This consultation was open from:
May 19, 2026
to July 2, 2026
Decision summary
Approval issued for establishment of industrial stormwater management Works to serve Clean Soils Services Ltd’s Waste Processing/Transfer Facility located at 45 Comstock Road, located in the City of Toronto, for the collection, transmission, treatment and disposal of stormwater run-off from a total catchment area of 1.05 hectares.
Location details
Site address
45 Comstock Road
Toronto,
ON
M9B 1C1
Canada
Site location map
The location pin reflects the approximate area where environmental activity is taking place.
View this location on a map opens link in a new windowProponent(s)
Clean Soils Services Ltd.
45 Comstock Road
Toronto,
ON
M1L 2G7
Canada
Decision details
Approval issued for establishment of industrial stormwater management Works to serve Clean Soils Services Ltd’s Waste Processing/Transfer Facility located at 45 Comstock Road, located in the City of Toronto, for the collection, transmission, treatment and disposal of stormwater run-off from a total catchment area of 1.05 hectares, to provide Enhanced Level water quality protection and erosion control, and to attenuate post-development peak flows to pre-development or allowable peak flows for all storm events up to and including the 100-year storm event, discharging to a southern ditch adjacent to the CN Rail Spur line ultimately discharging to the City of Toronto’s combined sewer.
Proposed Works: underground Storage provided in two custom designed reinforce concrete underground tanks #1 and #2 located at the south rear of the property, beneath the paved yard having a maximum available storage volume of 122.5 cubic metres and 373.0 cubic metres to discharge via gravity into the control MH 1 which is to discharge via an existing 200 millimetres diameter pipe orifice tube from the existing control Manhole 1 allowing a maximum first flush discharge of 54.7 litres per second into an oil and grit separator (OGS) replaced model; with emergency overflow as follows:
Emergency Overflow from the tanks # 2 is to be collected into a 2.8 metres X 4.7 metres X 400 millimetres deep concrete plunge pool and discharge into the existing grass swale/ditch connected with existing municipal storm sewers.
OGS (catchment area 1.014 hectares): one (1) oil and grit separator (Stormceptor Jellyfish Filter - Model JF8-6-2 or equivalent Equipment) installed in an off-line-configuration (by removing the existing OGS STC 2000), to accept the first flush flow of 54.7 L/s via a 200 millimetres pipe orifice for treatment and allows overlfow to by-pass.
The unit is confirmed to have a sediment storage capacity of 1.42 cubic metres, an oil storage capacity of 1,469 litres, and a total storage capacity of approximately 9.25 cubic metres, with a rated treatment capacity of 35.3 litres per second, and an overflow outlet for 124 litres per second, to discharge into the southern ditch adjacent to the CN Rail Spur line ultimately discharging to the City of Toronto’s combined sewer diameter 225 millimetres in manhole # MH4206421685.1 at a maximum allowable rate of 124.21 L/s.
Effects of consultation
No comments were received within the stipulated posting period of 45 days.
Supporting materials
View materials in person
Some supporting materials may not be available online. If this is the case, you can request to view the materials in person.
Get in touch with the office listed below to find out if materials are available.
How to Appeal
This instrument decision can be appealed. You have 15 days from October 22, 2026 to begin the appeal process.
Carefully review the information below to learn more about the appeal process.
How to appealClick to Expand Accordion
Start the process to appeal
If you’re an Ontario resident, you can start the process to appeal this instrument decision.
First, you’ll need to seek leave (i.e. get permission) from the relevant appellate body to appeal the decision.
If the appellate body grants leave, the appeal itself will follow.
Seek leave to appeal
To seek leave to appeal, you need to do these three things:
- prepare your application
- provide notice to the minister
- mail your application to three parties
1. Prepare your application
You’ll need to prepare an application. You may wish to include the following things in your application:
- A document that includes:
- your name, phone number, fax number (if any), and/or email address
- the ERO number and ministry reference number (located on this page)
- a statement about whether you are a resident in Ontario
- your interest in the decision, and any facts you want taken into account in deciding whether you have an interest in the decision
- the parts of the instrument that you’re challenging
- whether the decision could result in significant harm to the environment
- the reason(s) why you believe that no reasonable person – having regard to the relevant law and to any government policies developed to guide decisions of that kind – could have made the decision
- the grounds (facts) you’ll be using to appeal
- the outcome you’d like to see
- A copy of the instrument (approval, permit, order) that you you are seeking leave to appeal. You’ll find this in the decision notice on the Environmental Registry
- Copies of all supporting documents, facts and evidence that you’ll be using to appeal
What is considered
The appeal body will consider the following two questions in deciding whether to grant you leave to appeal:
- is there is good reason to believe that no reasonable person, with respect to the relevant law and to any government policies developed to guide decisions of that kind, could have made the decision?
- could the decision you wish to appeal result in significant harm to the environment?
2. Provide your notice
You’ll need to provide notice to the Minister of the Environment, Conservation and Parks that you’re seeking leave to appeal.
In your notice, please include a brief description of the:
- decision that you wish to appeal
- grounds for granting leave to appeal
You can provide notice by email at minister.mecp@ontario.ca or by mail at:
College Park 5th Floor, 777 Bay St.
Toronto, ON
M7A 2J3
3. Mail your application
You’ll need to mail your application that you prepared in step #1 to each of these three parties:
- appellate body
- issuing authority (the ministry official who issued the instrument)
- proponent (the company or individual to whom the instrument was issued)
Clean Soils Services Ltd.
45 Comstock Road
Toronto,
ON
M1L 2G7
Canada
Registrar, Ontario Land Tribunal
655 Bay Street, Suite 1500
Toronto, Ontario
M5G 1E5
(416) 212-6349
(866) 448-2248
OLT.Registrar@ontario.ca
Include the following:
This is not legal advice. Please refer to the Environmental Bill of Rights for exact legal requirements. Consult a lawyer if you need help with the appeal process.
Connect with us
Contact
Client Services and Permissions Branch
40 St. Clair Avenue West
Floor 2
Toronto,
ON
M4V 1M2
Canada
Original proposal
Proposal details
This proposal is for a new Environmental Compliance Approval (Industrial Sewage) for Clean Soils Services Ltd. This application is for the collection, transmission and disposal of stormwater runoff at Clean Soils Services Ltd's waste processing/transfer facility located at 45 Comstock Road, Toronto, Ontario.
The proposed site modification involves the installation of two large underground tanks and a Jellyfish Filter (Model JF8-6-2) at the rear of the property. These tanks are designed to provide (i) stormwater storage capacity to meet the City of Toronto’s flow control and water balance requirements, and (ii) enhanced containment to prevent stormwater contamination.
Stormwater from the site will be directed to a southern ditch adjacent to the CN Rail Spur line ultimately discharging to the City of Toronto’s combined sewer.
Supporting materials
View materials in person
Some supporting materials may not be available online. If this is the case, you can request to view the materials in person.
Get in touch with the office listed below to find out if materials are available.
Comment
Commenting is now closed.
This consultation was open from May 19, 2026
to July 2, 2026
Connect with us
Contact
Client Services and Permissions Branch
40 St. Clair Avenue West
Floor 2
Toronto,
ON
M4V 1M2
Canada
Comments received
Through the registry
0By email
0By mail
0