Text For Citation: 01 Item/Group: 010A Hazard:

29 CFR 1910.1000(a)(2): Other substances - 8-hour Time Weighted Averages. An employee's exposure to any substance in Table Z-1, the exposure limit of which is not preceded by a "C", shall not exceed the 8-hour Time Weighted Average given for that substance any 8-hour work shift of a 40-hour work week. a) On March 25, 2015, a Bigston Corporation employee using compressed air to clean toner cartridges in the heavy dust room was exposed to concentrations of respirable dust of 8.59 mg/m3. This is approximately 1.75 times the acceptable Time-Weighted Average limit of 5 mg/m3. The exposure was measured over 290 minutes. Zero exposure was assumed for the unsampled time period of 190 minutes. The limit is established to prevent lung disease. b) On April 29, 2015, a Bigston Corporation employee using compressed air to clean toner cartridges in the heavy dust room was exposed to concentrations of respirable dust of 21.o5 mg/m3. This is approximately 1.41 times the acceptable Time-Weighted Average limit of 15 mg/m3. The exposure was measured over 375 minutes. Zero exposure was assumed for the unsampled time period of 105 minutes. The limit is established to prevent lung disease. c) On April 29, 2015, a Bigston Corporation employee using compressed air to clean toner cartridges in the heavy dust room was concentrations of respirable dust of 91.25 mg/m3. This is approximately 6.08 times the acceptable Time-Weighted Average limit of 15 mg/m3. The exposure was measured over 365 minutes. Zero exposure was assumed for the unsampled time period of 115 minutes. The limit is established to prevent lung disease. In accordance with 29 CFR 1903.19(d), abatement certification is required for this violation (using the CERTIFICATION OF CORRECTIVE ACTION WORKSHEET), and in addition, documentation demonstrating that abatement is complete must be included with your certification. This documentation may include, but is not limited to, evidence of the purchase or repair of the equipment, photographic or video evidence of abatement, or other written records.