PORT OF SEATTLE
MEMORANDUM 

COMMISSION AGENDA             Item No.  _______6d________ 
Date of Meeting   ___April 21, 2009__ 
DATE:    March 10, 2009 
TO:      Tay Yoshitani, Chief Executive Officer 
FROM:    Michael Ehl, Director, Airport Operations 
Robert Riley, Director, Aviation Capital Improvement Program 
SUBJECT:  Request to advertise for construction bids for the Lora Lake Demolition, Des
Moines Nursery Mitigation and Third Runway Stormwater Pond Projects at
Seattle-Tacoma International Airport (Airport). 
REQUEST:  Request authority for the CEO to advertise and award a construction contract for
the Lora Lake Apartment Demolition, Des Moines Nursery Mitigation and Third
Runway Permanent Stormwater Detention Facilities Projects at Seattle-Tacoma
International Airport. 
SYNOPSIS: 
This authorization will allow construction bids to be obtained for the scope of work under the
overall Third Runway project. Although the runway is operational, certain projects nearby the
runway must be accomplished as required by permits and before the overall project can be
completed and closed out. The Commission had earlier authorized budget for these projects, no
additional monies are being requested within this authorization to advertise and award bid. This
project will not increase the airport's forecasted cost per enplanement. 
BACKGROUND
In September 2006, the Commission fully authorized The Third Runway project which included
the scopes of work of demolition of Lora Lake Apartments, required environmental mitigation of
the Des Moines Nursery and the conversion of the construction stormwater ponds to permanent
stormwater detention facilities. The Third Runway was opened in November 20, 2008 and these
scopes of work are required to be completed after the opening 
PROJECT DESCRIPTION/SCOPE OF WORK 
Project Statement: Complete the demolition of the Lora Lake Apartments, Des Moines
Nursery mitigation and the conversion of the construction stormwater ponds to permanent
stormwater detention facilities as required by the permit conditions associated with the Third
Runway project.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
March 10, 2009 
Page 2 of 4 

Project Objectives: 
Meet the permit conditions required for the Third Runway project. 
Scope of Work: 
This authorization is for the advertisement and award of the following scopes of work: 
Final demolition of the Lora Lake Apartments 
Environmental Mitigation of the Des Moines Nursery 
Conversion of the Construction Stormwater Ponds to permanent stormwater detention
facilities. 

STRATEGIC OBJECTIVES 
This project supports the Port's Strategic Objectives to Ensure Airport Vitality and Be a Catalyst
for Regional Transportation Solutions Strategies 

FINANCIAL IMPLICATIONS 
Budget/Authorization Summary 
Original Budget                              $587,362,000 
Budget additions                              $541,594,000 
Returned Savings                            -$115,000,000 
Revised Budget                           $1,013,956,000 

Previous authorizations                          $1,117,956,000 
$11,000,000 
Authorization transferred with budget transfers, above 
$1,128,956,000 
Net previous authorizations 
$0 
Current request for authorization 
$1,128,956,000 
Total authorizations, including this request 
$0 
Remaining budget to be authorized

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
March 10, 2009 
Page 3 of 4 

PROJECT COST BREAKDOWN 
Construction costs                                          $4,596,000 
Sales tax                                                    $436,620 
Outside professional services                                    $467,680 
Aviation PMG and other soft costs                              $1,011,120 
Total                                                    $6,511,420 

SOURCE OF FUNDS 
This project is included in the 2009-13 capital budget and plan of finance within the Third
Runway program. The funding source will be existing bond proceeds. These estimated costs
will not cause the total projected costs to exceed the revised budget, and will not affect cost per
enplanement (CPE) as these projects were already included in the CPE forecast. 

ECONOMIC IMPACTS 
The Runway project will have generated an estimated 900 jobs over the life of the construction.
The Runway indirectly supports the passenger and cargo airline industry and related businesses
in the region. 

ENVIRONMENTAL SUSTAINABILITY/COMMUNITY BENEFITS 
As a condition of the permits issued for the Runway project, rigorous environmental standards
for the quality of the fill material, construction stormwater treatment and air quality were
established. In addition, the overall project includes the restoration of 119 acres of land in the
Miller Creek and Des Moines Creek basins to pre-developed conditions and construction of 68
acres of wetland habitat in Auburn. This action allows for the completion of the mitigation
required under the permit. Lora Lake Apartment demolition is necessary for completing our
investigation and remediation of the contamination at the site, which will also be
environmentally beneficial. 

TRIPLE BOTTOM LINE SUMMARY 
This action advances the Runway project, which is being developed in an environmentally
responsible way and overall is a vital regional transportation facility that supports economic
growth in many ways.

COMMISSION AGENDA 
Tay Yoshitani, Chief Executive Officer 
March 10, 2009 
Page 4 of 4 

PROJECT SCHEDULE 
Complete Design:     2nd Quarter 2009 
Start Construction:     3rd Quarter 2009 
In-use Date:         4th Quarter 2009 
Project Completion date: 4th Quarter 2010  includes 1 year plant establishment period 

PREVIOUS COMMISSION ACTION 

On August 1, 1996, the Commission adopted Port Resolution No. 3212, as Amended, approving
the Master Plan Update for Airport, including development of a new dependent air carrier
runway, and authorizing initial development work for the Runway project. 
On May 27, 1997, the Commission authorized $587,362,000 for completion of the Runway
project to be completed by 2004. 
On June 22, 1999, the Commission authorized an additional $186,000,000, increasing the total
authorization to $773,362,000. At that time, it was estimated permitting would be finalized by
December 1999 and the Runway project would be complete by fall 2006. 
On June 24, 2003, the Commission was briefed on additional costs from delays, permit
conditions, market conditions, scope of project, and FAA requirements. At that time, the
Runway project was scheduled to be completed at the end of 2008. 
On October 11, 2005, the Commission authorized an additional $125,000,000 increasing the total
authorization to $898,362,000. 
On September 26, 2006, the Commission authorized an additional $219,594,000 increasing the
total authorization to $1,128,956,000.