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WASTE DISCHARGE REQLWMEMTS ORDER NO. 5-00-142 • -3- <br /> CITY OF ESCALON <br /> ESCALON WASTEWATER TREATMENT FACILITY <br /> SAN JOAQUIN COUNTY <br /> 13. Industrial dischargers consist of Escalon Premier Brand (tomato canner) and Eckert Cold <br /> Storage (frozen pepper processor). The industrial dischargers' processing season is from <br /> approximately May through December. The industrial dischargers presently screen their <br /> wastewater to remove solids prior to discharge to the WWTP. <br /> 14. Industrial wastewater is characterized by high concentrations of biochemical oxygen <br /> demand. The Discharger has not been previously required to analyze for total dissolved <br /> solids (TDS) concentrations. Escalon Premier Brands added tomato peeling equipment in <br /> 1999 which resulted in additional flow and increased biochemical oxygen demand. <br /> 15. Based on the Discharger's self-monitoring data for 1999, the flow rate and biochemical <br /> oxygen demand of influent at the WWTP headworks is presented below: <br /> Domestic Wastewater System Industrial Wastewater System <br /> Month Flow m BOD' (mom) Flow ma BOD' (ma/1) <br /> January 1999 21.2 282 0.75 NA <br /> February 1999 19.2 106 0.21 NA <br /> March 1999 20.1 215 0.25 NA <br /> April 1999 19.5 114 0.15 NA <br /> May 1999 19.4 102 0.60 NA <br /> June 1999 20.4 147 7.54 712 <br /> July 1999 20.4 181 42.6 505 <br /> August 1999 21.3 105 79.7 610 <br /> September 1999 18.6 110 93.3 1,380 <br /> October 1999 21.9 131 98.7 750 <br /> November 1999 21.2 71 32.4 316 <br /> December 1999 21.3 75 5.2 NA <br /> 5-day Biochemical Oxygen Demand. <br /> NA denotes Not Analyzed. <br /> Data from City of Escalon, "1999 Annual Wastewater Treatment Report,"February 2000. <br /> 16. Both industrial dischargers are required to sample their wastewater individually. Flow rates <br /> and biochemical oxygen demand data for the 1999 processing season are presented below: <br /> Constituent Escalon Premier Brand Eckert Cold Storage <br /> Units Averaie/peak Average/Peak <br /> BODS mg/1 1,151/1,900 1,214/3,000 <br /> Flow Rates <br /> July 1999 mgd 1.8/2.0 0.5/1.0 <br /> August 1999 mgd 2.2/2.3 0.4/0.5 <br /> September 1999 mgd 2.5/3.0 0.7/0.9 <br /> October 1999 mgd 2.3/2.7 0.7/0.9 <br /> November 1999 mgd 2.1/2.3 0.7/0.8 <br /> Data from Nolte Report, "Wastewater Treatment Facilities Improvements," March 2000. <br />