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- <br /> t i'x ti+'x+-'�m _.4 4 - ,e`--• -C. �- - ir'v Y. „fTII <br /> r� <br /> TECH/ART Repon: 1/21/80 to PRATT CONSUI.Titia COMPANY <br /> r-, Page 2 of 2 pages <br /> Calibrations were performed using the Scott calibration gas, which contained methane, ethane, propane, <br /> butane,pentane, hexane,and heptane at concentrations of approximately 15 ppm each In dry nitrogen. <br /> Scott gas Is furnished with an exact analysis certified to t 296,) Calibration runs were performed at Irregular <br /> Intervals four times during the day. <br /> j Checks of the pre-cleaned and other sa,Mple bottles were performed by heating randomly-chosen em <br /> i bottles In a water bath to more than 50 Celsius and analyzing a sample of gas withdrawn from the bottle. PtY <br /> i <br /> Occasional check runs were performed with samples of diesel, leaded <br /> gasoline headspace vapor to ensure that Instrumental response was adequate and approprtatee Additional check nd unleaded runs <br /> were made with samples of benzene, toluene,and m-xylene headspace vapor to confirm that retention time <br /> drift had not exceeded narrawly{teflned allowed limits. A facto <br /> consistency of carrier gas rate-of-flow. Duplicate analyses were performed o 10 offlowmetthe samplers to ensure <br /> another quality contra check. provide <br /> Ali quality control check results were satisfactory. <br /> I PROCEDURE <br /> Samples were collected In the field using 40 ml glass vials(i.e.,'VOA"Vials w' <br /> were heated In a water bath to at least 40 Celsius. A sample of headspace gas rtwas infected into the P oto h Teflon top Septa). The vials <br /> and the analysis performed. ©uplicate analyses were performed to ch vac <br /> III check consistency of the chromatograms, , <br /> 1 i <br /> RESULTS <br /> AiJJPL -1Q N <br /> Al <br /> Clean <br /> Clean <br /> Clean <br /> Under regulatory limit of 100 <br /> PPM for gasoline or diesel fuel <br /> I Primarily diesel but some gasoline; <br /> AS estimated at several hundred ppm <br /> No contamination'We'No horn 01, <br /> -- -_- - -- - -- - <br /> r 81 Very heavy contamination;estimated at a 500 ppm I <br /> s B2 Clean <br /> I <br /> Clean i <br /> a.v `:.� Clean 1 <br /> 04 <br /> Clean <br /> b` The Chromatograms are attached as an appendix <br /> F <br /> � 2 <br /> i <br />