Sheetflow Erosion Control Erosion Control for the CESCL

December 4, 2020

Extruded Asphalt Berms

Here are a few examples of extruded asphalt berms or curbs:

Presentation: David Jenkins

This berm keeps clean water from draining off the asphalt to the right into the work area to the left. If the clean water was allowed into the work area, the contractor would have much more dirty water to deal with.

Presentation: David Jenkins

This is another example of using asphalt to keep clean runoff from entering the work area.

Presentation: David Jenkins

In this project, we are removing and replacing the asphalt surface on the left. The asphalt curb is used to keep the dirty runoff on the right from entering the work area. Candlesticks are used to delineate the project boundary and keep vehicles from driving over the berm.

December 3, 2020

Some More Asphalt Berms

Here are some more asphalt berms:

Presentation: David Jenkins

This contractor surrounded an excavation with asphalt berms to direct clean water away from the work and keep dirty water inside the work area. There is a pump behind the sand bags on the right to pump dirty water back into the project. Note the berm that directs street runoff directly to the catch basin.

Presentation: David Jenkins

This contractor has used a hot mix asphalt berm to separate the work area from the roadway to the right. All water and sediment is directed to the pump across the access road which sends the water to a stormwater treatment system.

December 2, 2020

Asphalt Berm

Presentation: David Jenkins

This is a cold patch asphalt berm used to contain high pH water from a concrete crushing operation.

Presentation: David Jenkins

Hot mix asphalt used to contain project water and direct it to a sump and pump. The water was pumped to a header pipe that was connected to a chitosan-enhanced treatment system.

October 28, 2020

Gas Can in Trash Can

Photo: David Jenkins-Sheetflow Erosion Control

Does this gas can in a trash can meet the requirements of secondary containment? I would say yes because the trash can has more volume than the gas can.

October 27, 2020

Dusty Spalls

Video: David Jenkins-Sheetflow Erosion Control

Dusty Spalls-sounds like the name of a cowboy in an old “B” western film. These quarry spalls came with enough crushed rock dust to create a fugitive dust cloud when dropped into a “skip” box.

October 26, 2020

Temporary Boot Wash

We were excavating a riverbank next to a former Superfund cleanup site and we hit a layer of black soil. I stopped the work and called out an Environmental Agent (EA). The EA took samples of the soil and sent them to a lab for analysis. I had the contractor rope off the area and build a temporary boot wash at the site entrance. It turned out the soil was clean.

October 23, 2020

Small Oil Spill

I usually require a contractor to clean up a small oil spill like this. We will remove all of the soil on this project and dispose it as mildly contaminated; I let it go this time.

Video: David Jenkins-Sheetflow Erosion Control

October 22, 2020

Stay on the Plates

Video: David Jenkins-Sheetflow Erosion Control

Please stay on the steel plates! We are using steel plates for a construction access to this long, narrow site. We exit onto the parking lot of an adjacent company. Sediment trackout is not an option. There is no place to install a tire wash, which I would normally require on a project like this. This requires a lot of oversight to work and one of the things we expect is for trucks to stay on the plates so they don’t pick up any dirt on the tires. This driver didn’t get the message, and the excavator operator could have beeped to stop the driver from backing too far.

October 21, 2020

Perimeter Controls Presentation

I am giving a presentation on Perimeter Controls: Non-standard Practices for Managing Water and Sediment today at noon. Go to Erosion and Sediment Control Association- British Columbia for information and to sign up. It’s only 10 bucks.

Description-Silt fence is not the only perimeter control BMP option. It is not the best option in many situations. In this presentation, I will discuss when silt fence makes sense, when it doesn’t, what other options are available.

October 20, 2020

Steel Plates Trackout

Video: David Jenkins-Sheetflow Erosion Control

Trackout happens when you back trucks off of the steel plates onto dirt to unload materials. The plan was for trucks to stay on plates, back to the end and dump. The excavator was to move the materials around the site. There is no tire wash on this project as there isn’t room, so staying on the plates is required and necessary. The trackout is onto the neighbors parking lot, our only site access, and they don’t appreciate dirt ending up in their stormwater swale when the rains come.

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