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r r, <br /> 29 May 2002 <br /> AGE-NC Project No. 02-0925 <br /> Page 3 of 4 <br /> ANALYTICAL METHODS <br /> The collected soil and ground water samples were transported under chain-of-custody to Cal Tech <br /> Environmental Laboratories (CTEL), a California Department of Health Services-certified <br /> laboratory, for analysis for: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015M; and <br /> • Volatile aromatic compounds - benzene, toluene, ethyl benzene and xylene (BTEX) with <br /> methyl tertiary-butyl ether(MTBE) - in accordance with Method SW846 8021. <br /> FINDINGS <br /> Field observations did not detect the presence of volatile organic compounds (utilizing the OVM) <br /> or petroleum hydrocarbons-like odor in the soil and grab ground water samples collected. <br /> A total of three soil samples and three grab ground water samples were submitted to CTEL for <br /> analysis as noted above. No target analytes were detected in the analyzed soil and ground water <br /> samples. The analytical results are summarized in Table 1. A copy of the laboratory report (CTEL <br /> Laboratory IDs 0205-125-5,0205-125-10,0205-125-15 and 0205-125-17 through 0205-125-19)is <br /> included in Appendix A. <br /> RECOMMENDATIONS <br /> Based upon non-detectable concentrations of contaminants in soil samples, and non-detectable <br /> concentrations of contaminants in inferred down-gradient ground water samples,AGE recommends <br /> that no further action be taken at the site. <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 <br /> geologic/hydrogeologic conditions at the site for the purpose of this investigation was made from <br /> a limited number of available data points (i.e. soil and ground water samples) and subsurface <br /> conditions may vary away from these data points.No other warranty,expressed or implied,is made <br /> as to the professional interpetations, opinions and recommendations contained in this report. <br /> Advanced GeoEnviron mental,Inc. <br />