Item No. 6c_supp
Meeting Date: April 28, 2020
Concourse C New Power Center
(CIP #C800724)
Construction Authorization

Project Scope
Retrofit existing space to create a new electrical room
Install new 3,200 amp electrical Power Center
Install new 480V 1600 amp Switchboards
Replace multiple obsolete electrical panels
Restore fire zones, by transferring 4 loads from existing power
centers to new power center.

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New Power Center Location



3

Example of Similar Power Center



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Example Obsolete Panel
Replacement breakers not
available  failure will
result in extended outage

Meters not networked 
manual meter readings
required

Modules no longer
manufactured 
cannot add new tenant
services

Budget
Approved     Expended     Estimate at
Budget        to-date      Completion
Design              $2.0M         $1.3M         $2.0M

Construction         $8.5M           $0           $8.5M
Total      $10.5M         $1.3M         $10.5M

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Schedule
Commission Construction Authorization (Today)               Q2 2020
Advertise for Bid                                             Q2 2020
Construction Start                                          Q1 2021
In-Use Date                                             Q4 2022




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RISKS
Project Risk               Budget/Schedule Impact                Mitigation Plan
Existing underground conduits    Increase cost for redesign     PCS small works project was
may not be useable for new        and construction of new      executed and confirmed existing
medium voltage feeders           overhead conduits           conduits are reusable
8+ months delay
Existing Medium Voltage        Additional retrofit of existing     Collaborative evaluation by design
trench T9 has potential code     trench may be required to       consultant, F&I, and Maintenance
challenges                      bring it up to code               staff to confirm proposed design.
Poor as-built information of      Potential for construction        Greater level of design field
congested area in and around   change order due to             investigation was performed
the construction site             unforeseen discovery.


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Cost and Schedule Project Estimating Certainty
We are here
33
DIVISION APPROVEDDIVISION APPROVED
44
AUTHORIZEDAUTHORIZED
Degree of Uncertainty       Managing Director
Commission authorized design    55
approved
Refine cost and schedule estimates up to 100%
Staff level authorization for cost            10%            30%           60%                     IN PROGRESSIN PROGRESS                66
and schedule estimates              design        design       design         Commission Authorization
COMPLETECOMPLETE
Construction



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Alternative 1
Maintain the status quo. Do nothing
Cost Implications: An estimated $1,355,235 in costs to date will need to be expensed if
this option is pursued.
Pros:
No additional capital cost.
Cons:
Does not provide electrical power for capacity growth of Concourse C.
If no action is taken, the existing power center will operate at maximum electrical
power capacity, increasing the risk of system overloading and power outages.
This is not the recommended alternative.
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Alternative 2
Install a new power center on the north end of Concourse C.
Cost Implications: $10,500,000
Pros:
This alternative will provide the best solution in providing additional electrical
power capacity for future growth on all of Concourse C.
This alternative will provide the following for Concourse C: Capacity for future
growth; Robust/reliable distribution system; Infrastructure to support future tenant
projects and airline utilization equipment on the north end; Re-establish the fire
zones and eliminate a hazardous situation in the event of an emergency.
Cons:
Large capital project required to build out this new electrical infrastructure facility.
This is the recommended alternative.
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Today's Meeting Request
Request authorization to:
1.  Advertise and award Concourse C New Power Center
Project for Construction


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