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AV. 08 .lune 2003 AGE-NC Project No.02-0961 Page 4 of 5 Lo three laboratory-supplied, 40-m1 volatile organic analysis- (VOA) vials containing 0.5 ml Lo hydrochloric acid (18%) as sample preservative, one laboratory-supplied and 1 Iiter amber bottle without sample preservative.After collection,the samples were properly labeled,placed in a chilled container and transported under chain-of-custody to CTEL.The samples were analyzed for the same '- petroleum hydrocarbon products listed in Section 3.2. LM 4.0. FINDINGS The stratigraphy and ground water hydro geology underlying the site was characterized from the field descriptions. Hydrocarbon impact to the soil and ground water was assessed by laboratory analysis. 4.1. STRATIGRAPHY Fill material consisting of well compacted fine sand and silt was encountered from surface grade to approximately 8 feet below surface grade (bsg). Brownish-gray, brown or gray silt was generally encountered between 8 feet and approximately 20 feet bsg. Interbedded with the silt in the area of *. boring B1 and B5 were thin, laterally discontinuous clay layers at approximately 15 feet to 16 feet bsg(Figure 3). Gray to tan fine sand was encountered at approximately 20 feet bsg in every boring except in boring B3,where silt was encountered. Brown to dark-brown clay underlies the sand, from approximately 25 feet bsg to 30 feet bsg.Brown and gray medium sand with clay was encountered at approximately 30 feet bsg to 31.5 feet, the total depth of the borings. f No hydrocarbon-like odor was detected in any of the soil samples collected from the five soil borings.Organic vapor was detected by the OVM in soil samples collected from borings B2 and B3 at concentrations as high as 2 parts per million(ppm) in sample 132-25. A stratigraphic cross section is depicted in Figure 3. The soil boring logs are provided in Appendix A; organic vapor field measurements are included on the boring logs. 4.2. HYDROCARBON-IMPACTED SOIL A total of ten soil samples from the five soil borings were analyzed for the petroleum hydrocarbon products listed in Section 3.2. No target analytes were detected at or above laboratory detection 160 limits in the samples analyzed. Analytical results of soil samples are summarized on Table 1. The laboratory reports (CTEL Project No. CT214-0303093), quality assurance and quality control (QA/QC) report and chain-of-custody forms are included in Appendix B. Advanced GwEnvironmental,Inc. V