Draft WTC Air Analysis Results, Dec 20, 2001

NYC 9/11 Public Portal Document A

NO QC EVALUATION HAS BEEN PERFORMED, ,. '(1 t DATA VALIDITY IS UNSUBSTANTIATED AND THE DATA SHOULD BE USED WITH DISCRETION WTC TEDLAR BAG AIR ANALYSIS, TO-15 MODIFIED METHOD 1 DRAFT GC/MS Results for 12/20/01

|Fiie Name NYC513 NYC514 NYC515 NYC516 NYC518 NYCSIT^^ ^Sample Location Instrument Blank Tedlar Bag Blank Washing Tent Austin Tobin Plaza North Tower South Tower?5?"r Ambient Air Plume - - .pturoeria^ Sample Number________ A07243 A07244 A07245 ■ ■-A07246.T^.t;-l Sample Height_________ Breathing Level Breathing Level Ground Level Ground Level V Sample Volume_________ 250 ml 250 mL 250 mL 250 mL ' 250 mL Reporting Limit (RL) _22_ 20 20 20 20 PPM?:?:;:;; Sample Cone. Units ppbv ppbv ppb. ppbv ppb.

Propylene RL RL RL RL 170 . 1900 ’4

Chlorodifluoromethane RL RL RL RL RL ■Y RLWiV.-i Dichlorodifluoromethane RL RL RL RL RL RL RL RL RL A, Dichlorotetrafluoroethane Chloromelhane RL RL RL ' RL 190 Vinyl Chloride RL RL RL RL RL ■■■■

1,3-Butadiene__________ RL RL RL RL RL Bromomethane RL RL RL RL RL ,, 610 XL ■ Chloroethane RL RL RL RL RL 4L-i.200 Trichlorofluoromethane RL RL RL RL RL 22 Isopropyl Alcohol RL RL . RL 160 RL .1100?/: Acetone RL RL RL 83 110 15000 • ’ : T richlorotrifluoroethane RL RL RL RL RL L Y - -RL Y 1,1-Dichloroethene RL RL RL RL RL 32 ■ 3-Chloropropene RL RL .RL RL RL I RL “ ~~ Methylene Chloride RL RL RL RL RL 44 . MTBE RL RL RL RL RL RL trans-1,2-Dichloroethene RL RL RL RL RL ' RL Hexane RL RL RL RL RL .160 ' ? 1,1-Dichloroefhane RL RL RL . RL RL ' -RL -'Y Vinyl Acetate RL RL RL RL RL RL 2-Butanone RL RL RL RL 22 1700 " , . kis-1.2-Dichloroethene RL RL RL RL RL RL > : ■thyl Acetate RL RL RL RL RL • ■ RL "'-T..- ; Chloroform RL RL RL RL RL -■24 , - Tetrahydrofuran RL RL RL RL 23 ; .:360 1.1,1 -Trichloroethane RL RL RL RL RL : 35 Cyclohexane___________ RL RL RL RL RL RL r.L'. - Carbon Tetrachloride RL RL RL RL RL ■ ■ RL 2 1,2-Dichloroethane RL RL RL . RL RL , -130 Benzene RL RL RL RL 210 4400 Heptane RL RL RL RL RL 170 Trichloroethene RL RL RL RL RL RL 1,2-Dichloropropane RL RL RL RL RL RL ■ - 1.4-Dioxane RL RL RL 29 RL . 120 .. Methyl Isobutyl Ketone RL RL RL RL RL 380 cis-1,3-Dichloropropene RL RL RL RL RL Y- - ■. Toluene RL RL RL - -hL 130 5900 •- trans-1,3-Dichloropropene RL RL RL RL RL 1,1,2-Trichloroethane RL RL ——SL—i— RL RL RL RL________ 2-Hexanone RL RL RL RL RL Tetrachloroethene RL RL RL RL RL 21________ Dibromochloromelhane 1,2-Dibromoethane _5L RL RL RL RL RL RL________ RL RL RL RL RL Chlorobenzene RL RL _5L_ ■ RL Ethylbenzene RL RL _5L_ 150 RL RL 210 7300 mSp-Xylenes RL RL 0-Xylene RL RL RL RL __5L_ RL . RL 240________ RL 93______ _ Styrene RL RL RL RL 42 2400 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 57________ ^,5-Trimethylbenzene RL RL RL ^2.4-Trimethylbenzene _5k_ RL RL RL RL RL RL RL RL________ 1,3-Dichlorobenzene RL RL RL RL RL 55________ 1,4-Dichlorobenzene Benzyl Chloride RL RL RL RL _5k_ —St- RL RL RL RL RL 33 1,2-Dichlorobenzene RL RL RL RL RL 35 1,2.4-Trichlorobenzene RL RL RL RL RL RL________ Hexachloro-1,3-Butadiene RL RL RL RL RL RL

CITY_21MC100_002962003

NYC-WTC_000186607