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fZxcelclhem <br />' Environmental Labs <br /> 4946 Watt Avenue, 038F'�R <br /> North Highlands, CA 95660 <br /> (916)334-$$661 <br /> _ OA/OC REPORT _ <br />' Attention Mr Dave Diem BTEX Analyzed 7-27-94 <br /> GEOCON <br />' 11333 Sunco Drive, Suite 100 <br /> Rancho Cordova, Ca 95742 <br /> Project • 58080-06-01C <br /> Matrix Soil <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes <br /> PPM PPM PPM PPM <br /> Reporting Limit 0 005 0.005 0 005 0 005 <br /> QA/QC PARAMETER <br />' <br /> Matrix Blank ND ND ND ND <br /> PERCENT RECOVERIES <br /> Matrix Spike 72% 77% 79% 79% <br />' Matrix Spike 83% 87% 90% 91% <br /> Duplicate <br />' Laboratory Control 1(X)% 98% 99% 97% <br /> Spike <br />' Laboratory Control 103% 101% 101% 100% <br /> Spike Duplicate <br />' ppm = parts per million = mg/Kg = milligram per kilogram <br /> ND = Not defected Compound(s)may be present at concentrations below the reporting limit <br /> All surro pie rccumrxs were wrthin 3096 of target values <br /> Spikes&Spike Duplreates were each spiked with 250 ng Er1I3 C standard. <br />' ANA1 IMCAL PROC'FIDURI?S <br /> MIEX—Benzene,toluene,ethylbenzenc,and total xylene isomers(BTEX)are measured by extraction using EPA Method 5030 followed <br /> by analysis using EPA Method 8020 which utilizes a gas chromatograph(GC)equipped with a pholoionization detector(PID) <br /> 7-27-94 <br /> qtbo atony R resentative Date Reported <br /> EXCELCHEM ENVIRONMENTAL LABS IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT Of IIEAI Ili SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br />' (Certification No 1760) <br />