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' 19 July 2004 • AGE -NC Project No 95-0121 ' Page 6 of 9 ` '26 LABORATORY RESULTS OF CPT SOIL SAMPLES A total of seven (7) discrete soil samples were collected from borings CPT -1 through CPT -4 and submitted for laboratory analysis for the aforementioned constituents, soil samples were collected' from CPT -1 at depths of 68 feet and 91 feet, from CPT -2 at depths of 70 feet and 90 feet, from CPT -3 at depth of 68 feet and 91 feet and from CPT -4 at a depth of 61 feet Analytical results of the ' - soil samples are summarized in Tables 1 and 2 r TPH-g was detected In soil samples collected from CPT -2 at 70 -feet and 90 -feet at concentrations ' of 2 6 milligrams per kilogram (mg/kg) and 2 2 mg/kg, respectively The estimated extent of the TPH-g-impacted soil plume Is depicted on cross-sectional view A -A' (Figure 4) ' Various BTEX compounds were detected from CPT -1 (91 feet), CPT -2 (70 feet and 90 feet) and CPT -3 (91 feet) at maximum concentrations of 0 13 mg/kg (benzene), 0 34 mg/kg (toluene), 0 12 mg/kg (ethylbenzene) and 0 39 mg/kg (total xylenes) 10 .0 MTBE was not detected above laboratory reporting limits in any of the soil samples analyzed 1,2 -DCA was detected In the soil sample collected from CPT -2 at 70 feet at a concentration of 0 010 mg/kg No other petroleum hydrocarbon constituents or fuel oxygenated compounds were detected by laboratory analysis The laboratory report (CTEL Project Number CT214-0402032) and chain-of- custody hain-ofcustody forms are presented in Appendix C, GeoTracker confirmation pages of the submitted laboratory electronic deliverable format (EDF) files are included In Appendix D 2 7 LABORATORY RESULTS OF CPT "GRAB" GROUND WATER SAMPLES A total of fourteen (14) "grab" ground water samples were collected from bonngs CPT -1 through CPT -4 and submitted for laboratory analysis for the above mentioned constituents Petroleum hydrocarbon constituents were detected in a total of seven CPT `grab' groundwater samples from CPT -1 between 96-99 feet (HU5), from CPT -2 between 47-50 feet (HU4), 65-68 feet (HU5), 79-82 feet (HU5) and 95-98 feet (HU5), and from CPT -3 between 50-53 feet (HU4) and 73-76 feet (HU5) Analytical results of the CPT `grab' ground water samples are summarized in Table 3 TPH-g was detected from the above seven CPT `grab' water samples at concentrations between 270 and 30,000 micrograms per liter (µg/1) The highest TPH-g concentrations detected were from CPT -2 between 47 and 50 feet bsg (HU4) TPH-g was detected In the deepest sample from CPT -1 between 96 and 99 feet bsg (HU5) The estimated extent of the' TPH-g-Impacted ground water plume is depicted In cross-sectional view A -A' (Figure 5) s Advanced GeoEnvironmental, Inc