Would I put silt fence here? I would not. The work involves installing an 8 inch ductile water line to a property up the hill. The connection to service is at the left orange cone. The other orange cones are located on the backfilled excavation. I would have specified a gravel berm, asphalt berm, burlap fence, orange construction fence, or a combination.
November 17, 2020
September 30, 2020
Slope Covered with Plastic
We have covered a slope above the Duwamish Waterway with plastic until landscaping occurs in December. The contractor has done a great job overlapping the plastic sheets and securing them with sand bags.
September 29, 2020
Sod Berm Perimeter BMP
This is not one of my projects but we have used this method on occasion. Why install silt fence when you can create a sod berm perimeter BMP?
In this case, the area is small and it is surrounded by vegetation so the risk of erosion and turbid runoff is low. In addition, the sod is full roots and seeds so it will regrow in place, providing additional erosion prevention.
September 25, 2020
Gravel Berm
When we rebuilt this road, we had the contractor blade the gravel base course into a berm along the edge. This created a berm to project the bare area on the left from erosion caused by runoff from the roadway.
The gravel berm was bladed smooth just before installing a curb along the edge of the road. The bare soil was hydroseeded with bonded fiber matrix.
By using the gravel in this way, we avoided installing silt fence, preventing the soil disturbance that causes and keeping a bunch of plastic out of the landfill at the end of the project.
September 24, 2020
Biodegradable Erosion Control BMPs: Burlap Fence Compost Sock
Biodegradable Erosion Control BMPs: Burlap Fence Compost Sock
My goal was 100% biodegradable BMPs on this habitat restoration project. In this video I show the burlap silt fence and the compost socks.