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r a <br /> North State Labs CA ELAP# 1753 <br /> 90 South Spruce Avenue, Suite V • South San Francisco, CA 94080 • (650) 266-4563 • FAX (650) 266-4560 <br /> CERTIFICATE OF ANALYSIS <br /> Job Number 03-1269 Date Sampled 09/08/2003 <br /> Client Env Restoration Services Date Analyzed 09/16/2003 <br /> Pro3ect 26080 THORTON RD THORTON Date Reported 09/15/2003 <br /> Volatile Organics by GC/MS Method 8260 <br /> Quality Control/Quality Assurance Summary <br /> Laboratory Number 03-1269 MS/MSD RPD Recovery RPD <br /> Client ID Blank Recovery Limit Limit <br /> Matrix W W <br /> Analyte Results %Recoveries <br /> UG/L <br /> Ethanol ND<100 <br /> Methyl-tert-butyl ether ND<l <br /> Di-isopropyl ether (DIPS) ND<l <br /> tert-butyl Alcohol ND<50 <br /> Ethyl tert-butyl ether ND<l <br /> tert-Amyl methyl ether ND<l <br /> 1,2--Dichloroethane ND<l <br /> #1 -D <br /> ibromoethane ND<l <br /> ne ND<1 115/105 9 74-135 21 <br /> lbenzene ND<l <br /> Toluene ND<l 125/115 8 61-141 19 <br /> o-xylene ND<l <br /> Xylene, Isomers m & p Nr)<2 <br /> 1,1-Dichloroethene ND<1 85/75 13 51-121 25 <br /> Trichloroetnene ND<2 105/100 5 69-129 20 <br /> Chlorobenzene ND<2 125/115 8 70-139 19 <br /> SUR-Dibromofluoromethane 106 114/114 0 67-129 21 <br /> S -Toluene-d8 101 105/105 0 72-119 16 <br /> rSUR-4-Bromofluorobenzene 104 106/106 0 78-121 19 <br /> Reviewed arm Ap ved <br /> John Mu <br /> Labo ory re X <br /> Page 2 Of 2 <br />