Sheet Flow Construction Erosion Control

December 23, 2021

Catch Basin Protection

Title: Down the Drain-Catch Basin Protection

Topic: How do you project a catch basin during construction? Is a catch basin insert enough? What are you trying to protect it from-sediment, turbidity, gravel? How to you protect non-standard catch basins, slot drains, curb drains? What about covering them to keep everything out? Should you use plugs in the storm pipe? These and other questions will be discussed in this brief overview of catch basin protection.

Speaker: Dave Jenkins, CPESC, has over 25 years experience in heavy civil, public works construction as an erosion control and stormwater engineer, resident engineer, and construction inspector. He is trying to retire, but feels the need to keep going back to work and is closing out a habitat restoration project for the Port of Seattle.

Date: 2021 December 20, 12:15 to12:45pm

Organization: Pacific Northwest Chapter-International Erosion Control Association Website: http://www.pnwcieca.org/

October 6, 2020

Trash Bag Catch Basin Cover

Filed under: Uncategorized — Sheetflow @ 3:38 am
Photo: David Jenkins

I don’t recommend using a trash bag as a catch basin cover, but in an emergency, until a permanent BMP can be installed, use what you have.

Photo: David Jenkins

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.

September 7, 2020

Trash Bag Catch Basin Cover

Photo: David Jenkins

In an emergency, a heavy duty trash bag can provide catch basin protection until a more permanent BMP is installed.

September 2, 2020

Why is There Foam Around the Catch Basin?

Photo: David Jenkins

Why is there foam around the catch basin? I will give the answer tomorrow.

July 31, 2020

Catch Basin Covered-Infiltration

catch basin covered to allow infiltration of construction stormwater in hole cut in asphalt and filled with rock
Photo: David Jenkins

This is the first project we have cut asphalt to allow construction stormwater to infiltrate. The area is paved, flat. The sweeper runs constantly but the water is still too turbid to go down the drain. The fill soil under the asphalt is sandy. If we just covered the catch basin with 30 Mil PVC, the area would just flood, then drain to another catch basin. Solution? Cut out a section of asphalt full depth to the sandy soil, fill with 3 to 5 inch rock. This way the water infiltrates but vehicles can drive over the hole. This is working really well so we will be doing this on future container dock upgrade projects.

June 30, 2020

Sand Bag Berm Around Catch Basin

Photo: David Jenkins

You can’t get a good seal with a sand bag berm. Dirty water down the drain.

May 19, 2020

I Know There’s a Catch Basin in There Somewhere

Photo: David Jenkins

I know there’s a catch basin in there somewhere. Can you identify all of the materials? I think there are five or six types.

October 30, 2019

Open Catch Basin Fixed Again

photo: David Jenkins

As of two days ago, the open catch basin is fixed again; there is new 30 mil PVC under the catch basin grate and turbid water is not draining into the catch basin. The contractor told their staff not to puncture the PVC. No word on whether they are thinking more proactively about this. The best measure is to keep the stockpile covered and the area cleaned up. We shall see what’s next.

October 29, 2019

Open Catch Basin Open Again

Photo: David Jenkins

The saga continues… the next inspection looked like the first inspection. The open catch basin is open again. 500 + NTU water draining into the catch basin. What happened?

Photo: David Jenkins

As suspected, someone didn’t like the flooding, so they punctured the 30 mil PVC. I am wondering why the contractor erosion control lead is not finding this.

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