NYC-WTC_000205491

NYC 9/11 Public Portal Document

US Department of Labor/OSHA WTC Air Sampling Activity All sampling data with severity >0 excluding all blanks (Including Area and Personal Samples only)

From 05/06/02 To 05/15/02 ; sorted by severity

Date Sample ANALYTE TASK/ Sampled LAB# Submission# DESCRIPTION Type Area Location OPERATION Description TIME UOM RESULT TWA SEVERITY

5/8/02 P19948 W7926 Silica, Crystalline P SOUTHEAST TULLY EROC, Machine 480 % 9.5 0.45 0.5172181 Quartz, Respirable Operator, Front Dust End Loader, 6 WTC, 4th Floor, demolition of wall 5/9/02 P20029 W8158 Silica, Crystalline P SOUTHEAST TULLY Tully, Sevelta, 182 % 27 0.16 0.4525652 Quartz, Respirable Laborer, working Dust near others operating jackhammer, digging and cutting rebar. Ee did misc. tasks. 5/8/02 P19953 W8103 Silica, Crystalline P OTHER WTC Evergreen 329 % 4.4 0.6 0.3821920 Quartz, Respirable Recycling of Dust Corona, General Laborer, ee removing metal debris from old subway tunnel between 4 and 5 WTC. 5/7/02 P19903 W8146 Silica, Crystalline P SOUTHEAST TULLY 206 % 55 0.073 0.29387 Quartz, Respirable Dust 5/7/02 PI9902 W8099 Silica, Crystalline P SOUTHEAST TULLY Tully, General 269 X 0 0.073 0.29387 Quartz, Respirable Laborer, ee Dust removes larger pieces of debris prior to spreading material, bldg 4. o 5/10/02 P20091 0510RR05 Iron Oxide Fume P SOUTHEAST TULLY TORCH CUTTER Tully, Welder, 4 449 M 2.3987689 2.4 0.2398769 H WTC, torch cutting a variety to of metal. s 5/7/02 PI9907 W8138 Silica, Crystalline P SOUTHEAST TULLY EROC, Heavy 502 % 8.6 0.22 0.2372393 o Quartz. Respirable Duty Equipment o Dust Operator, l°i removing debris o o to CO Wednesday, May IS, 2002 WTCSamplingMaslerO513.mdb Page 2 of S co

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NYC-WTC_000205492