UNT #1 of Teter Creek ILF Mitigation

UNT #1 of Teter Creek ILF Mitigation Overview

Barbour County, WV

Currently in West Virginia, there is a West Virginia In-Lieu-Fee (ILF) Mitigation Program and subsequent Instrument between the U.S. Army Corps of Engineers (USACE) and West Virginia Department of Environmental Protection (WVDEP). In order to provide compensatory mitigation to offset advanced credit sales, WVDEP relies on contractors or other subsidiaries to identify possible mitigation sites, secure initial landowner interest, and prepare a Concept Plan for review by the Department before moving forward.

After proactively working with the WVDEP to identify and verify service areas that require mitigation credits to be offset by advanced credit sales, GAI financed site identification and landowner investigations to secure surface rights on five known parcels owned by one landowner. GAI prepared a Conceptual Mitigation Plan using a mitigation site in the Tygart Valley Watershed, on an Unnamed Tributary (UNT) of Teter Creek, located in Barbour County, West Virginia.

The Project is situated on approximately 500 acres and will encompass approximately 15,400 linear feet (LF) of stream proposed to be restored, enhanced, or preserved. An additional 5.4 acres of wetland will be established or enhanced and another 35 acres of riparian vegetation buffer will be enhanced and protected.

After approval of the Concept Plan by the WVDEP committee board and receipt of a $5,000 grant, GAI prepared a Mitigation Plan following the Compensatory Mitigation for Losses of Aquatic Resources; Final Rule (“Final Rule”) 33 CFR Parts 325 and 332 (USACE) and 40 CFR Part 230 (EPA). The plan provided a summary of the Project’s existing conditions and expected mitigation potential based on preliminary West Virginia Stream and Wetland Valuation Metric (SWVM) assessment and credit/debit calculations. Upon approval by the USACE and Interagency Review Team (IRT) of the Conceptual Mitigation Plan, GAI moved forward to collect the baseline data collection, conduct topographic and geomorphic surveys, and hired a subconsultant to fly the site and prepare an aerial with LiDAR and contour mapping.

The site has currently been bid for construction, and upon completion, will provide biological and ecological uplift, riparian buffer enhancement, and restoration of resources within the Tygart Valley Watershed. Project highlights and deliverables include:

  • 5,700 LF of Level I restoration or establishment;
  • 4,900 LF of Level 3 restoration;
  • 2,500 LF of enhancement;
  • Design drawing package of 56 sheets, including plan, profile, and cross section views and design tables for 29 streams;
  • Replacement of undersized culverts;
  • Permitting and erosion and sediment control plan development; and
  • Construction plans, specifications, and bid support.

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