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S%.r S---0 21 September 2005 AGE-NC Project No. 05-1282 Page 3 of 7 • Two sets of three monitoring wells, installed at the site as part of the nearby McCormick- Baxter Superfund project and identified in reports as OS-5B through D and OS-6B through D. One set of wells is located southeast of the guard shack(OS-5B through D);the second set is located in the parking area north of the guard shack across Church Street (OS-6B through D). The wells appear to be in good condition and are apparently still being monitored on a regular basis (see Figure 2). • A former asphalt plant is located in the southeast portion of the facility. Equipment associated with the plant appears to still be present. • Mechanical equipment, including an overhead crane,was still present in the facility during the site reconnaissance. • At least four boilers were historically operated at the facility. • A truck scale is located along the eastern side of the facility. • Unique surface features were discovered in the parking area north of the guard shack via aerial photographs, dated 2002. The main features of concern were two 60 foot diameter circles and demarcations indicating corners of a rectangular shape around the circles. Reconnaissance found these features to be aged paint marks on the asphalt surface of the same type as used to mark parking spaces. • Historical documents indicate ground water flow in the southeast corner of the site is towards the southwest.Soil borings generally have encountered ground water at 20 feet below surface grade(bsg)throughout the site,although static water level appears to be between 14 and 16 feet bsg. DRILLING AND SAMPLE COLLECTION Eighteen soil probe borings(B-1 through B-18)were advanced at the site between 03 and 08 August 2005 to collect soil and ground water samples as part of the assessment activities. The field work was performed in accordance with procedures outlined in the AGE-prepared Limited Subsurface Investigation Work Plan, dated 22 July 2005. Borings B-1 through B-17 were advanced to depths of between 15 and 25 feet below surface grade (bsg) using "direct push" technology. A van-mounted hydraulic hammer (Geoprobe 5400) was utilized to drive 1.25-inch diameter probe rods with an attached 1.50-inch diameter soil sampler to the specified depths. Boring B-18 was advanced using a John Deere Skid Steer and a Bosch Brute Breaker Hammer to collect soil samples at 5 and 10 feet bsg. The soil-boring information is summarized in the boring logs provided in Appendix A;boring locations are depicted on Figure 2. Advanced GeoEnvironmental,Inc