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0 0 California Regional Water Quality Control Board - `/ Central Valley Region j Winston H.Hickor Steven T.Butler,Chair Gray Davis Secretary Jar Sacramento Main Office Governor Environmental Intemet Addmss: http://w .sw b.ca.gov/— gcb5 Protection 3443 Routier Road,Suite A,Sacramento,Califomia 95827-3003 Phone(916)255-3000•FAX(916)255-3015 21 August 2000 Mr. James Hamrick Owens-Brockway 14700 W. Shulte Road "'953'76 WASTE OIL CONTROL IMPROVEMENTS AND FURNACE TAP WATER SAMPLING EVENT, OWENS BROCKWAY GLASS FURNACE, OWENS ILLINOIS, SAN JOAQUIN COUNTY I have reviewed the 7 July 2000 Furnace Drain and Waste Oil Reduction Report, prepared by Owens Brockway. The proposed procedures for reducing waste oil in the wastewater are approved with the provisions that Owens Brockway: (a) perform adequate maintenance of the equipment, and (b) monitor the oil separators and the holding tanks to prevent waste oil from being discharged to the process wastewater ponds. The furnace drain water sampling was performed to determine the quality of the wastewater generated in that process. The wastewater quality evaluation was required to determine the acceptability of the furnace drain wastewater for disposal in the on-site stormwater ponds. The following observations are noted: • Several volatile organic compounds were detected at low concentrations in samples collected. The compounds reported are all trihalomethanes. The source of the trihalomethanes is suspected to be from the sample collection container which previously contained bromide tablets. • Hexavalent chrome (chrome VI) was detected in the furnace drain water and the industrial supply well samples. The highest concentration of chrome VI(20 ug/1) was detected in the industrial supply well; two of four furnace drain samples contained detectable concentrations of chrome VI at a concentration of 10 ug/l. • General mineral concentrations in the furnace drain water were consistent with the water quality in the industrial supply well with the exception of the iron concentration reported in Furnace Drain Sample No. 2 (1,012.1 ug/1). The iron concentrations decreased in the furnace drain samples collected in later sample events. • Furnace drain characterization samples generally fall within the range of values for samples collected from the Well No. MW-2, located upgradient of the process wastewater ponds. Based on the concentrations reported in the furnace drain sampling event, Owens Brockway may continue to discharge furnace drain wastewater to the stormwater ponds. Prior to furnace drain events, California Environmental Protection Aeencv c7Wr,t0�U. bl4t.