The project involved two sites located in close proximity to one another in the headwaters of Long Green Creek in central Baltimore County, Maryland, and was undertaken to provide compensatory mitigation for unavoidable impacts to nontidal wetlands in the Chesapeake Bay watershed. The downstream site accounted for eight acres of palustrine forested wetland restoration, while the upstream site included 14.9 acres of paulstrine forested wetlands restoration, and 2.6 acres of shrub-scrub wetlands restoreation, and 2.6 acres of palustrine emergent wetland restoration and enhancement. Existing conditions within the project areas consisted of a combination of cattle pasture and hay fields in areas of historically drained hydric (wetland) soil.

Ecotone prepared a design using multiple microtopographic cells to maximize retention of surface and intercepted groundwater in the restored wetlands in both project areas. Plans included the interception of fairly persistent hydrology within existing agricultural ditches within the project areas, and distribution of this hydrology throughout the restored wetlands. A planting plan was prepared providing for a combination of forest, scrub-shrub and emergent cover within the restored wetlands, and reforestation of adjacent upland buffer areas using appropriate native species.

Ecotone, Inc. completed all phases of wetland restoration including site selection, easement acquisition, groundwater and soils analysis, grading, sediment control and planting design, Maryland Department of the Environment (MDE), U.S. Army Corps of Engineers (USACE) and Baltimore County Department of Environmental Protection and Resource Management (DEPRM) permitting, construction, and post construction monitoring and maintenance in restoring and enhancing nearly 28 acres of wetlands in the upper reaches of Long Green Creek. The project was designed, permitted, constructed, and planted during the period between April 2005 and September 2007. The landowners were compensated in return for recording a conservation easment on the restored wetland and reforestation acreage. Despite prolonged drought conditions through much of the first 1-2 years following construction, the restored wetlands have exhibited positive wetland functions, with 44 predominantly volunteer wetland species documented in the downstream site and 49 predominantly volunteer wetland species documented in the upstream site in the first year after construction.