Sheetflow Erosion Control Erosion Control for the CESCL

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.

October 4, 2019

Broken Waterline

Photo: David Jenkins

This is caused by a broken 16 inch waterline. Fortunately, all of the muddy water was contained in a 72″ storm pipe with a valve. Water was then pumped to a Chitosan-enhanced Sand Filtration (CESF) system for treatment to 5 NTUs for discharge to a creek. Knowing this project was going to be constructed over several winter seasons, we specified the CESF system in the contract.

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