NEPA Support and Ecological Studies​​​

Thunderbird provides a full range of NEPA assessment and documentation support including completion of Environmental Assessments (EA), Environmental Impact Statements (EIS), and ecological studies. Thunderbird has a vast network of trusted teaming partners and subject matter experts that enable us to assist our federal and private sector clients with the NEPA process in a rapid, efficient, and defensible manner. We prepare comprehensive environmental documents that describe purpose and need, evaluate alternatives, characterize the affected environment, and identify the environmental impacts associated with a proposed action. 

Image by Gareth Davies

We provide high-quality services including the preparation of several NEPA environmental documents including.

  • Biological Assessments (BA)

  • Categorical Exclusion (CX) Determinations

  • Environmental Baseline Surveys

  • Findings of No Significant Impact (FONSI)

  • NEPA Environmental Assessments (EA)

  • NEPA Environmental Impact Statements (EIS)

  • Records of Decision (ROD)

Thunderbird’s core natural resource and ecological services range from wildlife habitat evaluations to threatened and endangered species investigations and environmental permitting. Our comprehensive natural resource and ecological services include:

  • Aquatic Habitat Restoration

  • Avian Surveys and Monitoring

  • Clean Water Act Section 316(b) Compliance

  • Fish Surveys

  • Macroinvertebrate Sampling and Analysis

  • Natural Resource Damage Assessments

  • Threatened, and Endangered Species Surveys

  • Vegetation Surveys and Mapping

  • Wildlife Habitat Evaluations

  • Wetland Delineation and Functional Assessments