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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> ORDER NO. R5-2004-0029 <br /> REQUIRING THE CITY OF MANTECA <br /> WASTEWATER QUALITY CONTROL FACILITY <br /> SAN JOAQUIN COUNTY <br /> TO CEASE AND DESIST <br /> FROM DISCHARGING CONTRARY TO REQUIREMENTS <br /> The California Regional Water Quality Control Board, Central Valley Region, (hereafter Regional <br /> Board) finds that: <br /> 1. On 19 March 2004, the Regional Board adopted Waste Discharge Requirements Order No. R5- <br /> 2004-0028 prescribing waste discharge requirements for the City of Manteca, City of Lathrop, <br /> and Dutra Farms at the Manteca Wastewater Quality Control Facility(WQCF) in San Joaquin <br /> County. For the purposes of this Order, the City of Manteca is hereafter referred to as <br /> "Discharger". <br /> 2. WDRs, Order No. R5-2004-0028, contains Effluent Limitation Nos. B.1, B.2 and B.3. For the <br /> parameters listed below, the concentration limitations remain the same for B.1,B.2 and B.3, but <br /> the load limitations increase with increases in approved discharge rates. Effluent Limitation B.1 <br /> reads, in part, as follows: <br /> "B. Effluent Limitations (Discharge to the San Joaquin River): <br /> 1. Effluent shall not exceed the following.limits: <br /> Monthly Daily <br /> Constituents Units Average Maximum <br /> Aluminum ug/l 71 140 <br /> lb/day(l) 4.1 8.1 <br /> Ammonia-N(June-Sept) mg/l 2.1 4.4 <br /> lb/days" 120 260 <br /> Ammonia-N(Oct-May) mg/l 2.8 5.6 <br /> lb/day(l) 160 320 <br /> Arsenic ug/l 10 <br /> lb/days') 0.58 <br /> Copper ug/1 7.9 10.4 <br /> lb/days') 0.46 0.60 <br /> Cyanide ug/1 3.7 10 <br /> lb/day'') 0.21 0.58 <br /> Electrical Conductivity umhos/cm 1000 <br /> Iron ug/1 300 <br /> lb/day�') 17 <br />