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PRECISION 0 <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Friday,April 22, 2005 <br /> Attention. Rich Ryan <br /> Neil O.Anderson&Associate Report Page 14 of 17 <br /> 902 Industrial Way <br /> Lodi,CA 95240 <br /> Volatile Organic Compounds by EPA Method 8260E-Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AD52126-Volatiles <br /> Blank(AD52126-BLKl) Prepared&Analyzed:21-Apr-05 <br /> Acetone ND 100 uglkg <br /> ten-Butyl Acohol(TBA) ND 50.0 <br /> Methyl tert-butyl Ether(MISE) ND 5.00 " <br /> Diisopropyl Ether(DIPS) ND 5,00 " <br /> Ethyl tert-Butyl Ether(ETBE) ND 5.00 " <br /> tort-Amyl Methyl Ether(TAME) ND 5.00 <br /> Benzene ND 5.00 <br /> Ethylbenzene ND 5.00 " <br /> Toluene ND 5.00 " <br /> m,p-Xylene ND 5.00 „ <br /> o-Xylene ND 5.00 " <br /> LCS(AD52126-BSI) Prepared&Analyzed:21-Apr-05 <br /> tert•Butyl Acohol(TBA) 93.0 50.0 ug/kg 100 93 75-125 <br /> Methyl tart-butyl Ether(MtBE) 40.2 5.00 40.0 I00 75-125 <br /> Diisopropyl Ether(DIPE) 20.5 5.00 20.0 102 75-125 <br /> Ethyl Cert-Butyl Ether(ETBE) 19.8 5.00 20.0 99 75-125 <br /> tent-Amyl Methyl Ether(TAME) 19.6 5.00 20.0 98 75-125 <br /> Benzene 20.6 5.00 20.0 103 75-125 <br /> Ethylbenzene 21.0 5.00 20.0 105 75-t25 <br /> Toluene 21.7 5.00 20.0 108 75-125 <br /> m,p-Xylenc 42.3 5.00 40.0 106 75-125 <br /> o-Xy1ene 21.0 5.00 20.0 105 75-125 <br /> Matrix Spike(AD52126-MSI) Source:5042114-01 Prepared:21-Apr-05 Analyzed:22-Apr-05 <br /> tert-Butyl Acohol(TBA) 97.7 50.0 ug/kg 100 0.00 98 75-125 <br /> Methyl tett-butyl Ether(MtBE) 36.2 5.00 40.0 0.00 90 75-125 <br /> Diisopropyl Ether(RIPE) 18.6 5.00 20.0 0.00 93 75-125 <br /> Ethyl Cert-Butyl Ether(ETBE) 18.0 5.00 20.0 0.00 90 75-125 <br /> tert-Amyl Methyl Ether(TAME) 17.3 5.00 20.0 0.00 86 75-125 <br /> Benzene 18.8 5.00 20.0 0.00 94 75-125 <br /> Ethylbenzene 18.5 5.00 20.0 No 92 75-125 <br /> Toluene 19.2 5.00 20.0 ND % 75-125 <br /> m,p-Xylene 36.0 5.00 40.0 ND 90 75-125 <br /> mg1L=milligrams per Liter=ppm DLR=Detection Limil.for Purpose of Reporting <br /> erg2=micragr ms per Liter=ppb Eiceprionai sample matrices or interferences may <br /> result in higher detection limbs. <br /> RESPECTFULLY SUBMITTED, <br /> �j IOLA� <br /> Jonathan Le,Laboratory Director <br /> 774.E N. West Lane. Suite B2 Stockton CA. 95210 shone: (209) 477-8105 Fax: (209)477-8148 <br />