NYC-WTC_000204941

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o o co § NYC Response

s o o KJ Asbestos Air Sampling Results at Fixed Locations Sampling Date and Time: 11/08/01 1201 to 2400

Sampling PCM by NIOSH 7400 TEM AHERA) Data Validation Date: 11/10/01 ■D c CT o' O Sampling Sample Structures (#) ■D -P- Date Sample No. Location Volume* Matrix f/mm" f/cc 0.5jiz - 5// 5// S/mm" S-f/cc** O CO 3. 11/08/01 RST-00434 L 720 Air 11.46 0.006 0 0 <8.82 <0.0047 03 11/08/01 RST-00435 Ml 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 O 11/08/01 RST-00436 N 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 o o 11/08/01 RST-00437 J 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 c 11/08/01 RST-00448 F 720 Air 11.46 0.006 0 0 <8.82 <0.0047 3 CD 11/08/01 RST-00439 Q 720 Air 7.64 0.004 0 0 <8.82 <0.0047 11/08/01 RST-00440 A 720 Air 11.46 0.006 0 0 <8.82 <0.0047 11/08/01 RST-00441 B 720 Air 19.11 0.010 0 0 <8.82 <0.0047 11/08/01 RST-00442 Cl 720 Air 7.64 0.004 0 0 <8.82 <0.0047 11/08/01 RST-00443 H 41 Air <7.0 <0.066 0 0 <7.94 <0.0745 11/08/01 RST-00444 I 720 Air 12.74 0.007 0 0 <8.82 <0.0047 11/08/01 RST-00445 l-Duplicate 720 Air 15.29 0.008 0 0 <8.82 <0.0047 11/08/01 RST-00447 K 720 Air 10.19 0.005 0 0 <8.82 <0.0047 11/08/01 RST-00448 T 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/08/01 RST-00449 U 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/08/01 RST-00450 V 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/08/01 RST-00451 S 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/08/01 RST-00452 P 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/08/01 RST-00453 E 720 Air 10.19 0.005 0 0 <8.82 <0.0047 11/08/01 RST-00446 D 720 Air 7.64 0.004 0 0 <8.82 <0.0047 11/08/01 FB110901 Field Blank 0 Air <7.0 n/a NA’"’ NA’"’ "na®" NA'2> 11/08/01 TB110901 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 C: Trinity (a.k.a. Church) & Liberty Ml ; West St. - 50 yards south of Harrison St. at bulkhead on pump reading C1: 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 comer of South End Ave. & Albany *** Chrysotile E: Western end of Liberty St. at South End Ave Q: Barclay & West St. (center island) in NA’’’ - Not analyzed due to overloading of F: Northern median strip of Vesey & West St proximity to USCG command post particulates G: Church and Duane St. R: TAGA Bus Location NA’"’ - Not analyzed for TEM H: South side of Chase Manhattan Plaza at Pine St. S: Rector & South End n/a - Not applicable I: SE corner of Wall St. & Broadway T: Pier 6 Heliport NR - Not requested o J: NE corner of Warren & West St. U: Pier 6 Exit 2 NS - Sample not submitted H K: West St. & Albany in median strip V: Pier 6 Bus Sign K L: On walkway toward North Park rec area (north side I CD of Suyvesant High), access to TAGA bus area

o NIOSH 7400: Fiber Analysis of Air Samples via NIOSH 7400, Revision 3, Issue 2, 8/15/94 o /Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) EPA 40CFR Part 763 (AHERA) o I Standard criteria: EPA 40CFR Part 763 (AHERA): 0.01 fiber/cc (PCM), 70 S/mm^ volume 1200 L, for 25 mm filter (TEM) 21 o CD CD FL-11-08-01-pm o to