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r <br /> SUPERIOR ANALYTICAL LABORATORY INC. <br /> 825 ARNOLD,STE 2 • MARTINEZ, CALIFORNIA 94553 • (415) 229-1512 <br /> r <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 Extraction 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 # 6 <br /> SAMPLE MW-3 <br />' Analvte Vol .- ( L ) Front ( mg ) Back( mg ) rot- ( mg ) ( mg/m3 ) ( ppm ) <br /> Benzene 10 0 . 035 <0 . 009 0 G35 3 5 1 1 <br />' Toluene 10 0 68 <0 . 009 0 68 68 18 <br /> Ethyl Benzene 10 0 . 10 <0 009 0 10 10 2 . 3 <br /> Xvlenes 10 0 . 31 <0 . 009 0 . 31 31 7 2 <br /> . Total Hydrocarbon 10 15 <0 1 15 1500 - - --- <br />' Method Detc( I ion Limit BTEX-0 . 009 mg <br /> TPH-b . 1 mg <br /> QAQC Summary <br /> MS/MSD L\\ erage Recovery = 93% Duplicate RPD = 0 <br /> Edtiard R Morales <br /> a for r,, Manager <br /> SAN FRANCISCO MARTINEZ <br /> OUTSTANDING QUALITY AND SERVICE <br />