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SUPERIOR ANALYTICAL LABORATORY INC. <br /> • 825 ARNOLD, STE 2 • MARTINEZ, CALIFORNIA 94553 • (415) 229-1512 <br />' C E R T I F I C A T E O F A N A L Y S I S <br /> LABORATORY NO 80434 DATE RECEIVED 01/05/90 <br />' CLIENT Vapor E%traction Technology DATE REPORTED 01/09/90 <br /> CLIENT JOB NO <br />' AIR ANALYSIS by NIOSH 1500 FOR TOTAL HYDROCARBONS <br /> & AROMATIC VOLATILE ORGANICS <br />' LAB # 7 <br /> SAMPLE SB--2 <br /> Analvte Vol .- ( L ) Front(mg ) Back( mg ) Tot- ( mg ) (mg/m3 ) ( ppm ) <br /> Benzene 10 0 Oil <0 009 0 . 012 1 . 2 0 38 <br />' Toluene 10 0 . 18 <0 . 009 0 . 18 18 4 . 8 <br /> Ethvl Benzene 10 0 . 027 X0 . 009 0 . 027 2 . 7 0 . 62 <br /> Xyleries 10 0 13 <0 . 009 0 . 13 13 3 . 0 <br /> ITotal Hydrocarbon 10 3 4 <0 . 1 3 4 3.10 - ---- <br /> Method Deter,, -, on Lzm-Lt BTEX-0 . 009 mg <br /> TPH-0 1 mg <br /> QAQC Summary- <br />' MS/MSD A-, erage Recovery = 93% DuPlicate RPD = 0 <br />' Ed%,ard R Morales <br /> r"aG ororyManag <br /> I <br /> I <br /> I SAN FRANCISCO MARTINEZ <br /> OUTSTANDING QUALITY AND SERVICE <br />