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05 March 2012 <br /> AGE-NC Project No. 11-2049 <br /> Page 3 of 4 <br /> constituents: <br /> • Total petroleum hydrocarbons quantified as gasoline and diesel(TPH-g and TPH-d) <br /> in accordance with EPA-method 8015-modified; and <br /> • Volatile organic compounds (VOCs) in accordance with EPA-method 82608. <br /> 2.4. EQUIPMENT DECONTAMINATION <br /> Prior to sample collection, Geoprobe soil sampling equipment was thoroughly rinsed with <br /> clean water after being washed with a solution of Alconox. Geoprobe rods were thoroughly <br /> cleaned prior to soil probe boring advancement. <br /> 2.5. BORING ABANDONMENT <br /> Following soil and ground water sample collection, each boring was permanently sealed <br /> to prevent vertical migration of potential contaminants. Soil borings were abandoned by <br /> backfilling with portland cement from the total depth to surface grade. <br /> 3.0. FINDINGS <br /> Hydrocarbon odors were not observed in the soil sample collected from boring SB1 <br /> through SB7. Utilizing the OVM, organic vapors were detected in soil samples collected at <br /> 5 feet and 10 feet bsg at very low concentrations ranging between 0.1 parts per million <br /> volume (ppmv) and 0.4 ppmv. Boring logs are included in Appendix A. <br /> A total of five soil samples collected from borings SB1, SB4, SB6, and SB7 were analyzed <br /> for TPH-g, TPH-d, and VOC's; a total of two soil samples collected from SB2 and SB3 <br /> were analyzed for TPH-d only. No chemical constituents were detected above laboratory <br /> reporting limits in the soil samples analyzed. <br /> A total of four grab ground water samples collected from borings SB4 through SB7 were <br /> analyzed for TPH-g, TPH-d, and VOC's. TPH and VOCs were not detected above <br /> laboratory reporting limits in the ground water samples analyzed. <br /> No additional analytes were reported above laboratory detection limits in the soil and <br /> ground water samples analyzed. Analytical results of the soil and ground water samples <br /> are summarized in Tables 1 and 2, respectively. The laboratory report (CTEL Project No. <br /> CT214-1202162), quality assurance and quality control (QA/QC) reports, and chain of <br /> Advanced GeoEnvironmental,Inc. <br />