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Dr. John Farr Farr Associates June 30, 1997 Page 4 Buildings and 4 One geoprobe boring will be advanced on the east side of building three and two within building four to a depth of approximately 10 feet bsg. The borings will be installed in the area of the soluble oil trench. Additional borings or additional depth of the proposed borings may be advanced based on field results. Soil samples will be analyzed for TOG. Building 5 Area Two hand auger borings,two soil vapor/soil borings,one soil vapor point,and one geoprobe boring will be installed in the vicinity of building 5. The two hand auger borings will be installed to a depth of approximately six feet bsg and samples will be collected at three and six feet bsg. Soil samples will be analyzed for TOG, BTEX, and CAM 5 Metals to evaluate material potentially emanating from the railroad area east of the site. The two soil vapor/soil borings will be installed in the vicinity of a former steam cleaning sump. Vapor samples will be collected from 10 and 20 feet bsg and analyzed for TPH as gasoline, BTEX, and VOCs. Soil samples from these depths will be analyzed for SVOCs, metals, and TPH as diesel. A soil vapor probe will be installed adjacent to the cooling water reservoir and vapor samples collected at 10 and 20 feet bsg. Vapor samples will be analyzed for VOCs. The soil boring west of the boiler will be installed to evaluate the soluble oil return trench. Samples from this boring will be collected at 10 and 20 feet bsg and analyzed for TOG CAM 5 Metals,and SVOCs. Building 6 The eastern most monitoring well is proposed to be installed within the eastern end of building 6. In addition, two soil vapor /soil sample will also be installed. The soil vapor/soil sample points will be installed to depths of approximately 20 feet bsg. Soil samples will be collected at five foot intervals for field screening and geologic logging from the geoprobe borings. Soil samples collected from 10 and 20 feet bsg will be submitted for chemical analysis of CAM 5 metals, Phenolic compounds, and SVOCs. Soil vapor samples will also be collected at 10 and 20 feet bsg and analyzed for VOCs. The methods used for the chemical analyses are presented in Enclosure C and the sample locations are presented in Figure 3. Building 8 One soil vapor probe is proposed in the vicinity of building 8 adjacent to a spray booth. The probe will be advanced to an approximate depth of 20 feet bsg. Vapor samples will be collected at 10 and 20 feet bsg will be submitted for chemical analysis of VOCs. The sample locations are shown on Figure 3. Building 9 and 10 Three soil vapor probes and one hand auger boring are proposed in the vicinity north of building 10 and south of building 9. Soil vapor samples will be collected at 10 and 20 feet bsg and analyzed for VOCs. These borings will be advanced in 10 foot intervals if any volatile compounds are observed during field screening. These probe locations are in the vicinity of BEM soil boring B-2 (Figure 2) which reported elevated concentrations of TCE and PCE. Soil samples will also be collected from the boring adjacent to the shot blast furnace. This geoprobe point will be advanced to a depth of approximately 20 feet bsg. Soil samples at 10 and 20 feet bsg will be analyzed for CAM 5 metals. The hand auger boring will be installed to a depth of approximately six feet bsg and samples will be collected at three and six feet bsg.