COMMISSION 
AGENDA MEMORANDUM                        Item No.          6a 
ACTION ITEM                            Date of Meeting       April 25, 2017 
DATE:     April 3, 2017 
TO:        Dave Soike, Interim Chief Executive Officer 
FROM:    James R. Schone, Director, Aviation Commercial Management 
James Jennings, Senior Manager, Aviation Properties 
W. Allan Royal, Property Manager, Aviation Properties 
SUBJECT:  Second Reading and Final Passage of Resolution 3731 to surplus Tract A in the Des
Moines Creek Business Park 
ACTION REQUESTED 
Request Second Reading and Final Passage of Resolution 3731:  A Resolution of the Port
Commission of the Port of Seattle declaring surplus and no longer needed for port district
purposes approximately 4.56 acres of Port-owned real property, commonly referred to as Tract
"A," and located in the City of Des Moines, King County; and further authorizing the transfer of
said  real  property  to  the  City  of  Des  Moines  for  stormwater  facilities  in  support  of
improvements at Des Moines Creek Business Park. 
EXECUTIVE SUMMARY 
This action will allow the Port to transfer ownership and management of the storm water
facilities, Tract "A," associated with the 87-acre Des Moines Creek Business Park as previously
agreed to in the Master Plan Agreement between the Port and the City. 
The Port and City have entered into multiple agreements related to the development of the
three phases of the 87-acre Des Moines Creek Business Park.  Phase 1 has approximately
500,000 square feet of industrial buildings and is open.   Phase 2, Federal Aviation
Administration Headquarters with 281,000 square feet of class A office space is under
construction, and Phase 3, approximately 500,000 square feet of industrial buildings is under
construction.
The Port and City entered into a Master Plan Agreement that memorialized a plethora of issues,
such as street dedications, traffic mitigation, design criteria and environmental mitigation,
necessary to ensure a successful development. As part of the Master Plan Agreement, which
enabled the development of the business park, several items were agreed to that were
operationally required for the development of the property. They included: 
Dedication of property to widen 216th and 24th. 
Dedication of 211th, 214, S. 208th and S. 20th which are internal streets servicing the
entire business park. 
Dedication of Tract "A", the storm water facility. 

Template revised September 22, 2016.

COMMISSION AGENDA  Action Item No. __6a__                              Page 2 of 3 
Meeting Date: April 25, 2017 
JUSTIFICATION 
All of the other elements in the Master Plan Agreement have been successfully completed. The
last issue is to convey to the City the storm water treatment and detention facility. The storm
water facility is located on Tract "A."  The storm water facility will be owned, operated, and
maintained by the City thus the need to convey the property to the City.
Scope of Work 
The scope of work is to sign all documents necessary for the conveyance of the property to the
City. 
Schedule 
Port staff expects to close the transaction in the second quarter of 2017. 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternatives are not practically viable because of the existing Master Plan Agreement in place
between the City and the Port that was agreed to in order to develop the Des Moines Creek
Business Park.
Alternative 1)  The Port can refuse to convey the property.
Cost Implications: Estimated $20,000 per year for operating and maintenance. 
Pros: 
(1) This would keep ownership of the land with the Port. 
Cons: 
(1) The Port would, mostly likely, be required to operate and maintain the storm water
facility.    The  cost  estimate  is  based  upon  the  "Puget  Sound  Storm  Water  Best
Management Practices Cost Database." 
(2) The action would not honor the Master Plan Agreement with the City. 
This is not the recommended alternative. 
Alternative 2)  Convey the property to the City. 
Cost Implications: None 
Pros: 
(1) This alternative would honor the Master Plan Agreement made with the City. 
(2) The action will fulfill the last key requirement for the Des Moines Creek Business
Park development. 
(3) It would relieve the Port of any potential responsibility for maintaining the storm
water facility and pond. 

This version as revised 9/16/2016

COMMISSION AGENDA  Action Item No. __6a__                              Page 3 of 3 
Meeting Date: April 25, 2017 
Cons: 
(1) The Port would no longer own the property.
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
The Port will not receive payment for the property; the dedication was a component of the
Master Plan Agreement for the development of the Des Moines Creek Business Park. 
ATTACHMENTS TO THIS REQUEST 
1)  Draft Resolution No. 3731 
2)  Presentation slide 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
April 11, 2017  Commission had First Reading and Public Hearing of Resolution 3731 












This version as revised 9/16/2016