Asbestos air sampling results, Sep 2001

NYC 9/11 Public Portal Document

NYC Response Asbestos Air Sampling Results for Freshkill Landfill Sampling Date and Time: 09/26/01 to 09/27/01 (1830 to 0730)

PCM by NIOSH 7400 TEM by NIOSH 7402 TEM AHERA) Sampling Sampling Sample f/mm* «cc AF/NAF Adjusted Structures (#) S/mm^ S-«cc Date Sample No Location Volume Matrix TEM Occ <5(1 >5p

9/27/01 00764 #1 720 Air <7.0 <0.004 0/3 <0.004 0 0 <8.89 <0.0048 9/27/01 00765 #2 720 Air <7.0 <0.004 0/1 <0.004 0 0 <8.89 <0.0048 9/27/01 00766 #3 720 Air <7.0 <0.004 0/2 <0.004 0 0 ■<8.89 <0.0048 9/27/01 00767 #4 720 Air <7.0 <0.004 0/1 <0.004 0 0 <8.89 <0.0048 9/27/01 00768 #5 720 Air <7.0 <0.004 0/1 <0.004 0 0 <8.89 <0.0048 9/27/01 00769 #6 700 Air <7.0 <0.004 0/2 <0.004 0 0 <8.89 <0.0048 9/27/01 00770 #7 720 Air <7.0 <0.004 0/1 <0.004 0 0 <8.89 <0.0048 9/27/01 02137 #8 720 Air <7.0 <0.004 0/1 <0.004 0 0 <8.89 <0.0048 9/27/01 02138 #9A 240 Air <7.0 <0.011 0/1 <0.011 0 0 <8.00 <0.0128 9/27/01 02139 #9B 720 Air <7.0 <0.004 on <0.004 0 0 <8.89 <0.0048 9/27/01 02140 10 720 Air <7.0 <0.004 0/0 <0.004 0 0 <8.89 <0.0048 oefMlir

NS: Not sampled AF/ANF: Asbestos fibers/Non asbestos fibers Sample volume is below recommended limit of the method: ‘Structure (S) Roughly equivalent 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): 0.01 fiber/cc (PCM), 70 S/mm^ volume 1200 L, for 25 mm filter (TEM)

ERT; 09/29/01 9.50 AM

FK-09-27-01A

NYC-WTC_000150227