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29 September 2005 AGE-NC Project No 95-0167 Page 2 of 8 ' Avenue right-of-way, approximately 38 feet west of the corner of Aurora Street and Miner Avenue, • Soil boring CPT-7 was advanced to a total depth of 192 feet at the south end of the Larry's Auto parking lot, approximately 14 feet west of monitoring well MW-7, ` • Soil boring CPT-8 was advanced to a total depth of 191 feet on the west side of the Grant Street right-of-way, approximately 40 feet west of monitoring well MW-3, and • Soil boring CPT-9 was advanced to a total depth of 192 feet near the south side of Lindsay Avenue, approximately 37 feet east of the corner of Lindsay Avenue and Grant Street ' (Figure 2) ' At each boring location, the soil parameters of piezocone tip resistance, sleeve friction, and pore water pressure were continuously measured as the piezocone was advanced to depth Utilizing the soil parameters, a computer program interpreted general lithology types based on the CPT Soil ' Behavior Classification System (Robertson, P K , Campanella, R G, Gillespie, D, and Greig, 7 , 1986) and displayed the interpreted lithologies on a continuous CPT boring log The CPT interpretive logs are presented in Appendix B • Rinseateg enerated during drilling activities was containerized in properly labeled, Department of Transportation(DOT)-approved 55-gallon drums and stored on-site in an area lacking public access IThe CPT soil borings were backfilled over their entire depths with a portland cement grout mix ' 2 2 GRAB GROUND WATER AND SOIL SAMPLE COLLECTION AND ANALYSIS Grab ground water and soil samples were collected in twin borings advanced immediately adjacent to the initial CPT sounding The samples were collected utilizing the 25-ton truck-mounted CPT drill rig equipped with 1 75-inch diameter hollow-stem rods fitted with a HydroPunch ground water sampling assembly or a piston soil sampling assembly, which was pushed to specified sampling depths in each boring, diagrams of the sampling assemblies are illustrated in Appendix B Ground water and soil samples were collected from specified depth intervals (zones)based on CPT lithologic data acquired from the initial CPT sounding indicating favorable conditions for sampling ' Ground water samples were collected by pushing the HydroPunch sampling assembly to specified zones, then withdrawn approximately 4 feet to expose an inlet screen, the interior of the sampling tool filled with water and a 1-inch outer diameter stainless steel bailer was lowered and utilized to ' extract a ground water sample Each ground water sample was transferred into three laboratory- supplied 40-m1 volatile organic analysis (VOA) vials containing 0 5 ml 18% hydrochloric acid ' Advanced CeoEnvironmcntal,Inc I