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SUPERIOR ANALYTICAL LABORATORY INC. <br /> 825 ARNOLO.STE.2• MARFINCz.CALIFORNIA 94553•(415)229.1512 <br /> C E R T I F I C A T E O F ANALYSIS <br /> • LABORATORY NO. : 80-134 DATI: 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 r: 1 <br /> SAMPLE: MW--1 <br /> Analyte Vol. (L) Front(mg ) Back(mg) Tot . (mg) (mg/m3 ) (ppm) <br /> Benzene 10 0.21 <0.009 0. 21 21 6.6 <br /> Toluene 10 0. 11 <0.009 0. 1.4 14 3.7 <br /> Ethyl Benzene 10 1 . 3 <0.009 1 .3 130 30 <br /> xylenes 10 5.9 <0.009 5. 9 590 1-50 <br /> 'Dotal Hydrocarbon 10 '18 <0. 1 48 4800 ----- <br /> Method Detection Limit BTEX-0.009 mg <br /> TPH-0.1 mg <br /> ' QAQC Summary: <br /> zu <br /> MS/MSD Average Recovery = 93%: Duplicate RPD = 0 <br /> Edward R.-,,Mo'Fales <br /> La A�,atox} Manager <br /> L' <br /> SAN FRANCISCO _ MARTINEZ <br /> OUTSTANDING QUALITY AND SERVICE <br />