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r <br /> c� <br /> 62 July 2002 <br /> AGE-NC Project No 02-0913 <br /> Page 3 of 4 <br /> FINDINGS <br /> TPH-g was detected in soil samples P4-10 and P4-15 at concentrations of 1,400 milligrams per <br /> 'kilogram (mg/kg) and 2,400 mg/kg, respectively Ethylbenzene and xylenes were detected in the <br /> same two samples at concentrations as high as 45 mg/kg and 110 mg/kg, respectively Benzene, <br /> toluene and fuel additives were not detected in the two analyzed soil samples from boring P-4 <br /> No target analytes were detected in the analyzed soil samples collected from probe borings P-1,P-2, <br /> P-3, P-5 and P-6 A copy of the laboratory report (CTEL Laboratory IDs 0205-141-2, 0205-141-7, <br /> 0205-141-11, 0205-141-13, 0205-141-14, 0205-141-16 and 0205-141-18) is included ' in <br /> Appendix A <br /> DISCUSSION <br /> The detected concentrations of TPH-g and BTEX constituents indicate that a release of petroleum <br /> hydrocarbons occurred at the site TPH-g and BTEX constituents increased with depth, indicating <br /> that the original release has migrated vertically to a depth of at least 15 feet bsg <br /> The lateral extent of petroleum-imp acted soil appears to be limited,impacted soil was only detected <br /> in soil samples collected from boring P-4, located near the former dispenser island <br /> RECOMMENDATIONS <br /> AGE recommends preparation of a work plan to delineate the vertical extent of hydrocarbon- <br /> impacted soil and to determine if ground water has been impacted <br /> LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily exercised by <br /> environmental consultants practicing in this or similar localities The findings were based mainly <br /> upon analytical results provided by an independent laboratory Evaluation of the geologic conditions <br /> at the site for the purpose of this investigation was made from a limited number of available data <br /> points(i a soil samples)and subsurface conditions may vary away from these data points No other <br /> warranty, expressed or implied, is made as to the professional interpretations, opinions and <br /> recommendations contained in this report <br /> Advanced GeoEnvironmental,Inc <br />