OSHA air sample results chain of custody, 55 Church Street

NYC 9/11 Public Portal Document Sample I Sample IName Last 4 #'s Duration Date Number Last, First of SS# IType of Activity Result f/cc (min.) 02/19/02 03 McTough, Danny scaffold entire 180 0.0183 02/19/02 09 - McTough, Danny scaffold entire 150 0.0094 Total Duration Sampled (min.) 330 8 hr. Time Weighted Average (TWA) 0.0098 02/19/02 02 Hughu , J. scaffold entire 180 0.0095 02/19/02 08 Hughus, J. scaffold entire 150 0.0086 Total Duration Sampled (min.) 330 8 hr. Time Weighted Average (TWA) 0.0063 02/19/02 04 Byine, R. scaffold entire 180 0.0099 02/19/02 10 Byine, R. scaffold entire P11 Total Duration Sampled (min.) 150 330 0.0130

8 hr. Time Weighted Average (TWA) 0.0078 02/19/02 01 Salerno, J. scaffold entire 180 0.0107 02/19/02 07 Salerno, J. scaffold entire 150 0.0092 Total Duration Sampled (min.) 330 8 hr. Time Weighted Average (TWA) 0.0069 02/19/02 05 Puntillo, J. Engineer 30 0.0360 02/19/02 06 Puntillo, J. Engineer 120 0.0102 02/19/02 11 Puntillo, J. Engineer 180 0.0112 .............. Total Duration Sampled (min.) 330 Short Term Exposure Limit (STEL) 0.0360 8 hr. Time Weighted Average (TWA) 0.0090 ku) rulljilA5IUI Cxpusure UETIILS (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 000103494