Asbestos air sampling results, September 2001

NYC 9/11 Public Portal Document

NYC Response Asbestos Air Sampling Results at Fixed Locations Sampling Date and Time: 16.00 (9/22/01) to 04.00 (09/23/01)

PCM by NIOSH 7400 TEM by NIOSH 7402 TEM (AHER/X) trampling Sampling Sample f/mm' Wcc AF/NAF Adjusted Structures (#1 S/mm’ S-t/cc* Date Sample No. Location Votume Matrix TEM f/cc <5y

S)/22 - 9/23 O062S A 720 /Mr 29.3 0.016 0/4 -=0.004 NA 9/22 - 9/23 "00623 B 720 Air 20.38 0.011 1/2 ■^=0.004 1 0 8.89 0.0048 51/22 - 9/23 "00627 C 720 /Mr 21.02 0.011 0/1 ■^=0.004 0 1 8.89 0.0048 $1/22 - 9/23 "00629 D 720 /Mr NA NA NA NA NA 9/22 - 9/23 "01462 E 720 Air <7.0 <0.004 OA) ■^=0.004 0 0 <8.89 <0.0048 9/22-9/23 "01461 F 720 /Mr 15.29 0.008 0/1 ■^=0.004 2 0 17.78 0.0095 ~9/22 - 9/23 01465 FDUP 720 Air 20.38 0.011 0/1 "^=0.004 0 0 <8.89 <0.0048 9/22 - 9/23 " NS G 9/22 - 9/23 "00630 H 720 Air 8.92 0.005 0/2 •=0.004 0 0 <8.89 <0.0048 5^22 - 9/23 00628 I 720 /Mr 8.92 0.005 0/2 "^=0.004 0 0 <8.89 <0.0048 9/22-9/23 "01466 J 720 Air 1Z1 0.006 OA) "^=0.004 0 0 <8.89 <0.0048 9/22-9/23 "00625 K 720 Air 28.03 0.015 0/0 ■^=0.004 1 1 2778 0.0095 “9/22 - 9/23 "00622 L 720 Air 9.55 0.005 0/0 ■:=o.oo4 0 0 <8.89 <0.0048 51/22-9/23 "01464 N 720 Air <7.0 <0.004 0/1 ■=0.004 0 0 <8.89 <0.0048 9/22-9/23 01463 M 720' /Mr 10.19 0.005 0/0 "^43.004 0 0 <8.89 <0.0048 “(1/22 - 9/23 NS 0 “51/22 - 9/23 00624 P 720 Air <7.0 <0.004 OA) ■=0.004 1 0 8,89 0.0048 OUXHIH}

Sampling Locations; NS; Not sampled A: Intersection of Barctay+West Broadway AF/ANF: Asbesos fibers/Non asbesos fibers B: Intersection of Church+Dey St. Sample volume is below recommended limit of the method: Cl; Intersection of Liberty+Broadway •Structure (S) Roughly eguilvalent to Fiber <F) D: Intersection of Greenwicfi+Albany N/M not analyzed due to oveloading of particulates E: Intersection of Liberty+South End Ave NR: /Vialysis not requested F: Intersection of Vesey+West St. Gi; Intersection of Church and Duane H; One Chase Plaza I; Wall Street+Broadway J: Comer of West and Warren K; Corner of Albany and West L: Slupe High North M: Pier 25 ERT; 09/24/01 0.50 AM O M: Intersection of Harrison + West H P: Intersection of Albany and South end

to MIOSH 7400: Filler Analysis of Air samples Via NIOSH 7400, Revision 3, Issue 2. 8/15/94 s O MIOSH 7402: Asbestos Analysis of air samples by Transmission Electron Microscopy Aisbestos Fiber Analysis by Transmission Electron Microscopy (TEM) EPA 40CFR Part 763 (AHERA) o Standard criteria: EPA 40CFR Part 763 (AHERA): O.OIfIber/cc (PCM). 703/mm2, volume 1200L, (or 2SMM filter (TEM) o I o o FL-09-234)1a.xls cr^ co Ui cr^ cr^

NYC-WTC_000186118