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4�4 -fS <br />DECEMBER 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 nsing 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, one additional <br />groundwater monitoring well was proposed to define the western limits of the soil and <br />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 />December 5, 1995 site visit Free -product and hydrocarbon sheens were not observed <br />in any of monitoring wells <br />Figure 2 is a site plan that includes water level elevations based on the December 5, <br />i1995 water level measurements The water elevations indicate that groundwater was <br />flowing south-southwest under an estimated gradient of 0 003 feet per foot The <br />groundwater elevations were not contoured because the elevations measured in the three <br />wells differ by less than 0 30 feet <br />• <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 summanzes the analytical results from the December 1995 quarterly sampling <br />event. None of the BTEX analytes were detected in the samples TPH-D was not <br />detected in two of the samples TPH-D was reported in sample MW -3 (0 07 mg/L). <br />The laboratory report and chain -of -custody record are provided in Appendix A <br />PARgssYR011VOL1 WP1727211108969109969L06 DOC <br />2 <br />