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eurof ins <br /> Air -roxics <br /> LABORATORY NARRATIVE <br /> EPA Method T -15 <br /> SCS Field Services <br /> Workorder# 1204234 <br /> Four 1 Liter Summa Canister samples were received on April 12, 2012. The laboratory performed analysis <br /> via EPA Method TO-15 using GUMS in the full scan mode. <br /> This workorder was independently validated prior to submittal using 'USEPA National Functional <br /> Guidelines' as generally applied to the analysis of volatile organic compounds in air. A rules-based, logic <br /> driven, independent validation engine was employed to assess completeness, evaluate pass/fail of relevant <br /> project quality control requirements and verification of all quantified amounts. <br /> Receiving Notes <br /> There were no receiving discrepancies. <br /> Analytical Notes <br /> Dilution was performed on samples MP IOD, TP EAST HEADER, and TP WEST HEADER H, 1-6 due <br /> to the presence of high level target species. <br /> All Quality Control Limit exceedances and affected sample results are noted by flags. Each flag is defined <br /> at the bottom of this Case Narrative and on each Sample Result Summary page. <br /> Definition of Data Qualifying Flags <br /> Eight qualifiers may have been used on the data analysis sheets and indicates as follows: <br /> B - Compound present in laboratory blank greater than reporting limit(background subtraction not <br /> performed). <br /> J- Estimated value. <br /> E -Exceeds instrument calibration range. <br /> S - Saturated peak. <br /> Q -Exceeds quality control limits. <br /> U - Compound analyzed for but not detected above the reporting limit. <br /> UJ-Non-detected compound associated with low bias in the CCV and/or LCS. <br /> N - The identification is based on presumptive evidence. <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 3 of 22 <br />