NYC-WTC_000204941

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o o co NYC Response Asbestos Air Sampling Results at Fixed Locations Data Validation Date: 11/10/01 ■D o Sampling Date and Time; 11/09/01 0001 to 1200 c o CT o PCM by NIOSH 7400 TEM AHERA) ro o' o Sampling Sampling Sample Structures (#) ■D Date Sample No. Location Volume* Matrix f/mm^ f/cc Q.5/J-5/J 5u S/mm’ S~f/cc** O co 3. 11/09/01 RST-00454 L 720 Air 8.92 0.005 0 0 <8.82 <0.0047 03 ro 11/09/01 RST-00455 Ml 708 Air <7.0 <0.004 0 0 <8.82 <0.0048 O 11/09/01 RST-00456 N 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 o o 11/09/01 RST-00457 J 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 c 11/09/01 RST-00458 F 720 Air 8.28 0.004 0 0 <8.82 <0.0047 3 CD 11/09/01 RST-00459 A 720 Air 8.92 0.005 0 0 <8.82 <0.0047 11/09/01 RST-00460 B 720 Air 17.83 0.0095 1*** 0 8.82 0.0047 11/09/01 RST-00461 Cl 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/09/01 RST-00462 H 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/09/01 RST-00463 I 720 Air 11.46 0.006 0 0 <8.82 <0.0047 11/09/01 RST-00464 D 684 Air <7.0 <0.004 1“* 0 8.82 0.0050 11/09/01 RST-00465 K 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/09/01 RST-00466 T 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/09/01 RST-00467 T-Duplicate 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/09/01 RST-00468 U 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/09/01 RST-00469 V 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/09/01 RST-00470 S 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/09/01 RST-00471 P 720 Air <7.0 <0.004 0 0 <8.82 <0.0047 11/09/01 RST-00472 E 720 Air 7.64 0.004 0 0 <8.82 <0.0047 11/09/01 RST-00473 Q 720 Air 7.64 0.004 0 0 <8.82 <0.0047 11/09/01 FB110901 Field Blank 0 Air <7.0 n/a NA*^> NA<"' NA*2’ NA<"> 11/09/01 TB110901 Trip Blank 0 Air <7.0 n/a NA*2' 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 Cl; SW comer 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 overioading 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 comer 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 L: On walkway toward North Park rec area (north side to 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: EPA40CFR Part 763 (AHERA): 0.01 fiber/cc (PCM), 70 S/mm^ volume 1200 L, for 25 mm filter (TEM) o

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