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For the specific soil sample analyses, please refer to Tables A through F Copies of the excavation activity analytical laboratory reports and chain-of-custody forms are presented in Appendix C EXCAVATION AND STOCKPILE SAMPLING PROTOCOL Excavation Soil Sampling Verification soil samples were collected from the excavation base or sidewalls as appropriate Soil samples were collected from the excavator bucket by removing the top few inches of soil and pushing a clean, six-inch-long, two-inch diameter, brass sample tube into the soil until completely full The ends of the sample tubes were covered with aluminum foil and sealed with plastic end caps The samples were then labeled, placed in a cooler with ice, entered on a chain-of-custody form and transported to a Sequoia Analytical, a State-certified laboratory, located in Redwood City, California Stockpile Sampling Discrete stockpile samples were collected for approximately every 25 cubic yards • of soil generated Sets of four samples were composited into one sample for analysis by the laboratory All stockpile samples were collected by removing the top 6 to 12 inches of soil in each stockpile, then pushing a sample tube into the soil until completely full The samples were sealed, labeled, logged on a chain-of custody form, placed in a cooler with ice and transported to the laboratory Drill cuttings from the soil borings were stockpiled on the site After receipt of the chemical analytical report the drill cutting stockpile was removed by Integrated Waste Management DRILLING ACTIVITY SUMMARY Exploratory Soil Borings On February 6 and 7, 1996 exploratory soil borings MW-1 through MW-4 and B-1 through B-4 were drilled by V&W Drilling, Inc to total depths ranging from 16 1/2 to 27 feet bgs The locations of the soil borings and monitoring wells are shown on Figure 1 A truck-mounted drilling rig equipped with eight-inch diameter hollow- stem augers was used to drill the eight exploratory soil borings The borings were logged by a Touchstone geologist using a modified Unified Soil Classification System (ASTM-2488) Investigative procedures are presented in Appendix A Exploratory boring logs and key are presented in Appendix B 9-8264tpwn page 4