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05 February 2015 <br /> AGE Project No. 14-3298 <br /> Page 4 of 5 <br /> • Volatile organic compounds (VOCs) and IPA in accordance with EPA-method <br /> 8260B. <br /> EQUIPMENT DECONTAMINATION <br /> Prior to sample collection, Geoprobe soil-vapor sampling equipment was thoroughly <br /> rinsed with clean water after being washed with a solution of Alconox. Geoprobe rods <br /> were thoroughly cleaned prior to soil probe boring advancement. <br /> BORING ABANDONMENT <br /> Following sample collection, each boring was permanently sealed to prevent vertical <br /> migration of potential contaminants. Soil borings were abandoned by backfilling with <br /> Portland cement from the total depth to surface grade. <br /> FINDINGS <br /> Soil-vapor samples collected at five feet bsg from borings V-1 through V-4 and at ten <br /> feet bsg from boring V-6 were analyzed for TPH-g and VOCs; the remaining soil-vapor <br /> samples were held at the laboratory for potential analysis. No analytes were detected <br /> above laboratory reporting limits in the soil-vapor samples analyzed. <br /> Additionally, the laboratory was contacted regarding the remaining soil-vapor samples; <br /> due to the short hold time, the laboratory performed a "screen" analysis of the remaining <br /> samples but did not report the results. Based on verbal confirmation from the laboratory, <br /> no analytes were detected above laboratory reporting limits in the soil-vapor samples <br /> collected from borings V-1 through V-4 at ten feet bsg and from boring V-5 at five feet <br /> bsg. <br /> The soil-vapor laboratory report (CTEL Project No. CT214-1501120), quality assurance <br /> and quality control (QA/QC) reports, and chain of custody forms are included in <br /> Appendix A. <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> Based on the data collected from this investigation, AGE concludes TPH-g and VOCs <br /> were not detected above laboratory reporting limits in soil-vapor samples analyzed from <br /> borings V-1 through V-6. Based on soil-vapor samples collected from the site and <br /> historical investigations at the site, AGE recommends that no further environmental <br /> investigation be performed at the site. <br /> Advanced GcoEnvironmental,Inc. <br />