WHAT WE HEARD
On September 14, 2023, we hosted a Community Engagement Session at the Badlands Community Facility for the upcoming berm construction project slated for the community of Nacmine. This open-house style session was open to the public and offered residents an opportunity to express their thoughts and concerns. Below, we have summarized the key points raised during the event.
Preservation of Trees and Vegetation
What we heard:
A predominant concern voiced at the open house centred around the removal of existing trees and vegetation. Concerns were raised about the existing bird habitat, and attendees emphasized the significance of existing trees adjacent to the construction site, underscoring their role in providing shelter for residents from the elements. Residents expressed their apprehension regarding the perceived inadequacy of the new trees offering comparable benefits within a reasonable timeframe.
Questions were raised about the rationale behind selecting Manitoba Maples and whether alternative tree options could be explored, indicating a strong community preference for maintaining the existing tree landscape.
How we're responding:
We understand the importance of preserving trees, especially the large, established trees along the berm alignment that provide shade and contribute to the overall aesthetic value of the Nacmine area. Our team is committed to preservation where possible, only removing trees required for construction or those in deteriorating condition posing imminent safety concerns. Where there exists any potential to enlist the support of project partners in tree preservation, through design adjustments,
To maintain the urban tree canopy, for every healthy tree removed during berm construction, we pledge to plant five new ones. Our selection of tree species aims to enhance biodiversity, with a focus on those that will thrive in the local area. Based on a recent tree survey within the Nacmine area, the Manitoba Maple was identified as the second most common tree species in the berm footprint. Given its native status to the area and proven ability to thrive in this location, the Manitoba Maple was selected as the primary species for the tree replacement strategy.
Before clearing any trees or shrubs, we conduct nest sweeps in compliance with the Alberta Wildlife Act and the federal Migratory Birds Convention Act. This proactive approach ensures the protection of wildlife habitats before construction activities commence.
Views on Berm Development and Landscaping
What we heard:
Some residents have expressed confusion with the variance in berm development and have questioned the varying approaches used in other communities, like the use of sod in Willow Estates. Residents have expressed a desire for clarity a clear preference for the landscape aesthetic of Willow Estates over Newcastle, prompting many inquiries about the planned appearance of the berm. There were concerns about unfair treatment of residents because different landscapes have different levels of care.
How we're responding:
The Flood Office acknowledges the confusion arising from variations in the revegetation process across different community berms.
Upon the conclusion of construction, it is the duty of the construction contractor to reinstate and sustain the aesthetic and ecological vitality of these areas for a span of two years. Consequently, the methods employed for revegetation have varied across projects.
While some revegetation initiatives have advanced more rapidly than others, the Flood Office appreciates the continued patience of residents. We assure you that the construction contractors are diligently working to restore all community berm projects to a consistent, renewed and vibrant state. Over the contracted maintenance period, the Flood Office and design consultants will continue to monitor progress in the respective areas, holding the contractors to a shared standard of excellence between berms.
Following this two-year period, the Town will assume responsibility for ongoing maintenance.
Plans for the Midland Bridge
What we heard:
During the open house, residents sought clarification on contingency plans in case of a flood, questioning whether there would be backup plan, or whether the bridge would be raised or removed to mitigate flood risks. There was also keen interest in understanding how the bridge would seamlessly connect to the Nacmine trail system, reflecting residents’ anticipation of enhanced connectivity.
How we're responding:
To address these concerns, the Flood Office reached out Northwest Hydraulic Consultants Ltd. (NHC) For additional consultation.
In response, NHC evaluated the hydraulic effects of the Midland Rail Bridge by:
- Removing it from the numerical model developed for the provincial flood mapping study; and
- Comparing water levels with and without the bridge for a 100-year flood event (1850 m3/s).
In the numerical model, the planned Nacmine Berm begins at river station 47,010 and ends just upstream of river station 45,410. The Midland Rail Bridge is located at river station 44,430. Model results show that removal of the bridge with the berm in place yields a water level that is up to 0.22 m lower through the planned berm section.
Flooding begins in Nacmine when water levels at river station 47,010 and 45,748 reach 684.58 and 684.10 m, respectively. The 100-year water levels without the Midland Rail Bridge are approximately 1.4 m above these flood initiating water levels. Despite the removal of the Midland Rail Bridge reducing water levels by approximately 0.2 m, there continues to be a need to build the Nacmine Berm for flood protection.
To download the full report from Northwest Hydraulic Consultants Ltd., click here.
Timeline for Berm Construction
What we heard:
The timeline for berm construction was a common question among participants. They expressed curiosity about the expected beginning and schedule of the construction process. Residents were interested in understanding the project's timeline to seek clarity on when they could expect different stages to commence and conclude, and so they could anticipate any potential disruptions or inconveniences.
How we're responding:
We understand the importance of keeping residents informed about the timeline and milestones of the berm construction. At present, the contractor plans to begin Phase 2 of the project — Property Acquisition — in January 2024. Construction is set to begin in April 2025 and wrap by July 2026, barring any regulatory, material supply or other delays. We will provide regular updates on the progress of the project, including anticipated timelines for each phase. These updates will be shared through various communication channels, like newsletters, radio, newspaper, project websites and social media.
To download the updated program schedule, click here.
Berm Size
What we heard:
Some residents voiced apprehensions about the perceived overbuilt nature of the berm design and raised questions about whether the existing design is necessary.
How we're responding:
The height of the berm has been set based on the provincially determined 1:100-year flood event to keep the community safe from flooding for decades to come. The berms will be 4m wide and, on average, are 1.5m high. The elevation will differ throughout the valley because of the slope of the river and existing ground elevation under the berm footprint. They need to be wide enough to become haul routes and allow equipment to drive on top should the berm need to be elevated beyond this height during a flood event. The berms will be built to withstand a minimum flow of 1850 cubic metres per second (m3/s) plus 0.5m freeboard.
It’s anticipated this berm design will protect 98 homes in Nacmine.
Compensation
What we heard:
Participants raised questions related to compensation during the open house. Attendees sought information about the possibility of a full buyout option if they were dissatisfied with the berm construction. There were also expressions of discontent with the inadequacy of compensation provided to residents for the project. These questions highlighted the need for clarity on compensation options and emphasized the importance of fair and equitable arrangements.
How we're responding:
Land acquisitions operate as private transactions, governed by a Council-approved policy that mandates assessments of current market values conducted by certified appraisers. The ongoing review of this process ensures its continued effectiveness. While owners have the liberty to disclose this information at their discretion, our commitment to maintaining privacy and adhering to established policies remains unwavering.
To download a copy of the land acquisition policy document, click here.
Landscape Maintenance
What we heard:
Several participants raised pertinent questions regarding the maintenance of the berm landscape. Concerns were expressed about the responsible party for the upkeep of the berm’s greenery, with specific inquiries about the selection of seeds, the establishment process for plants, and strategies for weed control. Residents sought clarity on whether there would be gateway plantings at the community entrance off South Dinosaur Trail.
Community members also referenced previous instances of insufficient snow removal and lack of mowing by the town, raising skepticism about the expectations for consistent landscape maintenance.
How we're responding:
We recognize the significance of vegetation preservation and will work closely with environmental experts to ensure that the new trees, shrubs, and naturalized grass will flourish in this specific landscape.
Upon conclusion of berm construction, it is the duty of the construction contractor to reinstate and sustain the aesthetic and ecological vitality of these areas for a span of two years. Following this two-year period, the Town will assume responsibility for ongoing maintenance.
This maintenance will be conducted on an as needed basis, including pruning and trimming greenery, and removing or replacing trees and shrubs. The naturalized grass will be mowed by the Town one to two times a year.
Other Flood Mitigation Ideas
What we heard:
During the open house, the community actively contributed ideas and suggestions related to flood mitigation. Notable proposals included inquiries about the feasibility of utilizing the Dickson Dam for flood protection and exploring the option of dredging the river as a mitigation measure. Residents highlighted specific concerns about the river's flow dynamics, citing a low current on the south side [1+300] - [1+250] during flood events and noting river scouring on the north side during such occurrences.
How we're responding:
The Dickson Dam plays a crucial role in flood mitigation, effectively retaining 410 m3/s during a 1:100 year flood event. Without the dam's intervention, the flow during such an event would skyrocket to 2260 m3/s, necessitating berms with an elevation nearly 1 meter higher than the current design.
While exploring flood control options for other areas of the river, river dredging was considered but deemed impractical for several reasons. The benefits of dredging would be short-lived due to recurring sediment deposition. Moreover, this method poses significant environmental threats, with destructive impacts on aquatic habitats. Given these concerns and the unlikelihood of obtaining necessary regulatory permits from the provincial government, river dredging was ruled out as a viable solution.
Trail System
What we heard:
Questions were raised regarding the connectivity of the trail system to the Midland Bridge, emphasizing the importance of seamless integration for enhanced accessibility. Furthermore, concerns were expressed about the road on the east end of Nacmine, with residents noting that the plans suggested no connector to the trail system into Nacmine.
How we're responding:
modified to incorporate up-and-over ramps on both sides of Hunter Drive. This adjustment ensures the preservation of existing access to the Newcastle Trail.
Community Engagement and Communication
What we heard:
The community feedback from the open house highlighted a positive appreciation for the event and the opportunity it provided to address inquiries. Numerous attendees expressed gratitude for the well-organized and conducted session, emphasizing the effectiveness of the layout and its functionality for participants.
How we're responding:
We value ongoing community engagement and open communication. In response to the expressed desire for continued interest and participation, we will continue our regular communication channels to keep residents updated on project progress, milestones, and potential impacts. We will continue to utilize various communication methods, including newsletters, project websites and dedicated points of contact — including the CAC — to ensure that residents are well-informed and have opportunities to ask questions or raise concerns.
We are grateful for the input received from the Nacmine community during the Open House. We remain committed to addressing concerns, fostering transparency and delivering a successful Nacmine berm project that benefits both the community and the natural environment.