NYC-WTC_000208423

NYC 9/11 Public Portal Document

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

Front 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

4/21/02 PI 9210 W8929 Silica. Crystalline A SOUTHEAST TULLY Cement Chipping WTC 6 497 % 18 3.4 6.8670849 Quartz, Respirable Dust 4/21/02 DI 5565 W8927 Silica, Crystalline A OTHER WTC Area Sample Filled w/ 486 % 8.7 1.3 1.3597263 Quartz, Respirable water Dust 4/21/02 DI 5568 W8906 Silica, Crystalline A OTHER WTC Area Sample Pier 26-So. 490 % 10 0.67 0.8071326 Quartz, Respirable Dust 4/21/02 DI 5564 W8719 Silica, Crystalline A OTHER WTC Area Sample Pier 26-No. 190 % 49 0.13 0.6588945 Quartz, Respirable Dust 4/15/02 PI 8944 S875 Silica, Crystalline P SOUTHWEST BOVIS EROC, Grappler 452 % 12 0.34 0.4734513 Quartz, Respirable Operator,north of Dust Liberty st, sorting area. 4/20/02 P19197 W6332 Silica, Crystalline A WEST AMEC 365 % 32 0.11 0.3715259 Quartz, Respirable Dust 4/21/02 PI 9207 W9025 Silica, Crystalline A NORTHWEST TURNER AREA SAMPLE 475 % 22 0.13 0.3059649 Quartz, Respirable Dust 4/20/02 PI 9196 W6317 Silica, Crystalline P NORTHWEST TURNER 419 % 22 0.074 0.1766027 Quartz, Respirable Dust 4/16/02 PI 8981 W2607 Silica, Crystalline P NORTHWEST TURNER DOCKBUILDER Turner/Nicholson, 440 % 8.6 0.15 0.1606061 Quartz, Respirable WTC6, driller, Dust drills concrete and removes it from Bl levels of WTC. o 4/16/02 D15487 0416RC03 Lead, inorganic (as Pb) P WEST AMEC 454 M 0.00746 0.0075 0.1492 H 4/16/02 PI 8977 0416KF02 Sulfuric Acid P NORTHWEST TURNER NY FIRE FDNY, raking 504 M 0.11 0.11 0.11 to DEPARTMENT spreadout debris south of bldg. 6 S pile. o 4/16/02 PI 8976 0416KF01 Sulfuric Acid P NORTHWEST TURNER NY FIRE FDNY, raking 477 M 0.063 0.063 0.063 o o DEPARTMENT debris south of I Bldg.6 pile. o o 4/16/02 DI 5488 0416RC04 Copper Fume (as Cu) P WEST AMEC TORCHCUTTER 450 M 0.0055494 0.0055 0.055494 co co co Monday, April 29, 2002 ffTCSamplingMasterO426. mdh Page 1 of 4 cn co cn

NYC-WTC_000208423