Erosion and sediment control might not sound glamorous, but it’s a critical part of protecting our environment, ensuring legal compliance, and keeping construction projects running smoothly. Whether you're a contractor, developer, or environmental enthusiast, understanding the basics of erosion and sediment control is key to safeguarding our waters and maintaining project efficiency.
Why Do We Care About Erosion and Sediment Control?
Did you know that sediment is one of the most common pollutants in water? Canada’s Fisheries Act prohibits the release of harmful substances into fish-bearing waters, emphasizing the importance of erosion and sediment control. Sediment and suspended solids can wreak havoc on aquatic ecosystems, making it essential to take proactive measures to prevent erosion at its source.
Environment and Climate Change Canada administers section 36, the key pollution prevention provision, prohibiting the deposit of deleterious substances into waters frequented by fish, unless authorized by regulations under the Fisheries Act or other federal
legislation.
ESC and BMPS (Understanding the Acronyms)
ESCs (Erosion and Sediment Controls)
Erosion control is the process whereby the potential for erosion is minimized; and.
Sediment control is the process whereby the potential for eroded soil being transported and/or deposited beyond the limits of the construction site is minimized.
BMPs (Best Management Practices)
(BMPs) are methods that have been determined to be the most effective and practical means of preventing or reducing non-point source pollution to help achieve water quality goals. BMPS include both measures to prevent pollution and measures to mitigate pollution
The Foundation of Erosion and Sediment Control
Pre-Project Planning.
Good erosion and sediment control (ESC) practices start with thoughtful planning:
Understand the construction schedule and aim to complete earthworks during drier months when possible.
Develop practical strategies that align with contractor budgets and timelines.
Regularly inspect and maintain your ESC measures throughout the project.
Erosion Control: Stopping the Problem Before It Starts
Erosion control focuses on keeping soil in place, preventing it from becoming a pollutant. Best Management Practices (BMPs) include:
Reducing slope steepness or length.
Compacting or tracking exposed soil.
Covering soil with erosion control blankets, vegetation, or bonded fiber matrices.
Managing water flow by diverting, controlling, or containing runoff.
Popular Erosion Control Solutions:
Erosion Control Blankets (ECBs)
Made from materials like coir or straw matting, these blankets provide long-term stability to slopes.
Often used with seed underneath to promote vegetation growth.
Hydroseeding and Bonded Fiber Matrices (BFMs)
Pros: Affordable, fast-growing, and visually appealing.
Cons: May compete with native plant regeneration.
Polyethylene Sheeting
Ideal for small, temporary applications such as stockpiles.
However, it is labor-intensive, generates non-recyclable waste, and is unsuitable for large areas.
Real-World Examples of Erosion Control
Before: An uncapped laydown area with exposed slopes leads to sedimentation issues. | After: The solution? Capping the area, raising the road, and extending rip-rap for slope stability. |
Before: Recently disturbed slopes without energy dissipation | After: Adding rock linings and energy dissipation structures solves the problem. |
Before: Water pooling due to undefined ditches and unprotected slopes. | After: By compacting the slope, forming a ditch, and lining it with rock, water flow is controlled effectively. |
Sediment Control: Catching What Escapes
If erosion control measures fail—or aren’t feasible—sediment control steps in to capture loose soil before it pollutes waterways. The Sediment Control Triangle emphasizes the interplay of three factors: energy, water, and sediment. If all three are present, sediment control becomes essential.
Sediment Control BMP's
Silt Fences
Installed at the base of slopes, these barriers trap sediment.
They require proper installation and ongoing maintenance to remain effective.
Catch Basin Protection
Catch basin "donuts" or curb inlet filters prevent sediment from entering storm drains.
They serve as the last line of defense, protecting waterways from sediment, debris, and pollutants.
Spring Berms
These dissipate stormwater energy, preventing rill and gully formation.
Sediment Ponds and Tanks
For large-scale projects, sediment ponds and tanks are indispensable. They allow sediment to settle out of water before it is released or reused. The design and functionality of these systems vary based on site conditions but provide a critical buffer against sediment discharge.
Why It All Matters
Erosion and sediment control isn’t just about following regulations—it’s about protecting the environment, enhancing public perception, and reducing costs. Key benefits include:
Avoiding fines and legal actions.
Preventing stop-work orders.
Mitigating harm to aquatic life.
Improving site efficiency by maintaining clean access and egress points.
Reducing costly rework caused by sediment damage.
A clean site isn’t just a productive site; it’s a responsible one. By implementing effective erosion and sediment control practices, we can build a better future for our communities and our planet.
Grant Lindemulder - LinkedIn
BA Environmental Management
Environmental Specialist | Special Projects Manager | BMP Supplies