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v <br /> 30 May 1996 <br /> AGE-NC Project No. 96-0224 <br /> Page 3 of 5 <br /> and labeled. Samples were placed in a chilled container and relinquished under chain-of-custody to <br /> an on-site mobile laboratory(Mobile One Laboratory Inc.: MOL). <br /> Ms. Linda Turkatte of the PHS-EHD was on-site during the soil sampling and laboratory analysis of <br /> L the samples. <br /> 4 3.2. SOIL LOGGING AND PROBING COMPLETION <br /> Soil was extruded from the remaining brass sleeves and screened for the presence of hydrocarbon <br /> vapors. The soil was then described in accordance with the Unified Soil Classification System (see <br /> Probe Boring Logs, Appendix B). <br /> �. All probe borings were backfilled to surface grade with Portland Cement. <br /> 'r 3.3. LABORATORY ANALYSIS <br /> Soil samples were analyzed for total petroleum hydrocarbons quantified as gasoline and diesel (TPH- <br /> `' g and TPH-d),volatile aromatics(benzene,toluene, ethyl benzene and xylenes: BTE&X) and methyl- <br /> tert-butyl ether(MTBE)in accordance with EPA methods 5030/8015m, 8020 and 8260, respectively. <br /> 4.0. FINDINGS <br /> 4.1. STRATIGRAPHY <br /> During the advancement of probe borings P1,P2 and P3, brown silty sand was encountered from the <br /> surface to depths of approximately 5 feet bsg. Silty clay was then encountered from 5 to 10 feet bsg. <br /> Brown silty sand was encountered again at 15 feet. A stiff clay layer was encountered at <br /> approximately 15 to 16 linear feet in probing P2, and the probe boring could not be advanced further. <br /> Silty clay was then encountered at 20 feet bsg and brown silty sand was encountered at 25 feet bsg. <br /> Hydrocarbon odors were concentrated in the soil between 5 and 15 feet in depth. <br /> During the advancement of probe boring P4,gray-brown silty clay was encountered from the surface <br /> to approximately 25 linear feet. Silty sand was encountered from 25 linear feet to total depth of the <br /> probe boring(30 linear feet).Hydrocarbon odors were encountered from samples collected at depths <br /> ranging from 15 to 25 linear feet_ <br /> V <br /> V <br />