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LABORATORY NARRATIVE <br /> ATL GC Application#32 <br /> Pruna Environmental <br /> Workorder# 0412363 <br /> Ten Bottle samples were received on December 16, 2004 The laboratory performed analysis of Methane via <br /> tGC application #32 using GC/FID The method involves transferring 5 mL of sample headspace into a <br /> headspace vial The vial is then placed into HP7694 Headspace Autosampler equipped with oven, shaker and i <br />' rrL sample loop Sample is incubated and then equilibrated at 40°C for 15 minutes with high agitation Finally,a <br /> direct infection of the headspace is performed See the data sheets for the reporting limits for each compound <br />' Receiving Notes <br /> A Temperature Blank was not included with the shipment, Temperature was measured on a representative <br /> sample and was not within 4t2 'C Coolant in the form of ice/blue ice was not present The discrepancy was <br />' noted in the Sample Receipt Confirmation emaillfax and the analysis proceeded <br /> ' Analytical Notes <br /> The analysis is qualitative in nature because the analytical system was calibrated using gaseous standards that <br /> ' undergo the partitioning process in aqueous matrix <br /> Defimbon of Data_Quafifting Flaks <br /> Seven qualifiers may have been used on the data analysis sheets and indicate as follows <br /> B- Compound present in laboratory blank greater than reporting limit <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 detection limit <br /> M- Reported value may be biased due to apparent matrix interferences <br /> ' File extensions may have been used on the data analysis sheets and indicates <br /> as follows <br /> a-File was requaiitified <br /> b-File was quantified by a second column and detector <br /> rl-File was requantified for the purpose of reissue <br /> 1 <br /> ' Page 2 of 15 <br />