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1 ' 04 August 2000 • AGE-NC Project No 97-0300 ' Page 5 of 10 ' Saturated soil was observed in soil sample duplicates at 40 feet bsg in borings MWA, MW-2 and MW-3, ground water levels were measured at approximately 38 feet bsg utilizing a Solinst water level meter Boring logs are included in Appendix A General lithology beneath the site in cross- sectional view is depicted in Figures 3 and 4 ' 2 3 FIELD EVIDENCE OF HYDROCARBON-IMPACTED SOIL.AND GROUND WATER Faint petroleum hydrocarbon odor was encountered in the 5 and 10 foot soil samples collected from ' soil boring P-7 Organic vapor(detected with a PID) was encountered in soil sample duplicates collected from soil ' boring P-7 at depths between 35 feet bsg and 55 feet bsg and from MWA at depths of 5 and 10 feet bsg 24 ANALYTICAL RESULTS OF SOIL SAMPLES �. A total of seventeen soil samples were submitted to a DHS-certified laboratory for analysis of TPH- g, TPH-d, BTEX, MTBE, ETBE,TAME, DIPE, TBA, 1,2-DCA, EDB, methanol and ethanol None I of the above mentioned fuel components were detected by laboratory analysis The analytical results of selected soil samples are summarized in Tables 1 and 2 The laboratory reports (Castle Analytical Laboratory Reference No 3041 and McCampbell Analytical Inc Lab I D No 40272 through 40288) Iand chain-of-custody forms are included in Appendix D Three soil samples (MW1-50, MW2-20 and MW2-35) were submitted for laboratory analysis of permeability, porosity, moisture and total organic content Analysis of MW 1-50 (silty clay/clayey silt)reported an average permeability of 8 x 10' ,porosity at 38 99 percent, moisture at 22 7 percent and organic content at 2 2 percent Analysis of MW2-20 (sandy clayey silt/silty clay) reported an Iaverage permeability of 8 x 10', porosity at 48 65 percent, moisture at 33 6 percent and organic content at 2 3 percent Analysis of MW2-35 (sandy silt/silty sand)reported an average permeability of 2 X 106, porosity at 43 15 percent,moisture at 25 6 percent and organic content at 16 percent IThe laboratory results of the analysis are summarized in Table 3 The laboratory reports (Cooper Testing Laboratory Job No 255-014) and chain-of-custody forms are included in Appendix E IOne soil sample (MW3-50) was submitted for microbial enumeration and physicochemical laboratory analysis The results of the analysis indicated that hydrocarbon-degrading microorganisms were detected at 26,000 CFU (colony forming units) per gram The laboratory indicated that these physicochemical conditions at the site were well within the range necessary to support microbial Advanced GeoEnvironmental,Inc I