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Ms. Wendy Cohen <br /> May 19, 2005 <br /> Page 4 of 5 <br /> Soil Analytical Results <br /> On April 4 and 5, 2005 five soil borings were advanced at the subject site. Soil samples were <br /> analyzed by Argon for TPHg, TPHd, and BTEX. Additionally, selected samples were also <br /> analyzed for gasoline oxygenate additives including EBD and 1,2-DCA. <br /> No petroleum hydrocarbon constituents, including gasoline oxygenates/additives, were detected <br /> in soil samples collected from borings SBI, S132, S133, and SB5. TPHd was detected in S134 in <br /> the 25-foot and 45-foot samples at 190 ppm and 160 ppm, respectively. TPHg was detected in <br /> SB4 in the 25-foot and 45-foot samples at 340 ppm and 4.0 ppm, respectively. However, the lab <br /> reported that TPHg detected in the samples from S134 has a chromatographic pattern that does <br /> not match the typical gasoline standard. Heavier hydrocarbons were detected (believed to be <br /> diesel). Xylenes were also detected in S134 in the 25-foot sample at 0.82 ppm. No other analytes <br /> of concern were detected in S134. Soil analytical results are summarized in Table 1. A copy of <br /> the laboratory report is included in Attachment D. <br /> Discrete Groundwater Analytical Results <br /> Discrete groundwater samples were collected from each of the four soil borings advanced by <br /> Ground Zero on April 4 and 5, 2005. The groundwater samples were analyzed by Argon for <br /> TPHg, TPHd, BTEX, and gasoline oxygenate additives including EDB and 1,2-DCA. No <br /> analytes were detected in any of the groundwater samples. Groundwater analytical results are <br /> summarized in Table 2. A copy of the laboratory report including chain of custody <br /> documentation is included in Attachment D. <br /> SUMMARY <br /> Five soil borings were advanced at the site on April 4 and 5, 2005. Soil and discrete groundwater <br /> samples were collected from the borings and analyzed for the appropriate constituents of <br /> concern. No analytes of concern were detected in soil samples collected from borings SB 1, S132, <br /> S133, and S135. Low levels of TPHd, TPHg, and xylenes were detected in two soil samples <br /> collected from SB4. No constituents of concern were detected in any of the discrete groundwater <br /> samples. <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> The results of the boring investigation, taken together with the trench sample results, indicate that <br /> soil is impacted with fuel hydrocarbons, primarily diesel, only in the immediate vicinity of the <br /> G:\GROUNDZE\TIGER'.REPORTS\R"'dSRrcpon.doc <br />