Air sampling correspondence, 20 Dey Street, Feb 2002

NYC 9/11 Public Portal Document

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Sample I Sample IName Last 4 #'s I Result f/cc of SS# IType of Activity (min.) Date I Number ILast, First Sachowski, David 8859 entire building access 30 0.1471 02/12/02 01P 02P Sachowski, David 8859 entire building access 120 0.0202 02/12/02 19P Sachowski, David 8859 entire building access 120 0.0155 02/12/02 Total Duration Sampled (min.) 270 Short Term Exposure Limit (STEL) 0.1471 8 hr. Time Weighted Average (TWA) 0.0181 Lewis, Leonard 6282 entire building access 30 0.1014 02/12/02 03P 04P Lewis, Leonard 6282 entire building access 120 0.0225 02/12/02 Total Duration Sampled (min.) 150 Short Term Exposure Limit (STEL) 0.1014 8 hr. Time Weighted Average (TWA) 0.0120 15P Soto, Victor 3393 entire building access 30 0.0392 02/12/02 16P Soto, Victor 3393 entire building access 240 0.0157 02/12/02 Total Duration Sampled (min.) 270 Short Term Exposure Limit (STEL) 0.0392 8 hr. Time Weighted Average (TWA) 0.0103 11P Carlsen, Michael 3308 entire building access 30 0.0523 02/12/02 12P Carlsen, Michael 3308 entire building access 240 0.0148 02/12/02 0.0416 Total Duration Sampled (min.) 270 Short Term Exposure Limit (STEL) 0.0523 8 hr. Time Weighted Average (TWA) 0.0107 07P Puntillo, Joe 7246 entire building access 30 0.0360 02/12/02 08P Puntillo, Joe 7246 entire building access 120 0.0097 02/12/02 Total Duration Sampled (min.) 150 Short Term Exposure Limit (STEL) 0.0360 8 hr. Time Weighted Average (TWA) 0.0047 09P McTough, Danny 2086 scaffold entire 30 0.0687 02/12/02 10P McTough, Danny 2086 scaffold entire 240 0.0119 02/12/02 Total Duration Sampled (min.) 270 Short Term Exposure Limit (STEL) 0.0687 8 hr. Time Weighted Average (TWA) 0.0102 Maddox, Sal 7331 scaffold entire 30 0.0490 02/12/02 05P Maddox, Sal 7331 scaffold entire 180 0.0103 02/12/02 06P 18P Maddox, Sal 7331 entire building access 90 0.0109 02/12/02 Total Duration Sampled (min.) 210 Short Term Exposure Limit (STEL) 0.0490 8 hr. Time Weighted Average (TWA) 0.0069 Millau, Julio 0071 scaffold entire 160 0.0093 02/12/02 17P Total Duration Sampled (min.) 160 8 hr. Time Weighted Average (TWA) 0.0031 13P Dackow, George 5758 scaffold entire 30 0.0425 02/12/02 14P Dackow, George 5758 scaffold entire 240 0.0110 02/12/02 Total Duration Sampled (min.) 30 Short Term Exposure Limit (STEL) 0.0031 8 hr. Time Weighted Average (TWA) 0.0027 (c) Permissible exposure limits concentration of asbestos (c)(2) Excursion limit. The employer shall ensure that no employee is exposed to an airborne (1 f/cc) as averaged over a sampling period of thirty (30) minutes, as in excess of 1.0 fiber per cubic centimeter of air determined by the method prescribed in Appendix A to this section, or by an equivalent method.

concentration of asbestos (c)(2) Excursion limit. The employer shall ensure that no employee is exposed to an airborne in excess of 1.0 fiber per cubic centimeter of air (1 f/cc) as averaged over a sampling period of thirty (30) minutes, as determined by the method prescribed in Appendix A to this section, or by an equivalent method.

jgt&PT NYC-WTC 000103864