Figure: 25 TAC §289.202(ggg)(2)(B)(viii)

DAC = ALI(in µCi)/(2000 hours per working year x 60 minutes/hour x 2 x 10⁴ ml per minute) = [ALI/2.4 x 10⁹] µCi/ml,

where 2 x 10⁴ milliliter is the volume of air breathed per minute at work by Reference Man under working conditions of light work.