DTE CCR Pond Closure
East China Township, Michigan
DATE OF COMPLETION
September 2018 (55 working days)
PRIME CONTRACTOR & ENGINEER
Stabilize 73,075 cubic yards of CCR Sludge with Portland cement.
The project involved stabilizing CCR material in two ponds. The green areas are standing water which was pumped off while the work was in progress. The CCR material was sludge that was too soft to support equipment. The original estimate was 55,000 cubic yards of CCR based on the bottom elevation shown on historic drawings. ISS began at the north ends of the ponds. The bottom elevation dropped steadily as the work progressed to the south. LTC established the top and bottom elevations of the mixing cells by fabricating a probe to fit a telehandler and equipping it with GPS.
The photo (bottom left) was taken standing on the north end of the eastern pond looking south. The northern half of the eastern pond is stabilized and ISS is being performed on the western pond.