WTC air analysis results, Jan 2002

z z o o g 1^ ■D o c o NO QC EVALUATION HAS BEEN PERFORMED, CT o DATA VALIDITY IS UNSUBSTANTIATED o' 00 (33 ■D <33 AND THE DATA SHOULD BE USED WITH DISCRETION o 00 3. <33 03

DRAFT GC/MS Results for 01/03/02 o o Tentatively Identified Compounds o c 3 CD O File Name NYC658 NYC659 NYC660 Sample Location Instrument Blank Tedlar Bag Blank Washing Tent Sample Number A07301 Sample Height Breathing Level Volume 250 mL 250 mL None None None

File Name NYC661 NYC665 NYC662 Sample Location Austin Tobin Plaza North Tower South Tower Sample Number A07302 A07303 A07304 Sample Height Breathing Level Ground Level Ground Level Volume 250 mL______________________ 250 mL 250 mL N,N-Dimethyl Acetamide 21 ppby None Furan 110 ppby Methyl Acetate 27 ppb„ Butanal 47 ppb^ 1-Butanol 72 ppb^ Methylcyclohexane 32 ppb„ .alpha.-Pinene 59 ppb^ Decane 26 ppby Unknown 25 ppb^ o Benzaldehyde 48 ppb^ 2-Ethylhexanol 31 ppb^

I 2,2,5-Trimethylhexane 24 ppb. Unknown 23 ppb^ Undecane 40 ppb,,

I Unknown 23 ppbv

CO