NYC Asbestos Air Sampling Results, Sept 19, 2001

NYC 9/11 Public Portal Document

NYC Response Asbestos Air Sampling Results at Fixed Locations S,xmpling Dato and Time: 10.00(9/19/011 to 18.00.00 (9/19/01) _______ PCM by NIOSH 7400 TEM by NIOSH 74g2 TEM I AHERA) hicAA^tiien Zi^.i 1 , Af/NAF Structures (#) . ■rfc.m < AacvAV xl-nn' Sampling Sainpliiiq Sample f/iiinr' f/cc Adjusted S-»te Date Sample No. Lecaiian Valium Matrix TEM Hec <5|1 >5p

5'1S,'2C'6i 015S2 480 Air 3949 0.032 i5<y 0015 2 1 78 46 0.0148 -Mt./if 9f1«2001 01583 480 3949 0.032 3/15 <0.006 4 1 30.71 0.0247 ‘ 74.'® 9/19S001 NS ’T S/19/2001 WS4 Ci 480 Air 20 38 3/10" <0.006 2 0 12.31 0.O0S9 2O.7« 9/19/2001 01567 D 480' Air 33.12 0.027 1/4 <0.006 1 0 6.15 q<.0048 IS‘ 9/19/2001 480 Air 39.49 0.032 3/84 <0.006 2 3 30.77 0.0247 9/10/2001 01590 //gOt'P 480 Ae 4586 0.037 2/32 <0.006 <615 <0.0049 /4..38 9/19/2001 oissi r F 480 Air 16,56 0.013 1/139 <0.008 <6.15 <0.0049 9'19/2001 NS F DUP 5/10/2001" NS 9/19/3IM1 01585 li 430 Air <7 0 <0.006 0.-12 <0.006 9/19/2001 O1S66 I 480 Air "17.20 0.014 <0.006 <6.15 <0.0049 IS u a'19;2OO1 01592 J 430 Air 12.10 001 <0.006 <8.15 <O.OO4F 9/19/2001 01588 K 480 Air 26.11 0.021" VW <0.006 1 i 12.31 0.0099 9/19/2001 NS L 01594 N 480 Air <7,0 <0.006 ___ Wailing tor Results 9/19/2001 01593 M 480 Air <7,0 <0 006 V7ai5nti| fof Resuils 9/22/2001 NS P I I (,x»aiivs

Sampling Locations; NS: Not sampled A: intersection of Barday^West Broadway AF/ANF; Asfcesos ftpers/Non asbesos fibeis B Intersection of Church rDey St. Sample volume is ftelow recommended linii! of the nietho4 C: Intersection of Uberty+Trinity •Structure (S) Roughly equilvalent Io Fiber (F) i Cl; Intersection of Liberty^ Broad way D, Intersection of Greenwich+Albany NA; not analyzed due to oveloading of particulates E; IntersBction of LibertyrSoutti End Ave NR- Analysts not recuessed F Intersection of Vesey+West St. F DUP G; Intersection of Church and Duane M; One Chase Plaza I: Watt Slreel+Uroadway J: Corner of West and Warren « o K Corner d Aibany and West N: West Side Highway/ near community college ERT; 09/21/01 9 50 AM H M; Intersection of Liberty + Broad O: Pier 25 P; Intersection of Harrison ♦ West

O NIOSH 7400: Fiber Analysis of Air samples Via NIOSH 7400. Revision 3. Issue 2. 8/15/S4 o NIOSM 7402: Asbestos Analysis at air samples by Transniission Eloeuon Microscopy o Asbestos Fiber Analysis by Transmission Electron Microscopy (TFM) EPA 40CFR Part 781 (AUFRa) I Standard criteria: EPA 40CFR Part 753 {AHERAj: 0.0lflber/cc (PCM), 705/mm2, volume 12901, for 25MM filter (TEM} o o Uli to o cn

NYC-WTC_000186258