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Working To Restore Nature <br /> analyses of benzene, toluene, ethylbenzene, xylenes (BTEX), total petroleum hydrocarbons as <br /> gasoline (TPHg), total petroleum hydrocarbons as diesel (TPHd), ethylene dibromide, and total <br /> lead as appropriate Analytical results indicated that no significant residual hydrocarbons were <br /> detected from beneath the tanks, dispenser, or product lines, with the exception of an apparent <br /> leak dunng the removal of product lines near one of the tanks The soil impacted as a result <br /> of the leak was apparently removed at the time of the spill Due to questionable delivery times <br /> of samples to the laboratory, confirmation samples were collected by Epigene International on <br /> March 21, 1994 Results of the March 21, 1994 samples indicated a minor release of gasoline <br /> hydrocarbons may have occurred in fill material south of the sidewalk along the former product <br /> lines Analytical results of soil samples collected by Epigene International are summarized in <br /> Table 3 and Laboratory Data Sheets are included in Appendix II Sample locations reported by <br /> Epigene International are included on Figure 3 <br /> 3.3 Groundwater Monitoring and Samplinfb g <br /> Five rounds of groundwater sampling have been conducted at the site since October 1989 <br /> No petroleum hydrocarbon constituents have been detected above method detection limits at any <br /> time during the groundwater sampling program The historical analytical results of groundwater <br /> samples collected from well MW 1 are summarized in Table 2 Purge logs, analytical reports <br /> and chain of custody documentation for the most recent sampling of the well (March 17, 1994) <br /> ' are included in Appendix III <br /> 4.0 EXISTING CONDITIONS <br /> 4.1 Soil <br /> Soils beneath the site are fine grained, consisting of clays and silts with some silty sand <br /> Residual soil contamination remains beneath the facility building and sidewalk Analytical data <br /> Iindicates residual impacted soils occupy a lateral semi-circular configuration with an estimated <br /> maximum radius of approximately 12 to 14 feet from the northern extent of the former <br /> excavation The estimated lateral extent of residual soil impaction is shown on Figures 4 <br /> OW01481REPORTS%CR-0694 FNL 5 <br />