CAR 721.19
"(2) Weather Requirements
For at least one (1) hour before and until one (1) hour after the estimated time of arrival at the aerodrome of intended landing, there shall be, in respect to that aerodrome:
(a) no risk of fog or other restriction to visibility, including precipitation, forecast or reported, below 3 miles;
(b) no risk of thunderstorms isolated or otherwise forecast or reported;
(c) a forecast ceiling of at least 1,000 feet above FAF altitude and a visibility of at least 3 miles or a ceiling of at least 1,500 feet above the MDA and a visibility of at least 6 miles; and
(d) no risk of freezing rain, freezing drizzle, or sleet forecast or reported;
(3) Aerodrome of Intended Landing - Requirements
(a) the aerodrome of intended landing shall be:
(i) equipped with at least two (2) separate runways each of which shall be operational and suitable for a safe landing for the aeroplane type, taking into consideration the approved operational limitations; and
NOTE: The reciprocal of one runway is not acceptable as the second runway.
(ii) equipped with emergency or standby electrical power supply in support of the main electrical power supply used to operate all equipment and facilities that are essential to the safe landing of the aeroplane, whether such landing be by day or by night."