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I ' LABORATORY NARRATIVE . Mod. Method TO-14A Condor Earth Technologies Workorder#0510309 ' Two 6 Literumma S Canister samples were received on October 17, 2005 The laboratory performed the ' analysts via Modified Method TO-14A using GUMS in the full scan mode The method involves direct infection of up to a 40 mL sample aliquot into a vapor management system Following dehumidification the sample passes directly into the GUMS for analysis See the data sheets for the reporting limits of each ' compound Requirement TO-14AITO-15 ATL Hodifications Concentration of IS Spike 10 ppbv(TO-15) 500 ppbv ' BFB Acceptance Cntena CLP protocol(TO-15) SW-846 protocol Sampling Drying System Nafion Dryer(TO-14A) Multisorbent concentrator Blank acceptance Cntena <0 2 ppbv(TO-14A) <RL IS Recovery TO-15 Within 40%of Within 40%of CCV recovery for blank and samples mean over ICAL for blanks,and whn 40% of daily CCV for samples • Sample volume Up to 400 mL(TO-14A) Up to 40 mLs Initial Calibration +-30%RSD(TO-14A) </—30%RSD with 2 compounds allowed out to<40% Primary Ions for Quantification Freon 114 85,Carbon Freon 114 135,Carbon Tetrachlonde 119, Tetrachloride 117, Trichloroethene 95,Ethyl Benzene,m,p-and o-Xylene Trichloroethene 130, 106 Ethyl Benzene,m,p- and o-Xylene 91 Daily CCV +-30%D </=30%D with 2 allowed out up to 40%,flag associated sample results Sample collection media Summa canister ATL recommends use of summa canisters to insure data defensibility,but will report results from Tedlar bags at client request BFB Tune Absolute Abundance Within 100%of that CCV Internal Standard area counts are compared to the Cntena from the previous day ICAL,corrective action for>40%D (TO-14A) Dilutions for Initial Calibration Dynamic dilutions or Syringe dilutions,bag dilutions static using canisters Receiving Notes There were no receiving discrepancies Analytical Notes • There were no analytical discrepancies Page 2 of 9