Download - BioLogic Incorporated Windsor Office - London, …...BioLogic Incorporated Windsor Office 110 Riverside Drive, Suite 201 2280 Ambassador Drive London, Ontario N6H 4S5 Windsor, Ontario

George Bikas, February 5, 2019Drewlo Holdings Inc.P.O. Box 6000,Komoka, Ontario, N0L 1R0

Dear George:

Re: Drewlo Holdings Inc. - Scoped Environmental Impact Study (EIS) for Block 151 and 152Rezoning Application - within Phase 13 Summerside Subdivision (39T-92020)

1.0 Introduction

This report is a Scoped Environmental Impact Study (EIS) for Block 151 and Block 152, in the south

west part of Phase 13 of the Summerside Subdivision (39T-92020) in the City of London. Block 151 and

152 are located north of Bradley Ave, just west of Chelton Ave and occupies 3.3ha of agricultural lands

[Figure 1].

This EIS provides supporting documentation for a proposed site plan application for Blocks 151 and 152.

As part of this application, the proposal is to re-zone Block 151 from (ASA) Commercial to Medium

Density Residential to match the zoning of Block 152 [Figure 2]. Holding provisions on Block 152 will

be lifted as part of this application.

MNRF issued an ESA clearance [Letter to Proponent (LOA)] under the Endangered Species Act (2007)

on June 29, 2018 for all of the Phase 13A of the Summerside Subdivision [Appendix A]. MNRF

recommendations pertinent to Blocks 151 and 152 are included in this EIS (Section 4).

UTRCA has confirmed there should not be a Regulatory Flood Line in the area of the Subject Lands but

that these blocks are regulated for wetland interference [Appendix B]. In addition, the UTRCA has

accepted the Hydrogeological & Water Balance Analysis and supplemental information (EXP, 2017) and

has deferred to the City of London on the acceptance of the EIS [Appendix B].

The EIS for the Summerside Subdivision Phase A (BioLogic, 2017) included recommendations for a 5m

BioLogic Incorporated www.biologic.ca Windsor Office110 Riverside Drive, Suite 201 2280 Ambassador Drive London, Ontario N6H 4S5 Windsor, Ontario N9G 4E4Telephone: 519-434-1516 Telephone: 519-966-1645Fax: 519-434-0575 Fax: 519-966-1645

http://www.biologic.ca

...page 2

setback to be applied to the south side of the east/west extension of the wetland (northeast corner of

Block 151) [Figure 3]. This buffer reflected a reduced buffer compared to the remainder of the core

wetland feature to reflect the modification to the wetland boundary since the prior draft plan approval.

This expanded wetland was considered to be largely an artefact of a blocked outlet culvert under

Highbury Ave.

The City requested an increase to this 5m setback in their review comments of the Phase 13A EIS. This

has been considered in the context of the recent, and possibly ephemeral expansion of wetland, the City

proposed trail system location and the constraints of previously approved Chelton Ave alignment in the

same general location.

2.0 Site Plan

Blocks 151 and 152 of the Draft Plan (39T-92020) for Phase 13 of the Summerside Subdivision were

originally proposed and approved (2006) as a Commercial Block and Multi-family Block respectively.

The Site Plan now proposes both Blocks 151 and 152 as Multi-Family Residential Blocks [Figure 4].

The Site Plan includes two 3-storey townhouse units, two 3-storey apartment buildings, four 6-storey

apartment buildings, and associated above ground parking and access roads [Figure 4]. The City of

London requested a pedestrian walkway which extends along the north portion of Blocks 151 and 152 in

an east/west direction. The east/west walkway connects to the north/south walkway that is proposed for

the buffer setback west of Chelton Rd [Figure 4].

Both minor and major stormwater flows from Blocks 151 and 152 are proposed to be directed to the

Summerside Subdivision’s Municipal storm sewer system and stormwater management facility (exp,

2017; Development Engineering 2017). The development of Blocks 151 and 152, as per the site plan,

does not impact the proposed linear bioswales along the west side of Chelton Rd and south side of Evans

Blvd that are intended to provide water to the third pipe system to maintain water balance to the wetland

[Development Engineering, 2017). The proposed zone change from Commercial to Medium Density

Multi-Family Residential for Block 151 does not impact water balance to the wetland.



...page 3

3.0 Adjacent Features

The proposed footprint of the site plan has no buildings or structures within the significant natural

heritage features or the respective buffer setback (established by Stantec (2004) and modified in 2017) to

the wetland [Figure 5]. The established buffer setback, which will be planted with native vegetation,

protects the ESA, PSW, Butternut, and candidate Significant Wildlife Habitat (waterfowl nesting habitat,

amphibian breeding habitat and potential turtle habitat) identified in the broader EIS (BioLogic, 2017),

from direct impacts of the proposed development within Blocks 151 and 152 [Figure 5]. In the north west

side of the proopsal, the development is next to the vegetation edge [Figure 5] which consists of cultural

meadow in that location. This existing meadow provides substantial buffer setback to the wetland (60m).

4.0 Mitigation

General mitigation measures have been recommended for this Phase 13A development through a prior

EIS (2017). These should be read in conduction with the site specific recommendations for this Block

Plan as noted below.

The development footprint for this updated block plan, is outside the significant natural heritage features

of the site. The condominium buildings and associated roads and parking are located outside the

recommended wetland setback. In the review of the Phase 13A EIS, the City of London requested an

additional 5m setback at the east/west wetland extension to create a minimum 10m setback there

[Appendix C]. Block H (a 3 storey apartment) has been located 10m from the east/west wetland

extension [Figure 5].

Recommendation 1: Provide additional landscaping in the rear yard (north side) of Block H

to reinforce this 10m setback/buffer. The plan should be comprised of

plant species (grasses and shrubs) that are native to Ontario to create a

naturalized setting within the 10m setback to the wetland extension.

The location of the City of London requested pedestrian walkway is to the north of the proposed parking

and Apartment Blocks G and H. The walkway skirts marginally into the buffer setback [Figure 5].



...page 4

Recommendation 2: The buffer areas should be naturalized using plant species native to

Ontario.

MNRF has requested that a chain link fence be installed on properties which border the ESA to prevent

encroachment to the buffer or beyond.

Recommendation 3: A chainlink fence should be installed at the north limit of the walkway

Right-Of-Way.

There are general construction related impacts that require mitigation.

Recommendation 4: Prior to construction, heavy duty sediment control fencing should be

installed along the northerly development limit [Figure 5]. This fence

will:

i. act as a barrier to keep construction equipment and spoil

out of wetland buffer and/or woodland edge

ii. prevent sedimentation from reaching the wetland.

Recommendation 5: Sediment control fencing should be inspected prior construction to

ensure it was installed correctly and during construction to ensure that

the fencing is being maintained in working order at all times. Any issues

that are identified are resolved in the same day.

Recommendation 6: All erosion and sediment control measures will be inspected daily and

after significant rainfall events, maintained and/or adjusted accordingly

to ensure sediment does not enter the natural feature at any time.

Recommendation 7: Sediment control fencing will be installed according to the Guidelines

for Erosion and Sediment Control for Urban Construction Sites (OMNR,

1987) and the applicable standards established in the Ontario Provincial

Standard Specification/Ontario Provincial Standard Drawings



...page 5

(OPSS/OPSD) documents.

Recommendation 8: Sediment control fencing should not be removed until adequate re-

vegetation and site stabilization has occurred to ensure no deleterious

substances enter the natural feature at any time.

Recommendation 9: Establish a storage/refueling area for heavy machinery at least 30m away

from the wetland buffer.

Recommendation 10: Roof runoff to bare ground can generate considerable sediment

movement beyond the construction limits. Until rear yards have been

vegetated and stable for buildings backing onto the woodland, roof

leaders should be directed to the streets or nearby stabilized vegetated

areas.

Recommendation 11: All stormwater should be temporarily directed away from the natural

heritage feature through a system of swales, preferably adjacent to the

road pattern.

Recommendation 12: All disturbed areas should be re-seeded as soon as possible to maximize

erosion protection and to minimize volunteer populations of invasive

species which may spread to the ESA.

Recommendation 13: The buffer area should be planted with native vegetation to introduce a

buffer early in the process [Figure 5].

5.0 Conclusion

There are no significant natural heritage features and functions within Blocks 151 and 152. The buffer to

the wetland established and approved for the plan with modifications for the expanded wetland in Phase

13A, provides sufficient setback for the proposed Site Plan for Blocks 151 and 152 which reflects a prior

approved draft plan. All direct impacts to significant features and functions adjacent to Blocks 151 and

152 are avoided. A more detailed Renaturalization Plan is needed as part of the detailed Site Plan design.



...page 6

BioLogic has evaluated the natural heritage features and functions associated with the Site Plan for

Blocks 151 and 152. Provided all avoidance and mitigation measures outlined in this report are followed,

there will be no net effects to the natural heritage features and functions. It is our opinion, from the

perspective of natural heritage, that the zoning change from Commercial to Medium Density Residential

for Block 151 can proceed.

Yours truly,

BioLogic

Dave Hayman MSc.Drewlo ScopedEISSummersidePhase13A_AddendumFinal_siteplanupdateFeb2019.wpd

[lm]

Figures:Figure 1: Subject Lands Figure 2: City of London Zoning MapFigure 3: Recommendations from EIS (BioLogic, 2017)Figure 4: Proposed Development - Site Plan Figure 5: Proposed Development OverlayFigure 6: Proposed Development Overlay - Zoom In

Appendices:Appendix A - MNRF Endangered Species Act Letter to Proponent Appendix B - UTRCA correspondenceAppendix C - City of London correspondence



...page 7

6.0 References

BioLogic. 2017. Drewlo Holdings Inc. - Scoped Environmental Impact Study (EIS) for Phase 13Summerside Subdivision (39T-92020). 167pp.

Development Engineering. January 2017. Summerside Subdivision - Phase 13 Third Pipe System -London Ontario Stormwater Management Review. 46pp.

EXP. August 2017. Hydrogeological and Water Balance Assessment - Proposed ResidentialDevelopment Summerside Phase 13. 180pp.



Figure 1: Site Location - Blocks 151/152 (2017 City of London Air Photo)

Scale 1:5,000August 2018

0

Print on 11X17, Landscape Orientation

100

Scale 1:50,000Key Plan

1,0000

SiteLocation

Bradley Ave.

401H

ighbury Ave

Bradley Ave

Highbury A

ve.

Commissioners Rd.

Jackson Rd.

Draft Plan Lot Fabric

Phase 13A - Summerside Subdivision

Phase 13B

Block 152

Block 151

SubjectLands

Figure 2: City of London Zoning Map (2016 City of London Air Photo)

Scale 1:4,000August 2018

0


80

Scale 1:50,000Key Plan

1,000

0

SiteLocation

Bradley Ave.

401H

ighbury Ave

Brad

ley Av

e

Highbury A

ve.

Commissioners Rd.

Jackson Rd.

Draft Plan Lot Fabric

Phase 13A - Summerside Subdivision

Phase 13B

Block 152

Block 151Subject Lands

Figure 3: Recommendations from EIS (BioLogic, 2017)(2017 City of London Air Photo)

Scale 1:1500August 2018

SiteLocation

9 xScale 1:50,000Key Plan

1,0000

PSW Boundary (BioLogic 2016) - Accepted by MNRF

x Retainable Butternut with 50m Setback

0


30

2016 Surveyed Edge of Vegetation

Added 5m Setback from woodland/wetland

9 xAdded 5m Setback

2016 Vegetation Edge

3.0 m

Wetland Buffer as per Stantec (2004)

Wetland Buffer as per Stantec (2004)

Bradley A

ve.

Block 152

Block 151

Wetland Buffer (Stantec, 2004)

Chelto

n R

d

Meadow

lmclennanText Box Figure 4 - Site Plan

lmclennanCalloutESA Buffer

Figure 5: Development Proposal Overlay(2017 City of London Air Photo)

Scale 1:1500February 2019

SiteLocation


1,0000



0


30

2016 Surveyed Vegetation Edge

9 x

Bradley A

ve.

Block 152

Block 151

Proposed Pedestrian Pathway

60m

10m

ESA Buffer - modified for expanded wetland

Figure 6: Zoom in - Development Proposal Overlay(2017 City of London Air Photo)

Scale 1:500February 2019

SiteLocation


1,0000



0


10

2016 Surveyed Vegetation Edge

Block 152

Block 151

Proposed Pedestrian Pathway

60m

10m

ESA Buffer

Area of rear yard landscaping

Appendix AMNRF Endangered Species Act Letter to Proponent

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Ministry of Natural

Resources and Forestry 615 John Street North Aylmer ON N5H 2S8 Tel: 519-773-9241 Fax: 519-773-9014

Ministère des Richesses

naturelles et des Forêts 615, rue John Nord Aylmer ON N5H 2S8 Tél: 519-773-9241 Téléc: 519-773-9014

June 29th, 2018

AYL-L-089-18 George Bikas Drewlo Holdings P.O. Box 6000 RR #3 Komoka, ON N0l 1R0 Dear Mr. Bikas: RE: Phase 13A – Summerside Subdivision and the Endangered Species Act, 2007 (ESA 2007) The Ministry of Natural Resources and Forestry (MNRF) has reviewed the information that was provided on Phase 13A for the Drewlo Summerside subdivision to assess the potential impacts of the proposal on endangered or threatened species and their habitats. From the information provided, it is our understanding that the proposed project falls within these parameters:

a) The project is located east of Highbury Avenue, north of Bradley Avenue in the City of London.

b) Phase 13A of the residential development involves (as outlined in the information provided to MNRF and in the attached figure [DrewloSummerside_Phase13A]):

Site servicing, road installation and development of residential and commercial blocks within the Phase 13A development footprint identified in the attached figure.

The woodland/wetland feature is not to be impacted by the development (e.g. no vegetation clearing, grading, machinery use in the feature).

Recommendations in the Environmental Impact Study (EIS), completed by Biologic (dated September 22nd, 2017) will be followed, including:

Wildlife fencing will be installed, prior to construction and in accordance with the Figure 8 of the EIS.

Permanent roadside barriers will be installed along the south and west sides of Evans Boulevard and Chelton Road.

Sediment and erosion control fencing will be installed, prior to construction and in accordance with Figures 7 and 8 of the EIS, to prevent sedimentation and equipment from entering the wetland/woodland feature. Sediment control fencing will not be removed until adequate re-vegetation and site stabilization has occurred.

Permanent fencing (e.g. chain link fencing) will be installed along the rear lot lines of all properties which border the woodland/wetland feature, including residential lots 129-148, lots 177-196, Block 151, multi-family block 152, Block 201 and Block 202, to prevent encroachment into the naturalized buffer.

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Any necessary vegetation removal will not occur during the breeding bird season (April to August) to avoid impacts to nests.

A homeowners’ education package will be produced and distributed to provide best management practices (e.g. disposal of landscape waste, planting on non-native/invasive species) and information on the adjacent natural heritage feature.

A bat rocket box is proposed to be installed.

A trail within the buffer zone between the woodland/wetland feature and the rear lot line of lots 129 to 148 is proposed. Fencing and bollards will be used discourage use of the trail system by recreational vehicles.

Project-specific information regarding Phase 13B will be submitted to MNRF for review following the completion of life science inventories.

c) The proposed Phase 13A development will begin following receipt of all necessary approvals.

d) MNRF has reviewed species at risk (SAR) occurrence information on file and determined that there are known occurrences of the following species in the general area of the project location:

Butternut (endangered) – receives species and general habitat protection. Butternut is known to occur in the woodland on the property.

SAR bat species (endangered) – receive species and general habitat protection.

Barn Swallow (threatened) – receives species and general habitat protection.

Bank Swallow (threatened) – receives species and general habitat protection.

Blanding’s Turtle (threatened) – receives species and general habitat protection.

Snapping Turtle (special concern)

Wood Thrush (special concern) Based on a review of the above information, MNRF has determined that the activities associated with the project, as currently proposed, will likely not contravene section 9 (species protection) and/or section 10 (habitat protection) of the Endangered Species Act, 2007 (ESA 2007) for the species at risk listed above provided the following recommendations are implemented: General

1. MNRF recommends that wildlife crossing signs be installed at the locations on Chelton Road and Evans Boulevard that are within five metres of natural heritage feature (Provincially Significant Wetland, woodland).

2. Erosion and sediment control measures must be installed prior to any disturbance on site and maintained in working order at all times until all disturbed areas have been appropriately stabilized to ensure that no deleterious substance enter the natural feature at any time. If the geotextile fencing is intended to exclude reptiles from the active construction area, it must be installed appropriately prior to site preparation and construction.

3. All erosion and sediment control measures will be inspected daily and after significant rainfall events, maintained and/or adjusted accordingly to ensure sediment does not enter the natural feature at any time.

4. Wildlife fencing will be inspected regularly and maintained and/or adjusted accordingly if necessary to ensure the fencing is functioning properly as a wildlife barrier.

5. The buffer areas should be naturalized using plant species native to Ontario.

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6. All on-site personnel must be made aware of the potential presence of SAR on site, particularly SAR reptiles and Butternut, their habitat in the area and the protection afforded under the ESA 2007 prior to conducting any work on the site.

7. Any species listed as endangered or threatened on the Species at Risk in Ontario (SARO) List that is encountered at the project location must be protected from all harm and harassment.

8. Any SAR individual (presumed to be unharmed) that is incidentally encountered in the project location must be allowed to leave on its own accord. Activities within 30 metres must cease until the individual disperses. Construction machinery/equipment must maintain a minimum operating distance of 30 metres from the individual until it disperses from the project area on its own accord.

9. If an injured or deceased SAR is found or a SAR individual is accidentally unearthed from overwintering, the specimen must be placed in a non-airtight container that is maintained at an appropriate temperature and a Wildlife Custodian (authorized under the Fish and Wildlife Conservation Act) should be contacted. A list of authorized Wildlife Custodians, their locations and their specialties (e.g. reptiles) is available at https://www.ontario.ca/page/find-wildlife-rehabilitator. MNRF (contact information below) must be contacted immediately after the occurrence.

10. Any SAR individual that is present at the project site should be reported to the MNRF Aylmer District staff (contact information below) within 48 hours of the observation or the next working day, whichever comes first.

11. No machinery or heavy equipment will be used within the woodland/wetland feature.

12. Any equipment used for the purpose of carrying out the work will be operated in a way that prevents deleterious substances from entering adjacent natural areas.

13. All disturbed areas will be appropriately and effectively stabilized and/or restored immediately following completion of the works.

SAR Bird Species

14. Construction personnel should be made particularly aware of the possibility of encountering ground-nesting birds as well as non-ground nesting birds if work is being conducted in potential habitat during the breeding bird season, April 1st to August 31st.

15. Equipment should not be moved through patches of open, grassy habitat during the breeding bird season, as nests are rarely found and may be trampled. Edges such as fencerows, hedgerows and laneways should be followed if equipment must be moved through potential ground nesting bird habitat areas.

16. If any nests are encountered in the work site, the area within 30 metres should be avoided.

17. Stockpiles that have been created on site as a result of previous grading on the Summerside residential development site should checked for Bank Swallow nests, prior to any development disturbance. If Bank Swallow nests are present, MNRF must be contacted for further direction. All stockpiles created during construction should be maintained at an appropriate grade to avoid the possibility of Bank Swallow colony establishment. The MNRF-published best management practices for Bank Swallow should be followed for nest prevention.

https://www.ontario.ca/page/find-wildlife-rehabilitatorhttps://www.ontario.ca/page/find-wildlife-rehabilitatorhttps://www.ossga.com/multimedia/2017-03-27-100504-95129/bansbmpenpdffinalv.1.117mar17.pdfhttps://www.ossga.com/multimedia/2017-03-27-100504-95129/bansbmpenpdffinalv.1.117mar17.pdf

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If the above recommendations are implemented, the activity will likely not contravene section 9 (species protection) and/or section 10 (habitat protection) of the ESA 2007. This Letter to Proponent (AYL-L-089-18) is valid until December 31st, 2019. Should any of the project parameters change, please notify the MNRF Aylmer District office immediately to obtain guidance on whether additional actions will need to be taken to remain in compliance with the ESA 2007. Also, if any SAR species and/or habitats are observed in the project area, please contact the MNRF Aylmer District office as soon as possible. Please visit https://www.ontario.ca/page/species-risk for more information on SAR species and habitat. It is important to note that changes may occur in both species and habitat protection which could affect whether proposed projects may have adverse effects on SAR. The ESA 2007 applies to endangered and threatened species listed on the Species at Risk in Ontario (SARO) List (http://www.ontario.ca/environment-and-energy/species-risk-ontario-list). The Committee on the Status of Species at Risk in Ontario (COSSARO) meets regularly to evaluate new species for listing and/or re-evaluate species already on the SARO List. As a result, species designations may change, which could in turn change the level of protection they receive under the ESA 2007. Also, habitat protection provisions for a species may change if a species-specific habitat regulation comes into effect. Please be advised that it is your responsibility to comply with all other relevant provincial or federal legislation, municipal by-laws or required approvals from other agencies. If you have any concerns or questions regarding this letter, please contact me at 519-773-4711 or by email at [email protected]. Sincerely,

Kathryn Markham Management Biologist, Aylmer District Ministry of Natural Resources and Forestry

https://www.ontario.ca/page/species-riskhttp://www.ontario.ca/environment-and-energy/species-risk-ontario-listmailto:[email protected]

Appendix BUTRCA correspondence

1

Laura McLennan

From: Dave HaymanSent: Wednesday, April 11, 2018 9:03 AMTo: Laura McLennanSubject: FW: 800-810 Chelton Road (Block 152) - London

For the file

Dave Hayman, MSc. BioLogic Incorporated 110 Riverside Drive London, ON N6H 4S5 Direct: 519 657 0299 Office: 519 434 1516 x 106 Fax: 519 434 0575 Windsor: 519 966 1645

From: Mark Snowsell [mailto:[email protected]] Sent: April‐11‐18 8:31 AM To: George Bikas Cc: Christine Creighton ; Dave Hayman ; Jeff Thomas ; Melissa Campbell ; Stefanie Pratt ; [email protected] Subject: 800‐810 Chelton Road (Block 152) ‐ London

Good morning George and thank you for the good discussions on April 9/18 regarding the above-noted lands.

With the preparation of Regulation Limit mapping in 2006, a flood line formed one of the "constraint layers" placed on the subject property by the UTRCA at the time. Questions have been raised regarding the accuracy and applicability of this line.

We have reviewed the information internally, with our water resources engineering staff confirming that there should not be a "Regulatory Flood Line" in this area. There is reason to believe that any elevated water levels in this area can be attributed primarily to the nature of the culvert crossing of Highbury Avenue adjacent to this property and significant sediment accumulation within the culvert. Standing water has been observed in the area but not as a result of the size of the catchment area/contributing runoff.

2

In attempting to assist all parties moving forward with development applications for the subject lands, we wish to advise the following:

a) that flood lines will be removed from our mapping for the area in question

b) the UTRCA will continue to work with all parties to review submissions addressing matters related to wetland buffers/setbacks and grading plans intended to ensure that 800-810 Chelton Road is appropriately elevated - all part of our input into the planning/Section 28 approval process

Please contact me if you have any questions. Thank you.

Mark Snowsell Land Use Regulations Officer 1424 Clarke Road, London, Ontario N5V 5B9 ph. 519-451-2800 ext 245 e-mail [email protected]

“Inspiring a Healthy Environment”

1424 Clarke Road, London, Ont. N5V 5B9 · Phone: 519.451.2800 · Fax: 519.451.1188 · Email: [email protected] www.thamesriver.on.ca

December 12, 2017

City of London - Development Services

P.O. Box 5035

London, Ontario N6A 4L9

Attention: Blair Hammond & Larry Mottram (sent via e-mail)

Dear Messrs. Hammond & Mottram:

Re: File No. 39T-92020 & 39T-92020-E – Summerside Subdivision Phase 13

UTRCA Comments on Hydrogeological Assessment & Water Balance

Applicant: Drewlo Holdings Ltd.

Further to our comments dated October 17, 2017 regarding the Hydrogeological and Water Balance

Assessment Proposed Residential Development, Summerside Phase 13 prepared by exp (dated August 2016,

Revised February 2017 and Updated August 2017), we wish to advise that the Upper Thames River

Conservation Authority (UTRCA) met with the applicant and their consultant on October 13, 2017 to discuss

the Authority’s outstanding concerns. The consultant - exp provided the following responses in email

correspondence dated November 1, 2017 –

Hello Imtiaz/Christine/Mark,

Thanks again for meeting with us yesterday regarding the Summerside Phase 13 site. As discussed, below

are some responses to the comments regarding the water balance provided in your letter dated October

17, 2017.

1. Attached to the email is Drawing H1 showing the Areas used for the Water Balance. This drawing

was also provided in the August 2017 revised Hydrogeological report.

2. Also attached is a revised Table 1 detailing the differences between Pre and Post development

conditions. Note that the values for Area 2 in post-development are slightly different than what

was listed in the October 3 memo - resulting from the formulas in the previous version of our

Excel spreadsheet not being automatically updated.

3. The difference in infiltration between pre and post development do not include incorporation of

the Third pipe. Inclusion of the water from the Third pipe system will act to maintain water

volumes in the wetland.

mailto:[email protected]

UTRCA Sign-Off Hydrogeological Assessment &

Water Balance Analysis

File No.39T-92020 & 39T-92020-E

2

4. As discussed at the meeting, the wetland will have water inputs from the Third pipe system under

post-development but will include mitigation for flow. Final design of the discharge has not been

completed, and are open to discussions with UTRCA for appropriate vegetation and

flow/discharge criteria.

5. As agreed, details on the LIDs and Third Pipe system will be incorporated within the SWM

Report.

As discussed, we will continue monitoring groundwater levels in monitoring wells MW16-1, MW16-3 and

MW16-4, provided they wells are still suitable for use, for the few years. Groundwater quality will also

be evaluated on a 9-month basis, with the initial sampling completed within the next month. An annual

report will be completed summarizing the results.

If you have any questions, please do not hesitate to call.

Thanks

Michael Venhuis, M.Sc., P.Geo.

Senior Environmental Geoscientist, Earth & Environment

On December 1, 2017, the UTRCA advised that we were generally satisfied with the provided water balance

information but requested some additional details regarding water quality with respect to the third pipe system

and the swale. Subsequently on December 3, 2017, exp provided the following response -

Hi Christine –

As discussed at the meeting, only runoff from the residential backyards, landscaped areas and parks will

be allowed to drain to the wetland via the third pipe system. Runoff from roads and paved areas will be

diverted away from the wetland, towards Jackson Road. As such, potential for elevated levels of

contaminants in the runoff is limited due to the isolation of the runoff from rear yards. Appropriate

discharge measures will be in place for drainage into the wetland, including velocity and sedimentation

mitigation measures and vegetation. As discussed, input from UTRCA on final designs is welcomed.

Note, we also provided additional comments to this concern in our August 8, 2017 correspondence (Item

2) relating to UTRCA comments on the Hydrogeological Report 9attached).

As agreed in our meeting, we will continue to monitor groundwater in selected wells (quality and levels)

as well as the wetland.

If you have any further questions, please let us know.

Thanks

Michael Venhuis, M.Sc., P.Geo.

Senior Environmental Geoscientist, Earth & Environment

m: 226-989-5726

tel:2269895726

UTRCA Sign-Off Hydrogeological Assessment &

Water Balance Analysis

File No.39T-92020 & 39T-92020-E

3

Accordingly, the UTRCA is satisfied with the provided information and accepts the Hydrogeological & Water

Balance Analysis and supplementary information. We request that the email correspondence/clarification be

added as an appendix to the final version of the Hydrogeological report so that the responses are appropriately

documented.

EIS

With respect to the Drewlo Holdings Inc. – Scoped Environmental Impact Study (EIS) for Phase 13

Summerside Subdivision (39T-92020) prepared by Biologic dated September 22, 2017, it is our

understanding that the City of London has provided comments and conditions on this report. The UTRCA’s

ecologist has discussed the matter with the City’s ecologist and we are prepared to defer to the City on the

finalization/acceptance of the EIS.

Thank you for the opportunity to review and comment. Please contact the undersigned at extension 293 if

there are any questions.

Yours truly,

UPPER THAMES RIVER CONSERVATION AUTHORITY

Christine Creighton

Land Use Planner

IS/TT/CC/cc

c.c. Sent via e-mail -

Applicant – Drewlo Holdings – George Bikas

City of London – James MacKay, Ecologist

UTRCA – Mark Snowsell, Land Use Regulations Officer

Appendix CCity of London Correspondence

1

Laura McLennan

From: Laura McLennanSent: Monday, August 27, 2018 12:08 PMTo: Laura McLennanSubject: FW: 39T-92020E - Summerside Phase 13A - Environmental Impact Study

From: Hitchon, Trevor [mailto:[email protected]] Sent: October 13, 2017 4:15 PM To: Derek Hoevenaars Cc: George Bikas ; Jeff Thomas ; Hammond, Blair ; Wilson, Stephanie ; Mottram, Larry Subject: 39T‐92020E ‐ Summerside Phase 13A ‐ Environmental Impact Study Derek, Development Services has received comments from Parks Planning regarding the finalized Environmental Impact Study. Please ensure the following recommendations are included on the drawings on the next (digital) submission:

1. Recommendation #1 – Wildlife fencing should be added to the drawings in accordance with EIS recommendations.

2. Recommendation #3 – Provide road side barriers on the south and west sides of Evans Blvd and Chelton Rd respectively where the right of way is adjacent to the wetland. Barrier curb can satisfy the requirement of a roadside barrier, unless you have other recommendations that may satisfy this need.

3. Landscape Naturalization Plan: a. Please incorporate hibernacula within the buffer. b. The tree plantings should have a minimum center offset of 7-10 meters. Revise the

planting locations to reflect this and include a note on the plan. c. Seeded areas are to be overseeded with Common Milkweed. Please include notes to

this effect. 4. The 5m additional setback proposed along the south should be increased to 10m. This buffer

should be expanded to accommodate the additional wetland habitat identified and accepted by the MNRF. The ZBA process to convert the commercial block to residential can address this (revisions not required to the engineering drawings for this).

Future phases will be subject to further review and comment, however please note that there appears to be inaccuracies in the portion of the proposed wetland boundary ‘to be approved by the MNRF’ and there may be issues with the development setback in Phase 13B as currently shown. Should you have any questions related to the above, please feel free to contact Development Services or Stephanie Wilson. Please note that I am out of the office next week, and you can contact Blair Hammond in my absence. Regards,

2

Trevor Hitchon, C.Tech. Technologist II Development Services City of London

300 Dufferin Avenue London, ON N6A 4L9 P: 519.661.CITY(2489) x 2785 | Fax: 519.930.3500 [email protected] | www.london.ca

DrewloSummersideblock151-152EIS Figs 1-5.pdfFig 1 - Site LocationFig 2 - zoningFig 3 - EIS recommendationsFig 4 - Bradley Block 151-152 SitePlan Model_highlight ESA bufferFig 5 - 151 and 152 overlayFig 6 - zoom 151 and 152 overlay

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