Laserfiche WebLink
i <br /> i <br /> cAMBRIA <br /> Sampling Methods• Soil types encountered in boring CPT-1 were logged using <br /> CPT logging techniques The CPT log is presented in <br /> Appendix B Soil and water samples were collected at <br /> approximately 10 to 15 foot intervals for description, potential <br /> chemical analysis, and headspace analysis of the soil samples <br /> Number of Borings One soil boring (CPT-1) was drilled at the location shown on <br /> Figure 2 <br /> Boring Depths. Boring CPT-1 was drilled to approximately 112 7 fbg(Table 1) <br /> Soil Types Soil types encountered during drilling consisted predominantly <br /> of silt, clayey silt, and sandy silt (ML) with lesser amounts of <br /> silty sand (SM), and sand (SP) at varying depths and thicknesses <br /> to the total depth explored of 112 7 fbg Soil types are recorded <br /> on the CPT logs (Appendix A) <br /> Chemical Analyses• Soil and groundwater samples were analyzed for total petroleum <br /> hydrocarbons as gasoline (TPHg), total petroleum hydrocarbons <br /> as diesel (TPHd), BTEX, fuel oxygenates (methyl tertiary butyl <br /> ether [MTBE], tertiary amyl methyl ether, ternary butyl alcohol <br /> [TBA], di-isopropyl ether, ethyl tertiary butyl ether, and <br /> ethanol), and lead scavengers (1,2-dichloroethane and 1,2- <br /> dibromoethane) by EPA Method 8260B <br /> HYDROCARBON DISTRIBUTION IN SOIL <br /> No TPHg, TPHd, BTEX, or lead scavengers were detected in soil samples collected from boring <br /> CPT-1 MTBE was detected in soil samples from boring CPT-1 at 10 and 20 fbg at <br /> concentrations of 1 1 and 17 ppm,respectively TBA was detected at a concentration of 7 0 ppm <br /> in a soil sample collected from boring CPT-1 at 10 fbg No other fuel oxygenates were detected <br /> in soil samples from boring CPT-1 <br /> The soil chemical analytical data are summarized in Table 2 and are presented on Figure 2 The <br /> certified analytical report is presented in Appendix B <br /> • <br /> 0813 4 <br />