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INFORMATION SHEET ORDER NO. 5-00-056 OWENS-BROCKWAY GLASS FURNACE FACILITY, OWENS-ILLINOIS SAN JOAQUIN COUNTY Owens-Brockway, a subsidiary of Owens-Illinois, operates a glass furnace facility at 14700 W. Shulte Road, in Tracy, San Joaquin County. The facility stockpiles raw material, manufactures glass products, and warehouses products prior to shipment. In January 2000, Owens-Brockway submitted a Report of Waste Discharge. The facility generates approximately 18,000 gallons per day from cullet water, overflow, furnace drain water, cooling tower overflow, reverse osmosis reject water and cleaning water(collectively process water). The process wastewater is discharged to three evaporation and percolation ponds. Approximately 14,000 gallons per day of domestic wastewater is discharged to a primary septic tank and leachfield. A second small septic tank and leachfield serves a leased portion of the facility. All stormwater is discharged to several stormwater ponds where it percolates to the subsurface. When a furnace requires rebuilding, the molten glass is drained and approximately 750,000 gallons of well water is pumped through the system to cool the glass and carry it out of the building. This water currently flows to the storm water ponds. This Order requires the Discharger to sample this water; if the Discharger can show that it does not contain contaminants at concentrations that will adversely impact groundwater, then upon approval of the Executive Officer, it may continue to go to the stomiNvater pond. If the water does contain contaminants at elevated concentrations, then this water must go to the industrial ponds. Depth to the first water bearing zone is approximately 75 feet. A 100-foot thick aquitard exists below the first water bearing zone. The plant water supply is provided by a water well screened in deep aquifer zones below the aquitard. Groundwater in the deep aquifer zone contains elevated concentrations of total dissolved solids. Four groundwater monitoring wells exist at the facility; one of the wells has been dry from the time of installation. Three sampling events have been performed with v the groundwater monitoring wells. Elevated concentrations of TDS, specific conductance, and other compounds consistent with the process wastewater disposal were reported in the groundwater monitoring well located adjacent to the wastewater evaporation and percolation ponds. Under these waste discharge requirements, effluent, pond, and groundwater monitoring will be required. The WDRs require an evaluation of the monitoring well network, preparation of a wastewater pond improvement plan, and a plan to reduce petroleum flow to the wastewater ponds. If the evaluation of the monitoring well network indicates more wells are needed, additional groundwater monitoring wells will be installed to better characterize and monitor shallow groundwater. A determination of whether groundwater has been impacted by pond discharges shall be made. Monitoring data will be used to determine whether wastewater treatment and/or pond mitigation efforts are necessary. Tm:3/17/00 C M,Dxunau MSO N'SW TROVO nkI.