Air sampling correspondence, 20 Dey Street, Feb 2002

NYC 9/11 Public Portal Document

Millenium Hilton Hotel Duration Sample Sample Name Last 4 #'s Result f/cc (mmn.) Date Number Last, First of SS# Type of Activity 30 0.7809 02/13/02 1P Sachowski, David 8859 entire building access 150 0.0052 02/13/02 2P Sachowski, David 8859 entire building access 120 0.002 02/13/02 13P Sachowski, David 8859 entire building access 180 2 0.0964 02/13/02 19P Sachowski, David 8859 entire building access 480 Total Duration Sampled (min.) Short Term Exposure Limit (STEL) 0.7809 8 hr. Time Weighted Average (TWA) 0.0881 entire building access 30 0.6742 02/13/02 3P Lewis, Leonard 6282 entire building access 140 0.1028 02/13/02 4P Lewis, Leonard 6282 entire building access 120 0.0566 02/13/02 14P Lewis, Leonard 6282 entire building access 180 0.0473 02/13/02 18P Lewis, Leonard 6282 Total Duration Sampled (min.) 470 Short Term Exposure Limit (STEL) 0.6742 8 hr. Time Weighted Average (TWA) 0.1040 3393 15-20th Floor 30 0.0392 02/13/02 5P Soto, Victor 15-20th Floor 120 0.0714 02/13/02 6P Soto, Victor 3393 15-20th Floor 120 0.0129 02/13/02 16P Soto, Victor 3393 Total Duration Sampled (min.) 270 Short Term Exposure Limit (STEL) 0.0392 8 hr. Time Weighted Average (TWA) 0.0235 19-22nd Floor 30 0.0360 02/13/02 7P Carlsen, Michael 3308 19-22nd Floor 120 0.0572 02/13/02 8P Carlsen, Michael 3308 19-22nd Floor 120 0.0416 02/13/02 17P Carlsen, Michael 3308 Total Duration Sampled (min.) 270 Short Term Exposure Limit (STEL) 0.0360 8 hr. Time Weighted Average (TWA) 0.0270 entire building access 30 0.0360 02/13/02 9P Puntillo, Joe 7246 entire building access 120 0.0132 02/13/02 10P Puntillo, Joe 7246 Total Duration Sampled (min.) 150 Short Term Exposure Limit (STEL) 0.0360 8 hr. Time Weighted Average (TWA) 0.0056 scaffold entire 180 0.0649 02/13/02 lip McTough, Danny 2086 Total Duration Sampled (min.) 180 8 hr. Time Weighted Average (TWA) 0.0243 scaffold entire 180 0.0327 02/13/02 12P Salerno, Joe 5516 Total Duration Sampled (min.) 180 8 hr. Time Weighted Average (TWA) 0.0123 scaffold entire 180 0.0123 02/13/02 14P Dackow, George 5758 Total Duration Sampled (min.) 180 0.0046 8 hr. Time Weighted Average (TWA) (c) Permissible exposure limits (PELS) asbestos that no employee is exposed to an airborne concentration of (c)(2) Excursion limit. The employer shall ensure minutes, as (1 f/cc) as averaged over a sampling period of thirty (30) in excess of 1.0 fiber per cubic centimeter of air section, or by an equivalent method. determined by the method prescribed in Appendix A to this asbestos no employee is exposed to an airborne concentration of (c)(2) Excursion limit. The employer shall ensure that period of thirty (30) minutes, as f/cc) as averaged over a sampling in excess of 1.0 fiber per cubic centimeter of air (1 equivalent method. section, or by an determined by the method prescribed in Appendix A to this

NYC-WTC 000103867