Sheetflow Erosion Control Erosion Control for the CESCL

September 30, 2020

Slope Covered with Plastic

View of slope on Site 25 Habitat Restoration Project. Photo: David jenkins

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

Photo: David Jenkins

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 28, 2020

Large Woody Debris

Filed under: Video — Tags: , , , , — Sheetflow @ 2:32 am

We have to clear mature trees from this site so we can excavate down to create valuable riverbank habitat. We are saving the trees and will use them as large woody debris like log edges, root wads, and other habitat features.

This was a test to see if we could save the root mass. With a good operator keeping the tree from falling the wrong way, we were able to reuse the tree on the project. So far, we have used about 25 site trees.

Video: David Jenkins

September 25, 2020

Gravel Berm

Photo: David Jenkins

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

Video: David Jenkins

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.

September 23, 2020

What Every CESCL Should Know

Filed under: Web Site — Tags: , , , , — Sheetflow @ 5:58 am

Today is the day! Be sure to sign up: IECA Washington Virtual Connection: What Every CESCL Should Know, September 23rd and 24th online.

Wednesday, September 23rd
Thursday, September 24th

On-Demand Presentations – you will be notified as these are posted:

  • Improving Specification of Subsurface LID Measures with Jason Bailey, PE

September 22, 2020

Beached Whale Beached Log

Filed under: Photo — Tags: , , , , , , , , — Sheetflow @ 3:34 am
photo: David Jenkins

Is it a beached whale or a beached log? I think this 80 year old log on the Duwamish Waterway looks like Moby Dick. Did you know that the singer Moby is related to Herman Melville?

September 21, 2020

Steel Plate Construction Access

Video: David Jenkins

This is a steel plate construction access that we built across a live stormwater swale. We have installed compost socks along the edge to keep construction runoff out of the swale.

September 18, 2020

What Every CESCL Should Know

Filed under: Web Site — Tags: , , , , — Sheetflow @ 5:36 am

Be sure to sign up: IECA Washington Virtual Connection: What Every CESCL Should Know, September 23rd and 24th online.

Wednesday, September 23rd – What Every CESCL Should Know
Thursday, September 24th-What Every CESCL Should Know

On-Demand Presentations – you will be notified as these are posted:

  • Improving Specification of Subsurface LID Measures with Jason Bailey, PE

September 17, 2020

Compost Sock Catch Basin Berm

Photo: David Jenkins

This compost sock catch basin berm works well as it is heavy enough to stick to the asphalt. Note the tear and I would keep an eye on it during inspections.

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