ARSD 74:31:01:01.05. Major and minor fiber release episode defined

A major fiber release episode is any uncontrolled or unintentional disturbance of ACBM resulting in a visible emission which involves the falling or dislodging of more than three square or linear feet of friable ACBM. A minor fiber release is the uncontrolled or unintentional disturbance of ACBM resulting in a visible emission which involves the falling or dislodging of three square or linear feet or less of friable ACBM.