Erosion and Sediment Control
Erosion is a natural process, but construction activities such as removing vegetation, disturbing soil, and redirecting drainage can increase the natural rates of erosion. Sediment is the single most common pollutant in rivers, streams, lakes, and reservoirs. Sediments can also damage stormwater facilities such as catch basins, drywells, and swales - increasing the risk of flooding and resulting in costly maintenance for taxpayers.
The purpose of Spokane County’s Erosion and Sediment Control ordinance (9.14.185) is to control soil erosion and sedimentation through the use of temporary and permanent erosion and sediment control practices.
The ordinance (9.14.185) lists four performance standards to keep in mind during land-disturbing activities:
- Protection of public roads and stormwater facilities
- Proper washout of concrete trucks and equipment
- Protection of private properties
- Protection of water bodies and wetlands
The Stormwater Management Manual for Eastern Washington contains an exhaustive list of best management practices (BMPs) that can be used to make sure construction projects meet the standards listed above.
Here are some of the most commonly used BMP’s, including instructions for inspections and maintenance:
- Silt Fence (pdf)
- Stabilized Construction Entrance (pdf)
- Construction Road and Parking Area Stabilization (pdf)
- Inlet Protection (pdf)
- Wattles (pdf)
- Temporary and Permanent Seeding (pdf)
- Wheel Wash (pdf)
- Erosion and Sediment Control (pdf)
- Erosion and Sediment Control Plan Requirements (pdf)
- Erosion and Sediment Control Techniques (pdf)
For more information on how to become a Certified Erosion and Sediment Control Lead please visit the Washington State Department of Ecology webpage to view upcoming training opportunities near you.