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' 16 January 2001 <br /> AGE-NC Project No 98-0505 <br />' Page 6 of 9 <br />' approximately 5 feet to 15 feet bsg Tan to brown, moist to saturated clay, clayey sand and poorly <br /> graded sand was encountered from 15 to30 feet A distinct color change from tan or brown to gray <br /> was observed at approximately 20 feet bsg Olive to bluish gray, saturated silty to sandy clay was <br />' encountered from 35 feet to 47 feet bsg Gray, saturated poorly graded sand was encountered from <br /> 47 feet to 65 feet bsg <br />' Saturated soil was encountered in boring MW-6 through MW-8 at approximately 20 feet bsg Boring <br /> logs are included in Appendix A <br />' <br /> 42 ANALYTICAL RESULTS OF SOIL SAMPLES <br /> IA total of 12 soil samples were analyzed for TPH-g,BTEX,seven fuel additives,EDB and 1,2-DCA <br /> by EPA Method 8015, 8020 and 8260 Modified, respectively <br /> TPH-g was detected soil samples collected from MW-6 at concentrations ranging from 4,100 <br /> milligrams per kilogram(mg/kg) in MW6-29 to 18 mg/kg (MW6-65) <br /> lie <br /> • Benzene was detected in samples collected from MW-.6 ranging from 17 mg/kg (MW6-29) <br /> to 0 26 mg/kg (MW6-65) <br />' 0 Toluene was detected In samples collected from MW-6 ranging from 110 mg/kg (MW6-29) <br /> to 0 27 mg/kg (MW6-65) <br /> • Ethylbenzene and total xylenes were detected in samples collected from MW-6 at <br /> Iconcentrations as high as 35mg/kg and 170 mg/kg, respectively <br /> • EDB and 1,2-DCA were detected in samples collected from MW-6 at concentrations as high <br /> as 460 mg/kg and 410 mg/kg, respectively 1,2-DCA was detected in soil sample MW8-30 <br /> at a concentration of 15 mg/kg <br /> • TPH-g and BTEX compounds were not detected above laboratory reporting limits in any of <br /> Ithe soil samples collected and analyzed from MW-7 and MW-8 No fuel oxygenates were <br /> detected above laboratory reporting lnnits in any of the soil samples collected and analyzed <br /> I • Total lead was detected at a concentration of 4 3 mg/kg in the composition sample MW6-29, <br /> 7-15, 8-15 <br /> Analytical results of soil samples are summarized on Table 2 and Table 3 The laboratory reports <br /> (CAL Lab Numbers 3288-1 S through 3288-5S and MAI Laboratory I D No 51966-51977),quality <br /> assurance and quality control (QA/QC) report and chain-of-custody forms are included in <br /> Appendix C <br /> IAdvanced GeaEnvirvnmentat,Inc <br />