COMMISSION 
AGENDA MEMORANDUM                        Item No.          8b 
ACTION ITEM                            Date of Meeting      October 8, 2019 
DATE:     September 30, 2019 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Jeffrey Brown, Director, Aviation Facility and Capital Program 
Wayne Grotheer, Director, Aviation Project Management 
SUBJECT:  Airport Terminal Solid Waste Improvements Project (CIP #C800945) 
Amount of this request:               $1,225,000 
Total estimated project cost:           $6,400,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to (1) prepare design and
construction bid documents for the Terminal Solid Waste Improvements project at Seattle-
Tacoma International Airport; (2) execute a long-term contract for standardized solid waste
compactors through a competitive process for a period of up to 10 years; and (3) use Port crews
for preconstruction activities. The amount of this request is $1,225,000 for a total estimated
project cost not to exceed $6,400,000.
EXECUTIVE SUMMARY 
The purpose of this project is to expand capacity and improve sanitary conditions of the
Airport's terminal solid waste (garbage, recycling, and compost) infrastructure. Significant
passenger growth in the past eight years has resulted in a 45 percent increase to the Terminal's
solid waste volumes and requires the current solid waste systems to operate at or near
maximum capacity with the occasional overages at peak times. The project supports the
Airport's Environmental Strategy Action Plan goal to divert 60 percent of waste from landfills by
ensuring enough throughput capacity is available for future recycling and composting volumes.
The project supports solid waste redundancy through providing additional solid waste assets
enabling operations to continue in peak times and inclement weather. The project further
addresses sanitation concerns identified during the 2018 and 2019 site visits by the Food and
Drug Administration.
Solid waste throughput and capacity are essential for Airport operations, passenger comfort,
worker safety, pest control and overall sanitation. This project ensures operational integrity of
the terminal solid waste operations through: (1) expansion of ramp level dedicated refuse
collection and processing space; (2) addition of six sanitation and cart wash stations throughout
the airport; (3) purchase of nine new high-capacity compactors and; (4) the standardization of
compaction equipment through a competitively bid 10-year term contract.

Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. __8b__                              Page 2 of 6 
Meeting Date: October 8, 2019 
JUSTIFICATION 
This action satisfies the business plan to operate a world-class international airport by ensuring
adequate solid waste infrastructure is in place to meet operational, passenger comfort, pest
control and worker safety needs. Solid waste generation is directly proportional to the number
of passengers utilizing the Airport and the Airport's Dining and Retail services. From 2010 to
2018, terminal solid waste generation grew 45 percent from 5,500 to 8,000 tons annually and is
forecast to continue to increase in the future; garbage volumes grew 20 percent increasing by
850 tons annually, recycling volumes grew 92 percent increasing by 752 tons annually, and
composting volume grew 411 percent increasing by 797 tons annually, other diverted waste
volumes grew 59 percent or 164 tons annually. 
The Central Terminal core solid waste refuse collection and processing areas were constructed
in 2003 and provided dedicated garbage and recycling spaces only or enough space for large
scale two-stream operations. Composting operations began in 2006 and are handled by
movable bins. The current facilities are at capacity, require attention due to long-deferred
maintenance, and require additional space and infrastructure to meet future demands while
remaining compliant with federal code and sanitation guidelines. 
This project directly supports the Port's Century Agenda goal to be the greenest and most
energy efficient Port in North America by expanding compost and recycling capacity, which 
enables the airport to meet its solid waste diversion goals. Diverting waste from the Cedar Hills
Regional landfill reduces greenhouse gas emissions and reduces airport costs to dispose of solid
waste.  Expanding solid waste capacity through system changes and expanded capacity
containers reduces the total number of vehicle trips required from the Airport to Solid Waste
processing facilities which reduces vehicular traffic and the Port's overall carbon footprint. 
Diversity in Contracting 
Project staff is working with the Diversity in Contracting department to inform Woman and
Minority Business Enterprises (WMBE) of this opportunity, and in the establishment of the
WMBE aspirational goal for the construction contract.
DETAILS 
Solid Waste throughput and capacity are essential for Airport operations, passenger comfort,
worker safety, pest control and overall sanitation. The successful completion of this project will: 
Accommodate future passenger growth and the subsequent larger volume of solid
waste generated. The project is informed by the Airport's 2016 Solid Waste
Management Plan and Forecast and Capacity Study.
Align solid waste management with Century Agenda Goal Number 4 to be the
greenest and most energy efficient Port in North America and directly supports the
Airport's goal to divert 60 percent of terminal solid waste from landfills.

Template revised June 27, 2019 (Diversity in Contracting).

COMMISSION AGENDA  Action Item No. __8b__                              Page 3 of 6 
Meeting Date: October 8, 2019 
Address sanitation and federal regulatory requirements identified during the 2018
and 2019 Food and Drug Administration site inspections.
Improve  worker  safety  through  smart  design  to  improve  sanitation  and
maintainability of the refuse collection areas.
Improve pricing and standardization of Solid Waste compactor assets through a
long-term competed contract. Ensures interchangeability of assets for continuity of
operations during scheduled and unscheduled maintenance.

Scope of Work 
The main scope items include: 
Expand existing Central Terminal solid waste collection rooms by constructing two
ramp level solid waste  collection and processing spaces adjacent to the Central
Terminal. 
Install six sanitation and cart wash stations at solid waste collection rooms throughout
the airport. 
Purchase nine compactors. 
Execute a long-term  contract to establish standards for compaction  equipment
through a competitively bid 10-year term contract.
Schedule 
Activity 
Design start                                       2019 Quarter 4 
Commission construction authorization          2020 Quarter 4 
Construction start                                2021 Quarter 2 
In-use date                                       2021 Quarter 4 
Cost Breakdown                                      This Request           Total Project 
Design                                                  $1,225,000             $1,400,000 
Construction                                                     $0             $5,000,000 
Total                                                          $1,225,000              $6,400,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1  Do not authorize design of the project. 
Cost Implications: Expense for preliminary work $175,000 
Pros: 
(1)   No additional funding needed for the project 

Template revised June 27, 2019 (Diversity in Contracting).

COMMISSION AGENDA  Action Item No. __8b__                              Page 4 of 6 
Meeting Date: October 8, 2019 
Cons: 
(1)   Does not meet current solid waste code requirements 
(2)   Increases the potential of garbage/trash overflow conditions, increased rodent issues,
unsafe worker conditions, and possible code findings and violations 
(3)   Requires  additional  solid  waste  removal  services  and  tipping  fees  to  mitigate
compactor breakdowns and haul times 
This is not the recommended alternative. 
Alternative 2  This alternative adds approximately 1,600 square feet of additional ramp level
space adjacent to the Central Terminal (CT); provides for 3 compactors (trash, recycling, and
compost) at both CT North and South waste collection rooms; adds a trash compactor to the
Service Tunnel loading dock; and adds Sanitation Stations to CT North and South, Concourses A
and D, the Service Tunnel, and South Satellite. 
Cost Implications: Capital Cost: $5,500,000 
Pros: 
(1)   Provides capacity to meet projected average daily volumes 
(2)   Improves Airport refuse area sanitation conditions 
Cons: 
(1)   Additional annual Operations and Maintenance contracts and labor expense costs to
mitigate unforeseen breakdowns and compactor unavailability periods 
(2)   Loss of operational ramp space for parking and airline overflow space 
(3)   Lost revenue for dumpster usage verses compactor usage 
This is not the recommended alternative. 
Alternative 3  This alternative adds approximately 2,400 square feet of additional ramp level
space; provides for four compactors (trash, recycling, and compost) at both CT North and South 
waste collection rooms; adds a trash compactor to the Service Tunnel; and adds sanitation
stations to CT North and South, Concourses A and D, the Service Tunnel and South Satellite and
establishes a 10-year contract for the purchase of standardized compactors.
Cost Implications: $6,400,000 
Pros: 
(1)   Meets all project objectives 
(2)   Provides capacity to meet projected long-term waste volumes 
(3)   Provides  overflow  capacity/flexibility  to  mitigate  increased  peak  volume,  missed
pickups, daily haul downtime and equipment breakdowns 
(4)   Supports emergency preparedness and improves safety when haulers cannot access
the airfield due to winter or low visibility conditions 
(5)   Improves Airport refuse area sanitation conditions 
Cons: 
(1)   Future gating flexibility of Gate C2 

Template revised June 27, 2019 (Diversity in Contracting).

COMMISSION AGENDA  Action Item No. __8b__                              Page 5 of 6 
Meeting Date: October 8, 2019 
(2)   Loss of Operational ramp space for parking and airline overflow maintenance space 
(3)   Requires relocating Airport Dining and Retail Tenant refrigeration equipment 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary               Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                 $1,876,000                0      $1,876,000 
Estimate Increases                               $4,324,000        $200,000      $4,524,000 
Revised Estimate                                $6,200,000       $200,000      $6,400,000 
AUTHORIZATION 
Previous authorizations                            $175,000               $0        $175,000 
Current request for authorization                $1,175,000         $50,000      $1,225,000 
Total authorizations, including this request       $1,350,000         $50,000      $1,400,000 
Remaining amount to be authorized            $4,850,000       $150,000     $5,000,000 
Annual Budget Status and Source of Funds 
The project CIP C800945 was included in the 2019-2023 plan of Finance, in the amount of
$1,876,000. The total budget was increased by $4,524,000 to address  solid waste and
sanitation shortfalls. The Capital estimate increase of $4,324,000 includes additional solid waste
capacity for the North Central Terminal, the expanded Central Terminal refuse area footprint
and the addition of 6 sanitation stations. The current project estimate is $6,200,000 of capital
and $200,000 of expense for a total project estimate of $6,400,000. The capital budget increase
will be transferred from the Aeronautical Reserve CIP (C800753), resulting in no net change to
the airport capital budget. The $200,000 of expense is to cover required tenant equipment
relocation. The funding source will be the airport development fund and future revenue bonds. 
Financial Analysis and Summary 
Project cost for analysis              $6,200,000 
Business Unit (BU)                  Terminal Building 
Effect on business performance     NOI after depreciation will increase 
(NOI after depreciation) 
IRR/NPV (if relevant) 
CPE Impact                        $0.03 in 2023 
Future Revenues and Expenses (Total cost of ownership) 
The recommended solution is expected to yield a 10-year cost avoidance of $9,600,000 to the
solid waste program with a project payback of less than eight years. Cost avoidance is based on 

Template revised June 27, 2019 (Diversity in Contracting).

COMMISSION AGENDA  Action Item No. __8b__                              Page 6 of 6 
Meeting Date: October 8, 2019 
reduced tipping fees and costs to mitigate waste overages. Additional compactor equipment
operations and maintenance costs will be $45,000 annually. 
ATTACHMENTS TO THIS REQUEST 
(1)   Presentation slides 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
None 















Template revised June 27, 2019 (Diversity in Contracting).