Sheetflow Erosion Control Erosion Control for the CESCL

November 30, 2020

Compost Socks

Filed under: Power Point — Sheetflow @ 1:53 am

As I have written in previous posts, compost socks make excellent perimeter berms, especially when used on impervious surfaces. Make sure to overlap the ends and don’t drive over them. Recycle the compost when done.

Presentation: David Jenkins
Presentation: David Jenkins

November 27, 2020

Compost Berm

Filed under: Power Point — Sheetflow @ 1:51 am
Compost berm at perimeter of airport infield work on taxiway. Photo: David Jenkins
Compost berm at edge of asphalt before taxiway demolition. Photo: David Jenkins

We used to use silt fence when we did construction on the airfield. More and more we are using compost berms. The airfield grades are very small, maybe 20:1.

Compost berms can contain bare soil areas, filtering turbid water. When complete, we spread the compost and hydroseeded.

November 26, 2020

Why Perimeter Controls?

Filed under: Power Point — Sheetflow @ 1:43 am
Presentation: David Jenkins

Why are perimeter controls necessary? Here are few reasons: keep clean water out of your project and keep dirty water and sediment in your project.

November 25, 2020

Non-Standard Perimeter Controls

Filed under: Power Point — Sheetflow @ 1:33 pm
Presentation: David Jenkins

Last month, I did a presentation on non- standard perimeter controls. These are controls other than silt fence, which is the standard perimeter control on construction projects.

While silt fence is the appropriate perimeter control in many situations, (the bottom of a slope), it is inappropriate is so many other situations.

Over the next few weeks, I will post the presentation slides and talk about some of the non-standard controls.

November 24, 2020

Creative Slop Bin

Video: David Jenkins-Sheetflow Erosion Control

I call it a creative slop bin but really it’s an old loading dock. We had to do a storm system repair and needed a place close to the work to hold the vactor slurry temporarily. The catch basin grate has plastic under it.

November 23, 2020

Erosion Controls in Olympic National Park

Video: David Jenkins-Sheetflow Erosion Contr

Recently, I stopped to check out erosion controls on the way to the Staircase in Olympic National Park.

November 20, 2020

Bubbling Crude

Photo: David Jenkins-Sheetflow Erosion Control

This “bubbling crude” could be from an episode of ” The Beverly Hillbillies”, but it isn’t. This is oil from a leaking underground storage tank we found on a Superfund cleanup project.

November 19, 2020

A Rare Beast

Photo: David Jenkins-Sheetflow Erosion Control

Here is a rare beast: a vacuum sweeper with working spray nozzles and nothing dripping out of the back.

This has been such a problem that I included the following language in my erosion control specification:

1.) Vacuum sweepers shall have on-board water spray systems operating at all times.  

2.) Sweeper systems shall function per manufacturer specifications including, but not limited to, water spray systems, blowers, vacuum nozzles, hoses, debris hopper, hydraulics and electrical.

3.) At no time shall debris hopper seals leak debris and/or liquids

November 18, 2020

The Problem with Hosing Tires

Photo: David Jenkins-Sheetflow Erosion Control
Photo: David Jenkins-Sheetflow Erosion Control

What is the problem with hosing tires? Water-specifically “Process Water”. Water that is used in a process, like hosing tires, is classified as process water and must be dealt with as though it is contaminated; because it is, with oil, grease, and various metals. So, if you are going to hose tires, you must plan to collect and dispose of the water legally. Legal disposal means a special processor for treatment and discharge or sanitary sewer.

November 17, 2020

Silt Fence Here?

Photo: David Jenkins

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.

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