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26 February 1996 <br /> AGE-NC Project No. 95-0167 <br /> Page 2 of 3 <br /> (MAI) under chain-of-custody procedures. <br /> One grab ground water sample was collected from probing P1 using a Geoprobe water sampling <br /> assembly. The sample was collected in 40-m! VOA vials, placed in a chilled container and transported <br /> under chain-of-custody procedure to MAI. <br /> Soil and ground water samples were analyzed for total petroleum hydrocarbons quantified as gasoline <br /> (TPH-g) and volatile aromatics (benzene, toluene, ethyl benzene and total xylenes; BTE&X) in <br /> accordance with EPA methods 5030/8015m and 8020/602, respectively. <br /> FINDINGS <br /> TPH-g was detected in soil samples from probings P2 and P3 at concentrations up to 230 mg/kg <br /> (ppm; P3-10'). BTE&X were detected in soil samples collected from probings P2 and P3 at <br /> concentrations ranging from 0.010 (ethyl benzene, P3-25)to 19 ppm (xylene, P3-10'). No petroleum <br /> hydrocarbons were detected in samples from probing P I. <br /> Benzene, toluene and xylenes were detected in the grab ground water sample from probing P1 at <br /> w concentrations of 1.3, 4.8, and 2.6 ,ug/l (parts per billions: ppb), respectively. Analytical results of <br /> the soil and grab ground water samples are summarized in Table 1. The laboratory report (MAI <br /> Laboratory I.D. 56586 through 56598) and chain-of-custody are attached. <br /> CONCLUSIONS <br /> Based upon the analytical results of soil samples collected during the preliminary investigation, <br /> petroleum hydrocarbon-impacted soil at the site appears to be limited to the immediate area of the <br /> former UST. Analytical results of the grab sample collected from probing P I indicates that ground <br /> water at the site may be 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 upon <br /> analytical results provided by an independent laboratory. Evaluations of the geologic/hydrogeologic <br /> conditions at the site for the purpose of this investigation are made from a limited number of available <br /> data points(i.e. soil samples), and subsurface conditions may vary away frorn these data points. No <br /> other warranty, expressed or implied, is made as to the professional recommendations contained in <br /> this report. <br />