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LABORATORY NARRATIVE <br /> Analysis of BTEX/TPH by Modified EPA Method TO-3 <br />' Environmental Audits <br /> Work Order # 9912400A <br /> 1 Two IL SummaTM Canister samples were received on December 23, 1999 The laboratory performed <br /> analysis via modified EPA Method TO-3 for Benzene, Toluene, Ethylbenzene, Xylenes and Total <br /> Petroleum Hydrocarbons (TPH) BTEX was analyzed via GC/PID and TPH via GC/FID The TPH <br /> results are calculated using the response of Gasoline The method involves concentrating up to 200 mL <br /> of sample The concentrated aliquot is then flash heated and swept through a hydrophobic drier to <br /> remove water vapor prior to entering the chromatographic system See the data sheets for the reporting <br /> limits for each compound <br />' There were no out of the ordinary circumstances to report <br /> Six qualifiers may have been used on the data analysis sheets and indicate as follows <br /> B - Compound present in laboratory blank greater than reporting limit <br /> J - Estimated value <br /> E - Exceeds instrument calibration range <br />' S - Saturated Peak <br /> Q - Exceeds quality control limits <br /> M- Reported value may be biased due to apparent matrix interferences <br />