Total Dissolved Solids mg/L 2,190 1,0983 <br /> Fixed Dissolved Solids mg/L 1,279 7353 <br /> Total Nitrogen mg/L 49.3 15.9 <br /> pH Standard 8.6 7.4 <br /> 1 Untreated wastewater data from Wastewater Capacity Plan, 17 January 2000,prepared by B.Dickson. <br /> 2 Treated wastewater data from monthly average data since January 2001,RWD Table 10,January 2003 except where <br /> noted. <br /> ' Data from table titled"Wastewater Flow and Effluent Analysis"in Appendix B. Data from March 2001 to October <br /> 2002. <br /> 18. CNP's treatment of process wastewater consists of screening using a rotary screen and two <br /> 100-micron stainless steel parabolic screens;holding/recycle tank;pH control; Dissolved Air <br /> Flotation(DAF) clarifier; a 45-foot diameter, 26-foot high trickling filter; and aerated skimmer. <br /> Prior to discharge, the wastewater is stored in a 13,000 gallon tank. <br />