This consultation closes at 11:59 p.m. on:
April 23, 2026
Proposal summary
This proposal is to amend the existing Environmental Compliance Approval (ECA) No. 0309-9SGMS5 that was issued on January 13, 2015, for the approval of effluent limits for the Hewitt Quarry's facility located at 2434 Brennan Line, in the Township of Severn, Ontario.
Location details
Site address
2434 Brennan Line
Township of Severn,
ON
Canada
Site location details
Hewitt Quarry
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)
M.A.Q. Aggregates Inc.
78 Country Club Road
King,
ON
L7B 1M4
Canada
Proposal details
This proposal is to amend the existing Environmental Compliance Approval (ECA) No. 0309-9SGMS5 that was issued on January 13, 2015 for the approval of effluent limits for the Hewitt Quarry's facility located at 2434 Brennan Line, in the Township of Severn, Ontario.
The previously approved sewage works consist of a sewage treatment system, which collects groundwater and surface water runoff from the extraction area.
The existing settling pond includes:
- a sediment forebay
- two filtration berms
- a low-flow outlet control structure, and
- an overflow spillway
Treatment is provided by a settling pond prior to being discharged offsite. Due to high boron concentrations in the groundwater surrounding the quarry, effluent from the existing settling pond regularly exceeds the effluent limits set in the existing ECA.
In this amendment application, new effluent limits are being proposed to better monitor the performance of the existing industrial sewage treatment system.
Supporting materials
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135 St Clair Ave West
1st Floor
Toronto,
ON
M4V 1P5
Canada
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Client Services and Permissions Branch
135 St Clair Ave West
1st Floor
Toronto,
ON
M4V 1P5
Canada
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Contact
Client Services and Permissions Branch
135 St Clair Ave West
1st Floor
Toronto, ON
M4V 1P5
Canada