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T 7�� ;l <br /> r: PRECIS1O V <br /> E Y Y IRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Friday,April 4, 2008 <br /> Attention: Guy W.Roy <br /> R &L Diesel Report Page 38 of 41 <br /> P.O.Box 2498 <br /> Danville, CA 94626 <br /> Volatile Organic Compounds by EPA Method 8260B-Quality Control <br /> IL <br /> Precision Enviro!Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units level Result %RFC Limits RPD Limit Notes <br /> Batch AC81102-Volatiles <br /> Blank(AC81102-BLKI) Prepared&Analyzed: 11-Mar-08 <br /> m,p-Xylene ND 2,00 uglkg <br /> Ethyl tert-Butyl Ether(ETBE) ND 2.00 " <br /> o-Xylene ND 2.00 " <br /> tert-Amyl Methyl Ether(TAME) ND 2.00 <br /> tert-Butyl Acohol(TBA) ND 50.0 " <br /> Diisopropyl Ether(DIPE) ND 2.00 " <br /> Surrogate:Dibromofluoromethane 44.0 50.0 88 86-118 <br /> Surrogate:Toluene-d8 48.0 50.0 96 8$-110 <br /> Surrogate:4-Bromofluorobenzene 50.0 50.1 100 86-115 <br /> Matrix Spike(AC81102-MSI) Pre ared: 11-Mar-08 Analyzed: 12-Mar-08 QM-07 <br /> Benzene 13.8 2.00 ug/kg 20.0 69 60-124 <br /> Chlorobenzene 7.67 2.00 20.0 38 60-117 <br /> 1,1-Dichloroethene 12.9 2.00 20.0 64 70-133 <br /> Toluene 9.70 2.00 20.0 48 65-122 <br /> Trichloroethene 9.56 2.00 " 20.4 48 65-117 <br /> Surrogate:Dibromofluoromethane 56.8 .50.0 114 86-118 <br /> Surrogate: Toluene-d8 43.2 50 .0 86 88-110 <br /> Surrogate:4-Bromofluorobenzene 51.6 50.1 103 86-115 <br /> Matrix Spike Dup(ACS 1102-MSD1) Prepared: 1 i-Mar-08 Analyzed: 12-Mar-08 QM-07 <br /> Benzene 5.41 2.00 uglkg 20.0 27 60-124 15 <br /> Chlorobenzene 2.31 2.00 20.0 12 60-117 15 <br /> l,l-Dichloroethene 4.91 2.00 20.0 25 70-133 15 <br /> Toluene 4.85 2.00 20.0 24 65-122 15 <br /> Trichloroethene 2.97 2.00 20.0 15 65-117 15 <br /> i <br /> Surrogate:Dibromofluoromethane 59.0 50.0 118 86-118 <br /> Surrogate: Toluene-d8 45.0 50.0 90 88-110 <br /> Surrogate.4-Bromofluorobenzene 53.9 50.1 108 86-115 <br /> mp'L=milligrams per Liter-ppm DLR-Detection Limit for Purpose of Reporting. <br /> ug/L=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limit. <br /> RESPECTFULLY SUBMITTED, <br /> .Jonathan Le,Laboratory Director <br /> 3935 N. Coronado Ave Stockton CA. 95204 Phone: (209) 477-8105 .Fax: (209) 546-7497 <br />