Project
Profiles
Capping
of Former Metal Hydroxide Sludge Lagoon - United Technologies Corporation
North Haven, Connecticut
Significant
Facts:
- First
successful transplant of frost weed, an endangered plant species, in the
State of Connecticut
- Excavated
over 1,150 tons of impacted soil from site and placed it in a landfill
- Shaped
and graded 1,000 cubic yards of material on-site
- Installed
80,000 square feet of a geotextile liner system
- Backfilled
and compacted 1,500 cubic yards of sand drainage layer and 750 cubic yards
of topsoil
- Hydro-seeded
the cap area and installed 1,100 linear feet of chain link fence on the
perimeter of the site
Mercer's
Pond Dam Repair & Restoration
Client Confidential
Danbury, Connecticut
Significant
Facts:
- Installed
the first concrete labyrinth weir in Connecticut
- Installed
a concrete sluiceway
- Repaired
400 feet of earthen dam
- Installed
drainage at the toe of the dam
Former
Manufactured Gas Plant (MGP) Site Remediation - Liberty Street North - Western
Massachusetts Electric Company (WMECO)
Significant
Facts:
- Site
Specific Safety and Health plan was prepared
- Disposal of 22,000
tons of coal tar contaminated soil/sediment
- River was diverted
to install a coffer dam
- Treated over 1,000,000
gallons of contaminated
water on-site
- Removal of sediment
- Wetlands were restored
Former
Dover MGP Land-Based Remediation
Public Service of New Hampshire,
Dover, New Hampshire
Significant
Facts:
- Former
manufactured gas plant site (MGP)
- Excavated,
transported and disposed of 6,000 tons of coal tar contaminated soil and
1,300 tons of purified waste
- Installed
180 linear feet of Waterloo Barrier
- Stabilized
and disposed of 480 tons of hazardous, lead-impacted soil
- Installed
10 DNAPL recovery wells
- Repaired
a 60" storm drainage pipe
- Replaced
and compacted 10,000 tons of gravel and 36,000 square feet of full depth
asphalt pavement, riverbank riprap and a new concrete boat ramp for a nearby
marina
