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1 <br /> 1 Ms Vicki McCartney Project No 880-040 1A <br /> • January 30, 2004 <br /> Page 2 <br /> Remedial activities conducted on January 26, 2000, included removal of approximately <br /> 262 tons of impacted soil in the area below dispenser and product lines Excavation <br /> areas were selected based on the January 7, 2000, sampling results Excavation was <br /> restricted laterally by concrete canopy footings and asphalt surfacing Due to close <br /> proximity of groundwater, the maximum excavation depth was approximately 10 feet <br /> bgs <br /> On August 15 and 16, 2000, five Geoprobeo borings (GP-1 through GP-5) were <br /> completed using a direct push rig The borings were advanced to groundwater, at which <br /> time a discrete water sample was collected Following groundwater sample collection, <br /> the borings were continued to a maximum depth of 30 feet bgs <br /> On September 6, 2000, three groundwater monitoring wells (MW-1 through MW-3) <br /> were installed The well locations were selected based on the Geoprobee investigation <br /> results Well locations are shown on Figure 1 Quarterly groundwater monitoring and <br /> sampling was initiated in September 2000 <br /> On May 22 and 23, 2002, Shaw observed the drilling of one deep soil boring and the <br /> installation of two monitoring wells (MW-4 and MW-5) A dual phase extraction (DPE) <br /> test was conducted from June 10 through 15, 2002 The DPE test was conducted by <br /> simultaneously extracting soil vapor and groundwater from well MW-1 <br /> On September 2 and 3, 2003, Shaw observed the advancement of four CPT borings <br /> Discrete groundwater samples collected from Hydropunch° bonngs advanced adjacent <br /> to the CPT borings indicated the presence of methyl tert-butyl ether (MTBE) in <br /> groundwater downgradient of the site, but the vertical extent of MTBE appears limited <br /> to within approximately 30 feet bgs J <br /> Shaw Environmental, Inc <br /> N 1,;acDP120041Prj1880\8800401 A 4aa doc <br />