20190304PAC to IIPA OPUC 6 1st SUPP.pdf

UM 1968 / PacifiCorp
February 25, 2019 OPUC Data Request 6 – 1st Supplemental OPUC Data Request 6 With respect to the plant decommissioning cost data used in the UM 1968 filing, please: (a) Provide the plant “Demolition and Decommissioning Costs Studies” for all Coal,
Natural Gas, and Geothermal Plants included in the UM 1968 filing.
(b) Fill out the table below by listing each generating unit and providing all requested information for each generating unit listed (see Exhibit PAC/202, Spanos/43).
Generating Unit Name
In Service Date
Probable Retirement Date
Study Date
Decommissioning Date

(c) Was the “DECOMMISSIONING COST” used to calculate “Weighted NS-% of Total Ret.”? (See work paper labeled “PAC - Production Net Salvage Analysis - Oregon
Plant”). Please explain how, and in your response, please provide all data references
and calculations for the Oregon share of decommissioning cost. 1st Supplemental OPUC Data Request 6 On February 19, 2019, OPUC Staff issued the following follow-up request:
Thank you for the data responses of 6a, b, c. “6. (a) Provide the plant “Demolition and Decommissioning Costs Studies” for all Coal, Natural Gas, and Geothermal Plants included in the UM 1968 filing.”
You provided data response for 6a is the “summary results of studies”, I still need to see the Demolition and Decommissioning Costs “Studies”. For example, the study report normally include the following information:
The Name of the consulting company conducted the study. Description of Retirement Activity:

1. Closure Planning and Preparation
Despite PacifiCorp's diligent efforts, certain information protected from disclosure by the attorney-client privilege or other applicable privileges or law may have been included in its responses to these data requests. PacifiCorp did not intend to waive any applicable privileges or rights by the inadvertent disclosure of protected information, and PacifiCorp reserves its right to request the return or destruction of any privileged or protected materials that may have been inadvertently disclosed. Please inform PacifiCorp immediately if you become aware of any inadvertently disclosed information.
UM 1968 / PacifiCorp
February 25, 2019 OPUC Data Request 6 – 1st Supplemental 2. Closure Operating Costs

3. Modification to Infrastructure 4. Demolition of Plant
5. Site Improvements
6. Estimate Contingency 7. Facilities Decommissioning Estimate Assumptions
8. Facilities Decommissioning Estimate Exclusions
LIST OF TABLES LIST OF FIGURES 1st Supplemental Response to OPUC Data Request 6 In response to OPUC Staff’s February 19, 2019 follow up request, PacifiCorp provides the following supplemental response to OPUC 6 (a):
Please refer to Confidential Attachment OPUC 6-1 1st Supplemental and Attachment OPUC 6-2 1st Supplemental. Confidential information is designated as Protected Information under Order No. 18-431
and may only be disclosed to qualified persons as defined in that order.
Despite PacifiCorp's diligent efforts, certain information protected from disclosure by the attorney-client privilege or other applicable privileges or law may have been included in its responses to these data requests. PacifiCorp did not intend to waive any applicable privileges or rights by the inadvertent disclosure of protected information, and PacifiCorp reserves its right to request the return or destruction of any privileged or protected materials that may have been inadvertently disclosed. Please inform PacifiCorp immediately if you become aware of any inadvertently disclosed information.