Maintenance Storm Drain Repair

It’s been a couple weeks and a couple of days of a major storm water repair project for the grounds staff at Glen Echo. A 3’diameter galvanized pipe gathers water from about 30 acres above the grounds maintenance building and dumps it into the right side creek just past the red tee on #1. The pipe was 220 feet long and runs within about 5-10’ from our maintenance building, under our car parking area, driveway and greenhouse. It sits at a depth of 5 feet at the beginning to about 12’ as it dumps into the creek. We’ve evacuated well over 100 tons of soil, rock and asphalt as we prepared the new pipe channel.

We have the pipe installed and are 2/3 of the way in getting the pipe completely buried. We still have some large debris piles in our parking area that will be moved to the long driving range back lot area.
Over the month of February, we have to get the greenhouse vase pad made and build the greenhouse against the building as we prepare for the new growing season of landscape plants. They will arrive by the 1st of March.

Sinkhole in the greenhouse 

Bottom 1/3 of pipe was rotted out. Galvanized pipe is guaranteed to last 25 years according to manufacturer’s. This pipe was in the ground for over 50 years

Greenhouse being removed. Greenhouse was built against the building for sunlight maximization, utilization of existing heat source and electricity.

We actually used a walk behind asphalt cutter since we had to cut 440’ of asphalt.

Our initial dig hole to locate our problem. Pipe rotted out at bottom was the verdict.

https://youtu.be/f7R1MvyEAGE

Guys digging and chipping out old pipe from headwall and enlarging opening for new pipe.

https://youtu.be/Kmsoliy6f44

Began project with our backhoe digging the more shallow end to save time when large unit arrived.

https://youtu.be/hfzNxF1lmOA

Big rig digging.

Rented trackhoe in action working on the large tree root wad.

Large tree root wad at end of pipe that had to be removed. Took Skip over 8 minutes to dig out the remaining stump with the very large trackhoe that was rented

Pipe remnants after being dug out.

We attempted to reduce the total width of the dig but many sections along the building collapsed during the  work on the project.

Soil remnants that will be stored for future use in the back of the range.

Gravel used to help backfill the pipe. Most of this material was used and  recycled from the MSD project that was done along the metro link tracks and 1 fwy in 2012