Regulations for the Prevention of Pollution from Ships and for Dangerous Chemicals

142 (1) A ship in Section I waters is authorized to discharge cargo residues in small quantities other than a cargo residue that is a pollutant referred to in paragraphs 4(a) to (c) if

• (a) for a ship in Lake Ontario or in the area of Lake Erie east of a line that runs due south from Point Pelee,

  • (i) the cargo residues are discharged from the ship at a distance of more than 12 nautical miles from shore, or

  • (ii) in the case of iron ore cargo residues, the cargo residues are discharged from the ship at a distance of more than 5.2 nautical miles from shore;

• (b) for a ship that is in the area of Lake Erie west of a line running due south from Point Pelee and that immediately loads new cargo into the ship from a Lake Erie port after unloading iron ore, coal or salt at that port, the cargo residues of iron ore, coal or salt are discharged from the ship into the dredged navigation channels running between Toledo Harbor Light and Detroit River Light;

• (c) for a ship in Lake Huron, other than a ship in the Six Fathom Scarp Mid-Lake Special Protection Area,

  • (i) the cargo residues are discharged from the ship at a distance of more than 12 nautical miles from shore,

  • (ii) in the case of iron ore, coal or salt cargo residues on a ship upbound along the Michigan thumb between 5.04 nautical miles northeast of entrance buoys 11 and 12 and the track line turn abeam of Harbor Beach, the cargo residues are discharged from the ship at a distance of more than 2.6 nautical miles from shore, and

  • (iii) in the case of iron ore cargo residues, the cargo residues are discharged from the ship at a distance of more than 5.2 nautical miles from shore;

• (d) for a ship in Lake Superior, other than the Lake Superior Special Protection Areas,

  • (i) the cargo residues are discharged from the ship at a distance of more than 12 nautical miles from shore, and

  • (ii) in the case of iron ore cargo residues, the cargo residues are discharged from the ship at a distance of more than 5.2 nautical miles from shore;

• (e) for a ship in waters referred to in paragraphs (a) to (d) and their connecting and tributary waters, the cargo residues are limestone or other clean stone;

• (f) for a ship in the St. Lawrence River west of Les Escoumins, the cargo residues are not cargo sweepings and the ship is en route;

• (g) for a ship in the inland waters of Canada in the St. Lawrence River east of Les Escoumins, the ship is en route and the cargo residues are discharged from it at a distance of more than 6 nautical miles from shore; and

• (h) for a ship in the St. Lawrence River or Gulf of St. Lawrence that is not in the inland waters of Canada, the ship is en route and the cargo residues are discharged from it at a distance of more than 12 nautical miles from shore.

(2) For the purposes of paragraphs (1)(f) to (h), the authorized discharge of cargo residues is restricted to alumina, bauxite, bentonite, cement, chrome ore, clay, dolomite, ferromanganese, gypsum, ilmenite, iron ore, iron ore concentrate, lead ore concentrate, limestone, manganese ore, manganese concentrate, nepheline syenite, perlite, quartz, salt, sand, talc, urea, vermiculite and zinc ore concentrate.

(3) For the purposes of this section, the master of the ship shall ensure that no discharge of cargo residues is made if, through visual observation, a marine mammal is within 0.5 nautical miles of the ship.