OSHA Silica Air Sampling Data, WTC Site, April 2002

NYC 9/11 Public Portal Document

US Department of Labor/OSHA fVTC Air Sampling Activity AU sampling data with severity >0 excluding all blanks (Including Area and Personal Samples only) From 4/15/2002 To 4/21/2002 ; sorted by severity Date Sample ANALYTE TASK/ Sampled LAB # Submission # DESCRIPTION Type Area Location OPERATiON Description TIME UOM RESULT TWA SEVERITY

4/16/02 PI 8977 0416KF02 Hydrogen Chloride P NORTHWEST TURNER NY FIRE FDNY, raking 504 P 0.049 0.049 0.0098 DEPARTMENT spreadout debris south of bldg. 6 pile. 4/21/02 PI 9213 W8933 Silica, Crystalline A NORTHWEST TURNER AREA SAMPLE 514 X 0 0.034 0.0068666 Quartz, Respirable Dust 4/21/02 DI5567 W8715 Silica, Crystalline A OTHER WTC 467 X 0 0.032 0.0063920 Quartz, Respirable Dust 4/15/02 PI8984 W6035 Silica, Crystalline A SOUTHEAST TULLY AREA SAMPLE Tully, AREA, 475 % 0 0.03 0.0060819 Quartz, Respirable maintenance Dust area so of pump A east side of pit. 4/20/02 015573 W6711 Silica, Crystalline A MOYNIHAN MAUREE 425 X 0 0.021 0.0042105 Quartz, Respirable Dust 4/16/02 PI 8977 0416KF02 Nitric Acid P NORTHWEST TURNER NY FIRE FDNY, raking 504 P 0.008 0.008 0.004 DEPARTMENT spreadout debris south of bldg. 6 pile. 4/21/02 PI 9208 W8905 Silica, Crystalline A NORTHWEST TURNER AREA SAMPLE 513 X 0 0.015 0.0030323 Quartz, Respirable Dust 4/16/02 PI8976 0416KF01 Nitric Acid P NORTHWEST TURNER NY FIRE FDNY, raking 477 P 0.006 0.006 0.003 DEPARTMENT debris south of Bldg.6 pile. 4/16/02 P18976 0416KF01 Hydrogen Chloride P NORTHWEST TURNER NY FIRE FDNY. raking 477 P 0.009 0.009 0.0018 DEPARTMENT debris south of o Bldg.6 pile. 4/16/02 PI8976 0416KF01 Hydrogen Bromide P NORTHWEST TURNER NY FIRE FDNY, raking 477 P 0.001 0.001 0.0003333 DEPARTMENT debris south of to Bldg.6 pile. s o o o I o

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