FORMER SMELTER MIXED-USE REDEVELOPMENT
ENTACT executed comprehensive remedial action activities at a former smelter site, focusing on managing and consolidating onsite debris, as well as decontaminating and demolishing the remaining smelter buildings. On this project, ENTACT: Regraded more than 1.3 million cubic yards of slag and soil, including slag piles as large as eight acres and up to 50 feet tall Distinguished five separate slag categories by color and gradation for targeted utilization in various sections of the development Removed impacted soil and sediment
CANAL SEGMENT CONTAMINATED SEDIMENT REMEDIATION
ENTACT executed the remediation of mercury and lead contaminated sediments along a 3,600-linear-foot segment of a closed canal. This project involved the construction of a temporary remediation support area and several key operational components to ensure effective sediment removal and management. Our team successfully addressed sediment contamination and enhanced the ecological and recreational value of the canal area. On this project, ENTACT: Constructed a temporary remediation support area with two dredge processing cells, a temporary water pretreatment system area, multiple
FORMER OILFIELD AND SERVICE FACILITY EXCAVATION AND BACKFILL SERVICES
Oilfield Excavation and Backfill Services ENTACT conducted remediation activities at a former oilfield and service facility to address soils impacted by volatile organic compounds (VOCs), nonaqueous phase liquids (NAPL), and BTEX (benzene, toluene, ethylbenzene, and xylene). This project effectively remediated the contaminated site, preparing it for potential future use. On this project, ENTACT: Excavated 3,268 cubic yards of impacted soils Performed self-hardening cement-bentonite slurry-supported excavation of 13,000 cubic yards of impacted soils Transported and disposed of 25,500 tons of excavated
LAKE RESERVOIR DREDGING
White Lake Dock & Dredge, a division of ENTACT, performed emergency mechanical dredging of more than 120,000 cubic yards of contaminated sediments from a remote reservoir within an active mining operation. The project was initiated in response to a critical lack of reservoir capacity that threatened ongoing mining activities and water management operations. ENTACT’s team rapidly mobilized under Mine Safety and Health Administration (MSHA) requirements and completed all dredging and material management activities in less than 100 days. Despite the
MANISTEE RIVER MGP REMEDIATION
White Lake Dock & Dredge, a division of ENTACT, executed an MGP remediation project on the Manistee River. The project included the dredging of 30,000 cubic yards of manufactured gas plant (MPG)-impacted sediment from a half mile stretch of the river. The sediments were solidified with Portland cement in lined dewatering pits prior to disposal at the landfill. This project was successfully completed while navigating the complexities of a busy waterway, ensuring environmental compliance and operational efficiency. On this project,
RIVER DREDGING PROJECT
ENTACT dredged petroleum-impacted sediments from a major river system following a spill event. The project included the construction of temporary facilities, an access haul road connecting the staging area to the United States Army Corps of Engineers (USACE) causeway and capping an upstream outfall. This comprehensive approach ensured the effective removal of contaminated sediments while restoring the river environment. Upon project completion, ENTACT had: Dredged 1,300 cubic yards of impacted sediment Dewatered and conditioned sediment with Portland cement Transported and
WASTE OIL PITS SUPERFUND SITE
ENTACT performed in-situ stabilization (ISS) of 45,000 cubic yards of hydrocarbon sludge at a former waste oil pits site located within a cypress swamp. The project faced significant challenges, including the relocation of a half-mile section of an existing stream away from the former waste pits. These efforts contributed to the effective remediation of the site while minimizing environmental impact and preserving the surrounding ecosystem. Upon project completion, ENTACT had: Performed ISS of 45,000 cubic yards of hydrocarbon sludge Excavated
MANISTIQUE RIVER AREA OF CONCERN – OU2 ZONES 5 AND 6
The Michigan Department of Environment, Great Lakes, and Energy contracted with White Lake Dock & Dredge, a division of ENTACT, to provide dredging and remedial capping services in the Manistique River. This project focused on addressing polychlorinated biphenyl (PCB) contamination in river sediments. This comprehensive remediation effort effectively addressed PCB contamination, ensuring the protection of the river ecosystem and compliance with regulatory requirements. On this project, ENTACT: Dredged 42,000 cubic yards of PCB-impacted sediment, including 1,100 cubic yards classified as
FORMER LASALLE MGP SITE SEDIMENT REMEDIATION
White Lake Dock & Dredge, a division of ENTACT, LLC, conducted the dredging of more than 75,000 cubic yards of manufactured gas plant (MGP) impacted sediments from the Illinois River. This complex project involved extensive coordination among four major contractors working on various scopes of work simultaneously. This project not only addressed sediment contamination but also showcased innovative techniques in marine operations and remediation practices. Our team: Dredged more than 75,000 cubic yards of MGP-impacted sediments Provided marine support for