WTC air analysis results, February 23, 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 02/23/02

File Name NYC1128 NYC1129 NYC1130 NYC1131 NYC1133 NYC1132 NYC1134 Sample Location Instrument Blank Tedlar Bag Blank Washing Tent Austin Tobin Plaza North Tower South Tower Bankers Trust Ambient Air Sample Number A07516 A07517 A07518 A07519 A07520 Sample Height Breathing Level Breathing Level Ground Level Ground Level Ground Level Sample Volume 250 mL 250 mL 250 mL 250 mL 250 mL 250 mL Reporting Limit (RL) 20 20 20 20 _20 20 20 Sample Cone. Units ppL PPk PPb, fW ppL pPL PPk

Propylene RL RL RL RL RL _E^ RL Chlorodifluoromethane RL RL RL RL RL RL RL Dichlorodifluoromethane RL RL RL RL RL RL RL Dichlorotetrafluoroethane RL RL RL RL RL RL RL Chloromethane RL RL RL RL RL RL RL Vinyl Chloride RL RL RL RL RL RL RL 1,3-Butadiene RL RL RL RL RL RL RL Bromomethane RL RL RL RL RL RL RL Chloroethane RL RL RL RL RL RL RL Trichloro fluoromethane RL RL RL RL RL RL RL Isopropyl Alcohol RL RL RL RL RL RL RL Acetone RL RL RL RL RL RL BL T richlorotrifluoroethane RL RL RL RL JZk JL BL 1,1-Dichloroethene RL RL RL RL RL JL BL 3-Chloropropene RL RL RL RL RL RL BL Methylene Chloride RL RL RL RL RL RL BL MTBE RL RL RL RL RL RL RL trans-1.2-Dichloroethene RL RL RL BL RL RL BL Hexane RL RL RL RL RL RL BL 1.1-Dichloroethane RL RL RL RL RL RL RL Vinyl Acetate RL RL RL BL RL BL 2-Butanone RL RL RL BL RL BL cis-1,2-DichlorDethene RL RL RL RL RL RL BL Ethyl Acetate RL RL RL RL RL RL RL Chloroform RL RL RL BL RL Jk BL Tetrahydrofuran RL RL RL RL RL RL BL 1,1,1-Trichloroethane RL RL RL BL J5L RL BL Cyclohexane RL RL RL RL RL BL Carbon Tetrachloride RL RL RL BL RL RL BL 1.2-Dichloroethane RL RL RL RL RL RL BL Benzene RL RL RL BL RL RL BL Heptane RL RL RL RL RL RL BL Trichloroethene RL RL RL RL RL RL BL 1,2-Dichloropropane RL RL RL RL RL RL RL 1,4-Dioxane RL RL RL BL RL RL BL Methyl Isobutyl Ketone RL RL RL BL RL RL BL cis-1,3-Dichloropropene RL RL RL RL RL RL BL Toluene RL RL RL RL RL RL RL trans-1,3-Dichloropropene RL RL RL BL RL RL BL 1,1,2-Trichloroethane RL RL RL BL RL ZL BL 2-Hexanone RL RL BL RL RL BL Tetrachloroethene RL RL RL RL RL RL BL Dibromochloromethane RL RL RL RL RL RL BL 1,2-Dibromoethane RL RL RL RL RL RL BL Chlorobenzene RL RL RL BL RL RL BL Ethylbenzene RL RL RL BL RL BL m&p-Xylenes RL RL RL BL J5L RL BL 0-Xylene RL RL RL RL RL RL BL Styrene RL RL RL BL RL RL BL Bromoform RL RL RL RL RL RL BL 1,1,2,2-Tetrachloroethane RL RL RL BL RL RL BL 4-Ethyltoluene RL RL RL RL RL RL BL 1,3,5-Trimelhylbenzene RL RL RL BL RL RL BL 1.2,4-Trimelhvlbenzene RL RL RL BL RL RL BL 1,3-Dichlorobenzene RL RL RL BL RL RL BL 1,4-Dichlorobenzene RL RL BL RL RL BL Benzyl Chloride RL BL RL RL BL 1,2-Dichlorobenzene RL BL RL RL RL BL 1,2,4-T richlorobenzene RL RL BL RL RL BL Hexachloro-1,3-Butadiene RL RL RL RL RL RL RL

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