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HomeMy WebLinkAboutSEPA E07-015 - PORT OF SEATTLE - SEATAC INTERNATIONAL AIRPORT COMPREHENSIVE DEVELOPMENT PLANPORT OF SEATTLE SEATAC INTERNATIONAL AIRPORT COMPREHENSIVE DEVELOPMENT PLAN 2 CD'S IN LAND -USE BINDER AT FRONT DESK - DCD E07 -015 Port of Seattle September 5, 2007 Page l of 3 Notice of Availability Seattle- Tacoma International Airport Comprehensive Development Plan National Environmental Policy Act (NEPA) Final Environmental Assessment and Finding of No Significant Impact Date of Issuance: September 10, 2007 Proponent/Applicant: Port of Seattle SEPA No. 07 -09 Description of current proposal: The Federal Aviation Administration has issued a Finding of No Significant Impact for development of the 12 near -term Comprehensive Development Plan projects at Seattle - Tacoma International Airport (Sea -Tac Airport). This Comprehensive Development Plan consists of 61 near -term and long -term projects. The 12 near -term projects would be under construction or in operation by the year 2010 and constitute the proposed action. The Port requested FAA unconditional approval of the Airport Layout Plan showing these near -term projects, which represent the proposed federal action in this Final Environmental Assessment prepared under the provisions of NEPA. The Port will subsequently adopt the Final Environmental Assessment and Finding of No Significant Impact (FONSI) under the State Environmental Policy Act (SEPA). The 12 near -term projects would provide the following facilities and improvements: • Taxiway improvements.. Improved airfield efficiency from construction and reconfiguration of several taxiway connections. • Expanded air cargo facilities. Development of additional freight cargo capability on Port land north of State Route (SR) 518. • Terminal roadway improvements. Enhanced airport circulation through expansion of the Upper Terminal Drive and exit ramp and expansion of the Ground Transportation Taxi Holding Lot. • Expanded support facilities. Improved support facilities, including airport maintenance and employee parking, that would be displaced during construction of the improvements described above. • Ground noise reduction. Analysis of the potential benefits of building a noise wall at the north end of the north air cargo ramp to reduce noise from aircraft on the ground. Forty -nine long -term projects, are not part of this approval, and would be initiated in the future. The long -term projects will be subject to further planning and refinement. These projects are addressed in this document to disclose the potential impacts of reasonably foreseeable future actions. It is anticipated that all Comprehensive Development Plan P.O. Box 1209 Seattle, WA 98111 -1209 USA (206) 728 -3000 FAX (206) 728 -3252 www.portseattle.org POS SEPA No. 07 -09 September 5, 2007 Page 2 of 3 projects would be undertaken by 2024, when the airport is forecast to reach the estimated capacity of the three - runway system at Sea -Tac Airport. The Port requested FAA conditional approval of these projects, subject to future NEPA review, and is evaluating these long -term Comprehensive Development Plan projects as programmatic or non- project level actions under SEPA. For purposes of environmental review, one development alternative for the 12 near -term projects and the alternative of no action have been identified and evaluated. The No Action Alternative represents existing infrastructure and facilities, but is also expected to reflect the completion of other development projects that have received separate NEPA and SEPA reviews and approvals. Location of current proposal: The project site consists primarily of Port of Seattle owned property including the Sea -Tac Airport and other off -site lands. Sea -Tac Airport is located entirely within the City of SeaTac, and is approximately 12 miles south of Downtown Seattle in King County, Washington with access directly off State Route (SR) 99/International Boulevard to the east and SR 509 from the north. The following areas have been addressed in the Final Environmental Assessment: The Comprehensive Development Plan Final Environmental Assessment evaluates a development alternative for the near -term projects and the alternative of no action. The following areas have been addressed in this Final Environmental Assessment: Surface Transportation, Air Quality, Water Quality, Wetlands, Floodplains, Fish, Wildlife and Plants, Noise, Coastal Resources, Compatible Land Use, Construction Impacts, Department of Transportation Act Section 4(f), Earth, Farmland, Hazardous Materials, Pollution Prevention, and Solid Waste, Historical, Architectural, Archeological, and Cultural Resources, Light Emissions and Visual Impacts, Public Services and Utilities, Secondary (Induced) Impacts, Socioeconomic Impacts, Environmental Justice, and Children's Environmental Heath and Safety Risks, Wild and Scenic Rivers. For each of these elements, the Final Environmental Assessment identifies any probable significant environmental impacts, any relevant mitigation measures and any significant unavoidable adverse impacts that may be anticipated. Final EA/FONSI Available: Copies of the Final EA and FONSI are available at the following locations for a 10 -day information review period: • Copies may be reviewed and downloaded at the Port's website at http : / /www. port seattle. org/community /environment/. • Copies are available for viewing at the Port of Seattle's Engineering Services Department, Second Floor Bid Counter Office at Pier 69, 2711, Alaskan Way, Seattle, WA, during business hours of 8:30 AM to 4:00 PM. • Copies are available for viewing at the Sea -Tac Airport Office (far south end of the Mezzanine Level of the Main Terminal) during business hours of 8:30 AM to 4:00 PM. POS SEPA No. 07 -09 September 5, 2007 Page 3 of 3 • Copies of these documents are accessible for review at the Federal Aviation Administration Airports District Office at 1601 Lind Ave. SW, Suite 250, Renton, 98057. • Copies of these documents are also accessible for review at the following public libraries: Bellevue (1111 110th Avenue NE), Burien (14700 Six Avenue SW), Boulevard Park (12015 Roseburg Avenue S), Des Moines (21620 11th Avenue S), Federal Way (848 S. 320th St.), Foster (4060 S. 144th, Tukwila), Kent (212 2nd Avenue N.), Seattle Central Library (1000 4th Street), Tacoma (1102 Tacoma Avenue S), Valley View (17850 Military Rd., SeaTac), White Center (11220 16th Avenue SW). • Persons interested in receiving a copy of the Final EA on CD (no charge) should contact Brenda Thomas at 206 -728 -3382 or by e-mail at-SET3A.p@portseattle.org. • Photocopies can be made at FedEx Kinko's Midway in Kent (23203 Pacific Hwy S). • A limited number of printed copies of the Final Environmental Assessment, revised appendices and FONSI may be purchased at the Port's Engineering Services Department Second Floor Bid Counter at Pier 69. The purchase price is $150. Appeals: Pursuant to Port of Seattle Commission Resolutions No's 3028, 3211, and 3539 the adequacy of this finding may be appealed by filing an appeal with the General Counsel, Port of Seattle, Pier 69, P.O. Box 1209, Seattle, WA 98111 within twenty -one (21) days-of the date the finding. Responsible Port of Seattle Official: Michael D. Feldman, Deputy Managing Director Address: Aviation Division Email Address: SEPA.p @portseattle.org Port of Seattle Phone: (206) 728 -3193 PO Box 1209 Fax: (206) 728 -3188 Seattle, WA 98111 Date: ' 2'i C; - 67- Signature: Responsible Federal Aviation Administration Official: Cayla Morgan Address: 1601 Lind Ave SW, Suite 250 Email Address: Cayla.Morgan@faa.gov Renton, WA 98057 -3356 Phone: (425) 227 -2650 Fax: (425) 227 -1650 More information about the project may be found at the Port of Seattle Environmental web page at www.portseattle.oro /community /environment. Port of Seattle POS SEPA No. 07 -09 Page 1 of 2 Notice of Adoption of Existing Environmental Document Seattle - Tacoma International Airport Comprehensive Development Plan National Environmental Policy Act (NEPA) Final Environmental Assessment and Finding of No Significant Impact Adoption of the Comprehensive Development Plan NEPA Final Environmental Assessment and Finding of No Significant Impact as a State Environmental Policy Act (SEPA) environmental impact statement (EIS) Description of current proposal: The Comprehensive Development Plan consists of 61 near -term and long -term projects. The 12 near -term projects would be under construction or in operation by the year 2010 and constitute the proposed action Forty -nine long -term projects woula be initiated as activity reaches 45 million annual passengers and are subject to further planning and refinement. Proponent: Port of Seattle SEPA No. 07 -09 Location of current proposal: The project site consists primarily of Port of Seattle owned property including the Sea -Tac Airport and other off -site lands. Sea -Tac Airport is located entirely within the City of SeaTac, and is approximately 12 miles south of Downtown Seattle in King County, Washington with access directly off State Route (SR) 99/International Boulevard to the east and SR 509 from the north. Title of document being adopted: Seattle-Tacoma International Airport Comprehensive Development Plan NEPA Final Environmental Assessment and Finding of No Significant Impact. Agency that prepared document being adopted: Port of Seattle for Federal Aviation Administration Date adopted document was prepared: August 2007 - Date of Issuance: September 10, 2007 Description of document (or portion) being adopted: The Comprehensive Development Plan Final En vironmental Assessment evaluates adevelopment alternative for the near -term projects and the alternative of no action. The following areas have been addressed in this Final Environmental Assessment: Surface Transportation, Air Quality, Water Quality, Wetlands, Floodplains, Fish, Wildlife and Plants, Noise ,Coastal Resources, Compatible Land Use, Construction Impacts, Department of Transportation Act: Section 4(0, Earth, Farmland, Hazardous Materials, Pollution Prevention, and . Solid Waste, Historical, Architectural, Archeological, and Cultural Resources, Light Emissions and Visual Impacts, Public Services and Utilities, Secondary (Induced) Impacts, Socioeconomic Impacts, Environmental Justice, and Children's Environmental Heath and Safety Risks, Wild and Scenic Rivers. For each of these elements, the Final Environmental Assessment identifies any probable significant environmental impacts, any relevant mitigation measures and any significant unavoidable adverse impacts that may be anticipated. P.O. Box 1209 Seattle, WA 98111 -1209 USA (206) 728 -3000 FAX (206) 728 -3252 www.portseattle.org POS SEPA No: 07 -09 September 5, 2007 Page 2 of 2 The document is available to be read at (place /time): • Copies may be reviewed and downloaded at the Port's website at http: / /www.portseattle. org/community /environment /. • Copies are available for viewing at the Port of Seattle's Engineering Services Department, Second Floor Bid Counter Office at Pier 69, 2711, Alaskan Way, Seattle, WA, during business hours of 8:30 AM to 4:00 PM. • Copies are available for ,viewing at the Sea -Tac Airport Office (far south end of the Mezzanine Level of the Main Terminal) during business hours of 8:30 AM to 4:00 PM. • Copies of this document are also accessible at the following public libraries: Bellevue (1111 110th Avenue NE), Burien (14700 Six Avenue SW), Boulevard Park (12015 Roseburg Avenue S), Des Moines (21620 11th Avenue S), Federal Way (848 S. 320th St.), Foster (4060 S. 144th, Tukwila), Kent (212 2nd Avenue N.), Seattle Central Library (1000 4th Street), Tacoma (1102 Tacoma Avenue S), Valley View (17850 Military Rd., SeaTac), White Center (11220 16th Avenue SW). • Persons interested in receiving a copy of the Final EA on CD (no charge) should contact Brenda Thomas at 206 - 728 -3382 or by e-mail at SEPA.p @portseattle.org. • Photocopies can be made at FedEx Kinko's Midway in Kent (23203 Pacific Hwy S). • A limited number of printed copies of the Final Environmental Assessment, revised appendices and FONSI may be purchased at the Port's Engineering Services Department Second Floor Bid Counter at Pier 69. The purchase price is $150. We have identified and adopted this document as being appropriate for this proposal after independent review. The document meets our environmental review needs for the current proposal and will accompany the proposal to the decision maker. • Appeals: Pursuant to Port of Seattle Commission Resolutions No's 3028, 3211, and 3539 the adequacy of this finding may be appealed by filing an appeal with the General Counsel, Port of Seattle, Pier 69, P.O. Box 1209, Seattle, WA 98111 within twenty -one (21) days of the date the finding. Responsible Official: Michael D. Feldman, Deputy Managing Director Address: Aviation Division Email Address: SEPA.p @portseattle.org Phone: (206) 728 -3193 Fax: (206) 728 -3188 Port of Seattle PO Box 1209 Seattle, WA 98111 Date ?Att. COt (/ 2tC7 Signature: More information about the project may be found at the Port of Seattle Environmental web page at www.portseattle.oro /community /environment. -7� Port of Seattle Notice of Sea -Tac International Airport Draft Environmental Assessment Comment Period Extension Date of Issuance: May 11, 2007 Description: Pursuant to WAC 197 -11- 455(7), the Port of Seattle hereby extends the Sea - Tac International Airport Draft Environmental Assessment (EA) comment period by fourteen (14) days, from May 11, 2007 to May 25, 2007. Lead Agency: Port of Seattle (SEPA No. 07 -07) Date Draft EA comments are due: May 25, 2007 (4:00 PM). NOTE: the Port will not consider comments received after 4:00 PM on May 25, 2007. Lead Agency Contact: David L. McCraney Position /title: Manager, Seaport Environmental Review & Permitting Address: Port of Seattle P.O. Box 1209 Seattle, WA 98111 Email: mccraney.d @portseattle.org Phone: (206) 728 -3193 Fax: (206) 728 -3188 (Attention: Brenda Thomas) Comments on Draft E.A.: You are invited to provide written comments on the Draft Environmental,. Assessment. All comments must be received by 4:00 PM on May . 25, 2007. Address written comments to David L. McCraney, Manager, Environmental Review & Permitting Port of Seattle, P.O. Box 1209, Seattle, WA 98111 -1209. Comments may also ,be submitted to the Port of Seattle electronic mail address at SEPA.p @portseattle.orq. Please include your mailing address when submitting comments to the electronic mail address. Lead Agency-Responsible Official: Michael D. Feldman Position/Title: Deputy Managing Director Port of. Seattle P. O. 'Box 1209 Seattle, WA 98111 Date: May 8, 2007 Signature: P.O. Box 1209 Seattle, WA 98111 -1209 USA (206) 728 -3000 FAX (206) 728 -3252 www.portseattle.org SEPA Res • ons' • Ie Official Port of Seat Port of Seattle April 12, 2007 POS SEPA No: 7 -06 Page 1 of 3 RE: Seattle- Tacoma International Airport Comprehensive Development Plan Draft Environmental Assessment Dear Environmental Review Recipient: The Draft Environmental Review of the Seattle- Tacoma (Sea -Tac) International Airport Comprehensive Development Plan (CDP) is enclosed. The CDP revises the terminal/landside development program proposed in the Sea -Tac Airport Master Plan Update in 1997. The CDP reflects changes in the aviation industry following completion of the Master Plan Update by maximizing use of existing facilities and reducing the cost of construction. The Comprehensive Development Plan consists of 61 near -term and long -term projects. The 12 near -term projects would be under construction or in operation by the year 2010. The Port is seeking FAA unconditional approval of the Airport Layout Plan showing these projects, which represent the proposed federal action in this Draft Environmental Assessment prepared under the provisions of the National Environmental Policy Act (NEPA). The Port will subsequently adopt the Final Environmental Assessment under the State Environmental Policy Act (SEPA). The 12 near -term projects would provide the following facilities and improvements: • Taxiway improvements. Improved airfield efficiency from construction and reconfiguration of several taxiway connections. • Expanded air cargo facilities. Development of additional freight cargo capability on Port land north of State Route (SR) 518. • Terminal roadway improvements. Enhanced airport circulation through expansion of the Upper Terminal Drive and exit ramp and expansion of the Ground Transportation Taxi Holding Lot. • Expanded support facilities. Improved support facilities, including airport maintenance and employee parking, that would be displaced during construction of the improvements described above. • Ground noise reduction. Analysis of the potential benefits of building a noise wall at the north end of the north air cargo ramp to reduce noise from aircraft on the ground. Forty-nine long-term projects would be initiated as activity reaches 45 million annual passengers and are subject to further planning and refinement. These projects are addressed in this document to disclose the potential impacts of reasonably foreseeable future actions. It is anticipated that all CDP projects would be undertaken by 2024, when the airport is forecast to reach the estimated capacity of the three - runway system at Sea -Tac Airport. The Port is seeking FAA conditional approval of these projects, subject to future NEPA review, and is P.O. Box 1209 Seattle, WA 98111 -1209 USA (206) 728 -3000 FAX (206) 728 -3252 www.portseattle.org POS SEPA No: 7-06 Date: April 6, 2007 Page 2 of 3 evaluating these long -term CDP projects as programmatic or non - project level actions under SEPA. For purposes of environmental review, one development alternative and the alternative of no action have been identified and evaluated. The No Action Alternative represents existing infrastructure and facilities, but is also expected to reflect the completion of other development projects that have received separate NEPA and SEPA reviews and approvals. Location of the Proposal: The project site consists primarily of Port of Seattle owned property including the Sea -Tac Airport and other off-site lands. Sea -Tac Airport is located entirely within the City of SeaTac, and is approximately 12 miles south of Downtown Seattle in King County, Washington with access directly off State Route (SR) 99/International Boulevard to the east and SR 509 from the north. Lead Agency: Port of Seattle SEPA No, 07 -06 The following area have been addressed in this Draft Environmental Assessment: Surface Transportation, Air Quality, Water Quality, Wetlands, Floodplains, Fish, Wildlife and Plants, Noise ,Coastal Resources, Compatible Land Use, Construction Impacts, Department of Transportation Act: Section 4(t), Earth, Farmland, Hazardous Materials, Pollution Prevention, and Solid Waste, Historical, Architectural, Archeological, and Cultural Resources, Light Emissions and Visual Impacts, Public Services and Utilities, Secondary (Induced) Impacts, Socioeconomic Impacts, Environmental Justice, and Children's Environmental Heath and Safety Risks, Wild and Scenic Rivers. For each of these elements, the Draft Environmental Assessment identifies any probable significant environmental impacts, any relevant mitigation measures and any significant unavoidable adverse impacts that may be anticipated. Draft EA Available: Copies of the Draft EA are available at the following locations: • Copies may be reviewed and downloaded at the Port's website at http://www.portseattle.org/community/environment/. • Copies are available for viewing at the Port of Seattle Office at Pier 69, 2711, Alaskan Way, Seattle, WA, during business hours of 8:30 AM to 4:00 PM. • Copies are available for viewing at the Sea -Tac Airport Office (far south end of the Mezzanine Level of the Main Terminal) during business hours of 8:30 AM to 4:00 PM. • Copies of this document are also accessible at the following public libraries: Bellevue (1111 110th Avenue NE), Burien (14700 Six Avenue SW), Boulevard Park (12015 Roseburg Avenue S), Des Moines (2162011th Avenue S), Federal Way (848 S. 320th St.), Foster (4060 S. 144x', Tukwila), Kent (212 2nd Avenue N.), Seattle Central Library (1000 4th Street), Tacoma (1102 Tacoma Avenue S), Valley View (17850 Military Rd., SeaTac), White Center (11220 16th Avenue SW). • Persons interested in receiving a copy of the Draft EA on CD (no charge) should contact Brenda Thomas at 206 - 728 -3382 or by e-mail at SEPA.p®portseattle.org. Executive Summary This Environmental Assessment (EA) has been prepared pursuant to the National Environmental Policy Act (NEPA) in accordance with the requirements of Federal Aviation Administration (FAA) Orders 5050.4B and 1050.1E. The EA analyzes and discloses the impacts associated with the proposed Comprehensive Development Plan at Seattle- Tacoma International Airport (Sea -Tac Airport). It is anticipated that the Port of Seattle (the Port) will adopt this EA as an Environmental Impact Assessment (EIS) pursuant to the Washington State Environmental Policy Act (SEPA) (WAC 197 -11 -610, Use of NEPA Documents). Proposed Action The Comprehensive Development Plan consists of 61 projects, organized into near -term and long -term projects. The 12 near -term projects, shown in Figure ES-1, would be under construction or in operation by the year 2010. The Port is seeking FAA unconditional approval of the Airport Layout Plan showing these projects, and, under SEPA, is completing a project -level evaluation. The Proposed Action under NEPA consists only of these 12 near- term projects because the 49 long -term projects are subject to further planning and refinement. It is anticipated that all Comprehensive Development Plan projects would be undertaken by 2024, when Sea -Tac Airport is forecast to reach the estimated capacity of the three- runway system at the airport. The impacts of the 49 long-term projects are identified in this document for purposes of full disclosure of reasonably foreseeable future actions. FAA would be conditionally approving the long -term projects subject to future NEPA review. Under SEPA, these projects are being addressed through a program /non - project -level evaluation. The proposed Comprehensive Development Plan projects are shown in Figure ES-1 using two sets of colors; green is used to show the near -term projects, and purple is used to show the long -term projects. The proposed projects are also grouped in the following five categories: Airside (A), Terminal (T), Landside (L), Cargo (C), and Other (0). The 12 near- term projects, which represent the proposed federal action, would provide the following facilities and improvements: • Taxiway improvements. Improved airfield efficiency from construction and reconfiguration of several taxiway connections. • Expanded air cargo facilities. Development of additional freight cargo capability on Port land north of State Route (SR) 518. • Terminal roadway improvements. Enhanced airport circulation through expansion of the Upper Terminal Drive and exit ramp and expansion of the Ground Transportation Taxi Holding Lot. SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 ES-1 EXECUTIVE SUMMARY • Expanded support facilities. Improved support facilities, including airport maintenance and employee parking, that would be displaced during construction of the improvements described above. Purpose and Need The Port, as owner and operator of Sea -Tac Airport, has prepared a proposed Comprehensive Development Plan that replaces the terminal /landside development projects approved in the 1997 Master Plan Update. Since completion of the Master Plan Update, airport operations have undergone profound changes. These changes are due to a number of factors, including restructuring of the airline industry and renewed emphasis on efficiency and cost - effectiveness, new technology for ticketing, increasing airline use of terminal and other facilities in common rather than on an exclusive basis, changes in passenger travel behavior, and increased security requirements. The proposed Comprehensive Development Plan reflects these trends and developments in airport operations. The projects in the Comprehensive Development Plan would meet the following needs: 1. Provide airport facilities to efficiently and flexibly accommodate future aviation activity. The Comprehensive Development Plan focuses on the need for efficient terminal, cargo, support, and landside facilities to meet future aviation demand in a manner that allows the Port to respond to the inevitable changes in the aviation industry. 2. Balance the capabilities of major airport components. Because the Third Runway will establish the primary operational capability of the airfield, the Comprehensive Development Plan was developed to balance that capability with terminal and landside development reflecting changes in the industry in the last 10 years. 3. Provide sufficient runway length for unrestricted warm weather departures. The longest runway at Sea -Tac is not long enough to allow all aircraft to take off at maximum takeoff weight, especially during warm weather. Consequently, aircraft flying long distances (e.g., to the Pacific Rim) must sometimes off -load cargo, baggage, or passengers (collectively known as payload). 4. Reduce noise impacts associated with aircraft ground operations. During the 2001 Part 150 Noise Compatibility Plan Update, the Port recommended the construction of a ground run -up enclosure to reduce the noise from engine maintenance testing (called ground run -ups). The Port also proposes to study the feasibility of locating a noise barrier at the north end of the cargo ramp area to reduce noise from aircraft ground operations in nearby residential areas. 5. CRRrdinate develRpP ent 1E "airpRrt nRise cRP patiEility lands" with cRP P unity development needs. This requirement was identified through consultation with the neighboring jurisdictions of Burien and SeaTac following the Master Plan Update. However, these lands were purchased with federal funds for noise compatibility and safety purposes. For the redevelopment of all airport lands, the federal government will review the proposed use, and the development /reuse agreements will reflect all federal requirements, including reimbursement of the federal contribution in land bought for ES -2 SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 8TH AVE S EMORIAL DR S A16, - 1 1 enemas nn sau®a enema L 'S MS MEMORIALDRrs I171-j CO / - - -�I\N co **1 Ir - - - - -- �� % J IZ so• 11 ff 11 � ee- 11 24k. 4kH AVE S . --- 07 sale' 'feel mews. rams tens eenl iaee •uat SOURCE: GIS data (2004 and 2006) from Port of Seattle and King County. Near -Term Projects Building Pavement Demolition Long -Term Projects ® Building Pavement Demolition .//. Renovation !BOMB Potential Building N 0 375 750 1,500 Feet 1 r 1 1 Existing Building Existing Pavement - -J Port of Seattle Property '__ -1 City Boundary Near-Term Airside Al Fire Department Training Area A2 Aircraft Remain Overnight (RON) Parking - USPS Airmail Center Site A3 Taxiway P and 0 Improvements A4 Taxrway J and H Improvements A6 Aircraft RON Parking —Air Cargo IV Site (Project tootpnnt does not appear on map because it is displaced by long -term project A9) A22 Port of Seattle Consolidated Maintenance Facility A29 Port of Seattle Consolidated Airport Warehouse Facility Near -Term Landside L1 South Employee Parking Lot —Phase I L4 South 160th Street Ground Transportation Two Holding Lot L5 Upper Terminal Dnve Widening and Exit Ramp Near -Term Cargo C1 North Freight Cargo Bridge C2 North Freight Cargo Complex (L- Shaped Parcel) Long -Term Airside A5 New Main ARFF Station A7 Aircraft RON Parking —E asting ARFF Site A8 Alaska Airlines North Maintenance A9 North Departure Hold -Pad Al0 Dual Taxilanes South of South Satellite Al2 Tnculator (Bey Dump) Relocation A13 GSE Maintenance (North and South) A14 Dual Taxilanes North of North Satellite A15 North Fuel Rack Relocation— United Cargo Site A16 Aircraft RON Parking at Existing Delta Cargo Site A17 Aircraft RON Parking at Existing AS Maintenance Site A18 South Departure Hold -Pad A19 Secondary ARFF Station A20 Potential Airfield Support Area A21 Extension of Runway 34R A23 Gate Gourmet Demolition A24 Alaska Airlines Office Building and Pedestrian Access A25 Ground Run-Up Enclosure A26 GSE Storage (Multiple Sites) A27 Dual Taxilanes North of South Satellite A28 Dual Taxilanes South of North Satellite A30 Port of Seattle Office Building A31 Noise Wall Study (not displayed on map) Long •Term Landside L6 South Employee Parking Lot —Phase 2 L7 North Airport Expressway Relocation Phase II L9 Lower Dnve Rearculaton Ramp L11 Parking Garage Expansion L12 Parking Garage Ramps L13 South Access L15 Convert Curbs to Alternative II L16 APM Between Main Terminal and RCF Long •Term Cargo C3 North Freight Cargo Hardstand C4 North Belly Cargo Facility C5 South Belly Cargo Airfield Access C6 South Belly Cargo Facility C7 Federal Express Expansion Long -Term Other Projects 01 NESPA Site 1 Development (Lora Lake Property) 02 NESPA 2 and 3 03 55 Acres Long -Term Terminal T1 South Satellite Expansion T2 Main Terminal Expansion Phase I T3 North Satellite Expansion T4 Concourse D Extension T5 Main Terminal Expansion Phase II T6 International Amvals Tunnel T7 Potential Remote Satellite Terminal T8 Central Mechanical Plant Expansion T9 Terminal Renovation T10 Parking Garage -4th Floor Terminal Conversion Figure ES -1 Comprehensive Development Plan Projects (Near Term and Long Term) Sea -Tac Airport Comprehensive Development Plan Environmental Review File Path: ;': Sunda; projt POnofSeattlei3 31239CDcv'_Management<3:S MapDocuments\ProleC CD Prc)ects rnrd, Date March 1 c 2007 3:24:23 PM EXECUTIVE SUMMARY noise mitigation. In addition, a NEPA evaluation will be required prior to development of these projects. Alternatives In defining the range of alternatives to be examined in detail for an EA, FAA Order 505O.4B s tiidl ,I WHHLIHnRunIJiROI-GFEnIO'ts concerning alternative uses of available resources, the range of alternatives may be limited to the no action and proposed action DONIMIKH () AA 2 ifl- 131O5O.1( , SflE U h 405G)." 6I-FIEn 706 (G)(5) RI ) AA Order 5050.4B provides the following guidanFEIlh1 WFIFRnsIGHLVIRn RI "unUiRO}G FRnIn9J' aiGRWHJILFWLi In HWECPshIng We range of alternatives to be considered: (a) Unresolved conflicts may exist between the project proponent and those wishing to use affected environmental resources for non - airport purposes. Typically, an unresolved conflict exists when an airport development project concerns involves or more special purpose law (see paragraph 9t).1 Each reasonable alternative description should contain only that information needed to explain it to someone unfamiliar with airport planning or operations and documentation to support it. An example of an unresolved conflict would be when an airport sponsor proposes locating a runway in a wetland, while a project opponent states the same wetland is valuable for flood retention. (b) In addition to the unresolved conflicts noted in paragraph 706.d.(5)(a), an EA's range of reasonable alternatives may expand after considering: 1. The proposed action's complexity. 2. The variety of expected environmental impacts. 3. Agency experience in dealing with the action's expected environmental issues. The analysis of environmental impacts conducted for this EA indicates that the near -term Comprehensive Development Plan projects would generate one significant surface transportation impact that would be mitigated, and would not adversely affect resources addressed by special - purpose laws as defined in FAA Order 5050.4B. Therefore, this EA retains the No Action Alternative and the Proposed Action (the near -term Comprehensive Development Plan projects) for detailed consideration. As mentioned above, this EA also discloses the impacts of the long -term Comprehensive Development Plan projects, which are considered reasonably foreseeable future actions. No Action Alternative Both NEPA and SEPA require consideration of the alternative of taking no action. Although the No Action Alternative does not meet any of the purposes and needs for the Proposed Action, it was retained for further consideration as required by NEPA and SEPA. Descriptions of the physical and operational characteristics of the No Action Alternative follow. Physical Development The No Action Alternative reflects the existing infrastructure and facilities, but is also expected to include the completion of other development projects that have undergone and 1 FAA Order 5050.4B, paragraph 9t, defines "Special Purpose Law" as federal laws, regulations, executive orders, or departmental orders that are outside NEPA. Examples include the Endangered Species Act, U.S. Department of Transportation (USDOT) Section 4 (f), Section 404 of the Clean Water Act, and others. SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 ES -5 EXECUTIVE SUMMARY completed separate NEPA and SEPA reviews and approvals. A brief description of major Sea -Tac development projects included in the No Action Alternative follows. Port development projects include the following: • pouth 160th ptreet i oop Recirculation Road. This project will be completed in late 2007. • Third Runway. This project will be completed in 2008. • Consolidated Rental Car c acility at pouth 160th ptreet. This project will be completed by 2010. In addition to the above projects being implemented by the Port, the following projects to be implemented by others, regardless of undertaking the proposed Comprehensive Development Plan projects, will affect the No Action Alternative: • Extension of pR 509. This Washington State Department of Transportation (WSDOT) project is expected to be completed by 2020. • pR 518 Route a evelopment/Corridor fmprovements. WSDOT is currently evaluating improvements such as an added eastbound lane and interchange at SR 99. The WSDOT environmental review was completed in March 2007. • pound Transit Airport i ink. This project will extend light rail from downtown Seattle to the Sea -Tac Airport and vicinity and is expected to be operational in 2009. • North Airport Expressway Northbound Relocations. To enable construction of the Sound Transit Airport Link, the North Airport Expressway (NAE) will be relocated. This project will be completed in 2007 or 2008. Airfield and Landside Operations The airfield includes the runways, taxiways, and other areas on which aircraft operate. By 2010, the airfield is expected to accommodate 414,843 aircraft operations annually, an increase of about 13 percent over current (2004 -2006) levels. The proposed Comprehensive Development Plan projects would enable Sea -Tac to efficiently accommodate 45 million annual passengers, or about 550,000 annual operations, expected to occur by 2024. The no action airport layout would also accommodate the anticipated demand for air travel, but in an inefficient manner. In the absence of proposed airfield development, it is likely that airlines would cope with increasing congestion by sharing gates, parking aircraft on existing ramps near the terminal to stage aircraft for gates, using more distant ramps for overnight parking, and reducing the "EuIIHT TR' HEI-W H-h GM:INT and arriving aircraft at gates. In addition, arriving international passengers may be bused from Federal Inspection Services facilities when no international gates are available. Although these operational measures would enable the airlines to accommodate the anticipated passenger and cargo demand, the airlines serving Sea -Tac would incur additional congestion, delay, and operating costs. With respect to landside operations, the term "iGsJU -! W SIIsFhgHJ\MP Inl@ LhG airport roadways. As passenger activity grows, suUIIFHALIIIF Rn INFICILSRLW LRIUwDy system will also increase. Without improvements to the on- airport roadway system, surface traffic would exceed the capacity of the existing 4 -lane Upper Terminal Drive. By 2010, the ES -6 SEAIEXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 EXECUTIVE SUMMARY peak -hour queue on the Upper Terminal Drive would extend northward to between 170th and 160th Streets. By 2024, this queue would extend onto the southbound NAE, westbound SR 518, and the I -5 ramp on SR 518. In effect, a 2.8 -mile -long queue during peak hours would obstruct the Upper Terminal Drive, the Upper Terminal Drive Access Ramp, the Lower Terminal Drive, and parking traffic. As a result of this blockage, less traffic would be able to access all on- airport roadway segments during the peak hour. Comprehensive Development Plan Implementation of the Comprehensive Development Plan would enhance the efficiency of airfield and landside operations compared to the No Action Alternative. Descriptions of the near -term and long -term projects incorporated in the Comprehensive Development Plan follow. Near -Term Projects (Proposed Action) By 2010,12 of 61 Comprehensive Development Plan projects are expected to be under construction or in operation. The Comprehensive Development Plan does not include any additional runways after completion of the Third Runway in 2008. Seven near -term airside projects would provide additional facilities to meet the following needs: • Additional aircraft parking positions • Enhanced gate use efficiency by providing remain overnight (RON) positions • Adequate fire training facilities • Enhanced airfield efficiency and reduced runway incursion potential Three near -term landside projects would meet the following needs: • Additional employee parking due to relocation of existing parking areas and needed to accommodate growth • Additional staging areas for airport taxis, shuttles, and buses Two near -term cargo projects would accommodate the relocation and expansion of cargo facilities in a new North Freight Cargo Complex (north of SR 518) consisting of warehouses, truck access, parking facilities, and a surface vehicle bridge connection to cargo aircraft parking positions (hardstands) on the north side of the existing aircraft movement area. Long -Term Projects By 2024, the remaining 49 of the 61 Comprehensive Development Plan projects are expected to be in operation. These projects are shown in Figure ES-1 and described below. Airfield Projects Twenty -one additional airfield projects would be developed to meet the needs of the airport as activity reaches 550,000 annual operations with about 45 million annual passengers. These projects would provide efficient and flexible facilities to accommodate the anticipated demand, would extend Runway 16L/34R to provide sufficient runway length for warm - weather operations to Pacific Rim destinations, and would address the need to reduce the noise associated with aircraft maintenance engine run -ups and aircraft ground operations. SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 ES -7 EXECUTIVE SUMMARY Terminal Projects Ten additional terminal projects would accommodate passenger demand with efficiency and flexibility at about 45 million annual passengers through moderate expansion of the existing terminal and satellites, a requirement for increased use of existing and future gates, improved internal circulation facilities, and expansion of the mechanical plant. Landside Projects In addition to the three landside projects included in the near -term phase of development, nine landside projects are included to efficiently and flexibly accommodate 45 million annual passengers. These projects would accommodate continued growth in vehicular traffic at Sea -Tac Airport by providing additional parking, improving the existing terminal roadway system and other airport -owned roadways, and enhancing access from the south. Cargo Projects By 2024, five additional cargo projects, including belly cargo facilities, would be developed north of the terminal as well as south of the terminal in the area known as the South Aviation Development Area. Belly cargo facilities such as warehousing do not need direct aircraft access because cargo can be transported to the aircraft using surface vehicles. Therefore, the Comprehensive Development Plan proposes secure surface access between the South Aviation Development Area to the airfield so that belly cargo can be transported between passenger aircraft at the terminal and warehousing facilities in the South Aviation Development Area. Other Projects 7 hH "2 WI/ SU?MWshRwn In) IguU-J( 6 -1 wRu01 DOalis WH3 RLN nH-I W tiMGInEkli consistent with community development needs, development of airport noise compatibility land not required for future airport uses. A regional study, NEST Study: A Study of Development Properties Around Seattle- Tacoma International Airport, identified properties acquired by the Port for noise compatibility purposes that would be suitable for future compatible development. These lands are located north of the airfield in Burien and SeaTac, and south of the airfield in Des Moines. Redevelopment plans for a site south of the airport were initiated prior to the environmental review of the Comprehensive Development Plan (see Chapter 6, Cumulative Impacts). At this time, redevelopment plans for three sites, all located north of the airport, are reflected in the long -term development phase of the Comprehensive Development Plan. These lands were purchased with federal funds for noise compatibility and safety purposes. For the redevelopment of all airport lands, the federal government will review the proposed use, and the development /reuse agreements will reflect all federal requirements, including reimbursement of the federal contribution in land bought for noise mitigation. In addition, a NEPA evaluation will be required prior to development of these projects. Operations Summary The Comprehensive Development Plan would provide airfield and terminal facilities that would enable Sea -Tac Airport to accommodate the growth in aircraft activity with less delay, lower operating costs, and higher levels of passenger service than would be experienced under the No Action Alternative. ES -8 SEAIEXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P-00312243 EXECUTIVE SUMMARY Without landside improvements, peak -hour queues on the Upper Terminal Drive in 2010 would back up onto the southbound NAE, blocking the entrance to both the Upper and Lower Terminal Drives. By 2024, peak -hour queues would back up onto SR 518 as far as the I -5 ramp. In contrast, the Comprehensive Development Plan would limit the 2010 queue on Upper Terminal Drive to within the approach ramps in 2010, thus eliminating blockage to other roadways. By 2024, the Comprehensive Development Plan would reduce the queue to about 1,500 feet compared to 14,800 feet under the No Action Alternative. The Comprehensive Development Plan would have minimal effect on the roadway systems surrounding Sea -Tac Airport. In 2010, the Comprehensive Development Plan would slightly reduce the vehicle miles traveled and the vehicle hours traveled in'this area. The reduction is due to the Comprehensive Development Plan providing parking facilities closer to the origins of employees, providing shorter routes connecting to parking, and relocating air cargo to a more favorable location with respect to local access. By 2024, the Comprehensive Development Plan would slightly increase vehicle miles traveled, but would reduce vehicle hours traveled. The increase in lane miles is due to the addition of the South Access Road. Passengers with an I -5 south origin or destination would travel farther along the new SR 509 route compared to the South 188th Street, South 200th Street, or International Boulevard routes. This additional travel distance would be offset by the enhanced efficiency of the roadway system with the Comprehensive Development Plan. Environmental Consequences The analysis of environmental consequences retained two alternatives for further consideration: the alternative of taking no action, and implementation of the proposed Comprehensive Development Plan. Potential environmental impacts are identified for two different time periods, as follows: • 1 pening vear for Near -Term Projects (2010). This year is representative of the first year in which the near -term Comprehensive Development Plan projects would be in operation.2 Development of these projects represents the Proposed Action for NEPA purposes. • i ong -Term Projects (2024). The 2024 analysis reflects the completion and operation of all the combined near -term and long -term Comprehensive Development Plan projects described in Section 2.3. Long -term projects are proposed to address airport facility needs as Sea -Tac Airport reaches the operating capability of the three- runway system (550,000 annual operations, or about 45 million annual passengers). This level of activity is expected to be reached by 2024. This analysis therefore reflects the combined impact of the entire set of 61 Comprehensive Development Plan projects. Table ES-1 compares key environmental consequences resulting from the No Action Alternative with those resulting for implementation of the near -term and long -term projects of the Comprehensive Development Plan. Although the No Action Alternative generally involves fewer physical changes in the environment, it would result in greater delays and congestion, causing greater impacts on air quality and energy efficiency. Implementation of 2 One near -term project is not expected to be in operation until 2011 (Project L5, Upper Terminal Drive Widening and Exit Ramp). Each near -term project is expected to be completed as needed for operational efficiency. SEAIEXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 ES -9 EXECUTIVE SUMMARY TABLE ES-1 Summary Comparison of Altematives— Environmental Consequences Sea -Tac Airport Comprehensive Development Plan Environmental Review Evaluation Category Basis for Comparison No Action Alternative Comprehensive Development Plan 2010 2024 2010° Opening Year for Near -Term Projects 2024° Near -Term and Long -Term Projects Noise and Compatible Land Use Population inside day -night noise level (DNL) 65+ contour 9,380 14,600 9,380 14,540 Socioeconomic Impacts Properties acquired 0 0 0 1 potential` Surface traffic — number of intersections at LOS D or below 26 33 27 35 Number of street closures 0 0 2 2 Neighborhood division (Yes /No) No No No No Air Quality Carbon monoxide emissions (tons /year) 12,757 17,500 12,757 17,406 Carbon monoxide standard exceeded (number of intersections) 0 0 0 0 Water Resources Increased impervious surface (acres)' 0 0 37 175 Stream relocation (linear feet) 0 0 0 350 Additional stormwater detention (acre -feet) 0 0 13 34 Fish, Wildlife, and Plants° Vegetation eliminated — does not include wetlands (acres) 0 0 40 82 Wetlandsf Wetlands filled (acres) 0 0 0 3 Buffer areas filled (acres) 0 0 0 6 Floodplains Number of projects causing impacts° 0 0 3 possible 14 possible USDOT Section 4(0 Use of USDOT Section 4 (f) properties (number of properties) . 0 0 0 1 1 possible° Light Emissions and Visual Impacts Change in visual character of residential area (Yes /No) No Yes No Yes ° Opening year of near -term projects, although construction of Project L5, Upper Terminal Drive Widening and Exit Ramp, may extend into 2011. b Includes the impacts of near -term and long -term projects. ° Acquisition of a section of one parcel may be required for construction of Project L13, South Access. d Detention does not completely eliminate flow impacts. Additional impervious area generates more runoff and longer periods of higher flows that can change natural hydrology. Reduced infiltration may reduce summer base flows without implementation of avoidance and minimization measures. ° Most of this habitat consists of managed grasses and mixed vegetation. f Approximately 2.13 acres of wetland and 4.7 acres of wetland buffer would be associated with Projects 02 and 03 and are not addressed by the Port's current wetlands fill permit. ° Number of projects that may affect unmapped floodplains. h Tyee Valley Golf Course operates on airport land leased by the Port on a temporary basis. The status of this facility with respect to the provisions of DOT Section 4 (f) has not been determined. Source: Relevant sections of Chapter 5, Environmental Consequences. ES -10 SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 EXECUTIVE SUMMARY near -term Comprehensive Development Plan projects would cause one significant surface traffic impact at the SR 518 east -bound off -ramp at South 154th Street, where the level of service (LOS) of this intersection would drop below approved state and local standards. This impact results from the implementation of Project C2, North Freight Cargo Complex, and would be mitigated. No other environmental impacts from operation of the near -term Comprehensive Development Plan projects would be significant; therefore, once the surface transportation impact is mitigated, there would be no significant impacts. As discussed earlier, the long -term projects incorporated in the Comprehensive Development Plan may require additional refinement to avoid or minimize potentially significant impacts. Summaries for each impact category analysis follow the table. Noise Impacts Implementation of the near -term Comprehensive Development Plan projects would not affect the volume of aircraft activity at Sea -Tac Airport or the pattern of aircraft flights in the surrounding area compared to the No Action Alternative. Aircraft noise levels would therefore not differ from those of the No Action Alternative. By 2024, implementation of one long -term Comprehensive Development Plan project, Project A21, the proposed 600 -foot southward extension of Runway 16L/34R, would slightly decrease the area exposed to 65 day -night noise level (DNL) and greater noise levels because aircraft taking off to the north using the full length of the extended runway would be somewhat higher and, thus, quieter over areas to the north of the airport. The proposed runway extension would increase long -term noise levels in a small area along the extended centerline to the south of the runway; however, significant changes in noise levels3 in the long term would be limited to airport property. Compatible Land Use Existing land use in the Sea -Tac Airport environs is generally compatible with existing aircraft noise levels. As noted above, aircraft noise levels associated with operation of the near -term and long -term Comprehensive Development Plan projects would not differ materially from the alternative of taking no action in 2010. Noncompatible land use would therefore be essentially the same amount under the No Action Alternative and the proposed near -term and long -term Comprehensive Development Plan projects. Most near -term and long -term Comprehensive Development Plan projects would be developed on existing airport property and would be consistent with the existing land use policies of local jurisdictions. Two proposed near -term projects, the North Freight Cargo Complex, Project C2, and the North Freight Cargo Bridge, Project C1, would be developed Rn SU SH. N Rwn WWWH " /- shtSl- CSLIFHD WEVIthe Port previously acquired in the City of SeaTac. This development would be compatIECD1wEldINESIFSH.Ws FuU.Ffiti1AIISRLW Commercial zoning. The City of SeaTac is considering further land use changes in the surrounding area in the Draft South Riverton Heights Sub -Area Plan. Pursuant to the terms of an interlocal agreement between the Port and the City of SeaTac (referred to as ILA -2), the city and the Port will chose the direction of land use for this area. In addition, ILA -2 3 Federal noise compatibility guidelines define significant levels of noise exposure as the day -night noise level (DNL) of 65 or higher. See Appendix El for a description of noise metrics. A project - related significant change would be a 1.5 -DNL increase caused by a project to a noise - sensitive use within the 65 DNL and greater noise contours. SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 • ES -11 EXECUTIVE SUMMARY included existing design requirements for Port development within SeaTac to minimize impacts on nearby residents. As noted in the previous section, the extension of Runway 16L/34R (long -term Project A21) would slightly reduce the extent of the noise contours and associated noncompatible land use to the north of the airport. Operation of long -term Comprehensive Development Plan would be consistent with local land use plans. Socioeconomic Impacts, Environmental Justice, and Children's Environmental Health and Safety Risk No significant adverse socioeconomic or environmental justice impacts on or risks to FhICSCHi's hH UFft FISIMGue to implementing the near -term and long- term Comprehensive Development Plan projects. Implementing the long -term noise 1-1<F SUIEICIW Gala GHrHI SP HiWRU'2 %HT SIRiWWSIRSRsHC1:1 SMARI WH Comprehensive Development Plan, would have the beneficial effect of increasing tax revenues for the Cities of Burien and SeaTac. Surface Transportation With the exception of one intersection, operation of near -term Comprehensive Development Plan projects would have minimal effects on the surface transportation system in the Sea - Tac Airport vicinity. Operation of near -term Project C2, North Freight Cargo Complex, would cause a significant degradation in LOS at the SR 518 east -bound off -ramp at South 154th Street, but not until after 2010. Impacts at this location would be the result of the shift of westbound traffic on South 154th Street away from the existing westbound SR 518 on- ramp to the relocated ramp at 24th Avenue South. Mitigation would include revising signal timing and phasing to ensure acceptable operations of LOS D. Overall, the near -term projects also would not adversely affect regional mobility, transit service and facilities, or freight movement. Compared to the No Action Alternative, implementing the near -term Comprehensive Development Plan projects would improve conditions with respect to nonmotorized transportation and parking. Implementation of long -term Comprehensive Development Plan projects by 2024 would not result in any significant impacts. Compared to the No Action Alternative, implementing the near -term and long -term Comprehensive Development Plan projects would generally improve conditions with respect to nonmotorized transportation and parking. Air Quality Implementation of the near -term Comprehensive Development Plan projects would not alter emissions compared to the No Action Alternative in 2010. The air quality analysis demonstrated that the construction and operation of near -term Comprehensive Development Plan projects would conform to the State Implementation Plan (SIP). Because emissions would be less than the de minimis levels4 established in the General Conformity Rule, no further analysis was required under General Conformity. A project -level Transportation Conformity Analysis was also conducted, as required by 40 Code of Federal 4 "de minimis" levels refer to emissions thresholds below which the air emissions resulting from implementation of a proposed action are presumed to conform to the State Implementation Plan for attainment of National Ambient Air Quality Standards. ES -12 SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 EXECUTIVE SUMMARY Regulations (CFR) Part 93 and Washington Administrative Code (WAC) 173-420, for projects affecting traffic on regionally significant roadways. Intersection dispersion modeling at the most congested intersections affected by these projects indicated that no air quality standard would be exceeded as a result of implementing near -term Comprehensive Development Plan projects. By 2024, increased congestion and delay associated with the No Action Alternative would generate more emissions than the combined near -term and long -term Comprehensive Development Plan projects. Although implementation of the Comprehensive Development Plan projects would slightly alter off - airport surface traffic patterns in the Sea -Tac Airport environs, the air quality impacts associated with these changes would not be significant. The long -term projects would likely exceed de minimis levels during construction, but it is anticipated that these emissions would be within the emissions budget established for Sea - Tac Airport construction activities and would therefore conform to the SIP. Water Quality Construction of near -term Comprehensive Development Plan projects would increase the amount of impervious surface in and around Sea -Tac Airport, leading to increased runoff and additional pollutants. This runoff would be collected, detained, and treated to remove pollutants and reduce stormwater discharges to levels that would not harm the creeks receiving this runoff. In addition, adequate capacity exists in WHDI$RIIW InGus\ DE.ivl:14idl system to handle project increases in stormwater to this system. Near -term Project A22, Port of Seattle Consolidated Maintenance Facility, would be constructed within the stream buffer but would remain within currently disturbed areas and would therefore not further affect this creek. None of the near -term Comprehensive Development Plan projects would have significant water resource impacts after implementation of the proposed avoidance and minimization measures. Several long -term Comprehensive Development Plan projects would be sited near existing streams. Project L13, South Access, would be sited outside the buffer to the extent practical. Project A21, Extension of Runway 34R, would physically cover a 350 -foot length of East Fork Des Moines Creek. This stretch of creek would be relocated and stream habitat measures provided for the relocated portion of the creek. These long -term Comprehensive Development Plan projects would result in small decreases in the seasonal low flows in Walker, Miller, and Des Moines Creeks. Any reductions in low flows would be FRI' SHisDMC IRUW Rugh WH3 RLWW HcIsM ig U w -flow augmentation program. None of the long -term Comprehensive Development Plan projects would have significant water resource impacts after implementation of the proposed avoidance and minimization measures. Fish, Wildlife, and Plants Construction of the proposed near -term Comprehensive Development Plan projects would remove 40 acres of vegetation. The majority of this vegetation consists of managed grasses or mixed vegetation cover that provides habitat for urban- adapted wildlife species. Most of the vegetation within the wildlife study area would be retained and thus would continue to provide wildlife habitat similar to existing conditions. Therefore, no near -term impacts on wildlife species are expected to result from the reduction in vegetation cover. Construction SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 ES -13 EXECUTIVE SUMMARY of the proposed near -term projects would not have a significant impact on resident or anadromous fish species and would not affect habitat or food resources of bald eagles, the only federally listed wildlife species in the study area. Construction of the proposed long -term Comprehensive Development Plan projects would remove about 82 acres of mostly managed grasses or mixed vegetation cover. One proposed long -term project (Project A21, Extension of Runway 34R) would require the relocation of a short section of Des Moines Creek. None of the proposed long -term projects would have a significant impact on resident or anadromous fish species, and the projects would not affect habitat or food resources of bald eagles. Wetlands Construction of the near -term Comprehensive Development Plan projects would not affect wetlands. Near -term Comprehensive Development Plan projects would affect approximately 590 square feet of one ditch potentially under the jurisdiction of the U.S. Army Corps of Engineers (USACE). Construction of the long -term Comprehensive Development Plan projects would cause permanent impacts on as many 3.3 acres of wetland and 6.4 acres of wetland buffer in seven individual wetlands. Construction of long -term Comprehensive Development Plan projects would also affect approximately 7,665.square feet (about 0.18 acre) in 20 ditches that may be subject to USACE jurisdiction. The Port has previously received a permit to affect 19.6 acres of wetlands for implementation of the Master Plan Update. Only 3.3 acres of wetlands would be affected by the future long -term components of the Comprehensive Development Plan. Of these 3.3 acres, 1.38 acres of permanent and temporary impacts have been permitted under the Master Plan Update. Wetland mitigation currently being implemented for Master Plan Update projects exceeds the amount required to offset the impacts of the ongoing Master Plan projects. This excess may be applied to offset impacts on wetlands resulting from the long -term Comprehensive Development Plan projects; these impacts will be re- evaluated in the future under a separate environmental review and in accordance with USACE and other applicable regulations in effect when final design of the projects has been completed. Although USACE does not specify mitigation requirements for ditch impacts, it is anticipated that USACE would require that the ditches be replaced or relocated so that the functions they provide are maintained. Any work that affects ditches will be performed in accordance with USACE jurisdictional authority and / or regulations in effect at the time the action is undertaken. Floodplains Construction of near -term Comprehensive Development Plan improvements would not result in direct impacts on the Federal Emergency Management Agency (FEMA) - delineated floodplains of Des Moines, Miller, Walker, and Gilliam Creeks. Three near -term projects and 14 long -term projects would either cross or be located close to the upper reaches of Des Moines Creek and Miller Creek, where floodplains have not been mapped by FEMA. The proposed projects could encroach upon unmapped floodplains in these locations. The final designs for these three near -term projects would need to adhere to floodplain and ES -14 SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 EXECUTIVE SUMMARY stormwater management regulations intended to prevent downstream impacts on floodplains and flood -prone areas. Construction of long -term Comprehensive Development Plan improvements would also not result in direct impacts on the FEMA- delineated floodplains of Des Moines, Miller, Walker, and Gilliam Creeks. Fourteen long -term projects either cross or are located close to possibly unmapped floodplains in the upper reaches of Des Moines Creek and Miller Creek. At the time each Comprehensive Development Plan project is designed, the Port will adhere to the applicable floodplain and stormwater detention requirements in order to prevent, minimize, or compensate for impacts on floodplains. By following these requirements, the Comprehensive Development Plan would be unlikely to result in the loss of flood storage or conveyance capacity or to cause an increase in peak flows or potential flooding in downstream areas of Des Moines, Miller, Walker, or Gilliam Creeks. Coastal Zone Management Program Angle Lake is the only water body under the jurisdiction of a local Shoreline Master Program, and it would not be affected by the Comprehensive Development Plan. During project permitting prior to construction, the Port will certify that the proposed near -term and long -term Comprehensive Development Plan projects conform to all applicable local shoreline management program policies and Coastal %wne Management Program policies. Wild and Scenic Rivers No wild and scenic rivers, as designated in the Wild and Scenic Rivers Act, as amended (16 United States Code xd.JSC] 1271 et seq.), are located in the airport area. Therefore, no wild and scenic rivers would be affected by the proposed Comprehensive Development Plan or the No Action Alternative. Hazardous Materials, Pollution Prevention, and Solid Waste Construction of near -term Comprehensive Development Plan projects could expose hazardous materials through demolition of six existing Port -owned buildings. Operation of new facilities could also lead to release of materials associated with vehicle operation, cleaning, or maintenance. Adherence to established policies ,and procedures would prevent potentially significant impacts on soil or water. Potential construction impacts would be minimized through cleanup and control of hazardous materials encountered during construction, which would also provide long -term benefits. In addition, facilities developed through near -term Comprehensive Development Plan projects would incorporate modern pollution prevention features, thus reducing the potential for future soil or water contamination. Operation of near -term Comprehensive Development Plan projects would not increase solid waste generation compared to the No Action Alternative. Construction and operation of long -term Comprehensive Development Plan projects would entail demolition of 11 Port -owned buildings and could have similar effects on hazardous materials through construction or future operations. As noted above, adherence to established policies and procedures will minimize potential construction and operations impacts with respect to hazardous materials and soil or water pollution. Operation of long- SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 ES-15 EXECUTIVE SUMMARY term Comprehensive Development Plan projects would not increase solid waste generation compared to the No Action Alternative. Historical, Architectural, Archaeological, and Cultural Resources One resource within the Area of Potential Effect (APE), the Angle Lake School located at the southwest corner of South 192nd Street and 28th Avenue South, has been determined to be eligible for listing on the National Register of Historic Places (NRHP). There are no other listed or potentially eligible historical, architectural, archaeological, or cultural resources within the APE. None of the near -term projects in the Comprehensive Development Plan would affect the Angle Lake School. Therefore, there would be no impacts as a consequence of construction or operation of the near -term projects. Long -term Project A30, Port of Seattle Office Building, may require demolition of the NRHP- eligible Angle Lake School. Currently, design of this project is preliminary. A Section 4(0 evaluation would be completed prior to implementation of this project. Recreation and USDOT Section 4(f) Lands CRns%tiF4 Rn liG RSHlMEn RI nl- MvIP CRP Srehensive Development Plan projects would not alter park or recreation facilities or affect the use of such facilities. No USDOT Section 4(0 or Land and Water Conservation Fund Act (LAWCON) Section 6(0 resources would be directly or indirectly affected by near -term projects incorporated in the Comprehensive Development Plan. Noise conditions under the near -term and long -term Comprehensive Development Plan projects would be no different from those under the No Action Alternative and therefore would not have an impact on any parks, recreation areas, or Section 4(0 resources. The construction of one long -term Comprehensive Development Plan project, the extension of Runway 16L/34R (Project A21), might require the acquisition of approximately 52 acres of Des Moines Creek Park for the Runway Protection Iwne (RPw). The extension of Runway 16L/34R and the construction of the South Access (Project L13) would also require acquisition of the Tyee s alley Golf Course, a privately run business operating as a temporary use on Port property. A Section 4(0 detemination would need to be made prior to implementation of these long -term projects. Earth Operation of the near -term and long -term Comprehensive Development Plan projects is not expected to cause significant impacts. Farmlands No prime or unique farmland would be affected by the near -term or long -term Comprehensive Development Plan projects. Natural Resources and Energy Supply Implementation of near -term and long -term Comprehensive Development Plan projects would not substantially change energy and resource demands compared to the No Action ES -16 SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 EXECUTIVE SUMMARY Alternative. Passenger, aircraft, and vehicular activity would be the same under either alternative. The Comprehensive Development Plan would reduce aircraft and surface vehicle delay, thus reducing fuel use compared to the No Action Alternative. Although Comprehensive Development Plan projects would increase the total building area to be heated, cooled, and lighted, these additional energy demands would be offset to some degree by the replacement of existing buildings and utilities with newer, more HIIFIIhT I . 7hH3RUN susMilnT.EIChiSRlicies encourage sustainable design practices for new structures and renovation. These policies could reduce energy and resource consumption for either alternative, but implementation of the Comprehensive Development Plan would provide more opportunities to apply sustainable building practices. Public Services and Utilities Operation of near -term Comprehensive Development Plan projects would not alter on- airport demand for public services and utilities compared to the No Action Alternative. Accordingly, no adverse impacts on public services or utilities are anticipated. Near -term Project C2, North Freight Cargo Complex, would locally increase utility demands outside of the area currently used for airport - related activity. The Port would upgrade or construct distribution facilities as necessary to extend utility service to this area. No significant impacts on these utilities are anticipated from implementation of the near -term Comprehensive Development Plan projects. Operation of airport related long -term Comprehensive Development Plan projects would also not alter on- airport demand for public services and utilities compared to the No Action Alternative. Long -term Projects 01, NESPA Site 1 Development; 02, NESPA 2 and 3; and 03, 55 Acres, would increase utility demands compared to the No Action Alternative. For these projects, the effect on utilities that provide sewer, water, power, and gas to the area would depend on the ultimate mix of uses, number of employees, the utility consumption of the particular industrial or manufacturing uses, and previously planned system upgrades. Because these projects would be developed in concert with local jurisdictions, it is anticipated that adequate capacity for these projects could be provided. Fire, emergency, and police service at these sites would be provided by the Port. No significant impacts on these utilities are anticipated from implementation of the long -term Comprehensive Development Plan projects. Light Emissions and Visual Impacts Two near -term Comprehensive Development P111 SLRN+W 3I.RMWC1,1 RUH) IHghW Cargo Bridge, and C2, North Freight Cargo Complex —P Di llivaln. GhWP IsslRn RUvIsuID impacts. These projects are proposed adjacent to residential areas that might be sensitive to visual change, although the site's vlsuffiFhalFgdills P RGHDORP papaw ay. 3RWditW D impacts would be minimized through already established design standards for Port projects. In addition, ILA -2 between the Port and the City of SeaTac includes provisions for the city to review and approve proposed design for these facilities. Long -term Comprehensive Development Plan projects that may result in light emission or visual impacts include Project 01, NESPA Site 1 Development; Project 02, NESPA 2 and 3; and Project 03, 55 Acres. Similar to the near -term projects, these long -term projects are near residential areas and would require grading, retaining wall construction, and outdoor SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 ES -17 EXECUTIVE SUMMARY lighting. The areas most sensitive to change are on the southern and western perimeters of Project 02, where residences abut the site. These projects would be developed in concert with the Cities of Burien and /or Sea Tac before permitting and construction, which would minimize the potential for impacts. Secondary (Induced) Impacts The proposed near -term Comprehensive Development Plan projects are not anticipated to result in secondary impacts. The near -term projects would enhance airfield and roadway efficiency and meet other immediate needs for maintenance, cargo, and employee parking. These near -term projects would not lead to increased levels of passenger, aircraft, or surface vehicle activity compared to the No Action Alternative. The near -term projects would not involve community impacts in terms of noise, compatible land use, changes in population or development patterns, or increased utility demand. The long -term Comprehensive Development Plan projects are primarily intended to improve the operational efficiency of Sea -Tac Airport and would be developed on existing airport property acquired for noise compatibility purposes. These projects would not individually or collectively lead to increased levels of passenger, aircraft, or surface vehicle activity compared to the No Action Alternative, and would not result in induced impacts. These projects would not involve community impacts in terms of noise, compatible land use, changes in population, patterns of development, or increased utility demand. Three long -term projects (Project 01, NESPA Site 1 Development; Project 02, NESPA 2 and 3; and Project 03, 55 Acres) would redevelop previously residential land acquired by the Port for noise compatibility or safety reasons. These projects are located on property that is not contiguous to the operational areas of the airport, and they are not required for airport- related uses. The projects would redevelop these sites into commercial, office, and industrial uses that would be compatible with airport noise. The projects would also create employment opportunities and increase tax revenues in the cities of Burien and SeaTac. Because proposed redevelopment would be consistent with local land use policies and transportation plans, these projects are not anticipated to result in adverse secondary impacts. Construction Impacts The analysis of construction impacts examined the peak year of construction for near -term and long -term projects. For near -term projects, the peak construction year is expected to be 2008 for traffic impacts and 2009 for air quality impacts. For long -term projects, the peak construction year is expected to be 2013 for traffic impacts and 2015 for air quality impacts. The analyses of potential construction impacts examined each impact category considered in this EA. Significant construction impacts were identified only for surface transportation, where the LOS at International Boulevard and South 170th Street would drop below acceptable standards in 2008 and 2013. This impact would be mitigated to maintain an acceptable LOS. These analyses concluded that, with appropriate use of best management practices, implementation of the near -term or long -term projects in the Comprehensive Development Plan would not cause any other significant construction impacts. ES -18 SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 EXECUTIVE SUMMARY Cumulative Impacts The analysis of cumulative impacts examined the potential adverse effects of near -term Comprehensive Development Plan projects in the context of other past, present, and reasonably foreseeable actions to determine whether the cumulative impact of Comprehensive Development Plan projects and other regional actions could exceed thresholds of significant impact in any category. Past, Present, and Reasonably Foreseeable Actions A SRI 27 "SI/WSU?3f 9JwH1-iFRnsIQ-IICfor their potential to contribute to cumulative impacts when added to the effects of the Proposed Action. These projects include 20 undertaken by the Port at Sea -Tac Airport pursuant to various environmental approvals, an additional 7 projects approved in the Final EIS and Final Supplemental EIS for the Sea - Tac Airport Master Plan Update, and numerous projects by other agencies such as Sound Transit, WSDOT, other Port divisions, local jurisdictions, and individual property owners. 7hHI3iIJsls RI "SU FhWIF\ns FRnsI1-I.H projects that would be constructed or implemented in 2006. Two projects became operational during this period; these projects include the relocation of the Airport Surveillance Radar and Airport Surface Detection Equipment and the removal of the displaced threshold on Runways 16L and 16C. ) RUWIs IhDE9sIs, WH "IRU-iH-LE®IIuWU -T wIt Q-fined as 2024 because this is the farthest in the future that most Sea -Tac Airport- related environmental impacts data are available. For purposes of the cumulative impacts analysis, the long -term Comprehensive Development Plan were considered to be reasonably foreseeable future projects. In addition to the long- term Comprehensive Development Plan projects, 17 projects are anticipated during this period. These include 7 projects undertaken by the Port at Sea -Tac Airport pursuant to various environmental approvals, and 10 projects by other agencies, including Sound Transit, WSDOT, local jurisdictions, and individual property owners. Potential Cumulative Impacts The analysis of cumulative impacts determined that 25 of the 47 past, present, and reasonably foreseeable projects analyzed have potential to contribute to cumulative impacts when considered in combination with the proposed near -term and long -term Comprehensive Development Plan projects. The remaining 22 projects do not have any impacts that would contribute to cumulative impacts. The greatest potential for cumulative impacts was found in the categories of social and related impacts (specifically, surface traffic) and water resources. Potential cumulative impacts were also identified in the categories of noise; air quality; fish, wildlife, and plants; wetlands; floodplains; and visual impacts. The analysis of potential cumulative impacts concluded that none of these cumulative impacts would exceed thresholds of significance in any environmental impact category. SEA/EXECUTIVE SUMMARY.DOC SEA -TAC AIRPORT COMPREHENSIVE DEVELOPMENT PLAN ENVIRONMENTAL REVIEW PORT OF SEATTLE PROJECT P- 00312243 ES -19