Milton Quarry East Extension, Halton Hills (Dufferin Aggregates)

Current Application

The Milton Quarry (original, extension, and east components) straddles the Nassagaweya-Esquesing Townline in the Towns of Milton and Halton Hills (PDF file).  Active extraction only occurs on that portion of the quarry in Halton Hills.  On December 20, 2021, Halton Region received Dufferin’s application to amend the Regional Official Plan.  The application proposes to expand the extraction areas to the east of the existing quarry.

Application Status

Halton Region deemed the application complete on January 18, 2022.  The application is currently under technical review by Halton Region, Town of Halton Hills, Town of Milton, Conservation Halton, and Niagara Escarpment Commission through a Joint Agency Review Team (JART) framework.  Halton Region continues to be engaged with Dufferin Aggregates Co. through the JART process.

Regional Council is responsible for making a decision on the proposed Regional Official Plan Amendment. The Ministry of Natural Resources and Forestry (external link) , through the Aggregate Resources Act (external link) approval process, is ultimately responsible for making a decision on the quarry expansion.

Technical Summary Report (JART Report)

In July 2023, JART completed the technical review of the second circulation materials submitted by Dufferin Aggregates. This completed review includes a technical report summarizing the content as well as comment tables with detailed comments on the review. A copy of the 2023 Technical Summary Report and its appendices can be downloaded from the links below.

2023 Technical Summary Report and Appendices

• Technical Summary Report (JART Report), Milton Quarry, June 2023 (PDF file)
• Appendix A – Milton JART Report – Initial Letters of Objection (PDF file)
• Appendix B – Dufferin Agriculture JART Response, April 2023 (PDF file)
• Appendix C – Dufferin Air Quality JART Response, June 2023 – Per JART Report, waiting revised study from Dufferin to complete JART review
• Appendix D – Dufferin Archeology and Cultural Heritage JART Response, June 2023 (PDF file)
• Appendix E – Dufferin Blasting JART Response, June 2023 (PDF file)
• Appendix F – Dufferin Financial JART Response, April 2023 (PDF file)
• Appendix G and I – Dufferin Geology and Water Resources and Karst JART Response, June 2023 (PDF file)
• Appendix H – Dufferin Water Modelling JART Response, June 2023 (PDF file)
• Appendix J and K – Dufferin Natural Heritage – Terrestrial and Aquatic JART Response, June 2023 (PDF file)
• Appendix L – Dufferin Noise JART Response, June 2023 (PDF file)
• Appendix M – Dufferin Progressive and Final Rehabilitation Plan JART Response, June 2023 (PDF file)
• Appendix N – Dufferin Ecological Enhancement Plan JART Response, June 2023 (PDF file)
• Appendix O – Dufferin Traffic JART Response, June 2023 (PDF file)
• Appendix P – Dufferin Visual Impact JART Response, January 2023 (PDF file)
• Appendix Q – Dufferin AMP JART Response, June 2023 (PDF file)

A copy of the Technical Summary Report can also be found as Attachment #3 to Report LPS55-23 – Technical Summary Report (JART Report) for the Proposed Milton Quarry East Expansion (Dufferin Aggregates) in the Town of Halton Hills, File No. RQ66A – which is available on the July 12, 2023, Regional Council Agenda.

Statutory Public Meeting

Halton Region hosted a Statutory Public Meeting on May 17, 2023. The purpose of the Statutory Public Meeting was to provide the public with the opportunity to provide comments to Regional Council on the proposed Amendment filed by the applicant Dufferin Aggregates Co. to amend the Regional Official Plan to expand the Milton Quarry.

View a recording of the May 17, 2023 – Statutory Public Meeting of Council 13-23 (external link)

Halton Region 45-day Objection Letter

On May 6, 2022, the Region’s Chief Planning Official issued a Letter of Objection to the Aggregate Resources Act License Application outlining a series of concerns related to the proposed quarry expansion.  Concerns identified in this letter were informed by the review of technical reports and studies submitted in support of the application by staff and retained consultants. The same concerns were submitted on May 6, 2022, in response to the Environmental Registry of Ontario posting # 019-5305.

Download a copy of the letter:

• Dufferin Milton Quarry East Extension ARA License Objection Letter (PDF file)

Joint Agency Review Team (JART) Second Circulation (Complete)

Staff and peer reviewers from Halton Region, Town of Halton Hills, Town of Milton, Conservation Halton, and Niagara Escarpment Commission have completed assessing information that was provided by Dufferin Aggregates on November 3, 2022, through JART Review.

Focused additional work is being undertaken by Dufferin for the Air Quality review and will be reviewed by JART when it is received.

The following detailed comments were delivered to Dufferin Aggregates upon completion of the second circulation technical review.

Joint Agency Review Team (JART) First Circulation (Complete)

Staff and peer reviewers from Halton Region, Town of Halton Hills, Town of Milton, Conservation Halton, and Niagara Escarpment Commission are currently assessing information that was provided by Dufferin Aggregates on December 20, 2021, through JART Review. The following detailed comments were delivered to Dufferin Aggregates upon completion of the first circulation technical review.

Submission Materials

The following materials were submitted with the Regional Official Plan Amendment application on December 20, 2021 (or alternate date, if applicable). Halton Region deemed the application as complete on January 18, 2022:

Download a copy of Halton Region’s letter deeming the Regional Official Plan Amendment application complete:

• RQ66A – Notice to Applicant Deeming Complete – January 18, 2022 (PDF file)

The following concurrent applications were also submitted at the same time, in order to permit the proposed quarry expansion:

• ARA License Application with the Ministry of Natural Resources and Forestry
• Niagara Escarpment Plan Amendment Application with the Niagara Escarpment Commission
• Niagara Escarpment Development Permit Application with the NEC; and
• Local Official Plan Amendment Application with the Town of Halton Hills

Staff Contact

The staff contact for this project is:

Janice Hogg, Senior Project Manager (Aggregate)
Janice.Hogg@halton.ca
905-825-6000, ext. 2921
Planning Fax: 905-825-8822
Toll-free Tel: 1-866-4HALTON (1-866-442-5866)
TTY: 905-827-9833