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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> ORDER NO. 91-056 <br /> a <br /> NPDES NO. CA0004839 <br /> FEB 2 7 A rl M1 <br /> WASTE DISCHARGE REQUIREMENTS ENVIRONMENTAL HEALTH <br /> FOR PERMIT/SERVICES <br /> LIBBEY-OWENS-FORD COMPANY <br /> LATHROP PLANT NO. 10 <br /> SAN JOAQUIN COUNTY <br /> The California Regional Water Quality Control Board, Central Valley Region, <br /> (hereafter Board) finds that: <br /> 1. Libbey-Owens-Ford Company, Lathrop Plant No. 10, (hereafter Discharger) <br /> submitted a Report of Waste Discharge, dated 15 March 1990, for reissuance <br /> of its National Pollutant Discharge Elimination System (NPDES) Permit No. <br /> CA0004839. The property (Assessor's Parcel Nos. 195-270-62, 195-270-64, <br /> and 195-270-04) and facility are owned and operated by the Discharger. <br /> 2. The Discharger proposes to discharge the following waste streams: <br /> a. Discharge 001 consists of a maximum flow of 0.30 million gallons per <br /> day (mgd) of industrial wastewater from the production of <br /> Architectural Float Glass. <br /> b. Discharge 002 consists of a maximum flow of 0.40 mgd of industrial <br /> wastewater from the production of Tempered Automotive Glass. <br /> C. Discharge 003 consists of a maximum flow of 0.40 mgd of industrial <br /> wastewater from the production of Laminated Automotive Glass. <br /> d. Discharge 004 consists of a maximum flow of 25,000 gallons per day <br /> (gpd) of domestic wastewater treated in an extended aeration <br /> basin/settling tank package plant and disinfected by chlorination. <br /> e. Discharge 005 consists of a maximum flow of 0.30 mgd of noncontact <br /> cooling waters and blowdown. <br /> f. Discharge 006 consists of spent hydrofluoric acid solution, used to <br /> wash the glass. Based on the minimum daily flow rate from the plant <br /> of 0.5 mgd, plus the maximum expected hydrofluoric acid wash water <br /> flow of 0.024 mgd, the fluoride concentration in the effluent will <br /> not exceed 23 mg/l . This process is scheduled to operate two weeks <br /> every 2-3 months. <br /> 3. Portions of the industrial wastewaters (Discharges 002 and 003) are <br /> treated in an oil/water separator before discharge. <br />