We started this superfund riverbank cleanup in 2013, finishing in early 2015. The project involved removing over 40,000 cubic yards of PCB-contaminated soil.
The project was in the inter-tidal zone; the contractor maintained vertical and horizontal separation between the excavation the the tide level.
We prevented trackout by placing grizzlies from the road back into the site. Truck drivers backed up to the steel plate near the excavator and dumped their loads. The excavator operator moved the material into the proper piles. The truck tires came in clean, stayed clean on the grizzlies and left clean. With thought and planning, we didn’t need to install a tire wash.
This trackout was preventable. Asphalt was removed by the contractor to work on the new building foundation; the 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, the trucks could have stayed on the asphalt driveway to unload. Site equipment could have been used to move the gravel.
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 could have stayed on gravel rather than driving on dirt.
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.
This location and poor silt fence installation makes no sense. I would have had the contractor install the silt fence to the temporary fence.
I watched the contractor install this old silt fence twenty years ago. The county widened the road and left it; more plastic in the environment.
I was impressed watching this contractor digging a trench and placing dirt in a loader bucket. They took the dirt to a stockpile area protected with best management practices.
It’s a chilly day on the waterfront watching as the contractor is driving concrete piles.
When I get frustrated with a contractor allowing mud to leave their project, I wipe tires. I tell them ” Dirty tires don’t leave.”
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.
If you are going to inspect erosion controls, you are going to have muddy boots.
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