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{ <br /> i <br /> LABORATORY NARRATIVE <br /> Modified TO-3 <br /> Geological Technics <br /> Workorder#0212217 <br /> Two l Liter Tedlar.Bag samples were received on. December 11, 2002. The laboratory performed analysis via <br /> modified EPA Method TO-3 for Methyl tert-Butyl Ether (MTBE), Benzene; Toluene, Ethylbenzene, Xylenes <br /> and Total Petroleum Hydrocarbons (TPH). MTBE/BTEX was analyzed via GC/PID and TPH via GC/FID. The <br /> TPH results are calculated using the response of Gasoline. A molecular weight of 100 is used to convert the <br /> TPH ppmy result to ug/L. The method involves concentrating up to 200 mL of sample. The concentrated aliquot <br /> is then.dry purged to remove water vapor prior to entering the chromatographic.system. See the data sheets for <br /> the reporting]units for each compound. <br /> Receiving Notes <br /> There were no.receiving discrepancies. <br /> Analytical Notes <br /> There were no analytical discrepancies. <br /> Definition of Data Oualifying Flaes <br /> Seven qualifiers may have been used on the data analysis sheets and indicate as follows: <br /> B- Compound present in laboratory blankgreater than reporting.limit. <br /> J- Estimated value. <br /> E- Exceeds instrument calibration range. <br /> S - Satur&ed peak. <br /> Q- Exceeds quality control limits: <br /> U - Compound analyzedfor but not detected above the detection limit. <br /> M.- Reported value may be biased due to apparent matrix interferences. <br /> :i <br /> File extensions may have been used on the data analysis sheets and indicates <br /> as follows: . <br /> a-File was requantified <br /> b-File was quantified by a second column and detector <br /> rl-File was requantified for the purpose of reissue <br /> Page 2 of 6 <br />