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WASTE DISCHARGE REQUI&ENTS NO. -3- <br /> OWENS-BROCKWAY <br /> OWENS-ILLINOIS GLASS FURNACE FACILITY <br /> SAN JOAQUINCOUNTY <br /> on the surface of process wastewater Pond No. 1. These WDRs include a provision to <br /> improve the control of oil in wastewater. _ <br /> 12. Based on the Discharger's characterization of effluent performed 5 April 1995, process <br /> wastewater is characterized as follows: <br /> Constituent Units AB Sump C Sump RO Reject Water RO Filter Backwash <br /> Alkalinity (as CaCO3) mg/l 350 270 190 150 <br /> Hydroxide mg/1 ND ND ND ND <br /> Carbonate mg/1 ND ND ND ND <br /> Bicarbonate mg/1 420 330 230 190 <br /> COD mg/1 2,700 3,000 96 27 <br /> Conductivity umhos/cm 2,300 1,700 5,200 1,600 <br /> pH pH units 7.6 7.5 7.0 8.0 <br /> TDS mg/1 1,900 1,500 3,800 1,000 <br /> Arsenic mg/1 ND ND ND ND <br /> Barium mg/1 0.03 0.02 0.06 ND <br /> Calcium mg/1 87 58 320 85 <br /> Chromium mg/l 0.026 0.02 0.05 0.04 <br /> Copper mg/1 ND 0.07 ND ND <br /> Lead mg/1 0.13 0.07 ND ND <br /> Magnesium mg/1 38 27 110 40 <br /> Mercury mg/1 0.0002 ND ND ND <br /> Potassium mg/1 8.7 14 15 4 <br /> Selenium mg/1 ND ND ND ND <br /> Silver mg/1 ND ND ND ND <br /> Sodium mg/1 350 240 470 180 <br /> Zinc mg/1 0.55 0.41 0.09 0.05 <br /> Note: <br /> Data from Owens-Brockway Glass Container report, "Wasti,Water Streams Analysis,"5 April 1995. <br /> 13. The depth to groundwater and flow direction has been measured in on-site groundwater <br /> monitoring wells. The monitoring wells are screened in the first encountered water bearing <br /> zone. Groundwater exists approximately 50 feet below ground surface (bgs); groundwater <br /> flows to the north-northeast, consistent with site topography. Below the first water bearing <br /> zone exists a silty clay aquitard from 70-170 ft. bgs. <br /> 14. Groundwater sample events were performed on 30 June 1995 and 22 August 1996;the <br /> results of the chemical analysis of the samples indicates groundwater downgradient of the <br /> process wastewater ponds has been impacted by process wastewater infiltration to <br /> groundwater. Groundwater located downgradient of the process wastewater ponds contains <br /> elevated total dissolved solids, electrical conductivity, and other compounds consistent with <br /> compounds contained in the process wastewater. <br />