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29 December 2000 <br /> AGE-NC Protect No 96-0235 <br /> rPage 6 of 8 <br />' events Analytical results ofwater samples collected dunng the third quarter of 2000 are summanzed <br /> on Table 2, analytical results from previous monitoring events are summarized on Tables 3 and 4 <br /> The laboratory report (MAI Sample Nos 42801 through 42809, 42941 through 42943and 44941 <br />' through 44948), chain-of-custody forms and the laboratory QA/QC report are included in Appendix <br /> B <br /> r 3 <br /> 3 STRATIGRAPHY <br /> rIn general, gray to brown silty to sandy clay was encountered from 15 feet bsg to 25 feet bsg Gray <br /> clayey to silty sand was encountered at approximately 30 feet bsg Olive to blue gray clay, silty clay <br />' and clayey silt was encountered between 35 feet and 45 feet bsg Boring logs are included as <br /> Appendix C Lithologic cross sections are included as figures 4 and 5 <br /> 34 ANALYTICAL RESULTS OF SOIL SAMPLES <br /> A total of 19 soil samples were analyzed for TPH-g, TPH-d, BTEX, and five fuel additives by EPA <br /> Method 8015, 8020 and 8260 Modified, respectively ` <br /> • TPH-g was detected soil samples collected from EW-1 at concentrations ranging from 3 5 <br /> milligrams per kilogram in the sample collected from 30 feet bsg to 4,400 mg/kg in 20-foot <br /> sample <br /> • TPH-d was detected in soil samples collected from MW-13B and EW-1 at concentrations <br /> ranging from 4 4 mg/kg (EW1-40) to 13,000 mg/kg (EWl-20) , <br /> I • Benzene was detected in soil sample EW1-20 at a concentration of 4 mg/kg <br /> • Toluene was detected in samples collected from EW-1 ranging from 0 20 mg/kg (EWl-30) <br /> Ito 220 mg/kg (EWl-20) <br /> ! Ethylbenzene and total xylenes were detected in samples collected from EW-1 at <br /> concentratiozis as high as 91 mg/kg and 480 mg/kg, respectively <br /> • MTBE was detected at concentrations of 34 µg/kg and 23 µg/kg in samples collected from <br /> MW-13B at depths of 35 feet and 45 feet bsg, respectively Additionally, MTBE was <br /> detected in EW-1 at a concentration of 41 µg/kg in the 30-foot sample <br /> Analytical results of soil samples are summarized on Table 5 The laboratory reports (MAI <br />' Laboratory I D Nos x 44146-44164),quality assurance and quality control(QA/QC)report and cha.m- <br /> of-custody forms are included in Appendix D <br /> 4 Advanced GcoEnvironnmental,Inc <br /> I <br />