Sheetflow Erosion Control Erosion Control for the CESCL

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.

July 30, 2020

Compost Sock Maintenance

Photo: David Jenkins

In order to contain dirty runoff, Compost sock maintenance is critical. Replace the sock or repair the tear with plastic or netting. Place safety cones or candles around the catch basin.

July 29, 2020

Install Compost Socks

Photo: David Jenkins

Install Compost socks with an overlap on each end to maintain a continuous berm. 8 to 12 inches works well. Consider this when figuring out how many you need to order.

July 28, 2020

Compost Sock Perimeter BMP

Photo: David Jenkins

The Compost sock perimeter BMP works better than straw wattles on asphalt as they are heavier and make better surface contact.

July 27, 2020

BMP Graveyard-Straw Wattle

Photo: David Jenkins

Another ten year old straw wattle and the plastic is partly degraded but mostly too strong to pull apart.

July 24, 2020

What Every CESCL Should Know

Filed under: Web Site — Tags: , , , , — Sheetflow @ 1:51 am

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

July 23, 2020

Spill Sausages

Photo: David Jenkins

Nice job of containing the drips from hydraulic hose fittings and pump leaks using spill sausages.

July 22, 2020

Covering Zinc-coated ends of the Steel Piles

Photo: David Jenkins

Need to keep the zinc out of the bay, need to cover the piles a little better.

July 21, 2020

12.5 pH Water

Photo: David Jenkins

If this concrete crushing runoff water measured at 12.5 pH (S.U.), water it would be classified as corrosive hazardous waste. At 11.4 pH )S.U.), it needs treatment with carbon dioxide for discharge.

July 20, 2020

Kiddy Pool

Photo: David Jenkins

The contractor placed this kiddy pool under the light plant motor and drip pan. Oil drips cause a petroleum sheen when rain water is present. The contractor will use spill pads to remove the sheen before discharging the water.

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