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LABORATORY NARRATIVE <br /> Modified TO-14A GC/MS/F1D <br /> Condor Earth Technologies <br /> Workorder#0505074 <br /> Two 6 Liter Summa Canister samples were received on May 04, 2005 The laboratory performed the <br /> analysis via Modified Method TO-14A using GC/MS/FID The method involves direct infection of a sample <br /> aliquot into a vapor management system The sample passes directly into the GC/MS/FID for analysts <br /> following dehumidification- The TFH results are calculated using a response factor derived from Gasoline A <br /> molecular weight of 100 is used to convert the TPH ppbv result to ug/rn3 See the data sheets for reporting <br /> limits <br /> Requirement TO-I4AITO-15 ATL Modifications <br /> Sample Drying System Nafion Drier Multisorbent <br /> Sample Load Volume 400 mL Up to 200 mL <br /> Blank Acceptance Criteria <0 2 ppbv <RL <br /> Dilutions for Initial Calibration Dynamic dilutions or Syringe dilutions,fixed volume sampling loop,metered <br /> static using canisters volume <br /> Sample Collection Media Summa Canister ATL recommends use of Summa canisters to insure data <br /> defensibility,but will report results from Tedlar bags at <br /> client request <br /> . RT Window Study(FID Only) Mean+-3 X STD 0 08 min (Mean+/-3 X STD<0 08 min) <br /> within 72 hrs <br /> Receiving Notes <br /> There were no receiving discrepancies <br /> Analytical Notes <br /> There were no analytical discrepancies <br /> Definition of Data QuahfyinI4 FlajZs <br /> Seven qualifiers may have been used on the data analysis sheets and indicates as follows <br /> B - Compound present in laboratory blank greater than reporting hirut (background subtraction no <br /> performed) <br /> J- Estimated value <br /> E- Exceeds instrument calibration range <br /> S - Saturated peak <br /> Q - Exceeds quality cuntrul litints <br /> U- Compound analyzed for but not detected above the reporting limit <br /> UJ- Non-detected compound associated with low bias in the CCV <br /> File extensions may have been used on the data analysts sheets and indicates <br /> as follows <br /> a-File was requantified <br /> b-File was quantified by a second column and detector <br /> Page 2 of 9 <br />