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GD Air Testing Inc. www, gdair.com <br /> CLIENT GD Air Testing, Inc GD Air Testing Lab 1D GD05-91214-001 <br /> Report Date 12/14105 <br /> I Date Analyzed 12/14/05 <br /> Analyzed by LAJ <br /> GD Air QC Batch QC-121405BTX <br /> Project No Method EPAT014 <br /> REPORT OF METHOD BLANK RESULTS Page 1 of 1 <br /> SAMPLE DESCRIPTION MATRIX SAMPLE BY SAMPLED DATE /RECEIVED <br /> BLK Air LAJ 12/14105 12/14/05 <br /> 1 CONSTITUENT MW CAS PQL• RESULT NOTE <br /> ppmv ppmv mg/cu M <br /> VOLATILE ORGANICS BY EPA TO-14 <br /> ' Benzene 780 71432 00002 ND NO <br /> Ethylbenzene 106 100411 00002 ND NO <br /> Toluene 920 108883 00002 ND NO <br /> m&p-Xylenes 106 1330207 00002 ND ND <br /> o-Xylene 106 95476 00002 ND ND <br /> WPH as Gasoline 860 00005 ND ND <br /> Surrogate Recovery Report Spiked Found R% <br /> ppbv ppbv <br /> 1,4-Difluorobenzene (SS1) 1181 540363 500 508 101 6 <br /> Bromofluorobenzene (SS2) 175 460004 500 5 50 110 <br /> 'Comparison with the method blank this sample run with a dilution factor of 1 0 <br /> NA <br /> 'RESULTS Listed as 'ND' were not detected at or above the listed PQL (Practical Quantitation Limit) <br /> The control limit for Surrogate Recovery % of all spiked compound is 70%-130% Only one is required to pass <br /> 'Concentrations in ug/cu M reported at 760 mm Hg pressure and 298 deg K <br /> 'QA/QC reports followed this report include Method blank, Blank spike (BS) and Blank spike duplicate (BSD) <br /> Respectfully submitted <br /> GD Air Testing, Inc , <br /> /4 -6y- ':�r <br /> George Dai, Ph D <br /> Laboratory Director <br /> ata File gd5973 i1121405 B112140504 D <br /> 1 eport File GD SRIID 1Rpt02-TO14\GD05-91214-001 <br /> �03 N Bowser Rd , Suite 200, Richardson, TX 75081, USA 7'el (972) 480-8908 . Fax (972) 480-8308 <br />