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OWGDAir Testing Inc. www. gdair.com <br /> CLIENT Paul Anderson GD Air Testing Lab ID GD05-00265-003 <br /> Philip Environmental Report Date 07/20/05 <br /> 210 West Sand Bank Road Date Analyzed 07/20/05 <br /> Analyzed by LAS' Columbia, [L 62236 Anal Y <br /> GD Air QC Batch QC-072005BTX <br /> Project No 0234841517 Method EPAT014 <br /> REPORT OF ANALYTICAL RESULTS Page 1 of 1 <br /> SAMPLE DESCRIPTION MATRIX SAMPLE BY SAMPLED DATE/RECEIVED <br /> GAC-2 Air Sal Mendoza 07/18/05 07/20/05 <br /> CONSTITUENT MW CAS PQL* RESULT NOTE <br /> ppmv ppmv mg/cu M <br /> VOLATILE ORGANICS BY EPA TO-14 <br /> Benzene 780 71432 0 004 ND ND <br /> Ethylbenzene 106 100411 0 004 ND ND <br /> Toluene 920 108883 0 004 0 011 0 041 <br /> m&p-Xylenes 106 1330207 0 004 0 004 0 019 <br /> o-Xylene 106 95476 0 004 ND ND <br /> TPH as Gasoline 86 0 0 010 117 412 <br /> Surrogate Recovery Report Spiked Found R% <br /> ppbv ppbv <br /> 1,4-Difluorobenzene (SS1) 1181 540363 500 511 102 <br /> Sromofluorobenzene (SS2) 175 460004 500 472 944 <br /> `Comparison with the method blank this sample run with a dilution factor of 200 <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, c <br /> 1 / ei <br /> George Dai, P <br /> Laboratory Director <br /> Data File gd5973 i1072005 6/07200508 D <br /> Report File GD SRIID \Rpt02-TO14\GD05-00265-003 <br /> 903 N Bowser Rd , Suite 200, Richardson, CX 75081, USA Tel (972) 480-8908 . Fax (972) 480-8308 <br />