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WASTE DISCHARGE REQUIREMENTS ORDER NO. -4-
<br /> PAT MITCHELL AND CALIFORNIA NATURAL PRODUCTS
<br /> WASTEWATER TREATMENT AND DISPOSAL FACILITY
<br /> SAN JOAQUIN COUNTY
<br /> wastewater treatment plant that is currently in progress and is scheduled to become available in
<br /> 20032. Additional interim unused capacity allocated to the City of Lathrop may be temporarily
<br /> available at the City of Manteca plant-temperaeily.
<br /> 23. Based on projected increases in CND's wastewater flow rates, additional capacity at treatment
<br /> plants or additional land application areas will be necessary. CNP has investigated discharging to
<br /> alternative treatment1p antssystems such as in.*Fim eapae4y available in the City of Nla�qtee
<br /> �3rejeethe Sharpe Depot wastewater treatment plant; orand the planned treatment
<br /> systems proposed in the City of Lathrop. CNP has also considered using.,interim capacity
<br /> available in the City of Manteca's expansion project. Rased enpr-ejeeted inereases in.......,.,waw
<br /> flew
<br /> rates, additieiial. eapaoity at tfea�ment plants or additional land application afeas will bee
<br /> fteeessary—Wastewater generation at CNP is expected to increase in the future as presented in the
<br /> table below. The data presented is the total anticipated flow rate and will be split between the land
<br /> application area and municipal treatment system discharges.
<br /> Year Projected Flow (gpo) Year Projected Flow (gpo)
<br /> 2000 250,000 2006 578,000
<br /> 2001 288,000 2007 665,000
<br /> 2002 331,000 2008 765,000
<br /> 2003 380,000 2009 879,000
<br /> 2004 437,000 2010 1,011,000
<br /> 2005 503,000
<br /> 24. The treatment facility contains two bypass lines. The first bypass pipe allows discharge of
<br /> wastewater to land after the screening process. A second bypass pipe allows wastewater from the
<br /> DAF to be discharged to land without further treatment. Following&iffee the installation of the
<br /> pretreatment equipment in early 2000, a significant amount of wastewater bas-bypassed the
<br /> treatment equipment due to various startup problems. Bypassing was stopped on 14 August 2000
<br /> and the bypass lines were decommissioned. Bypassing the treatment system resulteds in high
<br /> strength wastewater being discharged to land and causcds objectionable odors. The flows that
<br /> werehave be diverted are as follows:
<br /> Date Units Total Flow Flow to Ci tv Land App. B
<br /> Discharge wPercent
<br /> ass Flow Diverted
<br /> 1/00 Gal/Molexs 5,395,900 1,579,600 3,816,300 2,671,000 70.0
<br /> 2/00 Gal/Molens 5,879,500 . 2,774,100 3,105,400 2,061,622 66.4
<br /> 3/00 Gal/Mo4ens 5,880,100 3,088,400 2,791,700 1,858,900 66.6
<br /> 4/00 Gal/Molens 4,645,800 2,410,500 2,235,300 1,886,100 84.4
<br /> 5/00 Gal/MoIens 6,063,000 2,420,300 3,642,700 1,597,300 43.8
<br /> 6/00 Gal/.Molees 5,418,400 1,259,000 4,159,400 683,100 16.4
<br /> 7/00 GalMolens 6,512,200 1,196,900 5,315,300 1,233,400 23.2
<br /> 8/00 Gal/Molens 7,945,300 2,884,400 5,060,900 588,400 11.6
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