Suspended Geomembrane Cutoff Wall
Groundwater at a site in central Maine had become contaminated from past activities at the site. In order to make the site suitable for future uses, the contaminated groundwater had to be isolated.
Fore Points Marina, Portland, Maine
Geosyntec practitioners oversaw a comprehensive marina redevelopment in a historic location.
Municipal Solid Waste Relocation and Disposal Capacity Expansion Using MSE Wall Technology at Crossroads Landfill
The Crossroads Landfill has been in operation since 1976 to serve the waste disposal needs of Maine residents and businesses. Waste Management Disposal Services of Maine (WMDSM) acquired the facility in 1990. Through a series of Maine Department of Environmental Protection (MDEP) permits, WMDSM has expanded the facility to cover approximately one half of the 897-acre site. With the continuing demand for residential and commercial waste disposal services throughout New England, WMDSM chose to create additional disposal capacity at the site. They also want to reduce the potential long-term environmental liability associated with more than one million cubic yards of waste in unlined cells that came with the site purchase. WMDSM selected Geosyntec to provide engineering, permitting, and construction quality assurance services for the phase expansion of the facility.
Evaluation of Remote Sensing and Modeling as Tools for Planning Coastal Marsh Restoration Projects
Although coastal salt marshes are now protected, man-made structures such as roads, bridges, undersized culverts, and earthen dikes remain as barriers that reduce tidal exchange and degrade habitat. Structures that reduce saltwater flows lead to long-term salt marsh habitat degradation through promotion of brackish invasive plants, poor water quality, and creation of physical barriers that limit access to nursery, refuge, and forage resources for fish.
