COMMISSION 
AGENDA MEMORANDUM                        Item No.          8d 
ACTION ITEM                            Date of Meeting        June 8, 2021 

DATE:     May 6, 2021 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Daniel Alter, AVM Fleet Manager, Louis Ekler, AVM Fleet Assistant Manager, Adrian
Down, Environmental Program Manager 
SUBJECT:  CNG Station Maintenance 
Amount of this request:               $1,500,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to execute an agreement
between Port of Seattle and a vendor to provide Compressed Natural Gas (CNG) station
maintenance, repair, and fuel system compressor rebuilds. The Port of Seattle CNG station is
located at 2635 S 194th St SeaTac and is utilized to refuel the rental car and employee parking
Port bus fleets. The contract amount shall not exceed $1,500,000 and seven years. 
EXECUTIVE SUMMARY 
The Aviation Division and Environmental Department are partnered in reducing greenhouse gas
emissions from the Port's vehicle fleet. The Port signed a contract for the purchase of
renewable natural gas (RNG) with USGain in October 2020, which includes providing RNG to
cover the Port's operational needs as well as SEA's CNG bus fleet. As part of these negotiations,
the Port entered into an agreement with Clean Energy to provide CNG fuel and fueling
infrastructure for the Port's CNG bus fleet. The Port CNG station dispensed 301,410 Diesel
Gallon Equivalent (DGE) of CNG in 2020 to power the Port's fleet of CNG buses for both Rental
Car and Employee parking operations. The current maintenance and repair contract will expire
in January 2022. Maintenance and repair on the station is critical because there are limited 
regional CNG stations and these stations cannot sustain busing operations on a continuous
basis. 
JUSTIFICATION 
The Port operates a CNG station to provide fuel for Port bus fleets. This station is located at the
Transportation Operation Center (TOC) to increase operational efficiency. The CNG station has
maintenance and repair completed by an outside vendor and the current contract is set to
expire in January of 2022. 

Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. 8d                                  Page 2 of 4 
Meeting Date: June 8, 2021 

Diversity in Contracting 
We have contacted Diversity and Contracting office and are looking into the feasibility of goals
with the limited number of firms regionally that complete this work. 
DETAILS 
The contract would provide routine maintenance, repair, and compressor rebuilds at the Port
owned and operated CNG station for up to seven years. The estimated cost is approximately
$1,500,000. 
This contract is important to ensure the Port's system is safely maintained and continues to
provide  CNG needed to power the Port's bus fleet.  The maintenance contract includes
detection and elimination of leaks that could contribute to carbon emissions. 
Compressor rebuilds are currently estimated at $225K currently and will not be required for
three to four years depending on quantity of fuel used. 
The Port anticipates higher labor rates that will increase the cost of the contract. 
Schedule 
Activity 
Publish Solicitation                                 2021 Q3 
Complete Solicitation Process                    2021 Q3 
Issue PO                                          2021 Q4 
In-use date                                       2022 Q1 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 

Alternative 1  Execute an agreement between Port and a vendor to provide maintenance and 
repair for the Port's CNG station. This option does not include compressor rebuilds. Compressor
rebuilds would be a separate acquisition. 
Cost Implications: The requested seven-year contract would decrease by $300,000 over seven
years to $1,200,000 due to removing the cost of compressor rebuilds. 
Pros: 
(1)   No gap in CNG station maintenance and repair, which is critical for rental car and
employee parking busing operations. 
(2)   Lower initial contracted amount. 
Cons: 
(1) Increased cost for additional natural gas leaks detection. 

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

COMMISSION AGENDA  Action Item No. 8d                                  Page 3 of 4 
Meeting Date: June 8, 2021 
(2) CNG compressor rebuilds would require a separate procurement through CPO. 
This is not the recommended alternative. 
Alternative 2  Execute an agreement between Port and a vendor and an annual or semi basis 
to provide maintenance and repair for the Port's CNG station. 

Cost Implications:  Increase in maintenance and repair of $35,000/year  from  anticipated 
increase in labor and repair cost. 
Pros: 
(1) No gap in CNG station maintenance and repair, which is critical for rental car and
employee parking busing operations. 
(2) Annual cost increase would be better known. 
Cons: 
(1) Labor time issuing contract would be increased. 
(2) No long-term certainty about cost for budget projections. 
(3) Short term contract could reduce ability to negotiate. 
(4) CNG compressor rebuilds would require a separate procurement through CPO. 
This is not the recommended alternative. 
Alternative 3  Execute an agreement between Port and a vendor to provide maintenance,
repair, compressor rebuilds, and increased leak detection for the Port's (CNG) station. 
Cost Implications:  Increase in maintenance and repair of $35,000/year from anticipated
increase in labor and repair cost. 
Pros: 
(1) No gap in CNG station maintenance and repair, which is critical for Rental car and
Employee parking busing operations. 
(2) Long term predictability in the price of the contract. 
Cons: 
(1) Long term contract could reduce flexibility. 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
Cost for maintenance and repair is projected to increase by $35,000/year due higher cost from 
labor, repair, and monitoring. Compressor rebuilds are estimated at $225,000 currently but will
not be needed for three to four years. The cost of the contract and compressor rebuilds are 
budgeted annually through expense funds. 

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

COMMISSION AGENDA  Action Item No. 8d                                  Page 4 of 4 
Meeting Date: June 8, 2021 
Authorization Summary                           Capital        Expense           Total 
AUTHORIZATION 
Previous authorizations                                   $0               $0               $0 
Current request for authorization                         $0      $1,500,000      $1,500,000 
Total authorizations, including this request                $0      $1,500,000      $1,500,000 
Remaining amount to be authorized                    $0             $0             $0 
Annual Budget Status and Source of Funds 
Funds for the maintenance and repair are come are expensed from the Customer Facility
Charge (CFC) that collects funding through rental cars and employee parking fees. 
ATTACHMENTS TO THIS REQUEST 
None 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
None 











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