NYC-WTC_000231876

NYC 9/11 Public Portal Document

NYC Response Asbestos Air Sampiing Resuits at Fixed Locations Date Validation Date; 03/01/2002 Sampiing Dale and Time: 2/28/20020001 to 1151

PCM by NiOSH 7400 ___________ TEM ( AHERA) PCM fibers Sampling Sampiing Sample Structures (#) Dats Sample No. Location Vo! urns* Matrix f/mm=^ f/cc G,5p - Sp 5|t S/mm" S~f/cc‘* 02/28/02 FB022802 Field Blank 0 Air <7.0 n/a NA»> NA7> NA<=> NA<"> 02/28/02 TB022802 Trip Blank 0 Air <7.0 n/a NA<” NA<” NA<=> NA<=> 02/28/02 TTW-00983 L f 093.75 Air <7.0 <0.002 0 0 <13.33 <0.0047 02/28/02 TTW-00984 Ml f 023.75 Air <7.0 <0.003 0 0 <13.33 <0.0050 02/28/02 TTW-00985 N 919.7 Air <7.0 <0.003 0 0 <11.43 <0.0048 02/28/02 TTW-00986 N-Dup 1127.1 Air <7.0 <0.002 0 0 <13.33 <0.0046 02/28/02 TTW-00987 J 1176 Air <7.0 <0.002 0 0 <13.33 <0.0044 02/28/02 TTW-00988 Q 1082.25 Air <7.0 <0.002 0 0 <13.33 <0.0047 02/28/02 TTW-00989 F 1139.25 Air 7.64 0.003 0 0 <13.33 <0.0045 6 02/28/02 TTW-00990 F-Dup 1011.5 Air <7.0 <0.003 0 0 <13.33 <0.0051 02/28/02 TTW-00991 B 1173.15 Air 7.01 0.002 0 0 <13.33 <0.0044 5.5 02/28/02 TTW-00992 C 1155.6 Air 7.64 0.003 0 0 <13.33 <0.0044 6 02/28/02 TTW-00993 D 914.6 Air 10.19 0.004 0 0 <11.43 <0.0048 8 02/28/02 TTW-00994 K 1046.1 Air <7.0 <0.003 0 0 <13.33 <0.0049 02/28/02 TTW-00995 U 656.7 Air <7.0 <0.004 0 0 <8.00 <0.0047 02/28/02 TTW-00996 V 1079.5 Air <7.0 <0.003 0 0 <13.33 <0.0048 02/28/02 TTW-00997 S 1077.25 Air <7.0 <0.002 0 0 <13.33 <0.0048 02/28/02 TTW-00998 E 1027.25 Air 11.46 0.004 0 0 <11.43 <0.0043 9 02/28/02 TTW-00999 W 1141 Air 11.46 0.004 0 0 <13.33 <0.0045 9 02/28/02 Air 30.57 0 0 <11.25 <0.0043 24 02/28/02 Air <7.0 <0.002 NA»> NA»> NA(^> NA(=^> 02/28/02 Air <7.0 <0.002 NA<^> NA7> NA<=> NA<">

No sample was taken for Location A due to pump fault.

Sampling Locations: Key; o A: NE corner of West Broadway & Barclay M: Western end of Harrison St. at West St. * Sample volumes (liters) are below B: SE corner of Church & Dey St. (on tree next to bulkhead) recommended limit for the TEM method; volume is 1^ C: Trinity (a.k.a. Church) & Liberty Ml : West St. - 50 yards south of Harrison St. at bulkhead based on pump reading o 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) m 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 E: Northern median strip of Vesey & West St proximity to USCG command post ***** Amosite o G: Church and Duane St. R: TAGA Bus Location NA<'’ - Not analyzed due to overloading of J] □0 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 'o > J: NE corner of Warren & West St. K: West St. & Albany in median strip U: Pier 6 Exit 2 V: Pier 6 Bus Sign n/a - Not applicable NR - Not requested z L: On walkway toward North Park rec area (north side W: Wash Tent Common Area NS - Sample not submitted z of Suyvesant High), access to TAGA bus area >

s c □0 NiOSH 7400; Fiber Analysis of Air Samples via NiOSH 7400, Revision 3, issue 2, 8/15/94 Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) EPA 4QCFR Part 763 (AHERAj Standard criteria; EPA 40CFR Part 763 (AHERA); 0.01 fiber/cc (PCM), 70 S/mm’, volume 1200 L, for 25 mm filter (TEM)

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NYC-WTC_000231876