Watershed / Riparian Restoration

Evergreen was formed in 2006 by partners each with more than 20 years of experience working for the top environmental engineering firms in the region. The following projects were conducted by principals of Evergreen prior to joining Evergreen.

Pine Creek Scenic River Study, Pennsylvania Department of Natural Resources, Division of Scenic Rivers and Wetlands Conservation, Tioga County, PA.  Conducted a study of Pine Creek to determine its qualification for entry into the Pennsylvania Scenic Rivers System.  The study entailed a review of the cultural and natural resources within an 18-mile corridor from Ansonia to Blackwell.

Melwood Springs Stream Restoration, Prince George’s County, MD.  Remediation of a small stream stressed by the unmanaged release of storm water from an existing residential subdivision.  The combination of increased discharge and steep channel gradient have contributed to headward downcutting of the channel bed, bank erosion, and downstream sedimentation.  Utilized Rosgen stream classification methods to identify potential restoration methods for the distressed stream reach.  The final design combined engineered stream meanders and bioengineered bank stabilization techniques to mitigate the erosive energy of the stream.  At completion, this project will provide Prince George’s County with a showcase for various restoration methods while fulfilling the mitigation requirements of the developer.

Marley Creek, Anne Arundel County, MD.  As required by a Section 404 permit, conducted field investigations of sites identified in Phase II of the Marley Creek Watershed Assessment.  This step was required as part of developing final design plans, specifications, and estimates for two proposed projects.  Prior to commencing with final design, coordinated with the regulatory agencies concerning the suitability of these sites and to solicit technical input.

Engineering Study of the Swan Creek Watershed, Harford County, MD.  Participating in the selection of water quality and stream restoration sites.  Identifying potential wetland impacts, assessing concept designs, and coordination with state and federal agencies regarding ability to permit proposed sites.

Missouri River Bank Navigation and Mitigation Project, U.S. Army Corps of Engineers, Omaha District, Hamburg Bend, Otoe County, NE; California Bend, Harrison County, IA; and Langdon Bend, Nemaha County, NE.  Conducted field investigations of wetlands and other biological resources.  Analyzed field, modeling, and resource agency data to aid in selecting the proposed alternative which best met the goal of restoring large river fisheries habitat, chutes, wetlands, and/or migratory waterfowl habitat.  Authored sections of Definite Project Report(s), which addressed the requirements of NEPA, the Federal Endangered Species Act, and Section 404 of the Clean Water Act.  Responsible for researching and developing alternatives for terrestrial habitat and for backwater wetland complexes.

Ohio Water Service, Project Manager.  Project Manager of a water quality study that identified sources of acid mine drainage into a series of reservoirs used to serve residential customers.  Collected and analyzed lake and stream water samples.  Also initiated correspondence with state-level pollution control agencies that resulted in remedial action by the State of Ohio.