20240823PAC to Bayer 55-56.pdf

RECEIVED
Friday, August 23, 2024
IDAHO PUBLIC
UTILITIES COMMISSION
_ ROCKY MOUNTAIN
POWER
A DIVISION OF PACIFICORP
1407 W North Temple, Suite 330
Salt Lake City, Utah 84116
August 23, 2024
Thomas J. Budge
ti(&racineolson.com(C)
Brian C. Collins bcollins(&consultbai.com
Greg Meyer gmeyerkconsultbai.com
Kevin Higgins khiggins(c�r�,energystrat.com(C)
Neal Townsend ntownsendkenergystrat.com(C)
RE: ID PAC-E-24-04
Bayer Set 3 (49-56)
Please find enclosed Rocky Mountain Power's Responses to Bayer 3rd Set Data Requests 55-56.
Also provided is Attachment Bayer 55.
If you have any questions, please feel free to call me at(801)220-2313.
Sincerely,
/s/
Mark Alder
Manager, Regulation
Enclosures
C.c.: Eric L. Olsen/IIPA elokechohawk.com(C)
Lance Kaufman/IIPA lance(&ae isg insi h�(C)
Matthew Nykiel/ICL matthew.nykiel(&gmail.com
Brad Heusinkveld/ICL bheusinkveld(&idahoconservation.org
Ronald L. Williams/PIIC rwilliamskhawleytroxell.com
Brandon Helgeson/PIIC bhel eg sonLhawleytroxell.com
Bradley Mullins/PIIC brmullins(&mwanalytics.com
Val Steiner/PIIC val.steiner(&itafos.com
Kyle Williams/PIIC williamsk(&byui.edu
Monica Barrios-Sanchez/IPUC monica.barriossanchez(a),puc.idaho.gov
SecretM(a,puc.Idaho.gov

PAC-E-24-04/Rocky Mountain Power
August 23, 2024
Bayer Data Request 55
Bayer Data Request 55
New Test Year Transmission Projects Timeline and Costs: Reference
PAC/1000/Vail/14/Table 1. Please refer to the transmission projects listed in
Table 1 on p. 18 of RMP witness Richard A. Vail's direct testimony. Please
provide the following information for each transmission project listed in the table.
(a) A Gantt Chart showing the construction timeline and milestones.
(b) Explain whether there was any delay at any stage of the construction and the
reason for the delay.
(c) For any project that has not yet been placed into service, please explain the
impact(s) that would be caused by any delay in the planned in-service date.
(d) Please indicate whether a CPCN was required and, if so, the docket number
and date when was the CPCN granted for the project?
(e) If the project construction is being performed by is contracted to a third parry,
please provide the third party contractor name(s) and contract execution
date(s).
(f) If a project construction is being performed by is contracted to a third party,
please explain whether there is a guaranteed maximum price in the contract. If
yes, please provide the guaranteed maximum price for the project. If no,
please explain why not.
Response to Bayer Data Request 55
• Gateway South
a) Please refer to Attachment BAYER 55-1 which includes the following
attachments:
■ ALAeolus 230kV initial baseline schedule.pdf
■ A2.Aeolus500kv.Initial.Baseline.pdf
■ A3.LittleSnake.Initial.Baseline.pdf
■ A4.Coyote.Initial.Baseline.pdf
■ b.iii. GWS El A Approved Baseline Schedule 05.10.22.pdf
■ b.iii. GWSEI B Approved BL Schedule 5.16.22.pdf
■ b.iii. GWS EL CD Approved BL Schedule.pdf
■ c.v.1 GWWDI Tline BL App.pdf
b) The overall project schedule for the transmission line was aligned with the
baseline completion dates until early 2024. However, an unexpected
archaeological discovery was made at the Little Snake compensation
station, which connects power from Element A to Element B, linking

PAC-E-24-04/Rocky Mountain Power
August 23, 2024
Bayer Data Request 55
Elements C and D. Without this connection, it is impossible to complete
any of the lines, as they are arranged in series. The discovery required
PacifiCorp to implement an emergency shoofly design to partially connect
the Little Snake shoofly to the main transmission line, allowing for energy
flow and the continuation of line work on Elements B and C to D. Due to
the extent of the shutdown, PacifiCorp extended the completion dates for
each of the Gateway South Elements, as the delay was not caused by the
contractor's work. Detailed schedule variance explanations are included in
the attachments for the substations, which were affected by several key
factors: 1) The Aeolus and Clover substations experienced transformer
delivery delays due to manufacturing issues, necessitating schedule
adjustments. 2) The Little Snake substation encountered a significant
cultural find, severely delaying construction. In addition, supply chain
issues at several sites delayed various equipment and materials, impacting
the original sequence. PacifiCorp and its contractor have implemented
several mitigation measures, including engineering workarounds and
schedule re-sequencing, to ensure the project is energized in 2024.
c) Delay in construction of the Gateway South, Gateway West Segment D.1,
EV2024 Network Upgrades, Anticline 345 kV Phase Shifter and Gateway
South Supporting Projects results in inability to interconnect the needed
cost effective resources to serve PacifiCorp network loads. The projects
listed above allows for interconnection of up to 2,030 MW of new cost
effective resources in eastern Wyoming which currently has only one way
out of Wyoming and stresses the existing Jim Bridger West 345 kV path
into Southeast Idaho. The addition of the Gateway South line unloads
these 345 kV lines as well as the stress on the underlying 138 kV
transmission system and enhances the reliability of Customers in
southeast Idaho and Goshen area as well as other Customer's in Idaho.
Delay in construction of the Gateway South line will also result in the
inability to provide the required transmission service for a point-to-point
transmission service request as per PacifiCorp's OATT requirements.
d) A Certificate of Public Convenience and Necessity was required in
Wyoming. Wyoming Docket Number: 20000-588-EN-20, May 10, 2022.
A Certificate of Public Convenience and Necessity was required in Utah.
Utah Docket Number: 21-035-54, April 08, 2022.
e) The contractor for transmission line construction is performed by Quanta
Infrastructure Solutions Group. Substation construction is performed by
Cache Valley Electric. Contract execution dates for the transmission line
and substation contractors are January 26, 2022, and September 22, 2022,
respectively.
f) PacifiCorp does not use a guaranteed maximum price strategy. The most
common pricing strategy is a fixed firm lump sum approach based on a
defined scope, providing pricing certainty and allowing PacifiCorp full
control over allocated risk funds.

PAC-E-24-04/Rocky Mountain Power
August 23, 2024
Bayer Data Request 55
• Gateway West D.1
a) Please refer to Attachment Bayer 55-2 which includes the following
attachmentc.v.I GWWDI Tline BL App.pdf.
b) The project has been re-sequenced from the original baseline due to
various factors, including unexpected environmental and access
constraints, climatic conditions, supply chain delays and resultant
productivity challenges. PacifiCorp and its contractor have implemented
several mitigations, engineering workarounds and schedule resequencing
processes to ensure the project will be energized by the end of 2024,
meeting the required deadlines for additional wind farm generation
connections.
c) Please refer to the explanation provided in section Gateway South above.
d) A Certificate of Public Convenience and Necessity was required in
Wyoming. Wyoming Docket Number: 20000—588-EN-20, May 10,
2022. A Certificate of Public Convenience and Necessity was required in
Utah. Utah Docket Number: 21-035-54, April 08, 2022.
e) The contractor for transmission line construction is performed by Forbes
Bros. Substation construction is performed by Great Southwestern
Construction Inc. Contract execution dates for the transmission line and
substation contractors are July 20, 2022, and February 2, 2023,
respectively.
f) PacifiCorp does not use a guaranteed maximum price strategy. The most
common pricing strategy is a fixed firm lump sum approach based on a
defined scope, providing pricing certainty and allowing PacifiCorp full
control over allocated risk funds.
• EV2024 Network Upgrades
As indicated in the testimony provided by Richard A Vail, the Energy Vision
2024 Generation Interconnection Network Upgrade project consists of five
generation interconnection projects. These projects are included below:
• Q0409 Boswell Springs Wind
a) Please refer to Attachment Bayer 55-3 which includes the following
attachment Boswell project schedule.pdf.
b) Construction is in progress and no delays have occurred to date.
c) A delay to the in-service date would result in a delay in back-feeding
power to the interconnection customer's facilities.
d) A CPCN was not required
e) The contractor for construction is RC Hunt Electric. The contract
execution date is May 21, 2024.
f) PacifiCorp does not use a guaranteed maximum price strategy. The
most common pricing strategy is a fixed firm lump sum approach

PAC-E-24-04/Rocky Mountain Power
August 23, 2024
Bayer Data Request 55
based on a defined scope, providing pricing certainty and allowing
PacifiCorp full control over allocated risk funds.
• Q0713 Cedar Springs IV Wind
a) Please refer to Attachment Bayer 55-4 which includes the following
attachment Cedar Springs Preliminary Schedule.pdf.
b) Foundation installation is currently delayed for two to four weeks.
This delay is due to a renegotiation of property purchase with the
landowner. The project does remain on track for completion in 2024.
c) A delay to the in-service date would result in a delay in back-feeding
power to the interconnection customer's facilities.
d) A Certificate of Public Convenience and Necessity was not required.
e) The contractor is Great Southwestern Construction Inc. The release
was executed June 24, 2024.
f) PacifiCorp does not use a guaranteed maximum price strategy. The
most common pricing strategy is a fixed firm lump sum approach
based on a defined scope, providing pricing certainty and allowing
PacifiCorp full control over allocated risk funds.
• Q0785 Anticline Wind
a) Please refer to Attachment Bayer 55-5 which includes the following
attachment RMP Anticline Wind Project—Progress Schedudle.pdf..
b) Construction is in progress and no delays have occurred to date.
c) A delay to the in-service date would result in a delay in back-feeding
power to the interconnection customer's facilities.
d) A Certificate of Public Convenience and Necessity was not required.
e) The contractor is Summit Line Construction, and the contract was
executed on June 25, 2024.
f) PacifiCorp does not use a guaranteed maximum price strategy. The
most common pricing strategy is a fixed firm lump sum approach
based on a defined scope, providing pricing certainty and allowing
PacifiCorp full control over allocated risk funds.
• Q0835 Rock Creek Wind 1 and Q0836 Rock Creek Wind 2
a) Please refer to Attachment Bayer 55-6 which includes the following
attachment Rock Creek I and II Schedule.pdf..
b) The Rock Creek I Foote Creek substation interconnect construction is
delayed due to the long lead time of the materials but remains on track
for completion in 2024. Rock Creek Wind II is on schedule with no
current delays.
c) A delay to the in-service date would result in a delay in back-feeding
power to the interconnection customer's facilities.
d) A Certificate of Public Convenience and Necessity was not required.
e) The contractor for transmission line construction for both Rock Creek
I and II is PAR Electrical Contractors. The release was executed May

PAC-E-24-04/Rocky Mountain Power
August 23, 2024
Bayer Data Request 55
6, 2024. The contractor for the substation construction for both Rock
Creek I and II is Cache Valley Electric. The release was executed
September 19, 2022. At the Rock Creek I Foote Creek substation
Power Engineers is the construction contractor. The release was
executed May 2, 2024. Rock Creek II is also utilizing Power Engineers
as a contractor and this contract was executed on December 22, 2023.
f) PacifiCorp does not use a guaranteed maximum price strategy. The
most common pricing strategy is a fixed firm lump sum approach
based on a defined scope, providing pricing certainty and allowing
PacifiCorp full control over allocated risk funds.
• Gateway Supporting Projects
a) Please refer to Attachment Bayer 55-7 which includes the following
attachment PAC—Riverton Preliminary Baseline Schedule.pdf..
b) The Riverton shunt capacitor construction activities have only recently
commenced; as such, the schedule remains on track with no significant
deviations from the baseline. The Mustang shunt capacitor has
experienced delays due to environmental and access constraints. This
project will begin on July 15, 2025, and will be energized in October
2025.
c) Please refer to the explanation provided in section Gateway South above.
d) A Certificate of Public Convenience and Necessity was not required.
e) The construction contractor is Great Southwestern Construction Inc. The
contract was executed May 30, 2024.
f) PacifiCorp does not use a guaranteed maximum price strategy. The most
common pricing strategy is a fixed firm lump sum approach based on a
defined scope, providing pricing certainty and allowing PacifiCorp full
control over allocated risk funds.
• Path C Transmission
a) Please refer to Attachment Bayer 55-8 which includes the following
attachment 002-Construction_Schedule.pdf.
b) The Bridgerland substation transformer experienced delays and was
delivered later than planned.
c) The project is in-service. If the construction was delayed it may result in
extending the N-2 reliability issues on the parallel 138 kV system around
Bridgerland that were identified as part of an NERC FAC-013 Assessment
of Transfer Capability across transmission path known as "Path C". Delay
in construction of this Project also delays the improvement in the
reliability of the 138 kV system that runs parallel to the Path C. The
Project improves the load service in the Bridgerland area under normal
and outage conditions.
d) A Certificate of Public Convenience and Necessity was not required.
e) Sturgeon Electric is the construction contractor, and the release was
executed September 2022.

PAC-E-24-04/Rocky Mountain Power
August 23, 2024
Bayer Data Request 55
f) PacifiCorp does not use a guaranteed maximum price strategy. The most
common pricing strategy is a fixed firm lump sum approach based on a
defined scope, providing pricing certainty and allowing PacifiCorp full
control over allocated risk funds.
• Oquirrh to Terminal
a) Please refer to Attachment Bayer 55-9 which includes the following
attachment o-T TMET-2009-C-001 Schedule 080924.pdf..
b) No notable delays in the project schedule which remains on track for
completion in 2024.
c) The delay in construction of the Oquirrh—Terminal 345 kV line will
result in the continuation of the transmission constraints that exist between
the Mona area and Wasatch Front. The delay in this Project result in delay
of increasing the capacity across the Wasatch Front cutplane which is used
to transmit resources from southern Utah to Wasatch Front. The Project
also alleviates system reliability issues (thermal overloads) under outage
conditions which otherwise could potentially result in shedding of
approximately 1,350 MW of load under outage conditions.
d) A Certificate of Public Convenience and Necessity was not required.
e) Construction services are provided by EC Source. The contract execution
date was May 6, 2024.
f) PacifiCorp does not use a guaranteed maximum price strategy. The most
common pricing strategy is a fixed firm lump sum approach based on a
defined scope, providing pricing certainty and allowing PacifiCorp full
control over allocated risk funds.
• Anticline Phase Shifter
a) Please refer to Attachment Bayer 55-10 which includes the following
attachment Anticline Baseline Schedule.pdf..
b) The project sequence responded to several challenges driven by supply
chain issues, which led to actual-versus-baseline schedule differences.
However, with re-sequencing and collaborative efforts by PacifiCorp and
the contractor, the project will be energized on schedule and the original
contract final completion date will be attained.
c) The project remains on schedule to be placed in-service before the end of
2024. Please refer to the explanation provided in section Gateway South
above.
d) A Certificate of Public Convenience and Necessity was required.
Wyoming Docket Number: 20000—588-EN-20, May 10, 2022.
A Certificate of Public Convenience and Necessity was required in Utah.
Utah Docket Number: 21-035-54, April 08, 2022.
e) The construction contractor is Quanta Infrastructure Solutions Group, and
the contract was executed March 3, 2023.
f) PacifiCorp does not use a guaranteed maximum price strategy. The most
common pricing strategy is to use a fixed firm lump sum price approach

PAC-E-24-04/Rocky Mountain Power
August 23, 2024
Bayer Data Request 55
based on a defined scope,providing a certainty in pricing and full control
of allocated risk funds by PacifiCorp.
Recordholder: Brandon Smith
Sponsor: To Be Determined

PAC-E-24-04/Rocky Mountain Power
August 23, 2024
Bayer Data Request 56
Bayer Data Request 56
New Test Year Transmission Projects Timeline and Costs: Reference
PAC/1000/Vail/14/Table 1. Please refer to the transmission projects listed in
Table 1 on p. 18 of RMP witness Richard A. Vail's direct testimony. Please
provide the following information for each transmission project listed in the table.
(a) A Gantt Chart showing the construction timeline and milestones.
(b) Explain whether there was any delay at any stage of the construction and the
reason for the delay.
(c) For any project that has not yet been placed into service, please explain the
impact(s) that would be caused by any delay in the planned in-service date.
(d) Please indicate whether a CPCN was required and, if so, the docket number
and date when was the CPCN granted for the project?
(e) If the project construction is being performed by is contracted to a third parry,
please provide the third party contractor name(s) and contract execution
date(s).
(f) If a project construction is being performed by is contracted to a third party,
please explain whether there is a guaranteed maximum price in the contract. If
yes, please provide the guaranteed maximum price for the project. If no,
please explain why not.
Response to Bayer Data Request 56
Please refer to the Company's response to Data Request Bayer 55.
Recordholder: Brandon Smith
Sponsor: To Be Determined