SILVER LAKE AND LAUREL CREEK REHABILITATION IN WATERLOO PARK    – ENVIRONMENTAL ASSESSMENT ADDENDUM PROJECT PUBLIC INFORMATION CENTRE #2 – DECEMBER 12, 2017 

PR1205171246KWO 

Current Conditions Associated with Silver Lake and Laurel Creek Site reconnaissance completed in May 2017 indicates that many of the same conditions exist from the 2013 assessment, now with the addition of the culvert/bridge structure and LRT tracks. Sediment has continued to accumulate within Silver Lake which has extended to the newly installed triple box culvert for the rail crossings. Some of the areas of concerns identified in the field are shown below.

       

     

                       

 

1. Eroded Outfall

3. Gabion Basket Walls

4. Pedestrian Bridge

2/2a. Debris Accumulation

9. Debris in Trash Racks 5. Weir Remnants

8. Soil Erosion

10. Surface Erosion and Rills

11. Silver Lake Outlet

7. LRT Crossing 6. Sedimentation

SILVER LAKE AND LAUREL CREEK REHABILITATION IN WATERLOO PARK   SILVER LAKE AND LAUREL CREEK REHABILITATION IN WATERLOO PARK – ENVIRONMENTAL ASSESSMENT ADDENDUM PROJECT  – ENVIRONMENTAL ASSESSMENT ADDENDUM PROJECT PUBLIC INFORMATION CENTRE #2 – DECEMBER 12, 2017  PUBLIC INFORMATION CENTRE #2 – DECEMBER 12, 2017 

PR1205171246KWO 

Current Conditions Associated with Silver Lake and Laurel Creek As part of the 2017 Environmental Assessment Addendum, additional background information was collected and reviewed including a site reconnaissance in May 2017 to confirm current conditions, and observe changes from previous reports. Some areas to note are described below.

1. Eroded Outfall Erosion behind the headwall at the University Ave. crossing.

2/2a.  Debris Accumulation Debris accumulation within Laurel Creek.

3. Historic Dam There is a deep scour pool immediately downstream.

4. Pedestrian Bridge New crossing is functioning appropriately.

5. Weir Remnants Remnants of the former dam remain damaged.

6. Sedimentation The box culvert appears to be accumulating sediment.

7. LRT Crossing There is sediment deposition in Silver Lake downstream of the LRT tracks.

8. Soil Erosion Soil erosion from surface runoff.

9. Debris in Trach Racks The debris reduces outlet capacity

10. Surface Erosion and Rills The erosion contributes to additional sediment in Silver Lake.

11. Silver Lake Outlet The structure is in poor condition (cracked and leaking) and in need of repair.

Next Steps Alternatives to be confirmed and evaluated

Preferred solutions identified

Project Team Meetings

PIC #3 (Spring 2018) for input regarding selected preferred solutions

For additional information, please contact:

Steve Brown, MBA, P.Eng. Project Manager Stantec 100-300 Hagey Boulevard Waterloo, ON N2L 0A4 Phone: (519) 585-7446 Email: steve.brown@stantec.com

Jessica Kellerman, P.Eng. Project Manager, Water Resources Engineering Services, Design & Construction City of Waterloo Waterloo City Centre 100 Regina St. S Waterloo, ON N2J 4A8 Phone: (519) 886-1550 x78243 Email: jessica.kellerman@waterloo.ca

 

Silver Lake and Laurel Creek Rehabilitation in Waterloo Park – Environmental Assessment Addendum Project Public Information Centre #2 – December 12, 2017

Information Brief Introduction The City of Waterloo is conducting a study to identify and evaluate alternatives to rehabilitate Silver Lake and Laurel Creek in Waterloo Park. Waterloo Park has been described as the ‘Jewel of the City’, and Silver Lake is a unique element that has provided recreational amenity and picturesque aesthetic for the Park since 1890, making it a central feature of the City of Waterloo. As the community around the Park has grown, so have the services to Waterloo Park and the impacts on its features. The study to rehabilitate Silver Lake and Laurel Creek will follow the requirements under the Municipal Class Environmental Assessment (EA) process.

Problem Statement Currently, surface water discharge creates poor water quality and sediment conditions in Silver Lake, and contributes to the instability of Laurel Creek. Stream restoration is required to improve water conveyance in the Park, while maintaining attention to the flooding limits, natural aesthetics of the Park, cultural landscape elements, and the short and long-term implementation concepts. The study will identify and evaluate alternatives for enhancing and protecting the ecological function and natural features within the Park, ensuring that Silver Lake and Laurel Creek continue to be key attractions in the City of Waterloo.

Public and agency consultation is a key component of the Class EA

process, and we value your input.