skip navigational links Occupational Safety & Health Administration DOL.gov OSHA.gov DOL.gov
www.OSHA.gov
  
OSHA Asbestos Monitoring Data at the WTC Site


9/13 ASBESTOS SAMPLING DATA


Personal air sampling data throughout selected areas of the Financial District. Levels range between 0.003 f/cc and 0.004 f/cc.

Permissible Exposure Limit (PEL): 0.1 fiber/cubic centimeter as an 8-hr time weighted average

Excursion Limit: 1 fiber/cubic centimeter over a 30-minute period.
Area Location # of Samples Fibers /cc
D4 32 Old Slip - Daiwa Securities 5 0.003-0.004
C3 Hanover Square Area 2 0.003-0.004
D4 55 Water Street 1 0.003
C3 Old Slip/Wall Street 1 0.003
C4 Water/Broad Street 1 0.003
D4 Old Slip/Water Street 1 0.004


9/14 WTC OSHA ASBESTOS SAMPLING DATA


Personal air sampling data throughout selected areas of the Financial District and area north of WTC. Levels range between 0.003 and 0.009 f/cc.

Permissible Exposure Limit (PEL): 0.1 fiber/cubic centimeter as an 8-hr time weighted average

Excursion Limit: 1 fiber/cubic centimeter over a 30-minute period.
Area Location # of Samples Fibers /cc
C2-B2 City Hall to WTC 1 0.006
B2-B3 Broadway to Rector Street 1 0.015
A1-B1 Greenwich to Barclay Street 1 0.024
B2-B3 Broadway to WTC 1 0.005


9/15 WTC OSHA ASBESTOS SAMPLING DATA


Personal air sampling data throughout selected areas of the Financial District. Levels range between 0.0011f/cc and 0.062 f/cc

Permissible Exposure Limit (PEL): 0.1 fiber/cubic centimeter as an 8-hr time weighted average

Excursion Limit: 1 fiber/cubic centimeter over a 30-minute period.
Area Location # of Samples Fibers/cc
A2 West &Vesey Streets to Hot Zone 1 0.0014
A2 West &Vesey Streets to Hot Zone 1 0.022
A1-B1 Warren & Park & btwn West & Church 1 0.0049
A2 MIA Area-AMX bldg &WTC6 1 0.003
A1-B1 Warren & Park & btwn West & Church 1 0.013
B3-C3-C4 Wall, S. William, Pearl, State Streets 4 <0.026-0.051
B3-C3-C4 B'way &Wall + S. William & Mill Lane, ... 4 <0.026-0.035
B2-B3 Fulton & B'way 3 <0.024-0.069
B2-B3 Fulton & B'way + Pine & B'way 1 0.0048
C2-C3-D3 Wall & Hanover + Fulton & FDR S. + Park Row & Frankfort 1 0.0032
B1-B3 B'way & Leonard & Liberty 1 0.0045


9/16 WTC OSHA ASBESTOS SAMPLING DATA


Personal air sampling data throughout selected areas of the Financial District. Levels range between 0.003/cc and 0.009 f/cc

Permissible Exposure Limit (PEL): 0.1 fiber/cubic centimeter as an 8-hr time weighted average

Excursion Limit: 1 fiber/cubic centimeter over a 30-minute period.
Area Location # of Samples Fibers/cc
C4-D2-D3 Water-Wall Beekman-Pearl Streets... 1 0.006
C3 Platt & Gold 1 0.004
D4-D5 William & Water Streets Exchange Area 1 0.004
A1-A2 World Financial Center Chambers - Vesey 1 0.009
A2 West & Barclay Streets 1 0.006
C3-C4 Exchange Place - New Street 1 0.009
C3 Exchange Place & William Street 1 <0.003


9/17 WTC OSHA ASBESTOS SAMPLING DATA


Permissible exposure Limit (PEL) : 0.1 fiber/cubic centimeter as an 8-hr time weighted average

Excursion limit: 1 fiber/cubic centimeter over a 30- minute period.
Area Location # Samples Sample
Type
fibers /cc TEM
fibers/cc
D2 South st. - Pearl & Water st. 2 Personal 0.003 none
B3 B'way-Rector-Trinity-Church 1 P <0.004 none
B2 Park-B'way 3 P 0.009-0.015 none
B3 Liberty-B'way 2 P 0.009-0.025 none
B3 Rector-B'way 1 P <0.012 none
C3 Broad-Exchange 1 P <0.036 none
B2 WTC7-5Vesey 1 P 0.004 none
B2 WB'way-Vesey-Church 1 P 0.010 none
B2-B3 Church-Vesey-Cedar-West-Liber 1 P 0.015 none
A2 West-Vesey-WTC1-WTC6 3 P <0.004-0.007 none


HOT ZONE LEVELS RANGE: 3 samples - 0.004f/cc-0.015f/cc

WARM ZONE LEVELS RANGE: 6 samples - <0.004f/cc-0.015f/cc

FINANCIAL DISTRICT LEVELS RANGE: 7samples - 0.003f/cc-0.036f/cc

BULK SAMPLE RESULTS: None


9/18 WTC OSHA ASBESTOS SAMPLING DATA

Permissible exposure Limit (PEL) : 0.1 fiber/cubic centimeter as an 8-hr time weighted average

Excursion limit: 1 fiber/cubic centimeter over a 30- minute period.
Area Location Sample
Type
fibers/cc TEM
fibers/cc
A2-B3 West-Vesey-Albany-Gr'wich Personal 0.027 none
A2-B3 West-Vesey-Albany-Gr'wich P 0.021 none
B4 B'way-Morris P 0.012 none
A2-B2 WB'way-Murray-West P 0.040 none
B2C2B3C3 WB'way-Barclay-Church-William P 0.041 none
B1-B3 Church-Thomas-B'way-Cortland P 0.031 none
C4 New-Beaver Area <0.005 none
B3 B'way-Rector-Wall-Church A 0.019 none
A2 Light Post@West-Barclay A 0.034 none
A2 Bldg 4-WFC Annex-Food Ct. A 0.069 none
A2 Bldg 4-WFC Annex-Food Ct. A 0.027 none
A2 WFC4-foot bridge-Boat Area A 0.012 none
A2 West-Vesey-AMX Bldg. A 0.014 none
B2 Church-Vesey A 0.023 none
B2 SWCorner 90 Church A 0.015 none
A1 NECorner PS89 A 0.012 none
B2 Church-Vesey A 0.015 none
B2 90 Church A 0.017 none

SUMMARY

Zone # Air Samples # Bulk Samples fibers/cc (f/cc)
Hot 9 0 0.004-0.027
Warm 5 0 0.003-0.017
Financial District 4 0 <0.003-0.027


9/19 WTC OSHA ASBESTOS SAMPLING DATA

Permissible exposure Limit (PEL) : 0.1 fiber/cubic centimeter as an 8-hr time weighted average

Excursion limit: 1 fiber/cubic centimeter over a 30- minute period.
Area Location Sample
Type
fibers/cc TEM
fibers/cc
B2 Church-Park-G'wich-Murray-B'clay Personal 0.0038 <0.005
B2 Church-Park-G'wich-PkSq-B'clay-Vesey P 0.029 <0.006
A3 Albany-G'wich-Spedestrian Bridge P 0.011 <0.003
B2-B3 Church-Vesey-WB'way-B'clay-Albany-G'wich P 0.018 <0.004
A3-B3 WB'way-B'clay-Church-G'wich-Liberty-Albany-Cedar P 0.014 <0.004
A2-B2 Murray-B'clay-PS89-West-Chambers-Liberty P 0.009 <0.003
A3 Liberty-West-Albany-G'wich-Spedestrian Br'ge P 0.011 <0.003
A3-B3 B'wy-B'clay-Church-G'wich-Lb'ty-Albany-Cedar P 0.014 <0.004
A2 NE corner G'wich-Park A 0.009 <0.005
A2 NE corner B'clay-West A 0.018 <0.006
B3 SE corner Thames-Trinity A 0.017 <0.004
A2 West-Vesey Toll Booth A 0.007 <0.005
A3 West st. under South Gate A 0.008 <0.004
A3 Albany-West (median) A 0.007 <0.004
B2 SE corner 90 Church st. A 0.020 <0.008
A3 Liberty-West A 0.009 <0.004


9/19 SUMMARY

Zone # Air Samples # Bulk Samples fibers/cc
Hot 8 0 0.007-0.018
Warm 4 0 0.007-0.014
Financial District 6 0 0.007-0.018


9/20 WTC OSHA ASBESTOS SAMPLING DATA


Permissible exposure Limit (PEL) : 0.1 fiber/cubic centimeter as an 8-hr time weighted average

Excursion limit: 1 fiber/cubic centimeter over a 30- minute period.
Area Location Sample Type fibers/cc TEM
fibers/cc
B3 C3 Bwy toPine Nassau toCedar, Bwy,N to Liberty St, Nassau to Maiden Lane P <0.005 <0.005
A3 B3 West St to Albany Albany to LibertySt Liberty to Washington P .024-.027 <0.006-0.010
A3 B3 West St to Albany Albany to Liberty Liberty to Washington P .008-.035 <0.005
A3 B3 West to Albany Albany to Liberty Liberty to Washington P 0.012-0.027 <.004-<.008
A3 West & Liberty (debris pile -on firemen) P *overload only TEM provided <0.005
B3 Liberty & Washington Liberty &West (debris pile) P 0.037 <0.005
A3 Liberty & West St Stationed at S. Gate House P 0.029 0.007
C2 Corner John St & Bw'y A 0.009 <0.005
A2 West St & Barclay (SW corner) A 0.005  
B3 Center of Liberty St A 0.019 <0.012
B2 WTC-mall entrance Flagpole betw WTC4 &5 A 0.027  
A1 SW corner of West & Chambers Front of PS89 A 0.005  
A2 Corner Vesey & West (toll booth ) A 0.008 <0.004
B2 NW corner of Church & Vesey (subway entrance) A 0.009  
A3 SW corner of Liberty &West St (by south bridge) A 0.016 <0.004

9/20 SUMMARY

Zone # Air Samples # Bulk Samples fibers/cc
Hot 4 2 0.005-0.027
Warm 1 1 0.005
Financial District 13 0 <0.005-0.037


9/21 WTC OSHA ASBESTOS SAMPLING DATA

Permissible exposure Limit (PEL) : 0.1 fiber/cubic centimeter as an 8-hr time weighted average

Excursion limit: 1 fiber/cubic centimeter over a 30- minute period.
Area [Sample#]
Location
Sample
Type
fibers/cc TEM
fibers/cc
B3 [101] Liberty-Btw West &Church Personal 0.036 <0.004
B3 [102] Liberty-Btw West &Church P 0.048 <0.005
B3 [103] Liberty-Btw West &Church P 0.080 <0.004
B3 [Buff-1] North of Liberty-West P 0.007  
B3 [Buff-3] SW of Rubble Pile-Liberty-West P 0.032  
B3 [Buff4] N of Liberty & West-75ft from Pile P overloaded  
A2-B2 [TTO1] North perimeter of pile-West-G'wich-Church on Vesey P 0.014 <0.006
A2-B2 [TT02] North perimeter of pile-West-G'wich-Church on Vesey P 0.015 0.015
A2-B2 [TT03] North perimeter of pile-West-G'wich-Church on Vesey P 0.010 <0.007
A2-B2 [TT04] North perimeter of pile-West-G'wich-Church on Vesey P <0.019  
A2 [TT05] Employee holding/cutting steel in rubble pile P overloaded  
A2 [TT06] Crane Operator P 0.015 <0.009
A2 [TT07] ee in bucket burning over the rubble pile P overloaded <0.007
A2 [TT09] Crane Operator in Cab P <0.005  
A2-B2 [TT10] North perimeter of pile-West-G'wich-Church on Vesey P 0.018 <0.006
A2 [TT11] Crane Operator P 0.086 <0.009
A2-B2 [TT12] North perimeter of pile-West-G'wich-Church on Vesey P <0.010  
B3 [Buff5] S.of WTC tower & Bldg #4 P <0.006  
A1 [100] light post in N corner PS 89 Area <0.003  
B3 [Buff-2]N of West & Liberty. Edge of Rubble Pile A 0.059  
B2 [A1AO92101] SW corner of B'clay-Church @Subway entrance A 0.006 <0.004
B2 [A2AO92101] SE corner B'clay-WB'way @ traffic light A <0.004  
B2 [A3AO92101]NWcorner Church-Vesey @ Subway entrance A <0.005  
C4 [HHAO21-2] corner of Water-Vietnam Vet. Plaza A <0.006  
C4 [HHAO21-2] corner of New-Beaver A <0.05  
D3 [HHAO21-3] Wall-Water A 0.005 <0.004
B3 [HHA021-4] Rector-B'way A <0.005  
B4 [HHAO21-5] Morris-B'way A 0.006 <0.005
C2 [Syra-1] W Fulton-Church A <0.004  
B2 [Syra-2] Dey-Church A 0.008 <0.004
B3 [Syra-3] B'way-Liberty A <0.004  
B2 [Syra4] West Liberty-Church A 0.009 <0.004
B3 [Syra5] W Cortland-Church A 0.007 <.003
B3 [TT08] Church-Dey- East side of rubble pile A <0.006  
A2 [Syr8] Off Beam @ Hot Zone Bulk ND  
A2 [Syr9] Dust from Hole B <1% Chrysotile  
B2 [Syr 10] Church-Dey-WTC Bldg # 5 B ND  

9/21 SUMMARY

Zone # Air Samples # Bulk Samples fibers/cc
Hot 21 3 0.005-0.086
Warm 5 0 0.003-0.006
Financial District 8 0 0.004-0.05



9/23 WTC OSHA ASBESTOS SAMPLING DATA

Permissible exposure Limit (PEL) : 0.1 fiber/cubic centimeter as an 8-hr time weighted average

Excursion limit: 1 fiber/cubic centimeter over a 30- minute period.
Area [Sample#]
Location/task
Sample
Type
fibers/cc TEM
fibers/cc
B2 [DEA1] NW Bldg 6 Personal 0.0048 <0.006
A2 [DEA2] Bobcat operator NW corner btwn Tower 1-Bldg 6 P 0.114 <0.010
A2 [BDO1] walking through hot zone P 0.009 <0.003
B3 [Syra28] wtcsyjl923-4 Liberty Street P ND  
A3 [A788220] Liberty-West Area 0.007 <0.005
A3 [A788210] Liberty-West A 0.032 <0.009
A3 [Syra32] WTCsydl923-1 Liberty-West A ND  

9/23 SUMMARY

Zone # Air Samples # Bulk Samples fibers/cc
Hot 7 0 ND-0.114
Warm 0 0  


9/24 WTC OSHA ASBESTOS SAMPLING DATA

Permissible exposure Limit (PEL) : 0.1 fiber/cubic centimeter as an 8-hr time weighted average

Excursion limit: 1 fiber/cubic centimeter over a 30- minute period.
Area [Sample#]
Location/task
Sample
Type
Duration
(mins)
fibers/cc TEM
(f/cc)
B2 (hot) [alaroeal] SE corner @ rubble pile NW Bldg 6 Personal 210 Overloaded  
B2 (warm) [hhab924-1] Church-Dey A 245 ND  

9/24 SUMMARY

Zone # Air Samples # Bulk Samples fibers/cc
Hot 1 0 0.02
Warm 1 0 ND


9/25 WTC OSHA ASBESTOS SAMPLING DATA

Permissible exposure Limit (PEL) : 0.1 fiber/cubic centimeter as an 8-hr time weighted average

Excursion limit: 1 fiber/cubic centimeter over a 30- minute period.
Area [Sample#]
Location/task
Sample
Type
Duration
(mins)
fibers/cc TEM
(f/cc)
B3 (VOID) [alsd925-5] Church-Liberty Operating Engineer Personal 169 overloaded  
B3 (Hot) [TCCHJT925-1] Church-Liberty Laborer-overseeing loading of truck P 260 0.0990  
A3 (Hot) [CHBCJ925-04] Liberty - West Area 140 ND  
B3

(Hot)
[TCCHJT925-3] Church-Liberty A 240 0.0630  

9/25 SUMMARY

Zone # Air Samples #Bulk Sample fibers/cc
Hot 3 0 ND-0.099
Warm 0 0  


9/26 WTC OSHA ASBESTOS SAMPLING DATA


Permissible exposure Limit (PEL) : 0.1 fiber/cubic centimeter as an 8-hr time weighted average

Excursion limit: 1 fiber/cubic centimeter over a 30- minute period.
Area [Sample#]
Location/task
Sample
Type
Duration (mins) fibers/cc TEM
(f/cc)
A2 (Hot) [WTCalsd926-4] WTC #1 top of the pile Grappler Operator P 160 .0300  
B3 (Hot) [WTCalsd926-3] SD926-3 Church-Liberty WTC#4 on thepile Back hoe Operator P 265 0.120 0.002
B2 (Hot) [WTCjaodd926-2] plaza - on the rubble pile Iron worker P 190 0.0680  
B2 (Hot) [wtcjaodd926-1] plaza on the rubble pile Iron worker P 195 0.1400 0.008
B2 (Hot) [TR926-2] plaza P 160 0.0500  
B2 (Hot) [TCPRTR926-1] plaza P 155 0.0150  
A2 (Hot) [jard926-010] Winter Garden rubble pile P 275 0.0450  
A2 (Hot) [ccthmhh0926-1] WTC#1 -WinterGarden P 345 0.0680  
A3 (Hot) [chbcj092606] B   ND  

9/26 SUMMARY

Zone # Air Samples # Bulk Samples fibers/cc
Hot 8 1 0.15-0.14
Warm 0 0  
 
Back to Top Back to Top www.osha.gov www.dol.gov

Contact Us | Freedom of Information Act | Information Quality | Customer Survey
Privacy and Security Statement | Disclaimers
Occupational Safety & Health Administration
200 Constitution Avenue, NW
Washington, DC 20210