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eurofins <br />Air Toxics <br />LABORATORY NARRATIVE <br />EPA Method TO -15 <br />Horizon Environmental Inc. <br />Workorder# 1212225 <br />One PAC250 Canister sample was received on December 12, 2012. The laboratory performed analysis via <br />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 />Reeeiving Notes <br />There were no receiving discrepancies. <br />Analytical Notes <br />The reported CCV for each daily batch may be derived from more than one analytical file due to the <br />client's request for non-standard compounds. <br />Non-standard compounds may have different acceptance criteria than the standard TO-14A/TO-15 <br />compound list as per contract or verbal agreement. <br />A single point calibration for TPH referenced to Gasoline was performed for each daily analytical batch. <br />Recovery is reported as 100% in the associated results for each CCV. <br />Definition of Data Oualifying 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 9 <br />