Means a plan, map, drawing, file, report or any other form or transmittal by which a professional member advises or gives an opinion as to,
(a) The establishment or determination of boundaries delineating any right or interest in land or land covered with water, or
(b) The determination or analysis of spatial attributes of natural and artificial features on, above or below the surface of the earth, whether or not the surface of the earth is situated below water;
Source
http://www.e-laws.gov.on.ca/html/source/regs/english/2010/elaws_src_regs_r10216_e.htm