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LABORATORY NARRATIVE <br /> Modified TO-14A GC/MS/FID <br /> Condor Earth Technologies <br /> Rrorkorder# 0410170 <br /> Two 6 Liter Summa Canister samples were received on October 08, 2004. The laboratory performed the <br /> analysis via Modified Method TO- 14A using GC/MS/FID. The method involves direct injection of a sample <br /> aliquot into a vapor management system. The sample passes directly into the GC/MS/FID for analysis . <br /> following dehumidification. The TPH 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 ugbiI See the data sheets for reporting <br /> limits. <br /> Requirement T044A/T0-15 ITL Modifications <br /> Sample Drying System Nation Drier Multisorbent <br /> Sample Load Volume 400 mL Up to 100 mL. - <br /> - - Blank Acceptance Criteria < 0.2ppbv, < 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 his. <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 /> 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 limit (background subtraction no <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. <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 /> r1 "File was requantified for the purpose of reissue <br /> Page 2 of 10 <br />