PORT OF SEATTLE 
MEMORANDUM 
COMMISSION AGENDA               Item No.       5c 
ACTION ITEM             Date of Meeting    May 28, 2013 

DATE:    May 20, 2013 
TO:      Tay Yoshitani, Chief Executive Officer 
FROM:   Wayne Grotheer, Director, Aviation Project Management Group 
David Soike, Director, Aviation Facilities and Capital Programs 
SUBJECT:  Grease Interceptor Augmentation 2013 (CIP #C800551) and North Satellite Renovation
(NSAT) (CIP #C800556) at Seattle-Tacoma International Airport (Airport) 
Amount of This Request: $544,000       Source of Funds: Airport Development Fund 
Est. State and Local Taxes: N/A         Est. Jobs Created: 5 
Est. Total Project Cost: $ 2,498,600 
ACTION REQUESTED: 
Request Commission authorization for the Chief Executive Officer to (1) authorize design for the Grease
Interceptor Augmentation 2013 Project at Concourse C and the South Satellite at the Seattle-Tacoma
International Airport (CIP #C800551) in the amount of $328,500; (2) authorize design for the grease
interceptor in the North Satellite (NSAT) Renovation project (CIP #C800556) in the amount of
$215,500; and (3) authorize a scope and associated budget transfer of $939,400 from CIP #C800551 to
CIP #800556 to facilitate construction. 
SYNOPSIS: 
This request is to authorize design of three underground 9,000-gallon grease interceptors to serve the
North Satellite, Concourse C and South Satellite, supplementing the Airport-wide system of grease
interceptors. These new grease interceptors will collect grease waste from existing and planned
food/beverage units not currently served, significantly reducing the risk of clogged sewer lines in the
project areas. These new interceptors will also bring the Airport into compliance with the national
plumbing code and the Midway Sewer District for release of grease water waste. 
The original Grease Interceptor Augmentation 2013 Project (CIP #C800551), which was included in the
2013  2017 capital budget and plan of finance, included three interceptors. To better facilitate the final
design of the food service facilities as coordinated with the development of the NSAT project, staff
requests authorization to transfer the design authorization for one interceptor to the NSAT project. This
transfer will allow efficient construction bid packaging to coincide with other work on site, thereby
aiding construction efficiency while avoiding delays.
This is a non-aeronautical project the cost of which will not be allocated to the airlines in the airline rate
base.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
May 20, 2013 
Page 2 of 5 
BACKGROUND: 
Grease interceptors are underground holding tanks that remove grease from waste water before the water
is discharged into the sanitary sewer system. Greasy water moves from food service units through
drains via gravity. F or waste water to drain to a grease interceptor, a continual downhill slope must be
maintained. Grease interceptors must be placed in appropriate locations for food service units to have
the proper unobstructed slope required for drainage. Lack of grease interceptors increases the risk of
sewer line clogs that could significantly impact tenants and Airport operations. 
In the early 2000s, the Airport began a comprehensive program to install grease interceptors at various
locations around the Airport to serve the existing and future food service concessions. Due to budgetary
constraints, the program was only partially completed. Since that time, the Airport has installed new
food service units not served by grease interceptors. This project will connect the un-served existing as
well as future food service units to grease interceptors sized to handle existing and future growth. 
PROJECT JUSTIFICATION: 
The expansion of food service units at the Airport has resulted in a lack of grease interceptor coverage in
certain areas, leaving the Airport at risk for interruptions to tenant and Airport operations from sewer
line clogs, as well as the resultant maintenance costs. Further, the current arrangements of unserved
units results in the Port being non-compliant with the national Uniform Plumbing Code and the Midway
Sewer District, which the Airport utilizes, for release of grease water waste. These conditions coupled
with plans for future food/beverage units in areas not serviced by existing interceptors requires that the
Port install the proposed grease interceptors. The 9,000-gallon grease interceptors will have capacity for
current and future nearby uses. The units will be placed underground to avoid impact on aircraft
operations. 
The transfer of the North Satellite grease interceptor to the NSAT project will facilitate proper
placement consistent with design efforts currently underway for the North Satellite. 
Project Objectives: 
Provide for the hook-up to accessible grease interceptors for unserved existing as well as future 
food/beverage locations at the Airport. 
Reduce the risk of sewer line clogs from grease water waste released into the sewer lines, 
causing disruption to tenants and Airport operations as well as increased maintenance costs. 
Make the Airport compliant with grease water waste discharge requirements for the national
Uniform Plumbing Code and the Midway Sewer District.
PROJECT SCOPE OF WORK AND SCHEDULE: 
Scope of Work: 
The projects will install three underground 9,000-gallon grease interceptors to serve unserved areas at
the North Satellite, Concourse C and South Satellite, supplementing the Airport-wide system of grease
interceptors.
Grease Interceptor Augmentation Schedule: 
Request Commission Authorization for Design                     May 2013 
Request Commission Authorization to Advertise for Bids and Construct  December 2013

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
May 20, 2013 
Page 3 of 5 
Construction Start                                           July 2014 
Project Complete                                      October 2014 
FINANCIAL IMPLICATIONS: 
Budget / Authorization Summary: 
C800551        C800556 
Grease Interceptor     North Satellite 
CAPITAL COSTS 
Original Budget                         $ 2,000,000     $ 147,800,000 
Prior Adjustments to Budget                 $ 498,600    $ 57,806,957 
Current Budget                         $ 2,498,600     $ 205,606,957 
Budget Transfer                        $ (939,400)     $ 939,400 
Revised Budget                       $ 1,559,200    $ 206,546,357 
Previous Authorizations                    $ 25,000     $ 32,718,056 
Current Request for Authorization             $ 328,500    $ 215,500 
Total Authorized (including this request)       $ 353,500     $ 32,933,556 
Total Estimated Project Costs                 $ 1,559,200     $ 206,546,357 
Remaining to be Authorized                 $ 1,205,700    $ 173,612,801 
EXPENSE 
Current Budget                                $0     $ 5,100,000 
Revised Budget                              $0     $ 5,100,000 
Previous Authorizations                            $0     $ 200,000 
Current Request for Authorization                     $0              $0 
Total Authorized (incl this request)                   $0     $ 200,000 
Total Estimated Project Costs                         $0     $ 5,100,000 
Remaining to be Authorized                        $0     $ 4,900,000 
Project Cost Breakdown: C800551             This Request       Total Project 
Construction                                   $0          $928,910 
Construction Management                        $0         $108,500 
Design                                  $254,500         $254,500 
Project Management                        $ 74,000        $159,010
Permitting                                     $0          $ 15,000 
State & Local Taxes (estimated)                       $0          $ 93,280 
Total                                     $328,500         $1,559,200

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
May 20, 2013 
Page 4 of 5 
Project Cost Breakdown: C800556             This Request       Total Project 
Construction                                   $0       $136,831,608 
Construction Management                        $0      $ 18,259,000 
Design                                  $151,500      $ 18,889,000 
Project Management                        $ 64,000      $ 16,242,509 
Permitting                                     $0       $ 3,387,000 
State & Local Taxes (estimated)                       $0       $ 12,937,240 
Total                                     $215,500       $206,546,357 
Budget Status and Source of Funds: 
The project cost included in the 2013-2017 capital budget totaled $2,000,000. Upon completion of the
project notebook, the project budget was increased to $2,498,600 because the original budget estimate
was based on placing the interceptors above ground. Placing the interceptors above ground makes the
interceptors susceptible to damage from traffic. The budget increase was offset by a transfer from the
Non-aeronautical Allowance CIP (C800405) resulting in no net change to the 2013  2017 capital
budget. As listed above, $939,400 will be transferred from C800551 Grease Interceptor to NSAT 
(C800556) to facilitate proper placement consistent with design efforts currently underway for the North
Satellite. The funding source for the Grease Interceptor project will be the Airport Development Fund. 
Financial Analysis and Summary: 
CIP Category             Compliance 
Project Type              Terminal Infrastructure 
Risk adjusted discount rate     N/A 
Key risk factors             N/A 
Project cost for analysis        $2,498,600 
Business Unit (BU)          Terminal  Non-aeronautical 
Effect on business performance  NOI after depreciation will decrease 
IRR/NPV             N/A 
CPE Impact             None. 
Lifecycle Cost and Savings: 
There will be annual operating and maintenance costs increases of approximately $7,500 to regularly
pump the new interceptors out. However, these costs will be offset by the reduction of sewer district
surcharges currently being assessed. Further, the new interceptors will significantly reduce the risk of
emergency expenses for cleaning sewer line clogs. 
STRATEGIC OBJECTIVES: 
This project contributes to the Port's Century Agenda goal of meeting the region's air transportation 
needs at the Airport for the next 25 years. The project increases the capacity and flexibility of tenant
spaces. Allowing for additional food/beverage locations throughout the Airport will better serve
passengers and enhance customer service. The project demonstrates the Port's commitment to being a
good environmental steward for our partner the Midway Sewer District by removing grease before waste
water leaves the Airport.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
May 20, 2013 
Page 5 of 5 
ENVIRONMENTAL SUSTAINABILITY: 
This project demonstrates environmental sustainability by improving existing Port assets and looking at
the total cost of ownership. The project aligns with the Port's goal of improving the long-term
sustainability of its facilities and operations.
BUSINESS PLAN OBJECTIVES: 
This project supports the Airport's strategic goal of operating a world-class international airport by
anticipating and meeting the needs of our tenants, and passengers; and managing our assets to minimize
long-term total cost of ownership. Installing grease interceptors will protect the Port's sanitary sewer
lines from the harmful effects of grease, anticipate future tenant need, and decrease surcharge fees. 
TRIPLE BOTTOM LINE SUMMARY: 
This project will promote environmental sustainability through collecting grease water waste at food
service concessions units. The project supports environment initiatives by eliminating grease discharge
into the Midway sewer system. The project supports the expansion of concessions revenues at the
Airport by providing infrastructure to support the Concessions Program. This project will create shortterm
construction jobs. Small business opportunities will be reviewed by the Office of Social
Responsibility in accordance with established procedures. 
ALTERNATIVES CONSIDERED AND THEIR IMPLICATIONS: 
Alternative 1: Install individual grease traps in food preparation area drain lines. Grease traps capture a
small amount of the grease that passes through them. Significant time and expense for frequent cleaning
is required to ensure that the traps are free from clogs and work effectively. This is not the
recommended alternative. 
Alternative 2: Do nothing. The result of doing nothing would be grease build up in sewers leading to
blockages and increasing maintenance costs and increased surcharges by the local sewer district. This is
not the recommended alternative. 
Alternative 3: Install grease interceptors at the three locations where there are food service units not
connected to grease interceptors to fully serve the current and anticipated concessions footprint at the
following locations: This is the recommended alternative. 
1.  South Satellite 
2.  North Satellite 
3.  Concourse C near gate C-1 
OTHER DOCUMENTS ASSOCIATED WITH THIS REQUEST: 
None. 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS: 
None.