Sheetflow Erosion and Sediment Control

May 29, 2020

Superfund Riverbank Cleanup

Photo: Port of Seattle

Action shot of the superfund cleanup at Terminal 117 on the Duwamish Waterway, 2013-2014. The water elevation is about plus 1. Everything gets covered with geotextile fabric before the tide comes back in- high tide was likely plus 12 or 13 this time of year. All of the piles and concrete rubble were removed and clean gravel borrow with rip rap cover was installed after all of the contamination was removed.

May 28, 2020

Prevented Trackout

Photo: David Jenkins

Grizzlies were placed from the road back into the site where gravel borrow fill and rip rap were needed. The delivery trucks were singles, no trailers, and backed up to the steel plate near the excavator and dumped. The excavator moved the material into the proper piles. The truck tires came in clean from the paved road, stayed clean on the grizzlies and left clean. No need for a tire wash, just some thought and planning.

May 27, 2020

Preventable Trackout

Photo: David Jenkins

Asphalt was removed to work on the new building foundation. Driveway asphalt was left in place, which is good. Gravel base course was delivered to be placed under the concrete slab. Instead of backing all of the way into the site, over wet dirt, they could have stayed on the asphalt driveway to unload and used site equipment to move the gravel. It is possible that the gravel came in trucks with trailers in which case backing all of the way in was probably necessary to avoid blocking traffic on a fairly busy street. With some added cost, single dump trucks could be used as described above and prevented the track out. While this is not a lot of dirt on the road, it does add up and is a magnet for inspectors and regulators to visit the site. The contractor could also have dumped gravel next to the asphalt, then graded it back into the site to provide a construction access into the site. In this way, the delivery truck, even with trailer, could have stayed on gravel rather than driving on dirt.

May 26, 2020

Dead End Silt Fence Installation

Photo: David jenkins

May 25, 2020

Twenty Year Old Silt Fence

Photo: David Jenkins

May 22, 2020

Digging a Trench and Placing Dirt in a Loader Bucket

Photo: David Jenkins

May 21, 2020

Driving Concrete Piles

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May 20, 2020

Dirty Tires Don’t Leave

Photo: David Jenkins

Photo: David Jenkins

May 19, 2020

I Know There’s a Catch Basin in There Somewhere

Photo: David Jenkins

May 18, 2020

Inspecting Equals Muddy Boots

Photo: David Jenkins
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