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Mr. Eric J. Holm <br /> March 26, 1997 <br /> Page 4 <br /> (5) Building 5. The building consists of a boiler, a"burn-off' oven to burn- <br /> off the adhesives and to separate the metal from rubbers, and a millroom. <br /> The building's floor drains are connected to the City's industrial sewer <br /> lines. Solvents including methylene chloride have been used to aid in the <br /> removal of rubber. Releases of water/oil emulsion occurred in this <br /> building in 1982 and 1991, respectively. <br /> Based on types of activities conducted at this building, soil and shallow <br /> soil gas samples (10 and 20 feet bgs) are need at the following locations: <br /> (a) The area beneath and adjacent to the boiler and"burn-off'oven; <br /> (b) Beneath the millroom, along the sewer lines, and in areas adjacent <br /> to the floor drains; <br /> (c) Along the City's industrial sewer lines beneath Sacramento Street. <br /> Additional soil gas sampling at 30 feet may be conducted <br /> depending on the results of shallow soil gas samples. Soil samples are <br /> collected to determine if soils in these areas are contaminated with metals, <br /> semi-VOCs, phenolic compounds, and TPH. <br /> (6) Building No. 6. This building is used to store crude rubber, plasticizers, <br /> and additional chemical constituents used to manufacture rubber. <br /> Processed oil is stored outside of Building No. 6 in two aboveground <br /> tanks. Oil and other chemicals are mixed at the three Banbury mixers for <br /> use in the manufacturing process in Building No. 5. Cooling water from <br /> the three Banbury mixers have been discharged into the City's industrial <br /> sewer lines(permitted by the City). Cooling water is treated with a <br /> corrosion(hardness) inhibitor, as well as a chlorine-based microbial <br /> inhibitor. It is unknown what types of compounds contained in the <br /> corrosion inhibitor(Le.,chromium? cadmium?). Accidental release of <br /> approximately 50 gallons of liquid plasticizer(Phosflex 41-P) occurred in <br /> June 1994. A small amount entered a floor drain and was released into the <br /> City's storm drain. According to the MSDS, the liquid plasticizer <br /> contained phenol, isopropylated phenol,triphenyl phosphate and other <br /> chemical compounds. <br />