Air sampling correspondence, 20 Dey Street, Feb 2002

NYC 9/11 Public Portal Document

Millenium Hilton Hotel Sample I Sample Name I Last 4 #'s I Duration Result f/cc Date Number Last, First of SS# IType of Activity (min.) 02P Sachowski, David 8859 entire building access 30 0.1275 02/19/02 04P Sachowski, David 8859 entire building access 120 0.0120 02/19/02 02/19/02 10P Sachowski, David 8859 entire building access 120 0.0145 14P Sachowski, David 8859 entire building access 220 0.0139 02/19/02 Total Duration Sampled (min.) 490 Short Term Exposure Limit (STEL) 0.1275 8 hr. Time Weighted Average (TWA) 0.0210 01P Lewis, Leonard 6282 entire building access 30 0.0850 02/19/02 03P Lewis, Leonard 6282 entire building access 120 0.0177 02/19/02 09P Lewis, Leonard 6282 entire building access 120 0.0175 02/19/02 13P Lewis, Leonard 6282 entire building access 220 0.0124 02/19/02 Total Duration Sampled (min.) 490 Short Term Exposure Limit (STEL) 0.0850 8 hr. Time Weighted Average (TWA) 0.0198 05P Soto, Victor 3393 Windows Delivery, Floors 18 - 22 30 0.0654 02/19/02 07P Soto, Victor 3393 Windows Delivery, Floors 18 - 22 120 0.0149 02/19/02 11P Soto, Victor 3393 Windows Delivery, Floors 18 - 22 150 0.0159 02/19/02 Total Duration Sampled (min.) 300 Short Term Exposure Limit (STEL) 0.0654 8 hr. Time Weighted Average (TWA) 0.0128 06P Carlsen, Michael 3308 Windows Delivery, Floors 18 - 22 30 0.0490 02/19/02 02/19/02 08P Carlsen, Michael 3308 Windows Delivery, Floors 18 - 22 120 0.0155 02119/02 12P Carlsen, Michael 3308 Windows Delivery, Floors 18 - 22 150 0.0132 Total Duration Sampled (min.) 300 Short Term Exposure Limit (STEL) 0.0490 8 hr. Time Weighted Average (TWA) 0.0111 02/19/02 03 McTough, Danny 2086 scaffold entire 180 0.0183 02/19/02 09 McTough, Danny 2086 scaffold entire 150 0.0094 Total Duration Sampled (min.) 330 8 hr. Time Weighted Average (TWA) 0.0098 02/19/02 02 Hughus, J. 5049 scaffold entire 180 0.0095 08 Hughus, J. 5049 scaffold entire 150 0.0086 02/19/02 Total Duration Sampled (min.) 330 8 hr. Time Weighted Average (TWA) 0.0063 02/19/02 04 Byine, R. 0599 scaffold entire 180 0.0099 02/19/02 10 Byine, R. 0599 scaffold entire 150 0.0130 Total Duration Sampled (min.) 330 8 hr. Time Weighted Average (TWA) 0.0078 02/19/02 01 Salerno, J. 5516 scaffold entire 180 0.0107 07 Salerno, J. 5516 scaffold entire 150 0.0092 02/19/02 Total Duration Sampled (min.) 330 8 hr. Time Weighted Average (TWA) 0.0069 02/19/02 05 Puntillo, J. 7246 Engineer 30 0.0360 06 Puntillo, J. 7246 Engineer 120 0.0102 02/19/02 11 Puntillo, J. 7246 Engineer 180 0.0112 02/19/02 Total Duration Sampled (min.) 330 Short Term Exposure Limit (STEL) 0.0360 8 hr. Time Weighted Average (TWA) 0.0090 (c) Permissible exposure limits (PELS) asbestos (c)(2) Excursion limit. The employer shall ensure that no employee is exposed to an airborne concentration of minutes, as in excess of 1.0 fiber per cubic centimeter of air (1 f/cc) as averaged over a sampling period of thirty (30) determined by the method prescribed in Appendix A to this section, or by an equivalent method. (c)(2) Excursion limit. The employer shall ensure that no employee is exposed to an airborne concentration of asbestos minutes, as in excess of 1.0 fiber per cubic centimeter of air (1 f/cc) as averaged over a sampling period of thirty (30) determined by the method prescribed in Appendix A to this section, or by an equivalent method.

NYC-WTC 000103877