LAKE RESERVOIR DREDGING
White Lake Dock & Dredging, Inc. (WLDD), a division of ENTACT, LLC, conducted mechanical dredging of more than 120,000 cubic yards of contaminated sediments from a remote reservoir within an active mining operation. The client had water quality issues due to uncontrolled reservoir sediment that threatened the mining operation. The project’s remote location required the construction of access roadways, mobilization of equipment in a mountainous environment, transportation, and disposition of sediments with grades upwards of 17%, and unpredictable weather, including
MANISTEE RIVER MGP REMEDIATION
White Lake Dock & Dredge, Inc. (WLDD), a division of ENTACT, LLC, dredged 30,000 cubic yards of manufactured gas plant (MGP)-impacted sediment from a half-mile stretch of the Manistee River. Materials were solidified with Portland cement in lined dewatering pits before disposal at the landfill. This project required WLDD to work and manage sheen within a narrow channel heavily trafficked by residential pleasure boats and large industrial ships. Operations required coordination with railroad and shipping companies, the United States Coast
RIVER DREDGING PROJECT
ENTACT dredged petroleum-impacted sediments from this major river system, resulting from a spill event. The scope included constructing temporary facilities, an access haul road connecting the staging area to the United States Army Corps of Engineers (USACE) causeway and over the flood levee structure and capping an upstream outfall. ENTACT performed dredging of 1,300 cubic yards of impacted sediment from 0.5-3.8 feet deep from the river; dewatering of sediment, moisture conditioning with Portland cement as necessary, and off-site transportation and
WASTE OIL PITS SUPERFUND SITE
ENTACT performed in-situ stabilization of 45,000 cubic yards of hydrocarbon sludge at a former waste oil pits site within a cypress swamp. Challenges included the relocation of a half-mile of an existing stream away from the former waste pits and excavating 10,000 cubic yards of impacted sediments from within the cypress swamp while preserving tree root structures. ENTACT also installed a perimeter slurry wall, constructed a Resource Conservation and Recovery Act (RCRA) compliant capping system over the entire site, and
MANISTIQUE RIVER AREA OF CONCERN – OU2 ZONES 5 AND 6
The Michigan Department of Environment, Great Lakes, and Energy contracted with White Lake Dock & Dredging, Inc. (WLDD), a division of ENTACT, LLC, to provide dredging and remedial capping services in the Manistique River. This project involved dredging 42,000 cubic yards of polychlorinated biphenyl (PCB) impacted sediment, of which 1,100 cubic yards were Toxic Substances Control Act (TSCA) hazardous material. After the dredging operations, WLDD installed 12,000 cubic yards of granulated activated carbon (GAC)-sand blended material to form an activated
FORMER LASALLE MGP SITE SEDIMENT REMEDIATION
White Lake Dock & Dredge, Inc. (WLDD), a division of ENTACT, LLC, dredged more than 75,000 cubic yards of manufactured gas plant (MGP)-impacted sediments from the Illinois River. This project required coordination between 4 major contractors, all working simultaneously on different scopes of work. In addition to performing all dredging and capping work, WLDD provided all the marine support for the in-situ solidification and stabilization (ISS) operation – the first large-scale floating ISS operation of its kind in the country