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ENVIRONMENTAL OVERVIEW associated with the various projects is not expected to cause a noticeable increase in light emissions from the Airport. Water Resources. The project has the potential to affect water resources, specifically wetlands, surface water, and groundwater. Prior to the start of ground disturbing activities, the Airport would be responsible for having wetlands in the area of planned ground disturbing activities officially delineated in order to determine the regulatory agency with jurisdiction over the wetlands, and the appropriate mitigation for potential effects. Assuming that the wetlands are regulated by the U.S. Army Corps of Engineers, the Airport would be responsible for obtaining a nationwide permit or individual permit, depending on the extent of the potential impacts. With regards to surface water and groundwater, the project would increase impervious surface. The increase in impervious surface would increase the volume of stormwater runoff; however, the existing stormwater drainage system is anticipated to be able to accommodate the increase in stormwater runoff. Because the project would disturb over one acre of land, the Airport would be responsible for obtaining a NPDES construction permit prior to the start of ground disturbing activities, and all construction activities would be required to comply with the provisions set forth in that permit. The project would not affect Section 4(f) resources; farmlands; historical, architectural, archaeological, and cultural resources, land use, noise and noise-compatible land use; socioeconomics, environmental justice, and cenvironmental health and safety risks; or floodplains because it would occur entirely on Airport property, would not increase the number of aircraft operating at the Airport, would not change the airfield configuration, would not require the relocation of residences or business, or involve land acquisition. An EA is anticipated to be the appropriate NEPA documentation for this project. 7.3.1.9 Taxiway C/M Rehabilitation The Airport plans to rehabilitate Taxiways C and M. The following environmental resource categories may be affected: Air Quality. The project would temporarily increase emissions from construction vehicles and equipment. The increase would be temporary and minor. A construction emissions inventory may be necessary for the NEPA documentation associated with this project. Biological Resources. The area is currently paved and the area surrounding the taxiway is mowed and maintained grassland. However, a federally-threatened species, the Streaked horned lark (Eremophila alpestris strigata) is known to be present throughout portions of the Airport. It is recommended that a biological survey be conducted for the presence-absence of this species. Ground disturbing activities associated with the project would primarily affect grassland and potential habitat for the Streaked horned lark. Climate. The project would temporarily increase emissions from construction vehicles and equipment, including GHG emissions. The increase would be temporary and minor. An estimate of GHG emissions could be included in the construction emission inventory. EUGENE AIRPORT MASTER PLAN 7-15