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Port of Seattle Commission
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Ground Transportation Principles and
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Goals Policy Directive
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As Adopted/Amended
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Month D, YYYY
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Document last updated Month D, YYYY
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Port of Seattle Ground Transportation Policy Directive Page 2 of 4
SECTION 1. Purpose.
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This policy directive establishes guidance on ground transportation at the Seattle-Tacoma
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International Airport (Sea-Tac) including principles, goals, monitoring, and reporting; creates an
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Annual Ground Transportation Progress Report; affirms airport commute-trip-reduction (CTR)
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goals; and establishes a transportation management association.
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SECTION 2. Definitions.
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When used in this policy directive, the following words and phrases shall have the meanings
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given below unless the context in which they are included clearly indicates otherwise:
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“Commute-trip reduction (CTR)” refers to the regulations developed under the Washington
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Administrative Code 468-63-010, with the intent to reduce automobile-related air pollution,
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traffic congestion, and energy use through employer-based programs that encourage the use of
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alternatives to single occupant vehicles travelling during peak traffic periods for the commute
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trip.
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“Ground transportation” means non-aviation activities that relate to travelling to and from the
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airport.
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“Scope 3 greenhouse gas (GHG) emissions” refers to the GHG Protocol Corporate Standard that
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classifies a company's GHG emissions into three 'scopes'. Scope 1 emissions are direct
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emissions from owned or controlled sources. Scope 2 emissions are indirect emissions from the
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generation of purchased energy. Scope 3 emissions are all indirect emissions (not included in
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scope 2) that occur in the value chain of the reporting company, including both upstream and
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downstream emissions.
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SECTION 3. Scope and Applicability.
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This policy directive applies to all activities related to ground transportation to and from Sea-
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Tac.
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SECTION 4. Responsibilities.
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The Executive Director shall engage in the following activities in pursuit of this policy directive,
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either directly or by appropriate delegation of authority:
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A. Ensure the Ground Transportation principles are applied to decisions on ground
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transportation at the appropriate time and manner.
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B. Shall strive to achieve the goals enumerated below.
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C. Provide an Annual Ground Transportation Report to the Commission.
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Port of Seattle Ground Transportation Policy Directive Page 3 of 4
SECTION 5. Policy.
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A. Ground Transportation Principles. The Federal Aviation Administration regulatory
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guidance directs an airport fee and rental structure designed to make the airport as
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self-sustaining as possible. In this context, self-sustaining is generally interpreted as
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applying fair market value commercial rates under the particular airport’s
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circumstances. This reduces the airport’s reliance on federal funds and local tax
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revenues. In developing recommendations to the Commission governing ground
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transportation, Port staff shall, alongside the regulatory guidance, use the following
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guiding principles in managing ground transportation activities at Sea-Tac.
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(1) Reduce passenger and commuter trips and lower carbon emissions to
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achieve Port GHG-reduction goals and reduce negative community impacts.
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(2) Reduce airport drive and roadway congestion, improve ease of access to the
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airport, increase transportation options, and improve the customer
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experience.
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(3) Support equity considerations by promoting living wage jobs, equal business
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opportunities, and accessibility for people with disabilities.
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B. Ground Transportation Goals. Port staff shall apply the principles in Section 5(A) and
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implement strategies to achieve the following ground transportation goals.
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(1) Reduce curbside private vehicle pickup/drop off from 41 percent to 30
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percent of mode share by 2030.
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(2) Reduce Scope 3 GHG emissions from passenger vehicles to 50 percent of
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2007 levels by 2030.
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(3) Maintain a maximum 15-minute travel time from the airport clock tower to
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terminal curb or parking garage.
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C. The Port is committed to airport employee CTR.
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(1) The Commission affirms the Port’s commitment to achieving the drive-alone rate
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goal for Port employees at the Airport established by the CTR program currently
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set by the City of SeaTac at a 65 percent drive-alone rate.
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(2) The Port shall establish a Transportation Management Association (TMA) by
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2020 and make membership available to all employers operating at the Airport.
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The TMA will support commute reduction strategies that go beyond minimum
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CTR requirements and facilitate efficient movement of employees to and from
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Port of Seattle Ground Transportation Policy Directive Page 4 of 4
the Airport. The primary goal of the TMA will be to support the reduction of
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drive-alone rates for employees that work at the Airport.
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(3) The Port shall develop and implement parking management strategies and tools
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to help achieve airport CTR goals, reduce drive-alone rates, and achieve the
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desired mode split.
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SECTION 6. Program Evaluation.
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Port staff shall prepare and deliver to the Commission an Annual Ground Transportation
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Progress Report by June 30th of each year that includes progress and recommendations to
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better achieve the policy outlined in Sections 3 A. B. and C.
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SECTION 7. Fiscal Implications.
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Fiscal implications shall be reviewed by the Executive Director annually, at a minimum, to ensure
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the implementation of the policy directive is adequately resourced and shall submit a budget
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request as appropriate.
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SECTION 8. Research Findings
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A. Ground Transportation Access Study Report 7 – 20 – 18 (Table of Contents and
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Executive Summary – full report available on request)
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B. Ground Transportation Commission Study Session Briefing PowerPoint 7-10-2018
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C. Ground Transportation Commission Briefing PowerPoint 9-25-2018
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