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Excelchem Environmental Labs <br /> Ramage Environmental Project: SJ County Courthouse <br /> 465 South Meadows Parkway Suite 20 pmb 48 Project Number: NA Date Reported: <br /> Reno,NV 89521 Project Manager: Joe Ramage 03/09/07 14:52 <br /> Oxygenates-Quality Control <br /> k-. <br /> Re prtin pik ourle 12)C �pD <br /> Analyte Result pLtmt <br /> Unit, Resuclt ^/oREC Limns RPD Limit Notes <br /> 13atch A C0031 -EPA 8260B <br /> flank(AQC0031-BLKI) Prepared:03/06/07 Analyzed: 03/07/07 <br /> Surrogate:Dibromofluoromethane 14.0 ug/l 12.5 112 70-130 <br /> 'surrogate:Toluene-d8 13.2 12.5 106 70-130 <br /> iurrogate:4-Bromofluorobenzene 12.9 12.5 103 70-130 <br /> "Ethanol ND 20.0 <br /> TBA ND 5.0 " <br /> Aethyl ten Butyl Ether ND 0.5 " <br /> moi-isopropyl ether ND 0.5 " <br /> Ethyl tert-Butyl Ether ND 0.5 " <br /> Tert-Amyl Methyl Ether ND 0.5 " <br /> ,,2-Dichloroethane ND 0.5 <br /> &4,2-Dibromoethane(EDB) ND 0.5 " <br /> If CS(AQC0031-BS1) Prepared:03/06/07 Analyzed:03/07/07 <br /> Surrogate:Dibromofluoromethane 13.9 149/1 12.5 111 70-130 <br /> "'$arrogate: Toluene-d8 13.0 12.5 104 70-130 <br /> Surrogate:4-Bromofluorobenzene 12.7 12.5 102 70-130 <br /> i,l-Dichloroethene 11A 0.5 10.0 111 80-120 <br /> ..,3enzene 10.3 0.5 10.0 103 80-120 <br /> Trichloroethene 9.7 0.5 10.0 97.0 80-120 <br /> Toluene 10.0 0.5 10.0 100 80-120 <br /> :;hlorobenzene 10.2 0.5 10.0 102 80-120 <br /> W <br /> Matrix Spike(AQC0031-MSI) Source:0703018-01 Prepared:03/06/07 Analyzed:03/07/07 <br /> Turrogate:Dibromofluoromethane 13.6 ug/1 12.5 109 70-130 <br /> surrogate: Toluene-d8 12.8 12.5 102 70-130 <br /> urrogate:4-Bromofluorobenzene 13.2 12.5 106 70-130 <br /> I,1-Dichloroethene 11.8 0.5 10.0 ND 118 80-120 <br /> 3enzene 10.8 0.5 10.0 1.4 94.0 80-120 <br /> ,.trichloroethene 10.0 0.5 10.0 ND 100 80-120 <br /> Toluene 10.2 0.5 10.0 ND 102 80-120 <br /> Chlorobenzene 10.0 0.5 10.0 ND 100 80-120 <br /> Excelcherrt Environmental Lah The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Laboratory Representative Page 7 of 9 <br />