NYC-WTC_000231726

NYC 9/11 Public Portal Document

NYC Response Asbestos Air Sampling Resuits at Fixed Locations Data VaUdatlon Date; 01/27/2002 Sampling Date and Time: 01/25/02 0001 to 1200 PCM bv NiOSH 7400 TEM ( AHERA) PCM fibers Sampiing Sampiing Sample Structures (#) Dats Sample No. Location Volume* Matrix f/mm’ f/cc O.Sp.Sp 5p S/mm^ S-f/cc** 01/25/02 RST-03678 L 720 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 RST-03679 L-Duplicate 717 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 RST-03680 Mf 667 Air <7.0 <0.004 0 0 <8.00 <0.0046 01/25/02 RST-03681 \/l1-Duplicate 720 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 N NS Air NS NS NS NS NS NS 01/25/02 RST-03682 J 720 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 RST-03683 Q 720 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 RST-03684 F 720 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 RST-03685 A 720 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 RST-03686 B 720 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 RST-03687 C 720 Air 7.64 0.004 0 0 <8.89 <0.0048 6 01/25/02 RST-03688 H 720 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 RST-03689 I 720 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 RST-03690 D 705 Air 7.64 0.004 0 0 <8.89 <0.0049 6 01/25/02 RST-03691 K 720 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 RST-03692 T 705 Air <7.0 <0.004 0 0 <8.89 <0.0049 01/25/02 RST-03693 U 720 Air <7.0 <0.004 1*** 0 8.89 0.0048 01/25/02 RST-03694 V 720 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 RST-03695 s 720 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 RST-03696 p 695 Air <7.0 <0.004 0 0 <8.89 <0.0049 01/25/02 RST-03697 E 713 Air <7.0 <0.004 0 0 <8.89 <0.0048 01/25/02 RST-03698 w 720 Air 14.01 0.007 0 17.78 0.0095 11 01/25/02 FB012502 Field Blank 0 Air <7.0 n/a NA(=^> NA(=^> NA(=^> NA(=^> 01/25/02 TB012502 Trip Blank 0 Air <7.0 n/a NA® NA(=^> NA<=^> NA<=^>

Sampling Locations: Key: A: NE corner of West Broadway & Barclay M: Western end of Harrison St. at West St. * Sample volume (liters) is below recommended B: SE corner of Church & Dey St. (on tree next to bulkhead) limit for the TEM method; volume is based on C: Trinity (a.k.a. Church) & Liberty Ml : West St. - 50 yards south of Harrison St. at bulkhead pump reading Cl: SW corner of Broadway & Liberty St. N: South side of Pier 25 (next to volleyball ct) ** Structure (S) is roughly equivalent to fiber (f) D: East end of Albany St. at Greenwich St. P: NE corner of South End Ave. & Albany *** Chrysotile E: Western end of Liberty St. at South End Ave Q: Barclay & West St. (center island) in **** Extremely low sample volume collected F: Northern median strip of Vesey & West St proximity to USCG command post G: Church and Duane St. R: TAGA Bus Location NA<’’ - Not analyzed due to overloading of H: South side of Chase Manhattan Plaza at Pine St. S: Rector & South End particulates I: SE corner of Wall St. & Broadway T: Pier 6 Heliport NA<^’ - Not analyzed for TEM J: NE corner of Warren & West St. U: Pier 6 Exit 2 n/a - Not applicable K: West St. & Albany in median strip V: Pier 6 Bus Sign NR - Not requested L: On walkway toward North Park rec area (north side W: Wash Tent Common Area NS - Sample not submitted o of Suyvesant High), access to TAGA bus area H l"^ [.J

S NiOSH 7400: Fiber Anaiysis of Air Samples via NiOSH 7400, Revision 3, issue 2, 8/15/94 o Asbestos Fiber Anaiysis by Transmission Eiectron Microscopy (TEM) EPA 40CFR Part 763 (AHERA) o Standard criteria: EPA 40CFR Part 763 (AHERA); 0,01 tiber/cc (PCM), 70 S/mm^, volume 1200 L, for 25 mm filter (TEM) o Io o Ln [.J

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NYC-WTC_000231726