WTC OSHA Asbestos Sampling Data for A2

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Permisissible 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.

DATE Location # of Samples Sample Type Fibers /cc
9/15 West & Vesey Streets to Hot Zone 1 Personal 0.0014
9/15 West & Vesey Streets to Hot Zone 1 Personal 0.022
9/15 MIA Area at AMX bldg & WTC6 1 Personal 0.003
9/16 West & Barclay Streets 1 Personal 0.006
9/16 World Financial Center at Vesey to Chambers 1 Personal 0.009


DATE Location # Samples Sample Type Fibers /cc TEM fibers/cc
9/17 West & Vesey to WTC1 to WTC6 3 Personal <0.004-0.007 none


DATE Location Sample Type Fibers/cc TEM fibers/cc
9/18 Light Post at West-Barclay Area 0.034 none
9/18 Bldg 4 to WFC Annex-Food Ct Area 0.069 none
9/18 Bldg 4 to WFC Annex-Food Ct Area 0.027 none
9/18 WFC4 to foot bridge to Boat Area Area 0.012 none
9/18 West & Vesey to AMX Bldg Area 0.014 none
9/18 West & Vesey to Albany & Greenwich Personal 0.027 none
9/18 West & Vesey to Albany & Greenwich Personal 0.021 none
9/18 West Broadway to Murray & West Personal 0.040 none
9/19 NE corner Greenwich & Park Area 0.009 <0.005
9/19 NE corner Barclay & West Area 0.018 <0.006
9/19 West & Vesey (Toll Booth) Area 0.007 <0.005
9/19 Murray to Barclay to PS89 to West & Chambers to Liberty Personal 0.009 <0.003
9/20 West St & Barclay (SW corner) Area 0.005  
9/20 Corner Vesey & West (toll booth ) Area 0.008 <0.004
9/21 Employee holding/cutting steel in rubble pile Personal overloaded  
9/21 Crane Operator Personal 0.015 <0.009
9/21 In bucket burning over the rubble pile Personal overloaded <0.007
9/21 Crane Operator in Cab Personal <0.005  
9/21 Crane Operator Personal 0.086 <0.009
9/21 Off Beam @ Hot Zone Bulk ND  
9/21 Dust from Hole Bulk <1% Chrysotile  
9/21 North perimeter of pile at West to Greenwich-Church & Vesey Personal 0.014 <0.006
9/21 North perimeter of pile at West to Greenwich-Church & Vesey Personal 0.015 0.015
9/21 North perimeter of pile at West to Greenwich-Church & Vesey Personal 0.01 <0.007
9/21 North perimeter of pile at West to Greenwich-Church & Vesey Personal <0.019  
9/21 North perimeter of pile at West to Greenwich-Church & Vesey Personal 0.018 <0.006
9/21 North perimeter of pile at West to Greenwich-Church & Vesey Personal <0.010  
9/23 Bobcat operator NW corner between Tower 1-Bldg 6 Personal 0.114 <0.010
9/23 Walking through hot zone Personal 0.009 <0.003


DATE [Sample#] Location/task Sample Type Duration (mins) Fibers/cc TEM (f/cc)
9/26 WTC #1 top of the pile Grappler Operator (Hot Zone) Personal 160 0.03  
9/26 Winter Garden rubble pile (Hot Zone) Personal 275 0.045  
9/26 WTC#1 to Winter Garden (Hot Zone) Personal 345 0.068