Water Resource Management
NorthStar helps public and private clients manage water resources by,
- Restoring rivers, removing & treating sediment, and, constructing subaqueous caps
NorthStar has extensive experience with the restoration of waterways. Not only can NorthStar perform restoration to detailed specifications, but we can also help identify alternate solutions that utilize best practices in construction, treatment, and, disposal in order to meet regulatory and design requirements. In addition, by utilizing the latest GPS technologies, NorthStar can precisely remove and place material to minimize waste at every stage of restoration.
- Designing and building reservoirs, levees, wetlands, and, conservation areas,
NorthStar’s professional staff is experienced with Design, Engineering During Construction & Construction Management and NorthStar’s crews are experienced with earthwork construction. Our teams work independently or together to create the best solution based on the ecological, regulatory & engineering criteria. By ensuring the design teams and construction teams work together from the beginning we identify means and methods to safely save time and money. We have performed design and construction projects for several districts of the US Army Corps of Engineers, for State Water Management Districts, and, for Commercial clients. We have worked as a Prime Contractor, Subcontractor, and, as Mentor/Protégé. Either as project leaders, or as a team members, NorthStar’s staff have repeatedly demonstrated excellence during all phases of water resource projects.
Some representative projects for each service area are:
Restoring rivers, removing & treating sediment, and, constructing subaqueous caps
The project area covers 3,000 square miles, stretching from the southern Orlando area south to Lake Okeechobee. Restoration is divided into the Upper Basin (referred to as the Kissimmee Headwaters Revitalization Project) and the Lower Basin (referred to as the Kissimmee Restoration Project). The river’s upper basin includes the Upper Chain of Lakes and extends south through Lake Kissimmee to State Road 60. The lower basin includes the area from Lake Kissimmee to Lake Okeechobee. The Kissimmee River Restoration project is intended to restore over 40 square miles of river and floodplain ecosystem including 43 miles of meandering river channel and 27,000 acres of wetlands.
The project area covers 3,000 square miles, stretching from the southern Orlando area south to Lake Okeechobee. The Kissimmee River Restoration project is intended to restore over 40 square miles of river and floodplain ecosystem including 43 miles of meandering river channel and 27,000 acres of wetlands. Restoration efforts will re-establish an environment conducive to the fauna and flora that existed there prior to the channeling efforts in the 1960s. The following are the Corps’s goals and objectives to restore the ecological integrity of the damaged ecosystem: re-establish historic hydrologic conditions; recreate the historical river/floodplain connectivity; recreate the historic mosaic of wetland plant communities; and, restore the historic biological diversity and functionality.
NorthStar performed this remediation project at a former tie treating facility located in Escanaba, Michigan. The scope of services consisted primarily of removing 10,525 cubic yards (cy) of impacted sediment from Lake Michigan and installation of a combination a 78,740 square foot (sf) Soil Bentonite Cutoff Wall (SBCW) and 17,280 sf Steel Sheet Pile Cutoff Wall (SSP). The dredge area extended up to 170 feet from the shore and was mechanically dredged from constructed riprap finger piers with a hydraulic clam shell bucket. Backfilling occurred from barges and from shore using a 105-foot truck-mounted telescoping conveyor belt (telebelt). SBCW and SSP installation occurred concurrently to complete the project in a short window before the onset of winter.
NorthStar performed this remediation project at a former Manufactured Gas Plant (MGP) site (ISS) project located in Portland, Maine. The scope of services consisted primarily of removing over 2,000 cubic yards (cy) of impacted sediment from the Fore River. The work area extended roughly 50 feet from the shore and was required to be performed in the wet, while working from the landside. This necessitated the installation of a heavy section modulus steel sheetpile wall with grouted joints at the shoreline and the use of a long-reach excavator to remove impacted sediment furthest from the shoreline while working from the land side of the sheetpile wall.
Designing and building reservoirs, levees, wetlands, and, conservation areas
NorthStar and Sealaska Corp were contracted by the USACE to provide grading, earth moving, soil screening, liner installation and berm reconstruction at the Pearce Creek Sediment Disposal Facility in Cecilton, MD which included: 2.5 Miles in radius / 300 acres impoundment to hold dredge spoils which come out of the Chesapeake Bay; Heavy grading; 700,000 CY excavated and placed; 450,000 CY of the material screened and placed as cover over installed liner; berms reconstructed to increase height and width; three layer liner system installed over the entire surface including the berms along with a gas collection system; and, build a new sluice and outfall drainage system which channels the water through a designed outfall chute to discharge into the Pearce Creek.
As a component of the Comprehensive Everglades Restoration Program, (CERP), the C-111 Spreader Canal Project has a goal of improving the Everglades wetlands condition by establishing more natural water flows in Taylor Slough, which feeds flows from southeastern Florida to the Everglades. At present, floodwaters from the Miami/Dade County area are routed via manmade canals to Florida Bay, depriving the Everglades of needed water. The purpose of the C-111 Spreader Canal Project is to move this water west into the Everglades. This, in turn, will also improve the timing, distribution, salinity level and quality of water in Florida Bay. It is estimated that about 252,000 acres of wetlands and coastal habitat may be enhanced by the proposed project.
Following the extensive damage of Hurricane Katrina in August 2005, legislation authorized and funded the reconstruction and improvement of the levee system in the New Orleans region. WBV 72 is part of the West Bank and Vicinity Hurricane Storm Damage and Risk Reduction System (HSDRRS). WBV 72 is a clay levee located in St. Charles Parish and serves the system as a Lake Cataouatche Western Tie In Levee (or East-West Levee).
The WBV 72 construction was designed to add to the existing levee, but not directly on top. As in many of the other ongoing improvement projects, the design called for off-setting the new alignment behind the existing levee and building it taller and farther back.
NorthStar was retained by Pfizer as the prime contractor to design and construct the East Side Remedial Components (ESRC) project. The project involved implementation of the USEPA approved site-wide corrective measurements and also included regulatory involvement by the Connecticut Department of Energy & Environmental Protection (CTDEEP) and the USACE for work in tidal wetlands located adjacent to and in the Quinnipiac River.
NorthStar provided design engineering services for the Everglades Agricultural Area (EAA) A-1 Flow Equalization Basin (FEB) from conceptual through Corrected Final / Ready to Advertise design, and engineering during construction (EDC) services. The 15,000 acre EAA A-1 FEB will temporarily detain up to 60,000 ac ft of peak stormwater runoff flows for later controlled release. The concept and implementation of a flow equalization basin is a “first of its kind” project for SFWMD.