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Standard Interpretations - Table of Contents
• Standard Number: 1910.1000

June 30, 1976

Assistant Secretary of Labor
SUBJECT: Interpretation of Allowable Airborne Concentrations of Mercury

29 CFR 1910.1000, Table Z-2 contains the ceiling value for mercury. Historically the values in this table relate to the maximum allowable concentrations defined by ANSI as 8 hour time-weighted average.

Therefore, the allowable airborne concentration of mercury shall be interpreted as 0.1 mg/m(3) as determined on the basis of the full shift time-weighted average.

Standard Interpretations - Table of Contents

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