Text For Citation: 01 Item/Group: 011A Hazard:

29 CFR 1910.1018(c):Employee(s) were exposed to inorganic arsenic at concentrations greater than ten micrograms per cubic meter of air, averaged over an 8-hour period: a) Furnace Department: A blast loader driver was exposed to 19.1 �g/m^3 of inorganic arsenic for an 8-hour time weighted average (TWA) of 17 �g/m^3, approximately 1.73 times the OSHA-PEL of 10 �g/m^3. The exposure was derived from one sample collected over a 436-minute period on 4/6/2021. Zero exposure was assumed for the remaining 44-minutes. b) Furnace Department: A blast lead side operator was exposed to 32.2 �g/m^3 and 5.9 �g/m^3 of inorganic arsenic for an 8-hour TWA of 13 �g/m^3, approximately 1.31 times the OSHA-PEL of 10 �g/m^3. The exposure was derived from two samples collected over a 251-minute period on 4/6/2021. Zero exposure was assumed for the remaining 229-minutes. c) Refining Department: A kettle operator was exposed to 45.1 �g/m^3 and 2.9 �g/m^3 of inorganic arsenic for an 8-hour TWA of 19 �g/m^3, approximately 1.86 times the OSHA-PEL of 10 �g/m^3. The exposure was derived from two samples collected over a 466-minute period on4/6/2021. Zero exposure was assumed for the remaining 14-minutes. d) Refining Department: A refining lead operator was exposed to 29.1 �g/m^3 and 5.3 �g/m^3 of inorganic arsenic for an 8-hour TWA of 12 �g/m^3, approximately 1.22 times the OSHA-PEL of 10 �g/m^3. The exposure was derived from two samples collected over a 317-minute period on4/6/2021. Zero exposure was assumed for the remaining 163-minutes. e) Furnace Department: A blast loader operator was exposed to 13.9 �g/m^3 of inorganic arsenic for an 8-hour TWA of 13.6 �g/m^3, approximately 1.36 times the OSHA-PEL of 10 �g/m^3. The exposure was derived from one sample collected over a 468-minute period on 4/13/2021. Zero exposure was assumed for the remaining 12-minutes.