An unauthorized discharge occurs when:
• A substance or mixture is discharged from a production or drilling installation in an amount or at a concentration in excess of the limits described in the Operator’s Environmental Protection Plan, or the substance or the manner of discharge is not described in that plan Note: In respect of the definition of pollution as per DPR 1(1); C NLOPB/CNSOPB/NEB Environmental Protection Plan Guidelines, March 2011.
• A toxic fluid is discharged from a diving installation or an accommodations installation. Note: INST 70(1).
• A discharge occurs from a geophysical vessel that constitutes a threat to the environment Note: GPR 27.
Source: Incident Reporting and Investigation Guidelines, The Canada-Nova Scotia Offshore Petroleum Board and Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada, November 30, 2012. Regulatory Guidance