Environmental Best Management Practices (BMPs) are essential tools for protecting natural resources, especially water, across various activities, including construction, agriculture, industrial operations, and urban development. Designed to reduce pollution, manage stormwater, and minimize soil erosion, BMPs utilize methods or structures to control the quantity and improve the quality of runoff water. They can be either structural (physical devices) or non-structural (policies, practices, or procedures such as inspections). BMPs may also be temporary (used during construction) or permanent (integrated into the landscape).
Just like other infrastructure, BMPs need regular inspections, care, and occasional repairs to remain effective. Neglecting maintenance leads to increased erosion, pollution, and regulatory violations, not to mention costly site damage. This guide highlights common BMP types, their purpose, and how to recognize when maintenance is needed to keep them operating efficiently.
Common Types of Environmental BMPs and Maintenance Guidelines
1. Silt fences: Primarily used on construction sites, silt fences contain water and allow sediment to settle out. They do not filter sediment out of runoff water. When to fix:
- Fence is sagging or torn
- Sediment has piled up and is not being removed
- Posts are leaning or have been dislodged
- Water is bypassing the fence
2. Rock Wattles/Fiber Rolls/Baffles: Long cylindrical rolls made of straw, coconut fiber, or synthetic materials; these devices are placed on slopes or in channels to slow runoff and capture sediment. When to fix:
- Wattle is dislodged or undercut by water
- Stakes are missing or loose
- Sediment buildup is excessive or flowing around the roll
- Water is bypassing or creating rills around the ends
3. Vegetative Swales: Shallow, planted channels that slow and filter stormwater run-off. When to fix:
- Vegetation is sparse or dead
- Signs of erosion along the flow path
- Standing water (poor drainage)
- Trash/debris clogging flow path
4. Erosion Control Blankets: Biodegradable mats that stabilize soil on slopes and disturbed areas to prevent soil loss (i.e., erosion) and promote vegetative growth. When to fix:
- The blanket is torn, slipping, or missing
- Stakes or anchoring pins are loose or missing
- Areas show signs of washouts or soil movement
- Vegetation has not taken root after the expected time
5. Rock Check Dams: Small, temporary dams made from rock that are placed across swales or channels to slow water flow and reduce erosion. When to fix:
- Rocks are dislodged or washed away after storms
- Water is cutting around the edges of the dam (needs extension or reinforcement)
- Excessive sediment buildup upstream
- Channel is eroding downstream of the dam
6. Stormwater Basins (Detention/Retention Ponds): Basins that hold run-off during storms and release it slowly to prevent flooding and erosion. When to fix:
- Standing water remains for too long (sign of clogged outlet)
- Excessive sediment buildup
- Erosion around inlet or outlet pipes
- Uncontrolled vegetation or invasive plants
7. Inlet Protection: Barriers around or inside storm drain inlets to trap sediment before it enters the storm sewer system. When to fix:
- Sediment buildup blocking water flow
- Materials sagging or displaced
- Damage from vehicles or equipment
General BMP Maintenance Tips
Proper maintenance is crucial to ensure the effectiveness and longevity of BMPs. To help you stay proactive, here are some general tips for maintaining your BMPs:
- Inspect frequently, especially after heavy precipitation and/or snowmelt events
- Remove sediment and debris promptly to prevent failure
- Re-secure or replace damaged BMPs as needed
- Check for signs of water bypass or unintended flow paths
- Keep documentation of inspections and repairs for compliance
By following these tips, you’ll keep your BMPs functioning effectively and avoid potential problems in the future.
Why Routine Maintenance Matters
BMPs are critical in protecting the environment but are not “set-it-and-forget-it” solutions. Regular inspections, sediment removal, and structural repair work ensure they continue to function as intended. Proper maintenance minimizes pollution, avoids costly site damage, and maintains compliance with environmental regulations.
Whether it’s silt fences, rock wattles, or stormwater basins, every BMP plays a vital role. A proactive approach not only protects the surrounding environment but also safeguards your project from unnecessary costs.
Want expert guidance on BMP maintenance? EHS Support can help. Contact Us.
