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r � <br /> North State Environmental Laboratory CA FLAP# 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 99-1130 Date Sampled 07/21/99 <br /> Client Compliance & Closure, Inc Date Analyzed 07/26/99 <br /> Project 12118-3 / Quick Stop #121, Manteca Date Reported 08/03/99 <br /> Volatile Organics by GC/MS Method 8260 <br /> Quality Control/Quality Assurance Summary <br /> Laboratory Number 99-1130 MS/MSD RPD <br /> Client 20 Blank Recovery <br /> Matrix WATER WATER <br /> Analyte Results %Recoveries <br /> Ug/1' <br /> Ethanol ND<100 <br /> Methyl-t-Butyl Ether ND<l <br /> Di-isopropyl Ether ND<5 <br /> tertiary Butyl Alcohol ND<50 <br /> Ethyl-t-Butyl Ether ND<5 <br /> t-Amyl Methyl Ether ND<l <br /> 1,1-Dichloroethene ND<1 96 4 <br /> Benzene ND<1 118 2 <br /> Trichloroethene ND<1 121 2 <br /> 0uene ND<1 100 1 <br /> orobenzene ND<l 121 1 <br /> SUR-Dibromofluoromethane 90 % Rec 98/90 9 <br /> SUR-Toluene-d8 90 % Rec 94/93 1 <br /> SUR-4-Bromofluorobenzene 99 % Rec 96/93 3 <br /> I <br /> r;d an owed <br /> John A Murphy <br /> Laboratory Director <br /> Page 2 Of 2 <br />