Asbestos air sampling results, Sept 29, 2001

NYC 9/11 Public Portal Document

NYC Response Asbestos Air Sampling Results at Fixed Locations Sampling Date and Time: 09/29/01 1200 noon to 2400

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

9/29/01 01792 A 720 Air <7.0 <0.004 0/8 <0.004 1 0 8.89 0.0048 9/29/01 01793 B 720 Air 7.64 0.004 0/5 <0.004 1 0 8.89 0.0048 9/29/01 01794 C 1 720 Air <7.0 <0.004 0/3 <0.004 2 1 26.67 0.0143 9/29/01 01797 D 720 Air 14.01 0.007 0/8 <0.004 2 0 17.78 0.0095 9/29/01 01801 E .720 Air 7.64 0.004 0/4 <0.004 7 2 80 0.0428 9/29/01 01802 F 720 Air <7.0 <0.004 0/2 <0.004 3 0 26.67 0.0143 w 9/29/01 01795 H 720 Air <7.0 <0.004 0/1 <0.004 1 0 8.89 0.0048 G 9/29/01 01796 I 720 Air <7.0 <0.004 0/0 <0.004 2 1 26.67 0.0143 ro 9/29/01 01791 J 720 Air <7.0 <0.004 0/2 <0.004 2 0 17.78 0.0095 G M 9/29/01 01798 K 720 Air 11.46 0.006 0/4 <0.004 4 0 35.56 0.0190 o 9/29/01 01807 L 720 Air <7.0 <0.004 0/1 <0.004 0 0 <8.89 <0.0048 H 9/29/01 01806 M 720 Air <7.0 <0.004 0/0 <0.004 0 1 8.89 0.0048 H O 9/29/01 01805 N 720 Air <7.0 <0.004 0/0 <0.004 0 0 <8.89 <0.0048 9/29/01 01800 P 720 Air <7.0 <0.004 0/1 <0.004 1 0 8.89 0.0048 G 9/29/01 01803 Q 720 Air <7.0 <0.004 0/1 <0.004 3 1 35.56 0.0190 O 9/29/01 01804 Q Dup 720 Air <7.0 <0.004 0/0 <0.004 0 0 <8.89 <0.0048 H 9/29/01 01799 S 720 Air 10.19 0.005 0/2 <0.004 5 1 53.33 0.0285 M O O coc# 04077 ■* Amosite/Cyrysotile/Total H O s < Sampling Locations: NS: Not sampled a A: NE corner of West Broadway 8 Barclay AF/ANF: Asbestos fibers/Non asbestos fibers O M 3 B: SE corner of Church 8 Dey St. Sample volume is below recommended limit of the method: a H C: Trinity (a.k.a. Church) 8 Liberty •Structure (S) roughly equivalent to fiber (f) M > Cl: SW corner of Broadway 8 Liberty St. NR: Not reported G D: East end of Albany St. at Greenwich St. NA: not analyzed due to overloading of particulates s E: Western end of Liberty St. at South End Ave o F: Northern median strip of Vesey 8 West St G: Church and Duane St to H: South side of Chase Manhattan Plaza at Pine St. I: SE corner of Wall St. 8 Broadway W M J: NE corner of Warren 8 West St. G K: West St. 8 Albany in median strip H L: On walkway toward North Park rec area (north side of Stuyvesant High), access to TAGA bus area M: Western end of Harrison St. at West St. (on tree next to bulkhead) to o N: South side of Pier 25 (next to volleyball court) ERT: 10/02/01 9:50 AM o P: NE corner of South End Ave. 8 Albany co Q: Barclay 8 West St. (center island) in proximity to USCG command post Q Dup O R: TAGA Bus Location H S: Rector 8 South End

to NIOSH 7400: Fiber Analysis of Air Samples via NIOSH 7400, Revision 3, Issue 2, 8/15/94 O NIOSH 7402: Asbestos Analysis of Air Samples by Transmission Electron Microscopy Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) EPA 40CFR Part 763 (AHERA) o o Standard criteria: EPA 40CFR Part 763 (AHERA): 0.01 fiber/cc (PCM), 70 S/mm’, volume 1200 L, for 25 mm filter (TEM) Io o IP FL_09_29_01 Cn co UP UP

NYC-WTC_000176028