COMMISSION 
AGENDA MEMORANDUM                        Item No.          8k 
ACTION ITEM                            Date of Meeting     November 8, 2022 

DATE:     October 10, 2022 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Stephanie Jones Stebbins, Managing Director, Maritime 
Delmas Whittaker, Director Marine Maintenance 
Shannon Zink, Marine Maintenance Sr. Manager, Fleet and Facilities 
Levi Clark, Marine Maintenance, Manager, Fleet and Transportation 
SUBJECT:  Marine Maintenance Street Sweeper Replacement 
Amount of this request:                 $375,000 
Total requested project cost:            $375,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to authorize the purchase of one
industrial street sweeper truck, to replace an existing and obsolete street sweeper truck located
at Marine Maintenance.
EXECUTIVE SUMMARY 
This project will replace an existing asset that is thirteen years old and at the end of its useful
mechanical life.  This new asset will be used jointly by Marine Maintenance and the Storm
Water Utility to clean around storm water drain infrastructure to minimize solids and sediment 
entering Port storm infrastructure, perform regular cleaning of Port owned properties, and
clean up after MM or SWU led construction functions. The current equipment has become
mechanically unreliable and is obsolete.  The expected useful mechanical lifecycle of this new
asset is 12 years. This project aligns with the Port Sustainable Fleet Plan by utilizing renewable
and low carbon fuel (R99), it will have a fuel-saving single engine design (outgoing asset is dual
engine), and the latest exhaust aftertreatment technology.
JUSTIFICATION 
This project gives Marine Maintenance and the Storm Water Utility access to a reliable street
sweeper truck granting the ability to quickly clean around stormwater and combined system 
drain infrastructure. This new asset will increase our regulatory compliance to perform regular
property maintenance by cleaning up debris, sediment, and other materials before they reach

Template revised January 10, 2019.

             COMMISSION AGENDA – Action Item No. _8k_                                Page 2 of 5 
Meeting Date: November 8, 2022 
our waterways from our Maritime properties. Additionally, this equipment allows Marine
Maintenance and SWU to clean up debris left over from construction functions. 
This project will increase the capacity of Port staff to meet the Long-Range Plan Century Agenda
Goal 4, Objective 10 - “to meet or exceed agency requirements for stormwater leaving portowned
or operated facilities.” Another key metric listed in the Stormwater Utility 5-year
strategic plan, Category 1, Goal 2, Strategy #5, is to expand use of Best Management Practices 
(BMP) across all Maritime properties. Additionally, Marine Maintenance crafts will have access
to a machine that will allow them to clean up construction sites quickly to reduce potential
pollution generated from entering the Municipal Separate Stormwater System (MS4). 
Diversity in Contracting 
Diversity in Contracting has reviewed and found that a WMBE Goal is not feasible on an
equipment purchase such as this. 
DETAILS 
Port staff has dedicated labor to clean, assess, and repair stormwater and combined sewer
infrastructure including 2,875 catch basins. This equipment is the only means to recover the
debris  associated  with  this  required  regulatory  maintenance,  prior  to  it  entering  our
stormwater system. 
The Port currently owns two street sweeper trucks that support the Stormwater Pollution
Prevention Plan (SWPPP), Marine Maintenance construction functions, and emergency work.
One street sweeper truck is fully utilized by the Storm Water Utility and therefore not available
for any other work in question.   This project will replace the second truck at Marine
Maintenance that is shared between Marine Maintenance led repair projects and the Storm
Water Utility crew to supplement their peak seasonal work. This second unit is showing signs
of mechanical failure and is past its useful life cycle. 
This equipment will run on renewable diesel (R99), utilize the latest exhaust aftertreatment
technology, and will have a single engine design to comply with the Port’s Sustainable Fleet
Plan guidelines. This project also aligns the port to meet Century Agenda goals related to
emissions standards while minimizing total cost of ownership. 
Scope of Work 
The scope of work for the project is to develop vehicle and equipment specifications that meet
the project requirements and procure the equipment in a timely fashion.  This type  of
equipment is  currently available on Washington State  Department of Enterprise Services 
Contracts, as well as Sourcewell National Cooperative Contracts, therefore there may be
opportunity to reduce acquisition time. 

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

             COMMISSION AGENDA – Action Item No. _8k_                                Page 3 of 5 
Meeting Date: November 8, 2022 
Schedule 
Complete acquisition and receive operational system as soon as possible. The market for this
type of equipment is volatile due to supply chain constraints, so delivery times vary. 

Cost Breakdown                                     This Request           Total Project 
Purchase                                                $375,000              $375,000 
Total                                                           $375,000                $375,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1 – Rent industrial street sweeper truck on an annual basis in lieu of replacement. 
Cost Implications:   Street Sweeper  trucks can be rented through the Washington State
Department of Enterprise services contract at a rate of $127,200 per year, or $1,526,400 over
the 12-year life cycle of the proposed asset.  That rate is expected to increase 3-5% per year
over the 12-year period we would operate the truck. Additionally, it costs $7,000 per year to
fuel a sweeper. The total cost to operate a rent ed street sweeper over the 12-year period is
estimated to be $1,610,400 at net present value. 
Pros: 
(1)   Maintenance costs are included in the annual rental fees. 
(2)   Costs can be allocated directly to maintenance or capital projects. 
Cons: 
(1)   Highest cost alternative. 
(2)   Equipment offered for rent may not be most fuel-efficient option. 
(3)   Street Sweeper trucks are in high demand in the rental market and there is no
guarantee that the Port could secure a long-term rental. 
This is not the recommended alternative. 
Alternative 2 – Purchase a new industrial street sweeper as a replacement to the existing unit
that is obsolete technology and has reached the end of its mechanical life.
Cost Implications: The estimated cost of purchasing a new industrial catch basin cleaner, prep
work to get it ready for service, and licensing is just under $375,000. The annual Fuel and
Maintenance costs for a catch basin cleaner are $26,700. Estimated total cost of owne rship is
$695,400 over the 12-year life cycle, at net present value. 
Pros: 
(1)   This asset would be built to Port specifications to meet Port specific projects and usecase.

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

             COMMISSION AGENDA – Action Item No. _8k_                                Page 4 of 5 
Meeting Date: November 8, 2022 
(2)   This asset would be specified and designed to meet our Sustainable Fleet Plan and
Century Agenda goals related to emissions reduction standards and minimizing cost of
ownership. 
(3)   This asset would assist Port crews in upholding their Stormwater pollution prevention
plan (SWPPP) requirements. 
(4)   This alternative provides an asset that is available and ready for use to address
planned or emergent work. 
(5)   This alternative is the lowest cost alternative when valued over the 12-year lifecycle of
the equipment. 
Cons: 
(1)   High initial capital cost. 
(2)   Maintenance and fuel costs expected to be approximately $26,700 per year with NPV
of $320,400 (figured into the total cost of ownership). 
(3)   This alternative requires the Port to take responsibility for maintaining the asset,
which is not required in the other alternatives 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary              Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                   $375,000               $0        $375,000 
AUTHORIZATION 
Previous authorizations                                    0                0                0 
Current request for authorization                  $375,000                0        $375,000 
Total authorizations, including this request         $375,000                0        $375,000 
Remaining amount to be authorized                    $0             $0             $0 
Annual Budget Status and Source of Funds 
This purchase was included in the approved 2022 Capital Plan under C801251 Commercial
Sweeper with a total cost of $325,000. The updated cost estimate has been reflected in the
draft 2023 Capital plan. 
This purchase will be funded by the General Fund. 
Financial Analysis and Summary 
Project cost for analysis              $375,000 
Business Unit (BU)                  Marine Maintenance 
Effect on business performance     This project will increase depreciation expense by
(NOI after depreciation)             $37,500 per year with a 10-year depreciation schedule. 

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

             COMMISSION AGENDA – Action Item No. _8k_                                Page 5 of 5 
Meeting Date: November 8, 2022 
IRR/NPV (if relevant)                NA 
CPE Impact                       NA 

ADDITIONAL BACKGROUND 
On November 24, 2014, the Port adopted Resolution No. 3696 allowing the Port to establish a
Port Stormwater Utility and adopting a Stormwater Utility charter. Services and obligations in
the Port of Seattle Stormwater Utility Charter reads “The Utility shall provide services, facilities,
systems, and programs for surface water and Stormwater management and pollution control to
customers within the service area as set forth in this Charter 
ATTACHMENTS TO THIS REQUEST 
None 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
None 











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