HomeMy WebLinkAboutJanuary 26, 2022Agenda
Heritage Pickering Advisory Committee
January 26, 2022
7:00 pm
Electronic Meeting
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Page
1.Review and Approval of Agenda
2.Disclosure of Interest
3.Approval of Minutes from November 24, 2021 1
4.Presentations/ Delegations
4.1 Irina Marouchko, Senior Water Resources Engineer, City of Pickering
Re: Claremont Drainage Plan Municipal Class Environmental Assessment
5
5.Business Arising from Minutes
6.New Business
6.1 Approval of 2022 Heritage Pickering Meeting Schedule 20
7.Correspondence
8.Other Business
9.Next Meeting – Wednesday, February 23, 2022
10.Adjournment
Page 1 of 4
Minutes/Meeting Summary
Heritage Pickering Advisory Committee
November 24, 2021
7:00 pm
Electronic Meeting
Attendees: S. Croteau
J. Dempsey
J. Irwin
W. Jamadar
E. John
R. Smiles
E. Martelluzzi, Planner II Heritage (Staff Liaison)
R. Perera, Deputy Clerk (Recording Secretary)
Absent: D. Felin
A. Khan
C. Sopher
Item/
Ref #
Details & Discussion & Conclusion
(summary of discussion)
Action Items/Status
(include deadline as appropriate)
1. Welcome and Call to Order
E. Martelluzzi welcomed members and guests
to the meeting and called the meeting to order.
2. Review and Approval of Agenda
E. Martelluzzi reviewed the agenda and noted
that Item 5.1 will be deferred to the January
Committee meeting. There were no additions or
comments from Committee Members.
Moved by S. Croteau
That the November 24, 2021 Heritage Pickering
Advisory Committee Agenda be approved.
Carried
3. Disclosure of Interest
No disclosures of interest were noted.
4. Approval of Minutes
-May 26, 2021
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Page 2 of 4
Item/
Ref #
Details & Discussion & Conclusion
(summary of discussion)
Action Items/Status
(include deadline as appropriate)
Moved by S. Croteau
That the minutes of the May 26, 2021 meeting of
the Heritage Pickering Advisory Committee be
approved.
Carried
5. Presentations/Delegations
5.1 Irina Marouchko, Senior Water Resources
Engineer, City of Pickering
Re: Claremont Drainage Plan Municipal Class
Environmental Assessment
This item was deferred to the next Committee
Meeting.
6.1 General Business
6.1 Draft Terms of Reference for Heritage
Impact Assessments
Consultant Delegation
Lindsay Reid, Branch Architecture
Re: Draft Terms of Reference for Heritage Impact
Assessments
E.Martelluzzi provided a brief overview of the
Memorandum to the Committee dated October
20, 2021. She added that over the past few
years, the City had received multiple applications
for new development on properties that included
a cultural heritage resource and that Terms of
Reference for Heritage Impact Assessments
would allow for property owners, applicants, or
consultants to be aware of the expectations
required to submit a complete study.
Lindsay Reid, Branch Architecture, joined the
meeting via electronic participation to provide an
overview of the Draft Terms of Reference for
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Page 3 of 4
Item/
Ref #
Details & Discussion & Conclusion
(summary of discussion)
Action Items/Status
(include deadline as appropriate)
Heritage Impact Assessments. Through the aid of
the PowerPoint presentation, Ms. Reid discussed
the reasoning behind a Heritage Impact
Assessment (HIA), when an HIA is required, the
contents of an HIA, and other information
required by an applicant.
A brief questions and answer period ensued
regarding:
•whether other Ontario municipalities have
an established Terms of Reference for
HIAs or were also looking to prepare such
a document;
•whether the Terms of Reference would
apply to the Province;
•the Terms of Reference including wording
that would speak to the intent of the City’s
Official Plan; and,
•whether the Terms of Reference would be
easily amendable.
Moved by R. Smiles
1.That the presentation by Branch
Architecture and the Draft Terms of
Reference for Heritage Impact
Assessments be received; and,
2.That Heritage Pickering endorses the Draft
Terms of Reference for Heritage Impact
Assessments.
Carried
7. Correspondence
7.1 55+ Newsletter Submissions
E.Martelluzzi noted that Community Services
Staff were looking for articles or event details for
the 55+ Newsletter and that while the publication
is for the older adult population, the 55+
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Page 4 of 4
Item/
Ref #
Details & Discussion & Conclusion
(summary of discussion)
Action Items/Status
(include deadline as appropriate)
committee was interested in receiving more
personal articles from a different perspective.
8. Other Business
There was no other business.
9. Next Meeting January 26, 2022
10. Adjournment
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Claremont Drainage Plan
Municipal Class Environmental Assessment
City of Pickering
January 26, 2022
- 5 -
Study Overview and History
•The historic development of the Hamlet of Claremont has existing stormwater
drainage infrastructure that does not meet current design standards and is not
adequate for current stormwater flows. This results in flooding on public and
private proper ties in some areas of the Hamlet during heavy rainfalls.
•The City initiated the Claremont Drainage Plan in February 2017 to complete a
comprehensive analysis of the existing drainage system performance, identify
deficiencies and develop a comprehensive drainage management strategy for
the central area of the Hamlet of Claremont to improve the drainage system and
determine the appropriate level of service. The Study Area is shown on slide 5.
•Following a large rain event in June 2017, the City set aside the overall Claremont
Drainage Plan to assesses site specific risks in the Study Area. The City resumed
work on the Claremont Drainage Plan in late Summer 2020.
•Public Information Centre No. 1 (November 20, 2020 to December 11, 2020)
presented the existing drainage system characterization and preliminary long-list
of alternatives.
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Study Goals
• The goals of the
Claremont Drainage Plan Municipal Class Environmental Assessment (EA) are to:
o Understand the existing drainage system performance;
o Determine the appropriate level of service and methods to improve the existing drainage system performance to reduce the flood risks to the private and public property, buildings and infrastructure;
o Develop an implementation plan that will prioritize improvements based the existing drainage system performance in accordance with the recommended level of service.
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Study Approach and Methodology
Approach
• Assess the hydraulic performance of the
existing drainage system
• Develop a long-term plan for improving the
existing drainage system and reducing flood
risk
• Establish a set of priority-based actions
• Recommend municipally-led capital works to
address improvements to the existing drainage
system within the Study Area
Methodology
• Data collection / reconnaissance
• Flow monitoring under the existing drainage
system
• Numerical modelling to determine flows, flood
elevations and velocities in the existing
drainage system
• Performance evaluation of minor and major
drainage systems
• Systematic alternative assessment, considering:
o Natural environment
o Social environment
o Economic environment
4
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Study Area
7
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Existing Drainage System Types
The existing drainage system within the Study Area comprises of the following types:
Rural roadway with storm sewer Urban roadway with storm sewer Rural roadway with ditches
Mixed rural and urban roadway
with ditches and storm sewer
8
Storm sewer system Open channel – overland flow
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Causes of Flooding in Claremont
Flooding in Claremont can result from:
• Limited minor system capacity (storm sewers and
culverts)
• Limited major system capacity (road right of ways)
• Inadequate channel capacity (conveyance system)
• Lack of stormwater quantity control
• Operational/Maintenance issues such as blockages due
to debris and/or ice
Source: CTV News
9
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Existing Drainage System Performance
10
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Long-list of Alternatives
The following alternatives are being considered as part of a long-list to address the
insufficient capacity of both the minor (storm sewer and culverts) and major (right-of -ways)
drainage systems performance.
Long-list of Alternatives
1. Do Nothing
2. Increase size of storm sewers and culverts, or twinning
3. Super pipes to provide flow control (storm sewer)
4. On-site Stormwater Management (SWM) for private properties
5. Off-line storage areas within available public spaces
6. SWM facilities to provide additional flow control
7. Flow diversions (local inter-catchment)
8. Roof leader/foundation drain disconnection
9. Modify grading on private property
10. Modify grading within road right-of -way or other public property
11. Low Impact Development Best Management Practices (LID BMPs)
12. New drainage system outlets (storm sewers/ major system )
13. Inlet control devices (ICDs)
14. A combination of some of the above alternatives
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Alternative Evaluation Criteria
Alternatives will be assessed using an evaluation framework, to determine the suitability of
each alternative against appropriate evaluation factors as outlined in the table below.
Evaluation Category Evaluation Criteria Criteria Description
Functional Extent to which alternative
improves drainage system
The degree to which the existing drainage system (minor and major)
flow capacity is improved.
Environmental
Impacts to Creek Systems
(stream bank, erosion, water
quality)
Any alternative which would result in degradation of the creek
systems (including erosion) or would result in decreased water quality
would be considered negative. Alternatives which are beneficial
would be considered positive.
Ability to Improve Public
Safety
Depending on reduced flooding risk within both private and/ or
public property, public safety would be improved to varying degrees.
Social Impacts on Private
Properties Relates to the change in flood risk on private properties.
Impacts on Public Lands Depending on the alternative there are varying degrees of impact to
flooding conditions on public lands including roadways.
Economic
Capital Costs
Operations and
Maintenance Costs
Lower costs are preferred over higher costs.
Lower costs are preferred over higher costs.
Constructability
Ease of Construction and
Accessibility
Construction staging and
timing
The ease and accessibility of construction will vary depending upon
alternative location.
Depending on the alternative and the extent of the proposed works,
the project may need to be staged (multiple phases) and may require
multiple years to construct.
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Short-Listed Alternatives
• Two (2) Primary alternatives that have been evaluated involve conveying
runoff from the Franklin Street and Central Street area to an alternate outlet:
o Alternative 1 -Divert runoff to an offline underground storage tank
within the Claremont Memorial Park and discharge to the ditch on Old
Brock Road.
o Alternative 2 -Convey runoff to three (3) online underground storage
tanks within the Central Street right-of -way at the intersection with
Canso Drive.
• Sub alternatives which are common for both primary alternatives include:
o Increase size of storm sewers and culverts, or twinning sewers and
culverts.
o Super pipes to provide flow control.
o Modify grading within the road right-of -ways.
o Low Impact Development Best Management Practices (LID BMPs), to
provide storage and infiltration (where the permeability and capacity of
the soils permit).
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Alternative Assessment
Alternative 1 Claremont Memorial Park Storage Tank
Drainage System Upgrades
16
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Alternative Assessment
Alternative 2 Central Street Right-of -Way Storage
Tanks Drainage System Upgrades
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Alternative Evaluation
Evaluation Alternative 1 Claremont Memorial Park Alternative 2 Central Street Right-of -Way
Criteria Storage Tank Storage Tank
Functional •Mitigates major and minor drainage
system flooding.
•Mitigates major and minor drainage
system flooding.
• East Channel peak flow rate is maintained •East Channel peak flow rate is maintained
Environmental •
at Old Brock Road culvert.
West Channel reduced peak flow rate at •
at Old Brock Road culvert
West Channel reduced peak flow rate at
Canso Drive outfall.Canso Drive outfall.
• Improved public safety.• Improved public safety.
Social •Mitigated flooding impacts to private
property.
•Mitigated flooding impacts to private
property.
•Construction impacts to park and ROW.•Construction impacts to ROW.
Economic •
•
Preliminary capital cost $ 6,518,000.1
Preliminary annual O & M cost $3,000.
•
•
Preliminary capital cost $ 5,474,000. 1
Preliminary annual O & M cost $3,000.
•Construction impacts to recently improved •Construction impacts to the Central Street
public park and Victoria Street. right-of -way requires Region of Durham
Constructability •Staging and timing would be less restrictive
due to implementation within the park.•
approval.
Staging and timing would be more
restrictive due to implementation within
the Central Street right-of -way.
Note 1: The preliminary capital cost estimate does not include the full reconstruction of the Central Street right-of -way and the cost
feasibility may be impacted by the restoration costs. The Region of Durham will be reconstructing Central Street as part of a separate
project undertaking.
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Preliminary Preferred Alternative
• Roadway and storm sewer surcharging conditions identified through this
assessment would be mitigated to the extent feasible with both
alternatives.
• Alternative 2 (Central Street Underground Tank) is the preliminary
preferred alternative due to the lower capital cost and the location of the
infrastructure within the Central Street right-of -way, while not disturbing
the recently improved Claremont Memorial Park or Victoria Street.
• An implementation plan will prioritize improvements based on the
existing drainage system performance.
• The selection of the preferred alternative is subject to input from the
Region of Durham and review by the public; implementation of the
preferred alternative will require approval from the Region of Durham.
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Draft
2022 Heritage Pickering Advisory Committee Schedule
January 26, 2022 - 7:00 p.m.
February 23, 2022 - 7:00 p.m.
March 23, 2022 - 7:00 p.m.
April 27, 2022 - 7:00 p.m.
May 25 2022 - 7:00 p.m.
June 22, 2022 - 7:00 p.m.
September 28, 2022 - 7:00 p.m.
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