SITE INFORMATION AND CORRESPONDENCE

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Mr. Eric J. Holm March 26, 1997 Page 5 Based on activities conducted at the building, soil and soil gas samples at 10 and/or 20 feet bgs should be collected in the following areas: (a) The area adjacent to and beneath the building, the aboveground tanks located outside of the building, and the Banbury mixing stations (mixers); and (b) The area along the sewer lines and adjacent to the building's floor drains. (7) Building No. 7. The labor intensive products which Holz manufactures are assembled in this building (Handbuild Department). Soil gas samples at 10 and/or 20 feet bgs should be collected beneath the building and in the area adjacent the hydrotest to determine if on-site operations have caused any VOCs contaminations, and the extent of contamination migrated from upgradient locations. (8) Buildings No. 8 and 9. Building No. 8 is a warehouse which stores the finished products, and Building No. 9 is the Expansion Joint Department assembling pressure piping networks and fuel ducting systems. The spray booth, the autoclave areas, and the shot blast furnace are located near the rear portion of Buildings No. 8 and 9. The spray booth is used to apply adhesives to rubber components. The two autoclaves are used to adhere rubber to metal; and the shot blast furnace is used to vulcanize rubber. The solvents; i.e., MIK, MEK, PCE, toluene mixed in Building 1 are used here in the spray booth. A WE value up to 404 ug/I was found in the groundwater sample collected downgradient from these two buildings. Because the highest levels of TCE and metals were detected in the groundwater downgradient from these two buildings, depth-discrete soil and soil gas samples at 10, 20, and/or 30 feet bgs need to be collected at the following locations to determine if soils are contaminated with metals, VOCs, semi-VOCs,phenolic compounds, and TPH and extent of the contamination: (a) The area adjacent to and beneath the spray booth, autoclave area, and the shot blast furnace; and