COMMISSION 
AGENDA MEMORANDUM                        Item No.          6d 
ACTION ITEM                            Date of Meeting     December 10, 2019 
DATE:     December 2, 2019 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Jeffrey Brown, Director Aviation Facilities and Capital Programs 
Wayne Grotheer, Director, Aviation Project Management 
SUBJECT:  Fire Pump Replacement (CIP #C800794)  Project Approval 
Amount of this request:               $4,840,000 
Total estimated project cost:           $5,000,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to (1) develop, advertise, and
execute a Public Works Building Engineering Systems Contract and (2) authorize the use of port
crews for preliminary work in support of the Fire Pump Replacement Project at Seattle-Tacoma
International Airport. The amount of this request is $4,840,000 for a total estimated project
cost not to exceed $5,000,000. 
EXECUTIVE SUMMARY 
This project will replace four, 50-year-old emergency fire pumps, which are beyond their useful
life.  In addition to replacement of the fire pumps and integral diesel engine units, this project
will improve and streamline the ability to maintain and certify the system by installing isolation
valves and an inline flow meter. Due to the age of these fire pumps, replacement parts are
difficult  to  source  making  routine  maintenance  and  annual  performance  certification
increasingly problematic. 
The current estimated cost of $5,000,000 is significantly above the $580,000 included in the
2020-2024 capital budget and plan of finance. The original status 2 estimate was a rough order
of magnitude and only covered the cost of two pumps with a simple installation. The scope has
since been modified to include additional pumps, isolation valves, and metering, requiring a
more complex installation. The new estimate also includes necessary soft-costs and escalation
since 2015. 
JUSTIFICATION 
In the event of a large fire in the terminal, hangars, or fuel farm, the emergency fire pump
system will engage to supply the water needed to fight the fire. Currently, three of the four
pumps to be replaced are having performance problems, in that they only narrowly pass the
required annual test for flow rate per National Fire Protection Association (NFPA) standards.

Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. __6d__                              Page 2 of 5 
Meeting Date: December 10, 2019 
Based on the age of the pumps,  the fourth pump will likely also begin to experience
performance problems in the near term. 
Installing new isolation valves at each pump will allow individual pumps to be isolated to
facilitate  and  streamline  required  maintenance  and  testing.  Using  the  current  valve
arrangement any maintenance on the pump requires four pumps to be isolated from the
system. 
Diversity in Contracting 
The project staff, in coordination with the Diversity in Contracting department, have set a 4%
woman and minority-owned business enterprise (WMBE) aspirational goal for this Building
Engineering Systems contract. A significant portion of the project cost will be in the purchase of
the fire pump system which limits the amount of subcontracting that is available. 
DETAILS 
The pump house, located on air cargo road, was built in the 1970s and houses two electric
pumps to fill the reservoir, two electric pumps for baseline domestic/fire protection water, and
six pumps that support the fire emergency need. The six fire pumps are split as four diesel and
two electric pumps. As the airport grew the pump house was expanded in the early 2000s to
include four additional diesel pumps, for a total of eight diesel and two electric pumps, to
supply the peak need of 19,000 gallons per minute. The expansion added pump capacity but did 
not update any of the existing pumps. This project will replace existing pumps 5 through 8, and
install additional isolation valves, so one pump can be taken off line while the others remain
operational. 
The NFPA requires that emergency fire pumps be tested annually to certify the pressure and
flow rate. This project will install an inline flow meter on the fill line of the 2-million-gallon
water reservoir. The pump house piping configuration was designed so that each individual 
emergency fire pump can feed the reservoir through a series of valve alignments. The inline
meter with calibrated gauges can be used to certify the pumps while filling the reservoir and
not waste any water for testing. 
Scope of Work 
(1)   Demolish and remove four fire pump systems (pump, engine, control panel, and
associated connecting piping). 
(2)   Install four new equivalent fire pump systems. 
(3)   Provide  wiring,  testing,  commissioning,  and  associated  equipment  for  a  fully
functional fire pump system. 
(4)   Install valves to isolate each of the new pumps for maintenance. 
(5)   Install a bypass line that includes a direct measurement flow meter for annual flow
testing. Provide the wiring, testing, commissioning, and associated equipment for a
fully functional flow meter system. 

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

COMMISSION AGENDA  Action Item No. __6d__                              Page 3 of 5 
Meeting Date: December 10, 2019 

Schedule 
Activity 
Building Engineering System Advertise                         2020 Quarter 1 
Design start                                                      2020 Quarter 2 
Construction start                                               2020 Quarter 4 
In-use date                                                      2021 Quarter 3 
Cost Breakdown                                      This Request           Total Project 
Planning and Design Phase                                 $500,000              $660,000 
Construction and Closeout Phase                         $4,340,000            $4,340,000 
Total                                                          $4,840,000             $5,000,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1  Defer replacing the pumps until they are no longer operable. 
Cost Implications: $75,000 would need to be expensed. 
Pros: 
(1)   This defers the expense to a later date. 
Cons: 
(1)   This alternative may result in additional costs if the pumps need to be replaced on an
emergency need. 
(2)   This alternative removes the additional capacity if multiple pumps are out of service. 
(3)   This alternative does not address the need for an inline measurement for annual flow
testing. 
(4)   This alternative does not resolve the isolation issue on the pumps if one in the bank of
four needs service. 
(5)   This alternative will result in an increased maintenance cost to keep obsolete and
underperforming pumps in operation. 
This is not the recommended alternative. 
Alternative 2  Replace four pumps only. 
Cost Implications: $4,500,000 
Pros: 
(1)   The replacement pumps will have a new service life. 
(2)   The replacement pumps will be common equipment, reducing the parts inventory. 
(3)   Reduced maintenance costs. 
Cons: 
(1)   This alternative does not allow for each pump to be isolated for maintenance. 
(2)   This alternative will require an outside contractor to certify the pumps annually. 

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

COMMISSION AGENDA  Action Item No. __6d__                              Page 4 of 5 
Meeting Date: December 10, 2019 
This is not the recommended alternative. 
Alternative 3  Replace four fire pumps, install isolation valves, and install a flow metering
system. 
Cost Implications: $5,000,000 
Pros: 
(1)   This alternative provides the most reliable means to fight a fire. 
(2)   This alternative replaces four pumps in one request, reducing time, PM resources, and
costs. 
(3)   This alternative allows for each pump to be isolated individually for maintenance. 
(4)   This will allow for annual in-house flow measurement certification of the pumps. 
Cons: 
(1)   This is the highest capital investment. 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary               Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                   $580,000               $0        $580,000 
Current change                                 $4,320,000       $100,000      $4,420,000 
Revised Estimate                                $4,900,000       $100,000      $5,000,000 
AUTHORIZATION 
Previous authorizations                            $160,000               $0        $160,000 
Current request for authorization                $4,740,000        $100,000      $4,840,000 
Total authorizations, including this request       $4,900,000        $100,000      $5,000,000 
Remaining amount to be authorized                    $0             $0             $0 
The original estimate was developed in 2015 and only included the cost to replace two of the
four pumps. Through discussions with the stakeholders and evaluation of the project, the scope
was expanded to include the replacement of all four pumps, installation of isolation valves, and
installation of a flow meter system. 
Annual Budget Status and Source of Funds 
This project, CIP C800794, was included in the 2020-2024 capital budget and plan of finance
with a budget of $580,000. A budget increase of $4,320,000 was transferred from the
Aeronautical Reserve CIP (C800753) resulting in zero net change to the Aviation capital budget.
The funding source will be the Airport Development Fund and future revenue bonds. 

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

COMMISSION AGENDA  Action Item No. __6d__                              Page 5 of 5 
Meeting Date: December 10, 2019 
Financial Analysis and Summary 

Project cost for analysis              $5,000,000 
Business Unit (BU)                  Fire allocation to Airfield Movement and Terminal 
Effect on business performance     NOI after depreciation will increase due to inclusion of
(NOI after depreciation)             capital (and operating) costs in airline rate base. 
IRR/NPV (if relevant)                N/A 
CPE Impact                        $0.02 in 2022 
ATTACHMENTS TO THIS REQUEST 
(1)   Presentation slides 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
None 












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