Exposure monitoring requirements under the coke oven emissions standard

OSHA memorandum of December 7, 1999 on exposure monitoring under the Coke Oven Emissions Standard, 29 CFR 1910.1029(e)(1)(iii). It grants three steel companies relief from quarterly full-shift sampling on every shift, allowing worst-case or representative sampling, and classifies related violations as de minimis when conditions are met.