Southwest Washington Regional Airport Improvements

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The City of Kelso’s Southwest Washington Regional Airport needed several improvements to make the airport into a regional hub. Through federal, state, and local funding, Kelso was able to increase the separation distance between the runway and taxiway, widen the taxiway, remove existing hangars that encroach on Federal Aviation Administration (FAA) safety areas, and reconstruct hangars.

ESA managed the preparation of a cultural resources technical memorandum in compliance with the Federal Aviation Act’s NEPA requirement to facilitate project review under Section 106 of the National Historic Preservation Act. From performing a cultural resources survey to wetland surveys, our experts authored an Environmental Assessment and Biological Assessment in compliance with NEPA and the Endangered Species Act. During the second project phase involving runway lengthening to allow for a stop area, ESA performed a wetland survey of the extension area, prepared a SEPA Checklist, and performed cultural resources surveys of the proposed wetland mitigation area. We designed a mitigation plan to meet regulations and minimize project impacts to natural resources.

ESA’s team of environmental, biological, and cultural specialists partnered with the City of Kelso to ensure that each phase of the FAA funded airport improvement project was completed in compliance with federal, state, and local regulations.

Specialized Services

  • Environmental compliance documentation
  • Historical investigations, documentation, and plans
  • Inventories and reporting
  • National Historic Preservation Act (NHPA)
  • Native American, ethnographic, and archaeological studies
  • Permitting assistance
  • Section 106 compliance and documentation