Got these from the Natural Resources Canada web site. It has most of the symbols you need.
As for the exact symbols, I found this answer from an ESRI forum which I think is a good answer so I'll just post it here anyway for the benefit of people who are seeking the same information.
Mapping Center Answer:
We would suggest starting with the information available through the
(CGDI) Canadian Geospatial Data Infrastructure site. Searching for
styles specific to industry standards would be something that ESRI
Canada may have links to through their customer support. There is a
very good recent white paper article called ESRI Technology for the
Canadian Geospatial Data Infrastructure (CGDI) that explains the
effort to organized Canadian GIS standards.
As an example, if you are looking for standards specific to Canadian
structures, (examples: Provincial BC, AB) for symbolizing water,
sewer, hydrants etc, it may be somewhat challenging to find specific
styles -- many are kept as assets that are not shared by the authoring
organization and are considered proprietary. We would go with trying
through the ESRI Canada site and see if they can put you in contact
with the individual government entities that are in charge.