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ENVIRONMENTAL OVERVIEW 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. Similar to the potential air quality effects, the construction has the potential to increase GHG emissions. An estimate of GHG emissions could be included with the construction emission inventory. Hazardous Materials, Pollution Prevention, and Solid Waste. Construction associated with the project could generate solid waste. Waste would be handled and disposed according to federal, state, and local rules and regulations. The project would increase the amount of hazardous materials stored at the Airport. The Airport would be responsible for updating its SPCC plan. Water Resources. The project has the potential to affect water resources, specifically wetlands and surface water. As Chapter 1, Inventory of Existing Conditions describes, on-airport wetlands have not been officially delineated. Prior to the start of ground disturbing activities, the Airport would be responsible for having these wetlands 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 waters, the project would increase impervious surface, but would change the grading of the area. The change in grading would change the flow rate of stormwater runoff in the area. 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; visual effects; 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, and would not relocate residences or business, or involve land acquisition. An EA is anticipated to be the appropriate NEPA documentation for this project. 7.3.1.5 Terminal Roof Replacement The Airport intends to use federal funding for the replacement of the terminal roof, thereby requiring NEPA documentation. The roof replacement would not expand the terminal building or change the number of enplanements or operations at the Airport. The work required for the roof replacement would include construction equipment and construction workers. The following environmental resource categories may be affected: EUGENE AIRPORT MASTER PLAN 7-10