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eurofins <br /> Air Toxics <br /> LABORATORY NARRATIVE <br /> EPA Method TO-15 <br /> SCS Field Services <br /> Workorder# 1309169 <br /> Ten 1 Liter Summa Canister samples were received on September 11, 2013. 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 Guidelines' as <br /> generally applied to the analysis of volatile organic compounds in air. A rules-based, logic driven, independent <br /> validation engine was employed to assess completeness, evaluate pass/fail of relevant project quality control <br /> requirements and verification of all quantified amounts. <br /> Receiving Notes <br /> There were no receiving discrepancies. <br /> Analytical Notes <br /> All Quality Control Limit exceedances and affected sample results are noted by flags.Each flag is defined at the <br /> bottom of this Case Narrative and on each Sample Result Summary page. Target compound non-detects in the <br /> samples that are associated with high bias in QC analyses have not been flagged. <br /> Dilution was performed on samples SG 10 and SG 1 due to the presence of high level target species. <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,LOD,or MDL value. See data <br /> page for project specific U-flag definition. <br /> UJ-Non-detected compound associated with low bias in the CCV <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 42 <br />