Sheetflow Construction Erosion and Sediment Control

November 26, 2019

Track Walking Slopes Reduces Erosion

Filed under: Video — Sheetflow @ 7:46 am

Want a simple and effective way to reduce slope erosion by up to 50%? Don’t back blade your slopes, track walk them!

November 19, 2019

Rain on Roughened Slope Causes Slump of Eroded Mud into Ditch

Filed under: Video — Sheetflow @ 7:13 am

This video shows the effect of a little rain on a “tracked” slope that has a high percentage of silt.

November 12, 2019

Hydroseeding on Blanket Instead of Under Not the Best

Filed under: Video — Tags: , , , , , , , , — Sheetflow @ 7:18 am

This is not the best way to get grass growing. The seed sits on the blanket which is a quarter to half inch above the soil. Since the seed needs to be in contact with the soil to have the best chance of growing, this will reduce the quantity of grass that grows. In a ditch, the more grass the better. The best way is to hydroseed first and then install the blanket.

November 6, 2019

Sometimes There’s Just Too Much Rain

Filed under: Photo — Tags: , , , , , , , — Sheetflow @ 1:08 pm
November 6, 2006 Sea-Tac, Washington Photo: David Jenkins

We were building a new runway, had several hundred acres of open ground, when the big rains came. We were using the stormwater ponds to collect all of the water for a 10 year 24 hour storm event, or 3 inches of rain. All of the water in the ponds was being treated with chitosan-enhanced sand filtration systems before discharge.

The storm of November 6, 2006 was something over the 50 year 24 hour event and something under the 100 year 24 hour event. With the rainfall and the pond over topping, water was discovered draining from the base of the pond. Rock and ecoblocks were placed as an emergency fix to keep the pond from a catastrophic failure. All of the dirty water drained to a creek, but, nothing we could do.

November 5, 2019

Inspecting Sand Bag Check Dams

How to inspect sand bag check dams.

November 4, 2019

ESCA-BC 2019 Conference

I will be at the ESCA-BC 2019 Conference this week up in Coquitlam, British Columbia. I am giving two presentations and a workshop. This is a list of all of the Sessions.

I will be doing the following sessions:

Workshop

Writing Contract Specifications to Achieve Environmental Compliance Workshop

Presentations

Writing Contract Specifications to Achieve Environmental Compliance Presentation

Why Projects Fail to Meet Water Quality Requirements Presentation

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