NYC-WTC_000209299

NYC 9/11 Public Portal Document

NO QC EVALUATION HAS BEEN PERFORMED, I 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 05/25/02

File Name NYC1B76 NYC1877 NYC1878 NYC1879 NYC1881 NYC1830 Sample Location Instrument Blank Tedlar Bag Blank Washing Tent Austin Tobin Plaza North Tower South Tower Ambient Air Sample Number A07910 A07911 A07912 A07913 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 |lp8„ pPB, PPb„ ppb„ ppbv ppbv

Propylene RL RL RL RL RL RL Chlorodifluoromelhane RL RL RL RL RL RL Dichlorodifluoromethane RL RL RL RL RL RL Dichlorotetrafluoroelhane 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 T richlorofluoromelhane RL RL RL RL RL RL Isopropyl Alcohol RL RL RL RL RL RL Acetone RL RL RL RL RL RL T rlchlorotrifluoroethane RL RL RL RL RL RL 1,1-Oichloroethene RL RL RL RL RL RL 3-ChloropropenG RL RL RL RL RL RL Methylene Chloride RL RL RL RL RL RL MTBE RL RL RL RL RL 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-Tnchloroethane 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 RL 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 RL 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 o-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-Trimethylbenzene RL RL RL RL RL RL 1,3-Dichloroben2ene RL RL RL RL RL RL 1.4-Dichloroben2ene 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_002857776

NYC-WTC_000209299