NYC Asbestos Air Sampling Results, Sept 21-22, 2001

NYC 9/11 Public Portal Document

KYC Response Air Stampiing RoruH*. fo' rro^tikill i anrtMi sanipimg ome and Tirno.

PCM h< NiOSH 7400 TEM bv MIOSH 7402 TEM i AHERAj Sampling Sampling Sample f/mm’ f/cc AF/NAF Adjusted Struciures (#) S/nin/ S-f/cc Date Sample No. Location Volume Matrix TEM f/cc <5u >5(1

9/22/2001 01611 «1 599 Air <7 <0.004 0/3 <0.004 0 0 <7.75 <0.015 9/22/2001 01612 #2 666 Air <7 <0.004 0/0 <0,004 0 0 <7.75 <0.0045 9/22/2001 01613 #3 373 Air <7 <0.007 O.'O 2^:007 0 0 <7.78 <0.008 9/22/2001 01614 iM 679 Air <7 <0004 00 <0.G04 0 0 <7.76 <0.0044 9/22/2001 01615 #6 676 Air <7 <0.004 00 <0.004 0 0 <7.75 <0.0044 9/22^2001 01616 »6 679 Zur <7 <0.004 .0/6 <0.004 0 0 <7.75 -0.0044 9/22/2001 01617 #7 661 Air <7 <0.004 <O.CXM 0 0 <7.75 <0.0044 9/22/2001 01618 S8 677 Air <7 <0004 0/0 <0 004 0 0 <7.75 <0.0044 9/22/2001 01613 #9 4S1 Air <7 <0.006 0/0 <0 006 0 0 <775 <0.0066 S/22/2001 01620 #10 393 ZVf <7 <0.007 0/0 <0 007 c 0 <7.75 <0.0076

NS: Not sampled AF/ANF; Asbesos fibers/Non asbesos fibers Sample volume is betov/ recommended limit of the method: •Structure (S) Roughly equilvaleni to Fiber (F) NA: not analyzed due to overloading of particulates

NIOSH 7400: Fiber Analysis of Air samples Via NIOSH 7400, Revision 3, Issue 2,8/15/94 NIOSH 7402: Asbestos Analysis of air samples by Transmission Electron Microscopy Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) EPA 40CFR Part 763 (AHERA) Standard criteria: EPA 40CFR Part 763 (AHERA): O Omher/cc (PCM). 70S,‘min2, volume 1200L, lor 2SMM filter (TEM)

aC3aOO1 9:50 AM

o H

s o o o I o o cn co Cn Ui co

NYC-WTC_000186262