Wetland Mitigation and Restoration Projects
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Our wetland projects have ranged in size from delineations on
individual residential properties to mitigation banks for military
installations. Some of our innovative designs include the creation of
sloped wetlands, infiltration wetlands to meet zero discharge
requirements, and flood plain wetland creation and enhancement for
stormwater storage and bio-remediation.
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| State Game Land 34 Wetland Mitigation Project
Water’s Edge was retained by a non-profit economic development foundation in Clearfield County, PA to provide wetland consultation for development of a 200-acre industrial park. Services included regulatory negotiations, public land site selection for 18 acres of wetland mitigation, development of wetland mitigation concept plans, coordination of mitigation plans and specifications, and state and federal permitting.
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| Slab Cabin Stormwater Bio-retention Project
This project was designed to demonstrate the feasibility and effectiveness of floodplain re-attachment to reduce the pollutant loading in streams impacted by urban runoff. The project uses natural channel designs to reduce channel incision and divert a portion of bankfull stream flows to shallow excavated floodplain wetlands for bio-filtration of nutrients and other pollutants.
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| S.B. Elliott Wetland Restoration
This project involved the restoration of 5 acres of wetlands that were previously drained for a State Tree Nursery. The restoration approach was to identify and delineate effectively drained pockets of uplands within the 12 acre upland/wetland complex and restore wetland hydrology by shallow excavations and hydrologic connections to adjacent wetland areas. Native plantings were completed to restore the site to a forested and scrub/shrub wetland.
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| Hatfield Landfill Expansion Wetland Mitigation
Expansion of the Hatfield Power Plant CCB landfill in Greene County, PA required mitigation for 1 acre of unavoidable wetland impacts. Water’s Edge was retained to evaluate on-site mitigation opportunities, design the wetland mitigation plan, and complete a 105/404 Joint PADEP/COE permit application to authorize the wetland impacts and construct the mitigation wetland at a location selected within the landfill property.
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| Madrona Marsh Wetland Preservation Project
This project involved a study of the feasibility of protecting, restoring and enhancing a 45-acre wetland preserve situated in urban Torrance California. The study included the evaluation of multiple potential new water sources and development of passive treatment and management approaches to reduce existing eutrophication effects and contaminants from urban runoff.
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| Black Oak Mitigation Wetland
Located in Maryland, this project provided an 8.5 acre created wetland to mitigate for unavoidable wetland impacts associated with expansion of an electric utility substation. Services provided on this project included wetland delineations, mitigation plans and specifications, permitting and regulatory coordination, construction management and post construction monitoring.
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| Altoona Campus Sloped Wetland Creation
This project represents a unique application of contour-parallel subsurface clay barriers to create mitigation wetlands on a sloped site in a situation where conventional cut and fill mitigation designs were not possible due to site constraints. This innovative design minimized excavation in and around existing wetlands, eliminated cut and fill slopes, and completely utilized the construction site.
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| Fort Drum Wetland Mitigation Bank Design
This project involved the development of a 50 acre wetland mitigation bank including wetland creation, restoration, enhancement, and protection. Designs included drainage course dikes, hydrologic enhancement, and protective upland buffers to isolate the sites from military training activities. Technical support included permitting and development of a Mitigation Banking Instrument for credits and debits.
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| Rock Springs Wetland Mitigation Project
A unique design was used on this project to create wetlands on a fill area from an associated quarry rather than excavation. This approach greatly reduced the project cost and allowed an undisturbed transition from the created wetland to the surrounding undisturbed upland habitat. Snag trees were left in place in the fill area for immediate habitat benefit.
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| Island at Rock Creek Wetland Management Plan
Development of this residential subdivision will require redirection of two abandoned coal mine discharges and replacement of associated wetlands. To improve the quality of the highly mineralized discharges and reduce thermal impacts to the receiving stream, the mitigation plan will incorporate subsurface flow wetland infiltration beds, followed by cascading channels for re-oxygenation.
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