NYC 9/11 Public Portal Document
Sample Sample Name Last 4 #'s Duration
Result f/cc
Date Number Last, First of SS# IType of Activity (min.)
02/20/02 02P Sachowski, David entire building access 30 0.0654
02/20/02 04P Sachowski, David entire building access 120 0.0139
02/20/02 12P Sachowski, David entire building access 180 0.0380
02/20/02 17P Sachowski, David entire building access 160 0.0390
` Total Duration Sampled (min.) 490
Short Term Exposure Limit (STEL) 0.0654
8 hr. Time Weighted Average (TWA) 0.0348
02/20/02 01P Lewis, Leonard entire building access 30 0.1144
02/20/02 03P Lewis, Leonard entire building access 120 0.0147
02/20/02 11P Lewis, Leonard entire building access 180 0.0579
02/20/02 16P Lewis, Leonard entire building access 160 0.0397
Total Duration Sampled (min.) 490
Short Term Exposure Limit (STEL) 0.1144
8 hr. Time Weighted Average (TWA) 0.0458
02/20/02 06P Soto, Victor inside building, lobby to 20th floor 30 0.0360
02/20/02 08P Soto, Victor PII inside building, lobby to 20th floor 120 0.0204
02/20/02 14P Soto, Victor inside building, lobby to 20th floor 190 0.0091
Total Duration Sampled (min.) 340
Short Term Exposure Limit (STEL) 0.0360
8 hr. Time Weighted Average (TWA) 0.0110
02/20/02 05P Carlsen, Michael inside building, lobby to 20th floor 30 0.0392
02/20/02 07P Carlsen, Michael inside building, lobby to 20th floor 120 0.0229
02/20/02 13P Carlsen, Michael inside building, lobby to 20th floor 190 0.0140
Total Duration Sampled (min.) 340
Short Term Exposure Limit (STEL) 0.0392
8 hr. Time Weighted Average (TWA) 0.0137
02/20/02 09P Maddox, Sal entire building access 30 0.0360
02/20/02 10P Maddox, Sal , entire building access 120 0.0090
02/20/02 15P Maddox, Sal entire building access 130 0.0086
02/20/02 118P Maddox, Sal entire building access 160 0.0885
Total Duration Sampled (min.) 440
Short Term Exposure Limit (STEL) 0.0360
8 hr. Time Weighted Average (TWA) 0.0363
(c) Permissible exposure limits (PELS)
(c)(2) Excursion limit. The employer shall ensure that no employee is exposed to an airborne concentration of asbestos
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.
(c)(2) Excursion limit. The employer shall ensure that no employee is exposed to an airborne concentration of asbestos
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.
NYC-WTC 000103492
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