Laserfiche WebLink
22 August 2003 <br /> AGE-NC Project No. 02-0896 <br /> Page 4 of 5 <br /> 1 with the Unified Soil Classification System. Soil boring logs exhibiting soil profiles are depicted in <br /> Appendix A. <br /> 4.0. FINDINGS <br /> The shallow subsurface soil profile was modeled from visual description of soil samples collected <br /> from the soil boring at the site. The potential contamination to soil was assessed by laboratory <br /> 1 analysis of selected samples.Discussion of shallow subsurface soil profile and soil analytical results <br /> are presented below. <br /> ' 4.1. STRATIGRAPHY <br /> Dark brown to gray,alternating layers of silty clay and silt containing gravel were encountered from <br /> the surface to depths of approximately 35 feet bsg,gray claywas encountered between 35 and 40 feet <br /> bsg, and brown fine sand with silt was encountered at 50 feet bsg; there was no soil recovery at <br /> '• 45 feet bsg. <br /> Organic vapor was detected in the soil samples collected at a maximum concentration of 225 parts <br /> per million (ppm) in soil sample P1-20. Hydrocarbon-like odor was detected in five of the soil <br /> samples from the boring. The soil boring logs are provided in Appendix A; organic vapor field <br /> measurements are included on the boring logs. <br /> 4.2. ANALYTICAL RESULTS OF SOIL SAMPLES <br /> TPH- was detected in soil samples P1-20 P1-25 P1-30 and P1-35 at concentrations between <br /> g p , <br /> 4.2 milligrams per kilogram(mg/kg or parts per million: ppm)in sample P 1-30 to 11,000 mg/kg in <br /> sample P 1-20. <br /> Toluene,ethylbenzene and xylenes were detected in samples P 1-25,P 1-30 and P 1-3 5,ethylbenzene <br /> and xylenes were detected in sample P 1-20,and xylenes were detected in sample P 1-40,at maximum <br /> concentrations of 3.1 mg/kg toluene(P 1-25), 11 mg/kg ethylbenzene(P 1-20)and 600 mg/kg xylenes <br /> ' (P 1-20). <br /> No additional target analytes were detected at or above laboratory detection limits in the samples <br /> ' analyzed.Analytical results of soil samples are summarized on Table 1.The laboratory report(CTEL <br /> Lab Project. No. CT214-0303012) and chain-of-custody are provided in Appendix B. <br /> Advanced Geo Environmental,Inc. <br />