Sheetflow Erosion Control Erosion Control for CESCL's

September 4, 2020

What Every CESCL Should Know

Filed under: Web Site — Tags: , , , , — Sheetflow @ 2:37 am

Be sure to sign up: IECA Washington Virtual Connection: What Every CESCL Should Know, September 23rd and 24th online.

Wednesday, September 23rd
Thursday, September 24th

On-Demand Presentations – you will be notified as these are posted:

  • Improving Specification of Subsurface LID Measures with Jason Bailey, PE

September 3, 2020

Source of the Foam-Dewatering

Photo: David Jenkins

The contractor has to dewater to dig an excavation for an electrical duct bank-the water table is high. The soil is mildly contaminated so all of the water has to be treated in a Chitosan-enhanced Sand Filtration (CESF) system with granular activated carbon (GAC) before discharge to the waterway. The contractor set the well points, hooked them up to the pump but not the CESF system. So, water went directly onto the ground from the pump and into the nearest catch basin. The foam is from the silt in the soil that has been aerated by the pump.

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.

September 1, 2020

Compost Sock Damage

Photo: David Jenkins

Compost socks won’t take hard use. Constant movement and driving on them tears them up so they should be used in areas that don’t get much traffic or at the base of fence and jersey barriers.

August 31, 2020

Close Call Cut in Half

Photo: David jenkins?

Close Call Cut in Half

While driving pile, one hit a soft pocket and the pile “ran” 20 feet or so. The hammer came down, nothing there to hit, cable holding the pile driving hammer broke, the hammer fell, hit an excavator boom, bounced off and hit the boat.

The pile buck in the boat, having quick reflexes and a clean change of boxers, jumped into the bay just in time; no one hurt.

August 28, 2020

What Every CESCL Should Know

Filed under: Web Site — Tags: , , , , — Sheetflow @ 3:37 am

Be sure to sign up: IECA Washington Virtual Connection: What Every CESCL Should Know, September 23rd and 24th online.

Wednesday, September 23rd
Thursday, September 24th

On-Demand Presentations – you will be notified as these are posted:

  • Improving Specification of Subsurface LID Measures with Jason Bailey, PE

August 27, 2020

Protecting a Trench Drain, Part 2

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My post yesterday, Protecting a Trench Drain talked about the difficulty of protecting trench drains. This is what can happen if you don’t protect them. These photos show sheen from oil and grease generated by construction activities around the slot drain during a rainstorm.

Photo: David Jenkins

August 26, 2020

Protecting a Trench Drain

Photo: David Jenkiins

Protecting a trench drain is difficult. I don’t think anyone makes a catch basin insert for them. I sometimes have to plug them or weld plate over them to keep sediment out.

August 25, 2020

Portable Spill Kit

Photo: David Jenkins

It’s always a good idea to have a bunch of portable spill kits on the job. Put one in the cab of each piece of equipment for quick response when hydraulic hoses break.

August 24, 2020

Construction Access with Steel Plates

We built a construction access with steel plates across this stormwater swale. Then we laid compost socks and straw wattles along side of the eco blocks placed along the edges.

The adjacent parking lot drains into the swale and must be protected from dirty construction stormwater discharges.

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