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LABORATORY NARRATIVE <br /> Mod.Method TO-14A <br /> Condor Earth Technologies <br /> Workorder#0507246 <br /> MTwo 6 Liter Summa Canister samples were received on July 12, 2005 The laboratory performed the <br /> analysis via Modified Method TO-14A using GUMS in the full scan mode The method involves direct <br /> 1 injection of up to a 40 mL sample aliquot into a vapor management system Following dehumidification the <br /> sample passes directly into the GUMS for analysis See the data sheets for the reporting ltnuts of each <br /> compound <br /> Requirement TO-14AITO-15 ATL Modifications <br /> Concentration of IS Spike 10 ppbv(TOA 5) 500 ppbv <br />' BFB Acceptance Criteria CLP protocol(TO-15) SW-846 protocol <br /> Sampling Drying System Naflon Dryer(TO-t4A) Multisorbent concentrator <br /> Blank acceptance criteria <0 2 ppbv(TO-14A) <RL <br /> IS Recovery TO-15 Within 40%of Within 40%of CCV recovery for blank and samples <br /> mean over ICAL for <br />' blanks,and Win 40% <br /> of daily CCV for <br /> samples <br />' Sample volume Up to 400 mL(TO-14A) tip to 40 mLs <br /> Initial Calibration +-30%RSD(TO-14A) </=30%RSD with 2 compounds allowed out to<40% <br /> Primary Ions for Quantification Freon 114 85,Carbon Freon 114 135,Carbon Tetrachloride 119, <br /> Tetrachloride 117, Trichloroethene 95,Ethyl Benzene,m,p-and o-Xylene <br /> Trichloroethene 130, 106 <br /> Ethyl Benzene,m,p- <br />' and o-Xylene 91 <br /> Daily CCV +-30%D </=30%D with 2 allowed out up to 40%,flag associated <br /> sample results <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 />' BFB Tune Absolute Abundance Within 10%of that CCV Internal Standard area counts are compared to the <br /> Criteria from the previous day ICAL,corrective action for>40%D <br /> (TO-14A) <br /> Dilutions for Initial Calibration Dynamic dilutions or Syringe dilutions,bag dilutions <br /> static using canisters <br /> Receiving Notes <br /> There were no receiving discrepancies <br /> Analytical Notes - <br /> There were no analytical discrepancies <br /> 1 <br /> Page 2 of 9 <br />