HomeMy WebLinkAboutINS-2022-102 - Environmental Assessment Addendum to the Integrated Stormwater Management Master PlanStaffeeport
IST` � Ni,R
Infrastructure Services Department www.kitchener.ca
REPORT TO: Community and Infrastructure Services Committee
DATE OF MEETING: March 7, 2022
SUBMITTED BY: Bu Lam, Director, Sanitary and Stormwater Utilities,
519-741-2600 ext. 4212
PREPARED BY: Nick Gollan, Manager, Sanitary and Stormwater Utilities,
519-741-2600 Ext. 7422
WARD(S) INVOLVED: Ward 4
DATE OF REPORT: February 7, 2022
REPORT NO.: INS -2022-102
SUBJECT: Environmental Assessment Addendum to the Integrated Stormwater
Management Master Plan Project File
RECOMMENDATION:
That Staff be directed to post the Revised Notice of Study Completion Addendum to the
Integrated Stormwater Management Master Plan Schedule `B' Environmental
Assessment Project File for the mandatory 30 -day review period.
REPORT HIGHLIGHTS:
• Per the Integrated Stormwater Management Master Plan, "Second Priority" erosion sites
are to be considered for integration with other City projects as they arise.
• "Second Priority" erosion sites have been identified to be included in the detailed design and
construction of a section of Schneider Creek between Pioneer Drive and the confluence of
Schneider Creek with the Grand River.
• An Environmental Assessment addendum must be published to comply with the
Environmental Assessment Act, R.S.O. 1990.
• This report supports Environmental Leadership.
BACKGROUND:
On July 10, 2016, the City of Kitchener formally completed the Integrated Stormwater
Management Master Plan (ISWM-MP) Schedule `B' Municipal Class Environmental Assessment
Report, including the mandatory 30 -day public review period. The ISWM-MP included the
prioritization and detailed design of projects, thereby removing the need to complete project -
specific Environmental Assessments. These projects are pre -approved to move directly into the
implementation phase (final design and construction) of the Municipal Class Environmental
Assessment Planning and Design Process. City Staff is preparing to retain professional services
for the creek restoration design for reach SC -213, Schneider Creek at Old Carriage Road;
however, there are "secondary" priority erosions sites that can be included in the scope of work
identified, not pre -approved in the ISWM-MP.
*** This information is available in accessible formats upon request. ***
Please call 519-741-2345 or TTY 1-866-969-9994 for assistance.
Page 8 of 132
Stream erosion assessments were completed through the ISWM-MP to document the health of
Kitchener's watercourses; an inventory of erosions sites and risks was developed. The inventory
was then used to identify erosion site and restoration reach opportunities, i.e. projects. The
erosion inventory classified sites as either "primary" or "secondary" priority based on their level -
of -risk and environmental opportunity. Erosion sites given a "primary" priority were provided with
a preferred alternative solution; they could be implemented immediately following the completion
of the ISWM-MP. The "secondary" priority sites were not provided with a preferred solution. The
direction provided in the ISWM-MP was that these "secondary" priority sites be considered for
integration with other City projects as they arose and that monitoring be completed on these
sites to confirm that no change in condition had been observed.
REPORT:
Per the requirements of the ISWM-MP, City Staff has monitored the erosion sites for change in
condition. In 2019, City staff completed creek walks through Lower Schneider Creek from
Schneider Creek at Homer Watson Blvd (near the Ken Seiling Waterloo Region Museum) to the
mouth of Schneider Creek (confluence with the Grand River); a change in conditions was noted
at SC -1A — Schneider Creek at Grand River confluence (Erosion Site ES -40), SC -113 —
Schneider Creek upstream of Old Mill Road (Erosion Site ES -14), SC -313 — Schneider Creek in
the Southwest Optimists Sports Fields (Erosion Sites ES -17 and ES -18). These erosion sites
are near reach SC -213, Schneider Creek at Old Carriage Road, a high priority creek restoration
scheduled for detailed design in 2023. Figure 1 below shows the approximate study limit.
�C9GP %'
�- DOON VILLAGE RD
ojLJ, e p tJ
1:JII
o
w .
Figure 1: Approximate Study Limit
To include the "secondary" priority sites and satisfy the Municipal Class Environmental
Assessment planning and design process, an addendum to the ISWMP-MP must be filed
through a "Revised Notice of Completion". The revised notice of completion must be made
available to the public and agencies for a 30 -day review period. Staff are prepared to file an
Addendum to the ISWM-MP to include the "secondary" priority sites before scoping and hiring
Page 9 of 132
professional services for the detailed design of reach SC -213. A report has been prepared by
Aquafor Beech Ltd. titled "Schneider Creek — EA Addendum to ISWM-MP Environmental
Assessment Project File" to present the alternative solutions and preferred design for the
"secondary" priority sites.
STRATEGIC PLAN ALIGNMENT:
This report supports Environmental Leadership.
FINANCIAL IMPLICATIONS:
Capital Budget — The recommendation has no impact on the Capital Budget.
Operating Budget — The recommendation has no impact on the Operating Budget.
COMMUNITY ENGAGEMENT:
INFORM — The EA Addendum will be posted to the City's website for a 30 -day public review
period if the recommendation of this report is ratified by Council.
The completed addendum report titled, "Schneider Creek - EA Addendum to ISWM-MP
Environmental Assessment Project File" is located here and a hardcopy is available for review
at the Office of the Mayor and Council. If you require this document in an accessible format,
please contact Nick Gollan, nick.gollan(a-)kitchener.ca, 519-742-2600 x7422.
Following Council's approval of INS -2022-102, staff will post the Notice of Completion per the
requirements of the Environmental Assessment Act, R.S.O 1990.
PREVIOUS REPORTS/AUTHORITIES:
• INS -16-080 Implementation Plan — Integrated Stormwater Management Master Plan
ATTACHMENT:
Schneider Creek — EA Addendum to ISWM-MP Environmental Assessment Project File
APPROVED BY:
Denise McGoldrick, General Manager INS
Page 10 of 132
Prepared for:
City of Kitchener
Attention:
Samantha Brickman, CET, Design &
Construction Project Manager,
Utility Planning and Programs
131 Goodrich Dr., Kitchener,
Ontario
Schneider Creek - EA Addendum to ISWM-MP
Environmental Assessment Project File
A report submitted by: =-
Aquafor Beech Ltd.
August 11th, 2020
2600 Skymark Avenue
Building 6, Unit 202
Mississauga, ON L4W 5B2
T. 905.629.0099
Aquafor Beech Reference: 66685
Schneider Creek August 11th, 2020
City of Kitchener
TABLE OF CONTENTS
1.
Introduction......................................................................................... 1
2.
Existing Conditions................................................................................
1
2.1 Primary Site - Schneider Creek at Old Carriage (SC -2B -C) ......................
2
2.2 Additional Secondary Sites.................................................................
2
2.2.1 Schneider Creek at Grand River Confluence (SC -IA) ......................
2
2.2.2 Schneider Creek Upstream of Old Mill Road (SC -IB) .......................
2
2.2.3 Schneider Creek in the Southwest Optimists Sports Fields (SC -3B)...
3
3
Description of Restoration Alternatives......................................................
3
3.1 Preliminary Alternative 1 - Do Nothing .................................................
4
3.2 Preliminary Alternative 2 - Local Works ................................................
4
3.3 Preliminary Alternative 3 - Reach Based Works .....................................
4
3.4 Preliminary Alternative 4 - Removal of Risk ..........................................
5
4
Evaluation of Alternatives.......................................................................
6
4.1 Description of Evaluation Criteria........................................................
6
4.2 Evaluation and Selection of Preferred Alternatives ..................................
7
4.2.1 Schneider Creek at Grand River Confluence (SC -IA) ......................
7
4.2.2 Schneider Creek upstream of Old Mill Road (SC -IB) .......................
9
4.2.3 Schneider Creek in the Southwest Optimists Sports Fields (SC -3B).
10
5
Summary...........................................................................................
12
List of Appendices
Appendix A ISWM-MP EA Erosion Site Figures and Concept Drawings for
Primary Erosion Site SC -2A -C
Appendix B March 26th, 2020 Existing Conditions Report with Photographs
(Presented to City Staff May 4th, 2020)
Appendix C 2020 Existing Conditions Drawings for Addendum Reaches
(SC -1A, SC -1B, SC -3B)
Appendix D Detailed Evaluation of Alternative Results
Appendix E Concept Design Drawings for Addendum Reaches
(SC -1A, SC -1B, SC -3B)
Aquafor Beech Limited 66685 i
Page 12 of 132
Schneider Creek August 11th, 2020
City of Kitchener
1. Introduction
The current study is being completed as an addendum to the 2016 City of Kitchener
Integrated Stormwater Management Master Plan (ISWP-MP). The City has
identified a change in conditions for three (3) additional reaches (4 erosion sites)
located near to a high priority site for Schneider Creek at Old Carriage Road
(SC -2B). As stated in the ISWM-MP, amendments to the projects identified as part
of the preferred alternatives can be made using the addendum procedures outlined
in the Municipal Engineers Association Municipal Class Environmental Assessment
Act (October 2000, as amended in 2007 & 2011) document and shall be posted for
the required 30 day review period.
As such, this addendum study to the ISWM-MP is to update the preferred
alternative for Schneider Creek at Old Carriage Road (SC -2B) to permit the
simultaneous advancement of three (3) additional smaller projects located adjacent
to the immediate work area, specifically:
• SC -1A - Schneider Creek at Grand River confluence (bank erosion around
decommissioned forced sanitary sewer manhole, ES -40)
• SC -1113 - Schneider Creek upstream of Old Mill Road (bank erosion and trail
management risks, ES -14)
• SC -3113 - Schneider Creek in the Southwest Optimists Sports Fields (bank
erosion and trail management risk at two locations):
o SC -3113-A - Schneider Creek at Pioneer Drive (ES -17)
o SC -3113-113 - Schneider Creek at Homer Watson Boulevard (ES -18)
As presented in Appendix A, Schneider Creek at Old Carriage Road (SC -2B -C) was
identified in the ISWM-MP as a primary opportunity site located in reaches SC -2B to
3A (labelled SC -2B -3A). The additional reaches assessed in this addendum study
were identified as secondary sites. The preferred alternative for site SC -2B -C as
recommended in 2016 is also provided in Appendix A for reference. The purpose
of this report is to summarize an assessment of existing conditions for these
erosion sites and to provide the evaluation of alternative solutions for the three
additional reaches.
2. Existing Conditions
Existing conditions for the addendum study area were assessed March 26th, 2020
for comparison with the 2015 conditions as presented in the 2016 ISWM-MP. The
results of the current assessment, including photographs, were discussed with City
staff in a meeting on May 4th, 2020 as documented in Appendix B. A short
description for the existing conditions in each reach is provide below, starting with
the primary site in Reach SC -2B and followed by the three (3) additional reaches.
Aquafor Beech Limited 66685 1
Page 13 of 132
Schneider Creek August 11th, 2020
City of Kitchener
2.1 Primary Site — Schneider Creek at Old Carriage (SC -2B -C)
The primary site recommended for Reach Based Works within the ISWM-MP was
initially identified by a series of seven (7) local erosion issues documented as
erosion sites 15a -f and 16. These erosion issues included risks to private property
due to bank erosion and channel instability, as well as deterioration of older erosion
control structures such as gabion baskets, cribwalls, boulders, armourstone, rip -
rap, and interlocking concrete bricks.
The existing conditions for Reach SC -2B were similar in 2020 as compared to 2015,
but with some evidence of continued bank erosion (e.g., ES -15 c and e) and further
deterioration of erosion control structures. Specifically, additional undercutting and
slumping was observed for the cribwalls at ES -15c and the gabion baskets and ES -
15d and ES -16. The most significant new issue noted was floodplain scour along
the gravel trail immediately upstream of ES -15d (see pages 5 and 6 in
Appendix B).
2.2 Additional Secondary Sites
As secondary sites identified within the ISWM-MP, all three additional reaches were
previously recommended for monitoring. The March 2020 assessment of existing
conditions for each of the four secondary erosion sites is summarized below with
photos presented in Appendix B and drawings presented in Appendix C.
L'�PO'irieiGer �.teeK aC W di'1e Aver LUM'WetiCe (SC- ,J
Site ES -40 within Reach SC -1A was identified for monitoring in 2015 due to a
manhole being exposed along the bank of Schneider Creek immediately upstream
of the Grand River confluence (see Figure 1-A in Appendix C). Angular rock was
previously placed along the bank around the manhole. Inspection of the site in
2020 confirmed that the bank has continued to scour around this decommissioned,
forced sanitary sewer manhole, including movement of the angular rock along the
bank. However, other than the continued bank erosion immediately around the
manhole, no other erosion or scour issues were noted to be a problem within the
confluence area of Schneider Creek and the Grand River.
.2.2 Schneider Creek Upstream of Old Mill Road (SC -1B)
Site ES -14 within Reach SC -1B was identified for monitoring in 2015 due to active
bank erosion into the adjacent gravel trail (see Figure 1-113 in Appendix C).
Following the 2015 assessment the trail was realigned approximately 5 metres
setback from the eroding channel bank. Evidence of continued bank erosion in
Schneider Creek at this site was confirmed in 2020 (which is a natural process that
may be accelerated by additional runoff from upstream urban land uses).
Aquafor Beech Limited 66685 2
Page 14 of 132
Schneider Creek August 11th, 2020
City of Kitchener
Ongoing future risks to the trail system are expected as the bank continues to
erode. Although the trail was recently realigned, there was a upstream location
within the site with a buffer of less than 2 m between the channel and the trail.
Schneirf - r -eek in the SouthvtfAicf- Optimfct� ';nn► -t. Ffe/ds (SC -3B)
Sites ES -17 and ES -18 within Reach SC -3B were identified for monitoring in 2015
due to bank erosion adjacent to the gravel trail within the Southwest Optimists
Sports Fields (which has since been upgraded to a group four new baseball
diamonds). Evidence of continued erosion at both sites was confirmed in 2020 (see
Figure 1-C and 1-D in Appendix C).
Continued erosion at the downstream location ES -17 (Schneider Creek at Pioneer
Drive, SC -3B -A) has resulted in the local decommissioning of the trail, and future
risks to the adjacent parking lot remain. Evidence of continued erosion at the
upstream location ES -18 (Schneider Creek at Homer Watson Boulevard, SC -3B -B)
was also observed in 2020 due to the oversteepened and unvegetated slope,
however the trail has been realigned since 2015 with the upgraded sports fields.
New drainage conditions were also noted for the upstream site from the new sports
fields, with storm water designed to discharge (and thus infiltrate) into top of the
already unstable and eroding slope. Evidence of the additional infiltration was
observed within the local soil moisture conditions of the embankment aligned with
the storm water discharge point.
3 Description of Restoration Alternatives
Following the EA procedure as outlined in the ISWM-MP, each of the primary
erosion sites was evaluated for different preliminary restoration alternatives. For
this report, the same four (4) preliminary alternatives were used to evaluate the
secondary erosion sites on Schneider Creek reaches SC -1A, SC -1B, and SC -3B:
• Preliminary Alternative 1 - Do Nothing
• Preliminary Alternative 2 - Local Works
• Preliminary Alternative 3 - Reach Based Works
• Preliminary Alternative 4 - Removal of Risk
Each of the alternatives was evaluated and ranked using a list of relevant
environmental, social, economic, and technical criteria, considering how the project
will affect the environment and the surrounding community. The following
subsections provide general descriptions for each of these preliminary alternatives,
followed by the evaluation of alternatives for each of the addendum reaches. Note
the following alternative descriptions have been shortened and full descriptions can
be found in the ISWM-MP report.
Aquafor Beech Limited 66685 3
Page 15 of 132
Schneider Creek August 11th, 2020
City of Kitchener
3.1 Preliminary Alternative 1 — Do Nothing
The Do Nothing option is a mandatory concept that must be considered in the Class
EA process, as it helps to justify the need to undertake remedial flood or erosion
control projects. It forms the basis of comparison against all other alternatives to
determine whether the solutions provide better outcomes than just leaving the sites
alone, by identifying the existing and long-term risks associated with the current
conditions.
The environmental effects of a Do Nothing approach relate to the potential long-
term effects of erosion on the terrestrial, cultural, aquatic and economic
environments, as well as engineering components. Ultimately, all the existing
hazard sites associated with noted erosion sites (e.g., eroding stream banks,
deterioration of previous treatments, or degradation of habitat conditions) would
remain.
3.2 Preliminary Alternative 2 — Local Works
Local Works would involve undertaking stream restoration works at strategic
locations in order to limit the impact of existing erosion. Local works would reduce
the level of risk by applying local bank or slope stabilization treatments using either
hardened (engineered) type treatments, or more natural (vegetation and
biotechnical engineered) type treatments.
A key consideration for undertaking selective local works is the understanding that
the observed instability and risks are locally focused within a reach, and that the
decision to apply local treatments to address the observed instability is not
anticipated to initiate instability at other locations, thus resulting in increased
erosion risk elsewhere within the reach. The intent of these works would be to
protect the adjacent features at risk (i.e., residential properties and infrastructure),
both now, and in the future by anticipating channel activity that may occur in the
vicinity of the at -risk areas.
3.3 Preliminary Alternative 3 — Reach Based Works
Reach based channel restoration would involve a combination of Natural Channel
Design (NCD) techniques and Geomorphic Referenced River Engineering (GRRE)
generally referred to as a hybrid type design. Hybrid designs are most often found
where project constraints dictate that the channel cannot be allowed to evolve or
migrate naturally, or if the urbanization of the upstream watershed has created a
regime that cannot be maintained under natural conditions.
This alternative would ultimately be selected for a reach if it is determined that the
"Do Nothing" or "Local Works" would not address, or in fact would exacerbate,
Aquafor Beech Limited 66685 4
Page 16 of 132
Schneider Creek August 11th, 2020
City of Kitchener
erosion risk at its current location or transfer those effects of erosion up and/or
downstream within the reach. For these sites, it is understood that there is
systematic instability within the watercourse requiring a larger -scale and systematic
approach to address the risk.
Reach based works would include restoration of the stream to a naturalized form,
maintaining a fixed alignment where property and/or infrastructure constraints
dictate, and grade control where necessary to prevent channel down cutting and to
reintroduce hydraulic floodplain access. Moreover, this alternative would involve
complete remedial works throughout the length of the reach(es) containing the
erosion site(s), recreating the channel bed and banks using a combination of
Natural Channel Design techniques, as well as more traditional river engineering
and bioengineering methods.
During construction, this option would involve a high level of disruption to property
owners, local residents, and habitat (including existing vegetation). Once
completed however, it would provide improved long-term conditions in terms of the
natural function and processes of the watercourse. All disrupted areas would be
restored within the site, including appropriate plantings and seed mixes designed to
provide stability and sustainability, with a long-term management plan to restore
the riparian and terrestrial habitat functions.
3.4 Preliminary Alternative 4 — Removal of Risk
The removal of risk alternative would involve the realignment of risk (i.e.,
infrastructure) away from the channel. This alternative addresses the reoccurring
issues associated with infrastructure and watercourse interactions, and looks at
possible approaches of removing the interaction to provide the creek with sufficient
space to naturally adjust and migrate without posing risks to municipal
infrastructure or private property.
Many of the Removal of Risk alternatives will also include channel restoration works
(be it GRRE or NCD) to address the existing erosional issues identified, or to restore
areas where excavation works will be required. Removal of risk works could
include such works as realignment of sections of sewers away from the channel,
removal of abandoned infrastructure, or purchasing of private property to provide a
larger meander belt and erodible corridor for the channel to adjust. This alternative
could include minor or major infrastructure changes, but will typically include
localized remedial works within the channel (i.e., recreating the channel bed and
banks using a combination of natural channel design techniques, as well as more
traditional engineering and bioengineering methods).
During construction, this option would have varying levels of disruption to property
owners, local residents, and habitat (including existing vegetation). This will
Aquafor Beech Limited 66685 5
Page 17 of 132
Schneider Creek August 11th, 2020
City of Kitchener
depend on the scope of the works associated with the infrastructure realignment.
However, once complete, not only will the existing erosional issues be addressed,
but also the threat of future erosion risks will be greatly reduced. All disrupted
areas would be restored within the site, including appropriate plantings and seed
mixes designed to provide stability and sustainability, with a long-term
management plan to restore the riparian and terrestrial habitat functions.
4 Evaluation of Alternatives
Evaluation of alternatives involves establishing alternative solutions based on the
study objectives, technical considerations and relevant evaluation criteria. The
evaluation criteria include the four main categories of Physical/Natural
Environment, Social/Cultural, Economic, and Technical/Engineering.
4.1 Description of Evaluation Criteria
The evaluation criteria considered in assessing each alternative solution are shown
in Table 1 below. A score was established through a multidisciplinary evaluation
process for each alternative design, for each criterion listed. The score for each
alternative solution ranged from 1 to 10. A score of 1 indicates that the alternative
solution scored low in relation to the criteria. Alternatively, a score of 10 indicated
that the alternative solution scored high in satisfying the respective design criteria.
The overall preferred design was then based on an aggregate score from all the
design criteria, normalized such that each category represented 25% of the total
possible score. The intent was to identify the preferred retrofit design options.
Further details of the evaluation process, including methods used in assigning
scores for each criterion, can be found in the 2016 ISWM-MP report.
Aquafor Beech Limited 66685 6
Page 18 of 132
Schneider Creek August 11th, 2020
City of Kitchener
Table 1: Criteria used in Evaluation Process for selecting the Preferred Alternatives
Environmental
Criteria
Assessment Categories
Physical/Natural
.
Potential Aquatic Habitat Benefit (Water Temperature)
Environment
•
Potential Aquatic Habitat Benefit (Fish Passage)
Potential to Reduce Erosion of Public Lands
Potential to Reduce Erosion of Private Lands
Potential to Reduce Stream bank and Stream bed Erosion
Potential to Enhance Groundwater Regime
Potential to Reduce Flooding
Potential to Improve Terrestrial Habitat
Integration with Existing Infrastructure
Integration with Existing Environment
Social/Cultural
.
Aesthetic / Recreation
•
Compatibility with Adjacent Land Use
•
Community Disruption
Public Health and Safety
Economic
•
Construction Costs
•
Operation Maintenance
Infrastructure Protection
Technical/Engineering
.
Ease of Implementation
Agency Acceptance
Policy/Bylaw Requirements
Technical Feasibility
4.2 Evaluation and Selection of Preferred Alternatives
The above evaluation process was completed for each of the three addendum
reaches, containing the four secondary erosion site opportunities. The following
includes brief descriptions of the alternatives for each of the sites, as well as the
selected preferred alternatives as summarized below in Table 2 and detailed in
Appendix D. Concept designs are provided in Appendix E.
4.2.1 Schneider Creek at Grand River Confluence (SC -IA)
Do Nothing (SC -1A)
The Do Nothing alternative for the erosion site in Reach SC -1A would be to allow
bank erosion and scour around the manhole to continue, increasing the risk of an
uncontrolled breakage during a flooding event. Leaving the manhole in the channel
would continue to put additional hydraulic stress along the bank, risking failure of
the decommissioned manhole structure and forcemain sewer pipe, as well as
possibly putting the new forcemain sewer and adjacent manholes at risk.
Aquafor Beech Limited 66685 7
Page 19 of 132
Schneider Creek August 11th, 2020
City of Kitchener
Local Works (SC -1A)
Under the Local Works alternative for Reach SC -1A, the former rip -rap or boulder
bank protection would be replaced and repaired around the decommissioned
manhole, continuing upstream and downstream about 15 metres. The total length
of the bank protection works would be about 30 metres. This alternative would not
include removal of the manhole structure from the channel.
Reach Based Works (SC -1A)
The Reach Based Works alternative for Reach SC -1A would involve channel
restoration and stabilization works for about 120 m of Schneider Creek from Old
Mill Road down to the confluence with the Grand River. A retrofit solution for the
hydraulic drop and downstream scour conditions for the concrete drop structure
under Old Mill Road would also be considered in the design. Some minor channel
realignment, bioengineering of the banks, and cobble- boulder- riffle structures on
the bed would be proposed to increase overall channel stability in the reach and
lower the risk to the decommissioned and active forcemain sewers within the
valley.
Removal or Risk (SC -1A)
The Removal of Risk alternative for Reach SC -1A recommends removing the
decommissioned manhole structure from the channel, including:
1. Remove and dispose existing maintenance hole riser section to below
elevation of approx. 274.50 - 275.00 in addition to the removal of existing
gate valve stem sections.
2. Abandon remaining riser sections and gate valve in place. Abandoned risers
sections shall be completed per City/OPS Standards.
Manhole removal works would also include about 30 metres of bank restoration
using bioengineering approaches of regrading and vegetating the banks with topsoil
and native plantings, as well as native -sized cobble stone at the bank toe. Future
risks to the old forcemain pipe associated with the removed manhole are
considered to be low based on the relative elevations of downstream scour pool and
riffle crest in the Grand River (see Figure 1-A in Appendix C).
Selected Preferred Alternative (SC -1A)
Removal of Risk was the selected preferred alternative for the Reach SC -1A erosion
site. Evaluation results are summarized in Table 2 and detailed in Appendix D.
The conceptual design is presented in Figure 2-A of Appendix E.
Aquafor Beech Limited 66685 8
Page 20 of 132
Schneider Creek August 11th, 2020
City of Kitchener
�cnneider Creek upstream of O/d Mil/ Road (SC -1B)
Do Nothing (SC -1B)
The Do Nothing alternative for the erosion site in Reach SC -1B would be to allow
bank erosion to continue toward the gravel trail, eventually allowing the channel to
come into contact with the trail again. Although the trail was recently realigned,
there is location at the upstream end of the site where the buffer is less than 2 m
between the channel and the trail. The erosion rate would continue to be
monitored by the City and the trail would either need to be successively setback
from the channel bank by 5-10 metres every 10-20 years (assuming a 0.5 m/yr
erosion rate) or the trail could be realigned a greater distance from the channel to
be outside a 50 - 100 year erosion hazard limit (i.e., future consideration of the
Removal of Risk alternative).
Local Works (SC -1B)
Under the Local Works alternative for Reach SC -1B, erosion protection measures
would be proposed for the eroding bank along about 150 metres, likely including
some combination of stone -toe protection (boulder or rip -rap toe, rock deflectors)
and bioengineering using native plantings and/or wood structures (e.g., cribwalls,
log deflectors). More substantive armourstone retaining wall structures could also
be considered. The life expectance for softer stone -toe and bioengineering
measures that are more environmentally sensitive would be about 10-20 years.
Harder amourstone retaining wall structures might last 20-40 years depending on
the design factor of safety and City maintenance schedule with respect to the
horizontal and vertical tie-ins of the wall into the bank and bed of the channel.
Reach Based Works (SC -1B)
The Reach Based Works alternative for Reach SC -1B would involve channel
restoration and stabilization works for at least 350 metres of Schneider Creek
upstream of Old Mill Road, and possibly including a total of 500 metres to address
additional upstream erosion along the -900-metre-long reach. A retrofit solution
for the hydraulic drop and downstream scour conditions for the concrete drop
structure under Old Mill Road would also be considered in the design. Channel
realignment, bioengineering of the banks, and cobble- boulder- riffle structures on
the bed would be proposed to increase overall channel stability in the reach and
lower the risk to the adjacent recreational trails and park space.
Removal or Risk (SC -1B)
The Removal of Risk alternative for Reach SC -1B recommends that about 200
metres of recreational trail be realigned a greater distance from the channel to be
Aquafor Beech Limited 66685 9
Page 21 of 132
Schneider Creek August 11th, 2020
City of Kitchener
outside a 50 - 100 year erosion hazard limit, which will also require some impacts
to the terrestrial environment and trees. Same as the Do Nothing alternative, this
option allows the channel bank to continue eroding and for natural fluvial process
to continue within the creek corridor. If keeping the trail alignment adjacent to the
channel achieves other priority recreational objectives, the trail could be
successively realigned and setback from the channel bank by 5-10 metres every
10-20 years (assuming a 0.5 m/yr erosion rate).
Selected Preferred Alternative (SC -1113)
Do Nothing was the selected preferred alternative for the Reach SC -1B erosion site.
Evaluation results are summarized in Table 2 and detailed in Appendix D. The
conceptual design is presented in Figure 2-113 of Appendix E.
4.2.3 Schneider Creek in the Southwest Optimists Sports Fields (SC -3B)
Do Nothing (SC -3113)
The Do Nothing alternative for the erosion sites in Reach SC -3B would be to allow
bank erosion to continue toward the gravel trail, parking lot, and storm water
outlet. The erosion rate would continue to be monitored by the City and the
infrastructure at risk may eventually be undermined and damaged by erosion and
flooding around the creek channel. It is expected that the erosion risk will likely
require some mitigation in the future by some combination of either implementing
erosion controls (i.e., Local Works) and/or moving the infrastructure away from the
channel (i.e., Removal of Risk).
Local Works (SC -3113)
Under the Local Works alternative for Reach SC -3B, bank restoration and erosion
protection measures are recommended for the eroding banks along about 160
metres of the channel, roughly split evenly between the downstream site at Pioneer
Drive (SC -3B -A) and the upstream site at Homer Watson Blvd (SC -3B -B). The
recommended approach includes minor channel realignment with stone -toe
protection (native -sized cobble) and bioengineering by regrading the banks and
stabilizing the slopes with native plantings.
In the case of the downstream site SC -3B -A, a buried armourstone retaining wall
structure (or equivalent) is recommended to protect the parking lot from future
channel migration. Future parking lot reconfiguration is to be completed based on
a parking needs assessment prior to completion of hard surfacing (traditional
asphalt, permeable asphalt, permeable pavers, porous concrete, etc.) and
formalization with curbing. The recreational trail may be realigned through the
grass median within the parking lot.
Aquafor Beech Limited 66685 10
Page 22 of 132
Schneider Creek August 11th, 2020
City of Kitchener
For the upstream site SC -3B -B, the drainage issue is to be addressed by installing a
formalized outfall with headwall setback from the channel. The new outfall
elevation is to be connected with the existing pipe using a combination of a
conventional drop structure and a soakaway pit. Possible retrofit of the adjacent
Region of Waterloo SWMF 174 on the north side of the channel, and repair of the
connecting rip -rap lined outfall channel, may be assessed as part of the project.
Reach Based Works (SC -3B)
The Reach Based Works alternative for Reach SC -3B would involve channel
restoration and stabilization works for at least 400 metres of the 850 m long reach
on Schneider Creek between Pioneer Drive and Homer Watson Blvd. A series of
local channel realignments, bioengineering of the banks, and cobble- boulder- riffle
structures on the bed would be proposed to increase the overall channel stability in
the reach and lower the risk to the adjacent recreational trails and park space.
Removal or Risk (SC -3B)
The Removal of Risk alternative for Reach SC -1B would involve reducing the size
and footprint of the existing parking lot by about one third to provide an additional
setback of 25 metres from the channel. Same as the other alternatives for the
downstream site SC -3B -A, the recreational trail may be realigned through the grass
median within the parking lot. Trail realignment for the upstream site SC -3B -B
should also be considered to move it outside of the 50 - 100 year erosion hazard
limit. Risks to the storm sewer outlet would still need to be addressed by
formalizing the outfall.
Selected Preferred Alternative (SC -3B)
Local Works was the selected preferred alternative for the Reach SC -3B erosion
sites. Evaluation results are summarized in Table 2 and detailed in Appendix D.
The conceptual designs are presented in Figures 2-C and 2D of Appendix E.
Aquafor Beech Limited 66685 11
Page 23 of 132
Schneider Creek August 11th, 2020
City of Kitchener
Table 2: Evaluation of Alternatives Summary of Results
Site
Category
Do
Nothing
Local
Works
Reach Based
Works
Removal
of Risk
SC -1A
Physical/Natural Environment
8
12
10
14
Social/Cultural
7
14
11
13
Economic
13
13
12
13
Technical/Engineering
16
15
8
15
Total
44
54
41
55
SC -1B
Physical/Natural Environment
12
11
10
10
Social/Cultural
7
14
11
12
Economic
14
11
12
14
Technical/Engineering
22
14
8
18
Total
55
50
41
54
SC -3B
Physical/Natural Environment
8
14
10
14
Social/Cultural
6
14
11
5
Economic
13
13
12
8
Technical/Engineering
16
14
8
9
Total
43
55
41
36
5 Summary
This addendum study to the 2016 City of Kitchener Integrated Stormwater
Management Master Plan is to update the preferred alternative for Schneider Creek
at Old Carriage Road (SC -2B) to permit the simultaneous advancement of three (3)
additional smaller projects located adjacent to the immediate work area, including
four (4) erosion sites. Due to changes in conditions identified by the City, three
addendum reaches were reassessed in 2020 for comparison with the 2015
conditions. The selected preferred alternatives for the three addendum reaches SC -
1A, SC -1B, and SC -3B are Removal of Risk, Do Nothing, and Local Works,
respectively. Considering the change in conditions at two of the three addendum
reaches, along with the proximity of these sites to the primary erosion site SC -3A -
C, it is proposed that the EA recommendations be updated to implement the
selected risk mitigation works at the three secondary erosion sites as identified in
reaches SC -1A and SC -3B.
Aquafor Beech Limited 66685 12
Page 24 of 132
Schneider Creek August 10th, 2020
City of Kitchener
Appendix A
ISWM-MP EA Erosion Site Figures and
Concept Drawings for Primary Erosion Site SC -2A -C
Aquafor Beech Limited 66685
Page 25 of 132
�gSPt oapO S � �2U
SHPN �a
z @ z
o� O
_ U y
3
Q � h
�' .Y� 1 SSIEMEN� RO
W ci 1 01GK\E SE
Z
O W �_
w
m
C031
m
ID
Z U
vG e'v J U 7" y
C
I Np W (n G
i br y C7
p -- 7.. �✓
9
cn ¢9 t
O _ H
a N
M JS 2i i1 VONVI
In
"ES MA01) N11E
Of
O �
G N �
O �
O
Y
N
'
U
v.E
N N
E�
L
i
n
y
m
� 0)
S =
Z)
Baa
7
No
Q
ff w
O L
Q Q N
L�
U+1 4- N
O
oQ
c
O N
O
m
m
w o
t%
O
N
¢ 2-
$ ami m
o
c 05
O
N
w
N
m
g
y _
r
C
N I
o
J
�gSPt oapO S � �2U
SHPN �a
z @ z
o� O
_ U y
3
Q � h
�' .Y� 1 SSIEMEN� RO
W ci 1 01GK\E SE
Z
O W �_
w
m
C031
m
ID
Z U
vG e'v J U 7" y
C
I Np W (n G
i br y C7
p -- 7.. �✓
9
cn ¢9 t
O _ H
a N
M JS 2i i1 VONVI
In
"ES MA01) N11E
Of
O �
G N �
O �
O
a � /
��`. 5
(f
6
s
E
U o m
O
W PtN gtN U
G FOUN Z
U �
OLV_ W 1 p1GKtE St,
Q U) U
a > > w Gy��, c U
CO
p U
w w ;
m C
L L o
N N U O
d1 1
a
N Q 6 O
C7 Ur' D cD q � CJ
U t
D w w Z
m v
of 0] r r. M
O
N i 4i
to
m m
[o a a
C O
U)
u X
/
Q w
N G
m �
N
i
_
W LJ
� FtSGHER�
P
T
ID N
a a
O
N ro
ED A
(n
wstm OUNT RDE
z�
^q is
g
r�
�+
a
,
U
Y
O
s=
GS d
al
dy"�
u
(D
Y m m
0 0-
=
—.
N
Q1
w �j
M
m
aye
aJ
N 7
E -=
5
^
co
O O
u
C i
G
a
a
) O
N Q
Y d
4- d N
o m
m
o
r
a`
W 0 �
o
T . .
o
.. .� M
N
T
C
j 3
65
W W W
d
W
Jim"
0
a � /
��`. 5
(f
6
s
E
U o m
O
W PtN gtN U
G FOUN Z
U �
OLV_ W 1 p1GKtE St,
Q U) U
a > > w Gy��, c U
CO
p U
w w ;
m C
L L o
N N U O
d1 1
a
N Q 6 O
C7 Ur' D cD q � CJ
U t
D w w Z
m v
of 0] r r. M
O
N i 4i
to
m m
[o a a
C O
U)
u X
/
Q w
N G
m �
� HP`LMPN ftDS5.
i
_
W LJ
� FtSGHER�
P
T
ID N
a a
O
N ro
ED A
(n
wstm OUNT RDE
z�
^q is
g
r�
a
S
Y
O
s=
al
dy"�
N
(D
v s A
c v
—.
N
Q1
w �j
_
aye
aJ
/
a
r
-1� Z
-
F—
OU
C)
�
J Ur
CII)w
z 7i
❑ F W F d Z
ZQ
Q Z K 2
m 3 a v
i
as
z
tj�
y w
Z
O
ww
z
W Z O
r
Lu
U' d
a eV
a. O
LL
w
J
m
U
oLL
c
�hW
U
o
��
LLo
O
-- i O /
i
p d m li
2
,qj I I II
T
e
a
W
co o
LLIa
i/
I
O��'
L y Q 1
J'M( f
o` p W C
a
o
g
m
eIL311WII
,II'Y�TII"�Ii-lll���F��
RI'IEI I�"�311'"7�1 IE��I`g
Eft.
�z
`
O
a
LL,W
IL IL I
d
_ w.
��� a
r����a�����
\
y
_
Z
u
"—� W
W
\�
w U o N
1 I
\s
? � I
— I
— I
I
K
a
-
1
$
LU
v u'
0
� L '� eS
..
Lille
—
16
N m
i�
eull AVedwd
e
Q
p V m CO�� n
� —.. OI
SLI
w�
j�
Q
LU LLI S?
v f W .� w
IL
eun Aueawd
..
1 iL
mm
> ° a06
Lu y .I_
v�
U
Z00
N
w
ccc
I„
i
-l�LD
J i;fC-1N4 F
O
oi
24 C,4
LLm
3 a
O
LL
�l O
CLLJ 7
LLJ w
J M
U m
�LLQ
y J =
N
m
Lr Q
ry:
O
l w
in
�0
eu �Ryedad ``\
9�/
1
YN
U w o
;�
o
_
6°
t7 is
W
c< oco E� m U `m w`i
I nr �`
TTW
a" _57
U
W
C5
j•, r I
i I� X Gull Apedwd 1
ui e
1
a
W
w f
i , m I $
U
/ °{I
� cv v m
\\ \ �I � a x I) _
V Im
it I• I =
A
mo
Q
01
x i'
W
a �
��
w
y
W
LL
\\ >> m"
? v mo
> ' _
�` I
m o'
a
1 I$ !z
yr e
W
a
LLJ
°I� ° — a.
3 3 �� euilRNeaad
X 1-
00.1
�4 • eeuiI,tueaad10
o
I$ a
i.
i
!a
LU
W F
cr
�cr
U
W
oO
O
= m
2.10
/ e
c� av
��
I
E
i
Schneider Creek August 11th, 2020
City of Kitchener
Appendix B
March 26th, 2020 Existing Conditions Report with Photographs
(Presented to City Staff May 4th, 2020)
Aquafor Beech Limited 66685
Page 30 of 132
City of Kitchener _
Schneider Creek EA Addendum
Integrated Stormwater Management Master Plan
May 4th, 2020
SC -313 Trail Management SC -1A: Manhole
& Creek Realignment
SC -1 B: Trail
Management & Fish
Barrier Removal
�.* SC -2B -C ISWM-MP
i Preferred Alternative
(Attachment Ay
ISWM-MP Erosion Assessment
Primary Opportunities
08/06/2020
Page 31 of 132
E,
Watercw�A
Ip
Fied IDI
Date
g
and LmKim
Reach
Ler th
Rrsk
RescaraamlieenYl 11pParwrilks
S drwJper at Old Carriage
Sr -25-C
16 &4O9
-AA -15 SOD m
� 0p erh'
- Ye:
- -
53
M 72
abtat
Er0*W$ftM6WLdtiAt
Sdrxider Creek
5016
18
09-JW�15 -
Trail mwagettem
_ Yrs
- -
46
15 61
near viwwcovrw
S dwJdc Creel
3036
18
O9 -Jails -
Trail rn&+aWfterR
141
- -
41
20 51
near wetereoursr
$ dnndder Crttk
3036
17
09 -M -Is -
Trail raanagernem
141
40
70 60
r yr Ymterewrse
idwmder at Grand River
S01A
40
09-jul-15 -
FarCed �cary
Abd -
- -
38
10 +.
maihple
08/06/2020
Page 31 of 132
ISWM-MP Erosion Assessment
Primary Opportunities
Coy If M+Yr ha++9 r
Sto—..Wr Management
M -w Plan
Ap�+3lb de•_-i��
Schneider Creek at Old Carriage (SC -213-C)
s .
\ '.. ,+9•y ��i• �.+au,.r.,.. Y+Rv*-omro�e rw.sutir+c+.
s
.... �, .-• °."""'."s'a as s� rte......
47
...
.--_.-
Isczamlex.r,rnnc+...rr. FIWRE
A cneexaro�o cnA�aae- EXISTING CONDITIONS
MY OF KITCHENER 12A.15
08/06/2020
Page 32 of 132
2
Schneider Creek at Old Carriage (SC -213-C)
List of Alternatives
MitigationLong
— Erosion h
1. Do Nothing
; Examples of Local Works
• Must be considered as part of the
Municipal Class EA process
_
: A Armourstone Wall
®Vegetated Rack Buttress
• May be preferred where, for example,
other alternatives have extensive
environmental impacts or are
economically not feasible -
J M��
—.--------- - -- --_ -- —.. ----
----- --- - .-•-
—:
------------------
2. Local Worksa'
SCNNEIDEFCREEKATatDC RaFl - ntr.M-w 4ee
laczacl PREFERRED ALTERNATIVE CONCEPT • REACH BASED WORKS FlWRE
Gftr or KITCHENER 12,9.76
• Localized erosion mitigation
to address critical erosion
—
risks over years to decades
• Does not address future
long-term erosion issues or
: Riffle -pool Sequence
�. BioangineaAng
maintenance casts
son
>. Reach -Based Works
4. Removal of Risk
• Channel design over
longer distances
• Balance between"hard"
control and "soft"
restoration approaches
Remove infrastructure or
property from hazard zone
Remove trails or future trail
relocations within corridor
Easements or land acquisition
• Higher costs and
within hazard zones
disturbance of habitat
Schneider Creek at Old Carriage (SC -213-C)
J M��
—.--------- - -- --_ -- —.. ----
----- --- - .-•-
—:
------------------
SCNNEIDEFCREEKATatDC RaFl - ntr.M-w 4ee
laczacl PREFERRED ALTERNATIVE CONCEPT • REACH BASED WORKS FlWRE
Gftr or KITCHENER 12,9.76
08/06/2020
Page 33 of 132
SC -213-C: Schneider at Old Carriage
March 2612020
a
'w
08/06/2020
Page 34 of 132
4
SC -213-C: Schneider at Old Carriage
March 261 2020
z vt�
08/06/2020
Page 35 of 132
5
SC -213-C: Schneider at Old Carriage
March 26, 2020
zk
7
-Ji
FFF
08/06/2020
Page 35 of 132
5
SC -213-C: Schneider at Old Carriage
March 261 2020
A�74 {
Ads
SC -213-C: Schneider at Old Carriage
March 26, 2020 N1
0�
0,77 f
pq
08/06/2020
Page 36 of 132
6
SC -213-C: Schneider at Old Carriage z.k°
March 26 2020 - _ Y�
r
. z
n.r
i
City of Kitchener Aquafw aQech J
Schneider Creek EA Addendum
Integrated Stormwater Management Master Plan
May 4t", 2020
SC-3B:Trail ManagemenS SC -1 A: Manhole
& Creek Realignment
�. SC -1 B: Trail
Management & Fish
Barrier Removal
SC -2B -C: ISWM-MP
Preferred Alternative
(Attachment A)
08/06/2020
Page 37 of 132
7
SC -1A: Manhole
March 261 2020
an
4, r
A
4yrac'} y
4 41
08/06/2020
Page 38 of 132
08/06/2020
Page 39 of 132
SC -1A: Manhole
March 2612020
v
08/06/2020
Page 40 of 132
10
SC -1A: Manhole
March 261 2020
Wit, r
N11
SC -IA: Manhole
March 26, 2020
08/06/2020
Page 41 of 132
SC -1A: Manhole
March 261 2020; -�
08/06/2020
Page 42 of 132
12
Schneider Creek (SC -1A) Manhole
-0/
A XS -1 CREEK PROFILE A'
00' 1
27
Y.5.2 • GREEK THALWEG
KITCHENER W.W.T.P. - OLD MILL P.S.
'r
Aq I
naF-
�iiiiiiiiiiii
NFE
X6,3 CREEK PROFILE 2 v
--j
Schneider Creek (SC -1A) Manhole
08/06/2020
Page 43 of 132
13
-0/
KITCHENER W.W.T.P. - OLD MILL P.S.
'r
Aq I
�iiiiiiiiiiii
NFE
08/06/2020
Page 43 of 132
13
08/06/2020
Page 44 of 132
14
SC -113: Trail Management
March 26, 2020
08/06/2020
Page 45 of 132
15
08/06/2020
Page 46 of 132
16
SC -313: Trail Management
March 2612020
4�} --.1 W1�rwyle�l
a�
08/06/2020
Page 47 of 132
17
SC -313: Trail Management
March 261 2020
SC -313: Trail Management
March 2612020
08/06/2020
Page 48 of 132
a
SC -313: Trail Management
March 2612020
08/06/2020
Page 49 of 132
19
Schneider Creek (SC -313) Trail Management
xnrea aH ea .ev. r,,
( Stantec
Ar
Mid
PI
!t r N- 1 k f
HtM1f
Schneider Creek EA Addendum Alternatives
Alternatives:
1. Do nothing
- monitor erosion
2. Local works
- regrade, bioengineering
- or hard bank
protection?
3. Reach -based works
- SB -2B -C
4. Removal of risk
- trail realignment
- drainage management
SC -3A: Manhole
- cut and remove manhole
- pipe not at risk
- bioengineering of bank
r,
SC -1B: Trail Management
- Continue monitoring erosion rate
- Future trail realignment
SC -36: Trail Management (south)
- regrade bank, bioengineering
- buried armour layer, retaining wall
SC -IA: Trail Management (north)
- control field drainage to watercourse
- regrade slope, bioengineering
08/06/2020
Page 50 of 132
20
Schneider Creek August 11th, 2020
City of Kitchener
Appendix C
2020 Existing Conditions Drawings for Addendum Reaches
(SC -1A, SC-lB, SC -3B)
Aquafor Beech Limited 66685
Page 51 of 132
O
CD
X11= X11--
N �
L
(D;
�
h Q d
1111, 1111=11111
all X11= ill x
Ill P
a W
c
m ai
f6
�
D C)
C7 LL
c7
L
0 3�Y
I�o )
� 11111=III�II�II=11$
W
N
X
> C'
v
a N
Y �
m
c� w
m o d
7
�
I
° LL E
1` �
Q T G
o80L
I
G G a�
m �
II
(n c
O —
I
I� ISI I I I I s
I I IEII I=Ill Hall I
W
Elllall=lI SIIVIIIry
aN
N
I
I
WCL
\�
� j
ry �ll�ll�lll�ll�llllo
n �
---�aa��aapiauy�S
�llf
ry I A Will l ll I 111-
ry ry ry ry ry ry ����mil
I I I� 11=111 I I� 11=110
X11= X11--
N �
L
;
W
h Q d
1111, 1111=11111
all X11= ill x
Ill P
E
C N - U
f6
O...p O -
U)
C7 LL
c7
L
0 3�Y
I�o )
� 11111=III�II�II=11$
W
-� LL 5,154:
> C'
v
a N
(0 N 2
m
c� w
m o d
°
E a
l m �
° LL E
e rn III I 11=11
Q T G
o80L
N n
ow II Illi$
rll Ill�a
G G a�
m �
II
II Ill
I� ISI I I I I s
I I IEII I=Ill Hall I
�llf
ry I A Will l ll I 111-
ry ry ry ry ry ry ����mil
I I I� 11=111 I I� 11=110
X11= X11--
,��
Hill —
. I I -I I I 11 E.
I I II1=11I� I I� I1=11
�
1111, 1111=11111
all X11= ill x
Ill P
I II I� Ill
r Fr
llEliMllEllm
� I ll
$
IIIII-- IIIII HE
3lll IIll
11�H=mii-lllll IEgm
� 11111=III�II�II=11$
wIll
11 HE ll
IEIllllHE
IIaII=IIIII—II 2
t— ll$
> C'
v
a N
N
� —
c
m
c� w
N II II I II HE
cD =11 IMI—II
�llm
°
E a
II II II Illi$
mll s
° LL E
e rn III I 11=11
Q T G
o80L
N n
ow II Illi$
rll Ill�a
G G a�
m �
II
II Ill
I� ISI I I I I s
I I IEII I=Ill Hall I
lll ll�
Elllall=lI SIIVIIIry
`K
11II II IIll=
—IIHE 1 SII-
°�
^� � �
II�II�III�II Illlm
ry ry �� ry
ry �ll�ll�lll�ll�llllo
N
M
cn
z
0
C)
z
O
u
CD
z_
X
W
Z
Q
c�LLI
Z
QQW
YIli
w cn
U .__.
W
W C> L16
Wz0
o w
W J
OOCi
Ul O
Z
O
w
wmin
W M
�
CD
O
UZ
0
a
z of LU
w z w
z o a a
o
1
f.
H
1p
Z
WLL
J
i
•
I
I�
Q
a
O
O
f m
oz
0 ¢ O
;
O ..=
Grand River
oP
`w
Q ado
v
v
L
nn11 1 lllrvl�
III I n� II -n
$
lllIII�I�II
EE
r'
\
HIMME11,17111,101110111-111 1I -
I TI11 HE II=III 11 I ^
Z
I�
I II=III�II �I��I�III�II-�
O_
~_
(D
R
=ts
(n
OD
OD
11 11 -IIIA HEN
U
Vl
---------
0
-`I Q
m 0
ce
�III�II-T III Is
CD
H
�)
0>
i
��
O
~
V
C
W
m
W
I
N L
II�11 II-III�I-
—
—lll—
X
W
U
l3X
�sx
—
M $
11 11 11
I
i ❑
o�-v
C
LU
—II�Iy�-11111
IILII—I I� I�
——I A
/
I
I
I
I
_
^'
� - R
IIEIIIEIII—IIIEIII— —lII-I
SII
pQ
O
/�
I
"»�"m
LU
11=111�11�11�1�111�11=R
/�`
�11�11�11=III�II III�II�I
p
LU
O W
Y V
_-
I I- �
�II�II�III�III�II�I
w
w F
LLu
11
ry ry ry ry ry n
11-11... I I... 112 11-1119. E.
n n ry n ry n n ry n
w m
z I
U u
f
')-
< \\
s
zw v
0 ow
w f' cr. .
CD�
zO
ZEE w
U Z z OZEN
z o a a <~
O
LU
g
0
q ? a o ( E
if -V
fl LL
c c aha
0 0
o a
.. n
Q a
q
-
% III 11—I I I11111111 11 I I—III IRI
�
X11= X11 X11= �1
11—III l l� l m
II��IE11II��-1��IEEIII�� II—III�II=11—I1IIllI���I'I��'1'=$
1 11-11 1 El11-111 11-11 I
cn
IIIIIIII�I� z
❑ J 1111=111EI11=111=I1I11��I1I1==11111
HEM I II I 11-1111 11-111 11-M 11-11 11 11 _IIr
~
c �II z
❑ o o o SII- 11EI11=�1IIEIIIII 11 11="
-- �5---
a
I
omaIII„II„III„II„11111-R CD
JSX �,�-111�11�11 III�II 11111=�
of wlll,, 11 ll1 1R cn
x
�S `�\ c = .. I ISI IIIII ISI IIIII�I�I-I � II
j O N J -lll -lll-I -LL
I O
�❑ �. I i � J m m -o � � �'
I`------- --- -----'I Q Q �R
au l l4jadad = �
,� � /-
dII Illll�ls
❑ W�- �I1=1II�I1=III�I1=
C6 j rR'2` �c�III R LLJ
i
mIIIII�I
LU
to 11 11
m xLLJ
X11=11111=III�II=”
z
Ll
!� v12
W
z
aui
Q o r / 1111=111�1a <
Q W
II�II—III�II—III�II=-
3LU�II w
y c II II�II II�III�I � w F
❑
HE 11-111 1 � I
LLJ m O
❑ �����
11-111.II IIBIL w
u
zcn
❑❑
Z
LO
�a�
WWN
O
r
CD �a
~
J
w
0 0 o
O E
=
Z
U
¢
Z z o
w
z
z w
o a a
/�
ofLLJu¢i
O
t~/J
i%/.
-
J
0
O
Z
•
A
%
0
Tr t
u
1
�
CL
O
N
I
3
I
\LLJ
LO
�a�
WWN
r
CD �a
�o
O
0 0 o
O E
¢O _ m0
a =goao
O sao
Q cryo
i
OdO� NO21nN
i
cn
z
0
0
z
0
U
CD
z
F-
X
W
������� n=n=n n�-
jI=11�IIPIIP
al n nl�ll
.,R Pn�n I�il�l I�il�l
nen n�
•I�Ip��������
II�IIPIIP - e
n '�' nll I---I7f�lil�l Iii IKI -
iip nnlll�i nLLJ
.
null 11 n :rir •LU
� r i�r rel i Iln
�r
LUn n n ill ppp ..
.R li I�rl'll n'll n Iii ISI Iii Ikl
I nnn nLLJLLJISO u..
Doe CO LL.
j Tp��p�����771k7�fF��IIp
If�III�II�IIP7fF-17frI IIPII
7III�I'IIII.--.�I�I--III . •
Ljj
lfo"71C"•~iF'S-'I•Cr'r 17fo71Cnri'H~'
..
Schneider Creek
City of Kitchener
Appendix D
Detailed Evaluation of Alternative Results
August 11L1, 2020
Aquafor Beech Limited 66685
Page 56 of 132
SC -1A
Reach SC -1A
Evaluation Criteria
DO NOTHING
LOCAL
WORKS
REACH BASED
WORKS
REMOVAL OF
RISK
1. Physical/Natural Environment (Score out of 25%)
8
12
10
14
Potential Aquatic Habitat Benefit (Water Temperature)
5
3
2
6
Potential Aquatic Habitat Benefit (Fish Passage)
5
3
2
6
Potential to Reduce Erosion of Public Lands
1
6
6
6
Potential to Reduce Erosion of Private Lands
5
5
5
5
Potential to Reduce Stream bank and Stream bed Erosion
1
6
7
6
Potential to Enhance Groundwater Regime
5
5
5
5
Potential to Reduce Flooding
5
6
6
6
Potential to Improve Terrestrial Habitat
2
6
3
6
Integration with Existing Infrastructure
2
4
3
3
Integration with Existing Environment
2
4
2
6
2. Social/Cultural Environment (Score out of 25%)
7
14
11
13
Aesthetic/ Recreation
4
5
6
5
Compatibility with Adjacent Land Use
2
6
5
6
Community Disruption
3
6
1
5
Public Health and Safety
2
6
6
5
3. Economic Environment (Score out of 25%)
13
13
12
13
Construction Costs
10
5
1
4
Operation and Maintenance Costs
5
5
6
6
Infrastructure Protection
1
6
7
5
4. Technical/Engineering Considerations (Score out of 25%)
16
15
8
15
Ease of Implementation
9
7
2
7
Agency Acceptance
4
4
2
4
Policy/Bylaw Requirements
4
6
6
6
Technical Feasibility
9
7
2
7
Total Normalized Score (1+2+3+4: Score out of 100%)
44
54
41
55
10 = indicated that the retrofit design alternative score high in satisfying the respective design criteria
1 = indicated the retrofit design option scored low in relation to the criteria
Page 57 of 132
SC -1B
Reach SC -113
Evaluation Criteria
DO NOTHING
LOCAL
WORKS
REACH BASED
WORKS
REMOVAL OF
RISK
1. Physical/Natural Environment (Score out of 25%)
12
11
10
10
Potential Aquatic Habitat Benefit (Water Temperature)
8
2
2
5
Potential Aquatic Habitat Benefit (Fish Passage)
8
2
2
5
Potential to Reduce Erosion of Public Lands
2
6
6
5
Potential to Reduce Erosion of Private Lands
5
5
5
5
Potential to Reduce Stream bank and Stream bed Erosion
2
6
7
5
Potential to Enhance Groundwater Regime
5
5
5
5
Potential to Reduce Flooding
5
5
6
5
Potential to Improve Terrestrial Habitat
4
6
3
1
Integration with Existing Infrastructure
3
4
3
1
Integration with Existing Environment
4
3
2
1
2. Social/Cultural Environment (Score out of 25%)
7
14
11
12
Aesthetic/ Recreation
4
5
6
4
Compatibility with Adjacent Land Use
2
6
5
6
Community Disruption
3
6
1
4
Public Health and Safety
2
6
6
5
3. Economic Environment (Score out of 25%)
14
11
12
14
Construction Costs
10
4
1
5
Operation and Maintenance Costs
5
3
6
6
Infrastructure Protection
2
6
7
6
4. Technical/Engineering Considerations (Score out of 25%)
22
14
8
18
Ease of Implementation
10
7
2
10
Agency Acceptance
9
3
2
4
Policy/Bylaw Requirements
6
6
6
6
Technical Feasibility
10
7
2
8
Total Normalized Score (1+2+3+4: Score out of 100%)
55
50
41
54
10 = indicated that the retrofit design alternative score high in satisfying the respective design criteria
1 = indicated the retrofit design option scored low in relation to the criteria
Page 58 of 132
SC -313
Reach SC -313
Evaluation Criteria
DO NOTHING
LOCAL
WORKS
REACH BASED
WORKS
REMOVAL OF
RISK
1. Physical/Natural Environment (Score out of 25%)
8
14
10
14
Potential Aquatic Habitat Benefit (Water Temperature)
5
4
2
6
Potential Aquatic Habitat Benefit (Fish Passage)
5
4
2
6
Potential to Reduce Erosion of Public Lands
1
7
6
6
Potential to Reduce Erosion of Private Lands
5
5
5
5
Potential to Reduce Stream bank and Stream bed Erosion
1
7
7
6
Potential to Enhance Groundwater Regime
5
6
5
5
Potential to Reduce Flooding
5
6
6
6
Potential to Improve Terrestrial Habitat
2
7
3
6
Integration with Existing Infrastructure
2
6
3
2
Integration with Existing Environment
2
5
2
6
2. Social/Cultural Environment (Score out of 25%)
6
14
11
5
Aesthetic/ Recreation
4
6
6
2
Compatibility with Adjacent Land Use
2
6
5
2
Community Disruption
2
5
1
1
Public Health and Safety
2
6
6
3
3. Economic Environment (Score out of 25%)
13
13
12
8
Construction Costs
10
4
1
2
Operation and Maintenance Costs
5
5
6
4
Infrastructure Protection
1
7
7
3
4. Technical/Engineering Considerations (Score out of 25%)
16
14
8
9
Ease of Implementation
9
6
2
4
Agency Acceptance
4
4
2
4
Policy/Bylaw Requirements
4
6
6
3
Technical Feasibility
9
7
2
3
Total Normalized Score (1+2+3+4: Score out of 100%)
43
55
41
36
10 = indicated that the retrofit design alternative score high in satisfying the respective design criteria
1 = indicated the retrofit design option scored low in relation to the criteria
Page 59 of 132
Schneider Creek August 11th, 2020
City of Kitchener
Appendix E
Concept Design Drawings for Addendum Reaches
(SC -1A, SC-lB, SC -3B)
Aquafor Beech Limited 66685
Page 60 of 132
N a>
Y 6
N U O Z
LE 0
O m X Cl)
N �
O S
L
W -0
a�
0
N Q
W x
W
i
i
i
\
Q)
c
co
C
of
I
a0
I
00
i
I
lapiauyjs
4
N
M
ry ry ry ry ry ry ������llf
ry I A 11-111 l Ial11-
I I I� 11=111 I I� 11=110
Hill —
X11= X11=-
,��
. —1II11 Ill
I I II1=11I� I I� I1=11
all1111, I�
— II =G, W
Ill�l�ll�ll�l�lm z
III 11—I I 11—El I I U
�IIIll111 11 cn
° 11- I l- 2 W
X11=III�II�II—II $ i oo�
m t— m
Q W
w —I—I
�ll z O
1101,�I I1 1111ll W J
X11=III�II�II—II LL] Q
llts a O
C W
� a � II II I I II Illi ° w
LL -
o Illi II Illl� - U W
z n II I" lll r o o W
-.0,0
11—I
c'~z
>N
6 ., >
m�`mz E rll 11 1111a
II Illi _ w
N v >
I1 N
—111 z Oil In _
ll< 0
cn
Z
I�IIll" - - <
_W
III�II-11 X11111 Q ¢ W
II 11 11 11 11 HE EN° wcnF
ll- ems Uwe
—1I I� I1=1I—I - O {L
lll ll _ o w
lllll v _ c Z w
lll ll� c = z
�v OOCi
111 I I—I I� I I I w o a U U
II�II�_�II�II�=ry o
llllllllll z N
a��m lll
ry ry ry ry ry ry ry rv� ry ry ry ry �
N
M
,.
O
F t7
U
¢ J
O ❑ ti w a z >
0 � N O a U C7
&
O LL
?p� � ,may .
x N
O¢
O
LTJ C'4
m a,
CIO
J
H
Q I
a m
o 0 0
m
m r2
a o
4
xoa
�
�30
Q ..e
v
v
01
U
In
/
K pe _
HEg"=WN111 1 24
III — _ IIIIII _
®111111HE 1 >
LIT
,$Ia.�II
r II -111 c c II IIIII�II— Q
— m Q Z
3.602
CD
I� a _I 1 6 01
W z
SE 11111 z° c `O 1111 11111=� Q
A O �❑ O O — ts O
c w _ _
W � 8
�sr — QJW
of
c o Q L�11 11 11 11-111 1-N
W
o II111 s W
a=1II�II—III I W
'm '111 _N
=
i5 �
0 11-4
� I1=11II1—I I M I II
� ILII-III�II=III�I $
c X11 �11�
O�IIII
m 11 1111-11111-$
c 1111=11111=1 N
w 11 IIIHE
�
_f
p
m 1=111 11 II II II II1 11 Q
O
II�II 11=11111—III�II I �
11-111=11IM I IPI p
1�11�11�11=11111=III�II�I m J
�IIe Z
IIIII�IIII- < W
Q
E �k —11111 TITI111�11== w F
�II�II�II—III�II—III�II�I `
® — m U
LL
LLJ C
11-11... HE II 11-111 E. w m
z j
(� u
1
'7
N
M
O
16
Z
O
W
�U
T o
C, N d
�
w
w
W
U
¢ H
0❑
}
ti
Q
n
ZEE w
Z H
ti z w
.....,
O 4>
9g�
goo
5�w
oLLJ
u O
<
LU
I-
O
Z
LL
N
M
O
16
o
W
�U
T o
C, N d
mm
.10
U
O K
W
m m^
O 4>
9g�
goo
5�w
Q cryo
m
LLJ
� o I�II�III�II-11111 Il�lll�lm z
�m III�I�II�II�II�II�I�II��$
a z r II -11111 II�II I�II��n
co
W V 1
E �—III—III i
J IIS r lII= 1111-111�11-
- — @ %in , 1-11 $ C
m o c A a Q O
o cY I,m� m z
@ - J — $ -2
Nva O c 1-oi I� @
'o af� 11- c u l l—I 31—III " z W W
E �+ m I� 11= 1=1I I� I1=" @ c
I-11111- ° $ Q
m' w ¢ = C7 1 0
?_J lll x oc Q J
—- — —�II
—I.m ��II III�I o m W
=1111ISI 11- G N
lll aE �
Ila W
— I m @ W
S N W
—III II III
a Il�ll�l111ll�a
ai — A c o
m m aw�l�adad
0 —a olllIl @o
�Z—III:c�-1II�IA °a
0,11� 11p m w 111 11= o u
_ c
'�_
�o Illll�ll1 0m w
`m o — ° a pj a o- >
mr 11�-111 FR
EwoW Na
o _ EII @ p
w� N—I'III�I °E
m m w 11IM ro Q 111 11=" 0 o �
SIIII R n = w
af R o n O �.
111-111:m W
_ o
—111 II II -111 @ <
Q W
II�II�II�II III�II-� �' E =
o
,m zcn
W
w
U Q
—111 II II III @
�II�II�II 11111=a o ° o m
w O
II �1 1�1�II-m a pW ul
" " " z c H
v _V
cn I
Z
"
O
zIl o
�'"
~
J
W
Q
.� E
U) S
ZZ
Y = K
Z
z
w
O Q
Z
ULLJ z o
W
z
Z W
o a a
O
LL
p
J
0
F W�
oe
•
O CO
O�
f0
Q
C
_
>
C @ C
0
Y
Ly a N
Tr
LL
>L
O- O O
LL fn U (n
O
Q
i+
CL
O
I
N
J
O
4 1 ,syr
E o
0 0
a
N
M
i
x
OdO-8NO21nN
i
N
-sir--sir=
z
0
Q
w
o 19W
Z
W
am=
LLJ
Y ci
w m
U U
O:e cn LL
w O
o
w
Z p _
UJ �%
(n m
"
a, � ¢�
zIl o
�'"
E w
Q
.� E
Q o
P
n w
LA
u
D U O U -
E
a
o m
p
� .1
m,N o
F W�
oe
O CO
O�
f0
C
_
>
C @ C
Y
Ly a N
>L
O- O O
LL fn U (n
O
OD >
-5
<
&0
O
- 0 0
i
i
x
OdO-8NO21nN
i
N
-sir--sir=
z
0
Q
w
o 19W
Z
W
am=
LLJ
Y ci
w m
U U
O:e cn LL
w O
o
w
Z p _
UJ �%
(n m