WTC air analysis results, February 6, 2002

NYC 9/11 Public Portal Document

NO QC EVALUATION HAS BEEN PERFORMED, DATA VALIDITY IS UNSUBSTANTIATED AND THE DATA SHOULD BE USED WITH DISCRETION WTC TEDLAR BAG AIR ANALYSIS, TO-15 MODIFIED METHOD DRAFT GC/MS Results for 02/06/02

File Name NYC973 ■ NYC974 NYC975 NYC976 NYC978 NYC977 Sample Location Instrument Blank Tedlar Bag Blank Washing Tent Austin Tobin Plaza North Tower South Tower Ambient Air Sample Number A07437 A07438 A07440 A07439 Sample Height__________ Breathing Level Breathing Level Ground Level Ground Level Sample Volume 250 mL 250 mL 250 mL 250 mL 250 mL Reporting Limit (RL)_____ 20 20 20 20 20 20 Sample Cone. Units PPbv ppb. PPbv Ppb, PPb, PPbv

Propylene RL RL RL RL 27 RL Chlorodifluorome thane RL RL RL RL RL RL Dichlorodifluoromethane RL RL RL RL 34 RL Dichlorotetra fluoroethane RL RL RL RL RL RL Chloromethane RL RL RL RL RL RL Vinyl Chloride___________ RL RL RL RL RL RL 1,3-Butadiene RL RL RL RL RL RL Bromomethane RL RL RL RL RL RL Chloroethane RL RL RL RL RL RL Trichlorofluoromethane RL RL RL RL RL RL Isopropyl Alcohol________ RL RL RL RL RL RL Acetone RL RL RL RL 45 RL Trichlorotrifluoroethane RL RL RL RL RL RL 1,1-Dichloroethene RL RL RL RL 70 RL 3-Chloropropene________ RL RL RL RL RL RL Methylene Chloride RL RL RL RL RL 27 MTBE RL RL RL RL 28 RL trans-1,2-Dichloroethene RL RL RL RL RL RL Hexane RL RL RL RL RL RL 1,1-Dichloroethane______ RL RL RL RL RL RL Vinyl Acetate___________ RL RL RL RL RL RL 2-Butanone RL RL RL RL RL RL cis-1,2-Dichloroethene RL RL RL RL RL RL Ethyl Acetate___________ RL RL RL RL RL RL Chloroform RL RL RL RL RL RL Tetrahydrofuran_________ RL RL RL RL RL RL 1.1,1-Trichloroethane RL RL RL RL RL RL Cyclohexane___________ RL RL RL RL RL RL Carbon Tetrachloride RL RL RL RL RL RL 1,2-Dichloroethane RL RL RL RL RL RL Benzene RL RL RL RL 53 RL Heptane_______________ RL RL RL RL RL RL Trichloroethene RL RL RL RL RL RL 1,2-Dichloropropane RL RL RL RL RL RL 1,4-Dioxane____________ RL RL RL RL RL RL Methyl Isobutyl Ketone RL RL RL RL RL RL cis-1.3-Dichloropropene RL RL RL RL RL RL Toluene RL RL RL RL 27 RL trans-1,3-Dichloropropene RL RL RL RL RL RL 1,1.2-Trichloroethane RL RL RL RL RL RL 2-Hexanone____________ RL RL RL RL RL RL Tetrachloroethene_______ RL RL RL RL RL RL Dibromochloromethane RL RL RL RL RL RL 1,2-Dibromoethane RL RL RL RL RL RL Chlorobenzene RL RL RL RL RL RL Ethylbenzene RL RL RL RL RL RL m&p-Xylenes RL RL RL RL RL RL 0-Xylene RL RL RL RL RL RL Styrene_______________ RL RL RL RL RL RL Bromoform RL RL RL RL RL RL 1,1,2,2-Tetrachloroethane RL RL RL RL RL RL 4-Ethyltoluene RL RL RL RL RL RL 1,3.5-Trimethylbenzene RL RL RL RL RL RL 1,2,4-T rimethylbenzene RL RL RL RL RL RL 1,3-Dichlorobenzene RL RL RL RL RL RL 1,4-Dichlorobenzene RL RL RL RL RL RL Benzyl Chloride RL RL RL RL RL RL 1,2-Dichlorobenzene RL RL RL RL RL RL 1,2,4-Trichlorobenzene RL RL RL RL RL RL Hexachloro-1,3-Butadiene RL ■RL RL RL RL RL

CITY_21MC100_002949004

NYC-WTC_000186671