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tiff eurofins i • <br /> Air Toxics <br /> LABORATORY NARRATIVE <br /> EPA Method TO-15 <br /> Brusca Associates, Inc. <br /> Workorder# 1801408A <br /> Two 1 Liter Summa. Canister samples were received on January 26, 2018. The laboratory performed analysis <br /> via.EPA Method TO-15 using GC/MS 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 /> There were no analytical discrepancies. <br /> Definition of Data Qualifying Flags <br /> Ten 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 /> M- Reported value may be biased due to apparent matrix interferences. <br /> CN - See Case Narrative. <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 16 <br />