40 CFR 61.42 - Emission standard.
HandlingregulationOrganisationUS Federal (eCFR)
US federal regulation 40 CFR 61.42 limits beryllium emissions from rocket-motor test sites to time-weighted atmospheric concentrations of 75 microgram minutes per cubic meter over 10 to 60 minutes within any two consecutive weeks. Closed-tank collection of beryllium propellant combustion products must not exceed 2.0 g/hr or 10 g/day.
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