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present in groundwater at the site ASE recommends that groundwater <br /> samples be collected from these deeper zones and analyzed for <br /> hydrocarbon degrading bacteria <br /> The vertical extent of contamination in the vicinity of CPT-18 is still not <br /> defined ASE recommends that deeper groundwater samples be collected <br /> in this area to define the vertical extent of contamination Please note <br /> that any deeper drilling in this area will require using a drill rig, probably <br /> a mud rotary drill rig, as the CPT rig was approaching refusal a these <br /> depths <br /> Additional groundwater monitoring wells downgradient of the site are <br /> recommended ASE recommends the installation of shallow (19-foot bgs) <br /> and mid-zone (50-feet bgs) groundwater monitoring wells in the <br /> following locations (a) on the west shoulder of Airport Way near 17971 <br /> Airport, (b) on the west shoulder of Airport Way in front of either 17883 <br /> or 17821 Airport Way, and (c) at the location of CPT-26 on the vacant <br /> property north of the site ASE also recommends a deeper monitoring <br /> well, over 100-feet bgs, at the location of CPT-26, and a shallow well, less <br /> than 20-feet bgs, west of boring BH-A to further define the extent of <br /> contamination in this area <br /> • Wellhead treatment should be considered for the impacted domestic <br /> wells north of the site since further video-logs are not recommended in <br /> the short term <br /> 14 . 0 REPORT LIMITATIONS <br /> The results of this assessment represent conditions at the time of the soil <br /> and groundwater sampling, at the specific locations where the samples <br /> were collected, and for the specific parameters analyzed by the <br /> laboratory <br /> It does not fully characterize the site for contamination resulting from <br /> unknown sources, or for parameters not analyzed by the laboratory All <br /> of the laboratory work cited in this report was prepared under the <br /> direction of an independent CALrEPA certified laboratory The <br /> independent laboratory is solely responsible for the contents a n d <br /> conclusions of the chemical analysis data <br /> Franks One Stop Report — March 2001 <br /> -23- <br />