Unnamed Tributary of Isaacs Creek Stream Restoration Project

Unnamed Tributary of Isaacs Creek Stream Restoration Project Overview

West Virginia

GAI assisted in the assessment of resources and the development of compensatory mitigation plans for the impacted resources after the U.S. Environmental Protection Agency (EPA) issued a Consent Decree to our client for multiple violations of the Clean Water Act during the construction of natural gas well drilling pads and associated facilities throughout West Virginia.

Through post-construction site evaluations and forensic delineations, GAI determined that activities associated with this project resulted in impacts to 455-linear feet of perennial stream. Utilizing the West Virginia Stream and Wetland Valuation Metric (SWVM) as guidance, GAI determined the total debris for the impacts at each site, as well as the required credits to provide enough off-set. Designed within a constrained environment, GAI developed a mitigation and restoration plan which provided enough SWVM credits to offset the debits, resulting in 256-feet of stream restoration. Additional mitigation was provided by the client via allotment of credits from an off-site permittee-responsible mitigation site within the same watershed.

GAI was involved in baseline condition assessments, hydrologic and hydraulic analysis, stream design utilizing Natural Channel Design approaches, and federal, state, and local permitting.

During construction, GAI was on-site conducting construction monitoring and completed an as-built survey after construction completion. GAI will conduct annual monitoring and prepare monitoring reports for the next five years, documenting conditions and performance standard compliance.

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