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i • Ripona Market Vertical Groundwater Investigation&November 2443 Quarterly Report Page: 4 k Boring B-3 was located east of the original UST excavation on November 19, 2002. Uncertain that the Geoprobe could penetrate the soil below 38 feet in depth an attempt to drill, without soil sampling, directly to 60 feet in depth was made. -.. The Geoprobe was unable to penetrate below 38 feet in depth. A water sample k was collected at 38 feet and the hole abandoned. The water sample contained 1.1 µg/L Toluene. Soil samples for laboratory or geological interpretation were not collected. Since the Geoprobe was not able to penetrate the consolidated sandy clays, the remainder of the work was rescheduled with a hollow stem auger and Simulprobe i sampling device. --� On January 21, 2003 M.J. Kloberdanz & Associates, using a hollow stem augur and Simulprobe sampling device provided by V&W Drilling, advanced a soil boring to a depth of 60 feet to collect soil and water samples west of the former UST excavation (B-4). Soil samples were successfully collected every five feet for geological interpretation with selected samples submitted for laboratory analysis. Laboratory groundwater samples were collected at 45 and 60 feet in �- depth with use of the Simulprobe sampling device. All laboratory soil samples were below detection limits for the compounds analyzed. Low levels of gasoline, toluene, and MTBE were present in the 45-foot water sample. High levels of ethanol were also detected in the 45-foot and 60 feet water samples collected with the Simulprobe. Boring B-5 was drilled on January 22, 2003 at the southeast corner of the Ripona Market store building. This boring was extremely difficult to sample because of the unconsolidated heaving sands below the water table. A grab water sample was collected at 30 feet in depth through the hollow stem augur. An attempt to sample with the Simulprobe was made at 45 and 55 feet in depth. Once the bit y was removed for the Simulprobe sampling device, loose sand flowed into the augur. The driller was unable to push the Simulprobe sampler out of the bottom of the augur to collect a discrete water sample. However, the soil sample collected in the Simulprobe was retrieved and analyzed. A soil sample was also collected from the bottom of the drill bit at approximately 56 feet in depth and submitted for laboratory analysis. All laboratory soil samples collected from the boring reported non-detectable concentrations for the compounds analyzed. The water sample collected at 30 feet contained high concentrations of ethanol. Boring B-6 was drilled on January 23, 2003 in the alley west of the Ripona Market facility. The boring was advanced with difficulty to 60 feet due to • heaving sands with water samples collected by the Simulprobe at 45 and 60 feet. A grab water sample was collected through the augur at depths of 30 to 35 feet. All soil samples reported contamination levels below laboratory detection limits } } for the compounds analyzed. The 35 and 45-foot water samples contained levels of ethanol. i F i i