Text For Citation: 01 Item/Group: 002C Hazard:

29 CFR 1910.1000(b)(2):Acceptable ceiling concentrations. An employee's exposure to a substance listed in Table Z-2 shall not exceed at any time during an 8-hour shift the acceptable ceiling concentration limit given for the substance in the table, except for a time period, and up to a concentration not exceeding the maximum duration and concentration allowed in the column under "acceptable maximum peak above the acceptable ceiling concentration for an 8-hour shift" Table Z-2 Hydrogen Sulfide "Acceptable maximum peak above the acceptable ceiling concentration for an 8-hour shift" is 50 ppm. "Acceptable maximum peak above the acceptable ceiling concentration for an 8-hour shift Maximum duration" is 10 mins. once, only if no other meas. exp. occurs: On or about June 7, 2021, an employee was exposed to a hydrogen sulfide concentration over 100 parts per million for at least 10 minutes after entering the Town of Calumet Sanitation District #1 Manhole #38.