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r4 y1 <br /> JUNE 1995 <br /> . QUARTERLY STATUS REPORT (CONTINUED) <br /> maximum TPH-D concentration was 16,000 mg/kg The second supplemental site <br /> assessment report was submitted to PHS-EHD in November 1994 <br /> In August 1994, Greyhound returned to a quarterly sampling program in response to a <br /> request from PHS-EHD (letter dated August 12, 1994) The PHS-EHD was concerned <br /> about rising water levels beneath the site and the detection of TPH-D in one of the <br /> groundwater samples collected in June 1994 <br /> The second Supplemental Site Assessment Report was submitted by Greyhound to <br /> PHS-EHD in November 1994 Greyhound has received comments to the Supplemental <br /> Site Assessment Report in a letter dated February 3, 1995 In response, Greyhound <br /> proposes that one additional groundwater monitoring well be installed to define the <br /> western limits of the soil and groundwater contamination <br /> • Water Level measurements from most recent sampling event <br /> Table 1 provides water level measurements and other physical data obtained during the <br /> June 8, 1995 site visit Free-product and hydrocarbon sheens were not observed in any <br /> of monitoring wells <br /> Figure 2 is a site plan that includes water level elevations based on the June 8, 1995 <br /> • water level measurements The water elevations indicate that groundwater was flowing <br /> south under an estimated hydraulic gradient of 0 003 feet per foot The groundwater <br /> elevations were not contoured because the elevations measured in the three wells differ <br /> by less than 0 30 feet <br /> • Water Level measurements from previous monitoring events <br /> Table 1 presents the water level measurements and other physical data obtained during <br /> previous monitoring events Free-product and hydrocarbon sheens were not observed <br /> in any of monitoring wells during these events <br /> • Analytical results from most recent sampling event <br /> Table 2 summarizes the analytical results from the June 1995 quarterly sampling event <br /> None of the analytical parameters were detected in any of the samples A copy of the <br /> laboratory report, including the chain-of-custody record, is provided in Appendix A <br /> • Analytical results from previous sampling events <br /> Table 3 presents a summary of the analytical results from all previous groundwater <br /> . sampling events <br /> PARESSYRO11vOL1 WP1727211108969108969LO3 DOC <br /> 2 <br />