ontario regulation 310/25

made under the

Surveyors Act

Made: November 28, 2025
Approved: December 11, 2025
Filed: December 12, 2025
Published on e-Laws: December 12, 2025
Published in The Ontario Gazette: December 27, 2025

Amending O. Reg. 216/10

(PERFORMANCE STANDARDS FOR THE PRACTICE OF PROFESSIONAL LAND SURVEYING)

1. (1) The definition of “licensed member” in section 1 of Ontario Regulation 216/10 is revoked.

(2) Section 1 of the Regulation is amended by adding the following definition:

“member” means a member of the Association unless otherwise specified, and does not include retired, associate or honorary members; (“membre”)

(3) The definition of “professional member” in section 1 of the Regulation is revoked.

2. Section 9 of the Regulation is revoked and the following substituted:

Field error tolerances

9. (1) The error of closure of field data on a survey, in respect of the perimeter of each parcel of land or closed traverse, shall not exceed an error of 30 millimetres plus one part in 15,000 of the total perimeter length.

(2) The error of any derived or measured distance to evidence used to set or confirm the location of a line or corner of a limit under survey shall not exceed 30 millimetres plus 1 part in 15,000 of the distance.

(3) The error of any derived or measured direction to evidence used to set or confirm the location of a line or corner of a limit under survey shall not exceed 20 seconds of arc plus the arctan (0.012/length of line in metres) expressed in seconds of arc.

3. Section 12 of the Regulation is revoked and the following substituted:

Measurements

12. All survey measurements shall be verified by mathematical closure, independent measurement or agreement with a previous survey of equal or better accuracy.

4. (1) Paragraph 5 of section 35.2 of the Regulation is revoked and the following substituted:

5. Plan number or Concession number, Range number, Section Number, Mining Claim Number, Summer Resort Location, Mining Location, Agricultural Location, Farming Location, Water Power Lease Number, Gore Number, Gore Name.

(2) Section 35.2 of the Regulation is amended by adding the following paragraph:

8. Lot Number, Block number, Unit Number, Reserve Number or any other unit of land shown on a plan registered or deposited under the Registry Act or the Land Titles Act, or as shown on the original survey.

5. Subsection 35.3 (2) of the Regulation is amended by striking out “paragraphs 1 to 7” and substituting “paragraphs 1 to 8”.

6. The Regulation is amended by striking out “professional member” wherever it appears and substituting in each case “member”.

Commencement

7. This Regulation comes into force on the later of the day subsection 4 (1) of Schedule 4 to the Resource Management and Safety Act, 2025 comes into force and the day this Regulation is filed.

 

Made by:
Pris par :

Council of the Association of Ontario Land Surveyors:
Le Conseil de l’Ordre des arpenteurs-géomètres de l’Ontario :

Sasa Krcmar

President

Alnashir Jeraj

Executive Director

Date made: November 28, 2025
Pris le : 28 novembre 2025