Whidbey Island Naval Air Station: Stormwater Assessment, Planning and Habitat Mitigation Planning and Design

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ESA is providing engineering, hydrological, and geomorphological services as part of environmental mitigation and stormwater planning at the Naval Air Station on Whidbey Island, Washington. With a focus on stormwater, ESA is assessing surface water and groundwater conditions in the Ault Field watershed to evaluate existing conditions and calibrate stormwater modeling. Using hydrologic (stormwater) modeling, we are better able to assess potential effects of increased impermeable surfaces.

ESA is formulating traditional and Low Impact Development (LID) stormwater management practices that could be implemented to mitigate the potential hydromodification project impacts. ESA is also assisting in identifying, formulating, and assessing habitat enhancement projects that would mitigate for potential project impacts to wetland habitat. These potential mitigation areas are located on Whidbey Island and include freshwater wetland, creek, and tidal sites. Our team has helped to develop a preferred mitigation alternative through field reconnaissance and assessment of the feasibility and value of the various potential mitigation sites, as related to hydrology, geomorphology, and constructability. From this work, one mitigation site was selected near Crescent Bay Creek. ESA continues to assist with this project through design documentation, groundwater and surface water monitoring, permitting, bid solicitation support, and construction compliance monitoring.

ESA is working as part of a larger team with the Naval Facilities Engineering Command (NAVFAC) to provide engineering, hydrological, and geomorphological services as part of environmental mitigation and stormwater planning at the Whidbey Island Naval Air Station in Washington.

Specialized Services

  • Hydrologic and hydraulic modeling
  • Low impact development