FIELD DOCUMENTS_2000-2003 - Laserfiche WebLink

Home Browse Search

WASTE DISCHARGE REQUDVIENTFS ORDER NO. R5-2003-XXXX • 3 SPX CORPORATION MARLEY COOLING TOWER COMPANY SAN JOAQUIN COUNTY 10. The groundwater treatment facility is designed to treat a maximum flow up to 0.94 mgd. Groundwater is extracted from approximately 17 extraction wells on and off-site. The groundwater extraction system can operate in a cyclical fashion with each of the two cycles lasting 56 hours or on a continuous basis with all extraction wells pumping at rates varying from 10-90 gallons per minute depending on effective capture of the groundwater contamination plume. When cycling, primary groundwater extraction is alternated between the north zone and the area south of the site. Water extracted from the north zone has higher contaminant concentrations. During south zone pumping, the capacity of the treatment plant is not fully utilized unless supplemental waste sources are added. Flushing water may be added to supplement the groundwater contaminant concentrations. Additionally, when sufficient storm water is accumulated on the North Yard to justify treatment,the operator will manually initiate storm water treatment through the Andco system. Groundwater from selected wells will simultaneously be delivered to the ion exchange treatment system. 11. On 16/17 September 2002, a system malfunction resulted in discharge of a high pH water and fish-kill in the Stockton Diverting Canal. This Order includes a provision that the Discharger submit and implement a release prevention plan and a contingency plan to minimize the potential for future accidental discharees. 12. The Report of Waste Discharge (RWD) and previous information submitted by the Discharger describes the combined storm water and groundwater characteristics and the treatment system performance characteristics as follows: Monthly Average Flow: 0."2 million gallons per day(mgd) Daily Maximum Flow, Treatment Plant Capacity: 0.94 mgd Average Temperature: 65' F (groundwater) pH: 7.0—7.5 (groundwater) Constituent Storm Water(m /g_V,ppm Groundwater(ms/L,ppm) Total Chromium 1.0-3.0 0.16- 14 Chromium VI 0.5 -2.5 0.16- 14 Copper 0.50-2.5 <0.01 Arsenic 0.05 -0.20 <0.1 Total Dissolved Solids (TDS) 500-650 milligrams per Liter. parts per million 13. The U.S. Environmental Protection Agency(USEPA) and the Regional Board have classified this discharge as a minor discharge. V 14. The Regional Board adopted a Water Quality Control Plan, Fourth Edition,for the Sacramento and San Joaquin River Basins (hereafter Basin Plan). The Basin Plan designates beneficial uses, establishes water quality objectives, and contains implementation programs and policies to