Ord. 20640 - Laserfiche WebLink

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ENVIRONMENTAL OVERVIEW nationwide permit or individual permit, depending on the extent of the potential impacts. With regards to surface waters, the project would increase impervious surface at the Airport. 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, or cultural resources; land use; noise and noise-compatible land use; socioeconomics, environmental justice, ; or floodplains because it would occur entirely on Airport property, would not increase the number of aircraft operating at the Airport, and would not change the airfield configuration in a manner that would affect noise. Additionally, the project would not require the relocation of residences or businesses or include land acquisition. The construction, repair, reconstruction, resurfacing, extension, strengthening, or widening of a taxiway can be categorically excluded under FAA Order 1050.1F, paragraph 5-6.4(e), provided that the project would not cause significant erosion or sedimentation, would not cause a significant noise increase over noise sensitive area, or cause significant impacts to air quality. Because the project would not increase the number of aircraft operating at the Airport or significantly change the airfield configuration (e.g., runway use), the project would not s noise contours. In addition, based on a preliminary analysis, the potential air quality effects are not expected to be significant, and adherence to NPDES permit provisions would minimize erosion and sedimentation effects. For those reasons, a CATEX is anticipated to be the appropriate NEPA documentation for this project. 7.3.1.3 Land Acquisition for Green Hill Road Realignment Four parcels are recommended for purchase in order for the Airport to control the land adjacent to Runway 35R RPZ and to relocate Green Hill Road. While the purchase of land does not directly involve environmental effects, the subsequent development of that land would have potential environmental effects. The NEPA documentation for this project would analyze the connected action of developing the land (e.g., the realignment Green Hill Road). The following environmental resource categories may be affected: Air Quality. The project would temporarily increase emissions from construction vehicles and equipment. The increase associated with construction would likely be temporary and minor. Depending on the development of the land, the operation of the project may increase emissions in the area. For example, if a new hangar were constructed, there may be an increase in the number of aircraft and surface vehicles accessing the Airport, which would increase emissions. Aside from construction, the relocation of Green Hill Road would not increase emissions associated with surface vehicles because the vehicular traffic would not be expected to change. A construction emissions inventory would be necessary for the NEPA documentation associated with this project. EUGENE AIRPORT MASTER PLAN 7-7