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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 Extraction Technology DATE REPORTED 01/09/90 <br /> CLIENT JOB NO. <br /> t ATR ANALYSIS by NIOSH 1500 FOR TOTAL HYDROCARBONS <br /> & AROMATIC VOLATILE ORGANICS <br />' LAB # 5 <br /> SAMPLE SB-1 <br />' Analyte Vol .- ( L ) Front ( mg ) Back(mg ) Tot� (mg ) imZD ( ppm ) <br /> Benzene 10 <0 . 009 <0 009 <0 . 009 <0 9 <0 3 <br />' Toluene 10 <0 . 009 <0 009 <0 . 009 e0 . 9 <0 <br /> Ethyl Benzene 10 <0 009 <0 . 009 <0 . 009 < 0 9 <0 2 <br /> XNleneS 10 0 . 019 <0 . 009 0 . 019 1 9 0 . 44 <br />' Total Hydrocarbon 10 0 1 <0 1 0 . 1 10 ----- <br />' Method Det,-c tion limit BTEX-0 009 mg <br /> TPH-0 . 1 mg - <br /> QAQC Summary <br />' MS/MSD Average Recovery = 93% Duplicate RPD = 0 <br /> Edward R. _rIor�a3 <br /> es <br /> Lab0 t6- lanagez <br /> I <br /> I SAN FRANCISCO MARTINEZ <br /> OUTSTANDING QUALITY AND SERVICE <br />