Text For Citation: 01 Item/Group: 009A Hazard:

29 CFR 1915.1000(a)(2):Employee(s ) were exposed to airborne concentrations of iron oxide listed in Table Z, in excess of the 8-hour time weighted average (TWA) concentration of 10 milligrams per cubic meter (mg/m3): (a) Herbert C. Jackson; The employer did not ensure that employee(s) exposure to iron oxide did not exceed 10 milligrams per cubic meter (mg/m3)of air, as an 8-hour time weighted average (TWA). This violation occurred on March 23, 2016 where the employee was welding/torching/grinding in the tunnel entrance installing a door; the employee was exposed to iron oxide at an 8-hour TWA of 22.16 mg/m3 of air, approximately 2.22 times the permissible exposure limit of 10 mg/m3. Sampling was performed for 474 minutes during one shift. Zero exposure was assumed for the 6 minute period not sampled. (b) Herbert C. Jackson; The employer did not ensure that employee(s) exposure to iron oxide did not exceed 10 milligrams per cubic meter (mg/m3)of air, as an 8-hour time weighted average (TWA). This violation occurred on February 10, 2016 where the employee was welding in ballast tank #5; the employee was exposed to iron oxide at an 8-hour TWA of 13.75 mg/m3 of air, approximately 1.38 times the permissible exposure limit of 10 mg/m3. Sampling was performed for 329 minutes during one shift. Zero exposure was assumed for the 151 minute period not sampled. (c) Herbert C. Jackson; The employer did not ensure that employee(s) exposure to iron oxide did not exceed 10 milligrams per cubic meter (mg/m3)of air, as an 8-hour time weighted average (TWA). This violation occurred on February 11, 2016 where the employee was welding in ballast tank #5; the employee was exposed to iron oxide at an 8-hour TWA of 12.56 mg/m3 of air, approximately 1.26 times the permissible exposure limit of 10 mg/m3. Sampling was performed for 466 minutes during one shift. Zero exposure was assumed for the 14 minute period not sampled.