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participation on the proposed corrective action. <br /> 10-00-93 Three additional MWs and three VWs are installed. <br /> 01-04-94 PHS-EHD visits site to observe soil sampling from the former diesel and <br /> waste oil tank pits after additional soil was removed. <br /> The bulk of the impacted soil was removed from diesel tank pit <br /> with some limited soil impact remaining in a very thin lens at 8-9' <br /> bgs that overlaid a hard pan layer. The hard pan layer beneath <br /> this thin lens appeared odorless and with no discoloration. <br /> Representative samples were obtained from the impacted lens <br /> area as well as beneath it from the hard pan area. A telephone <br /> pole anchor was uncovered on the north wall of the tank pit at <br /> approx. 4' bgs. The impacted soil was removed from this area to <br /> the maximum extent practicable. The finished excavation showed <br /> a small area of impact around this anchor. A representative <br /> sample was obtained from this area. <br /> The waste oil tank pit showed no olfactory or visual evidence of <br /> contamination. One soil sample was obtained from approx. 9' <br /> bgs. <br /> 04-11-94 PHS-EHD receives report of the latest field work. Soil sample results are <br /> attached. <br /> 04-20-94 The results of the sampling from the diesel tank pit are presented to <br /> staff at a staff meeting. The resample from the area showing the <br /> highest TPH diesel concentration (11,000 ppm) is subjected to the waste <br /> extraction test using deioniaed water. The soluble result is 2.6 ppm. As <br /> the additional impacted soil is limited in extent, is impracticable to <br /> remove, and does not appear to pose a significant threat to <br /> groundwater, staff concurs that no additional work with respect to the <br /> diesel tank pit is warranted. <br /> 07-05-94 PHS-EHD receives a draft CAP. The CAP has been past due. <br /> 07-08-94 PHS-EHD performs site visit for public participation for the proposed <br /> corrective action of soil vapor extraction. <br /> 09-27-94 A new consultant is hired to conduct the corrective action phase of the <br /> investigation. PHS-EHD receives a workplan from the new consultant <br /> for two additional vapor wells to be located near the dispenser island for <br /> a more direct and shorter cleanup. <br /> 2 <br />