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23 April 2003 <br />AGE -NC Project No. 03-1024 <br />Page 2 of 3 <br />custody to Cal Tech Environmental Laboratory a State of California Department of Health Services <br />(DHS) -certified laboratory. All samples were analyzed for: <br />• Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br />Method 5030/8105M; <br />• Total petroleum hydrocarbons quantified as diesel (TPH-d) in accordance with EPA Method <br />8015 -modified; <br />• Benzene, toluene, ethylbenzene and total xylenes (BTE&X) and methyl tertiary -butyl ether <br />(MTBE) in accordance with EPA Method 8021; and <br />• Fuel additives including MTBE, di -isopropyl ether (DIPE), ethyl tertiary -butyl ether (ETBE), <br />tertiary -amyl methyl ether (TAME), tertiary butanol (TBA) in accordance with EPA Method <br />8260B. <br />ANALYTICAL RESULTS OF SOIL SAMPLES <br />None of the target analytes were detected at or above laboratory reporting limits in the samples <br />analyzed. <br />The laboratory report (CTEL Project No. CT214-0304096), QA/QC report and chain -of -custody <br />form are enclosed. <br />J �W <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. Evaluations of the <br />geologic/hydrogeologic conditions at the site for the purpose of this investigation are made from a <br />limited number of available data points (i.e. soil samples), and subsurface conditions may vary away <br />from these data points. No other warranty, expressed or implied, is made as to the professional <br />recommendations contained in this report. <br />Advanced GeoEnvironmental, Inc. <br />