20190304PAC to IIPA OPUC 6.pdf

UM 1968 / PacifiCorp
February 19, 2019 OPUC Data Request 6 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. Response to OPUC Data Request 6 (a) Please refer to Attachment OPUC 6-1 for a decommissioning study summary in
support of the company’s docket UM 1968 filing. (b) Please refer to Attachment OPUC 6-2. (c) Yes, the decommissioning costs were used in the calculation of the weighted net
salvage percent, as shown in column 6 of Attachment OPUC 6-3. The “Total Demolition” cost plus the “Total Environmental” cost from Attachment OPUC 6-1 equals the decommissioning costs in Attachment OPUC 6-3. In Attachment OPUC 6-3, the decommissioning costs are divided by the estimated terminal retirements, resulting in the terminal retirements’ net salvage percentage. The calculated interim
removal costs are divided by the estimated interim retirements, resulting in the interim retirements’ net salvage percentage. The sum of the interim removal costs and the decommissioning costs are divided by the sum of the interim retirements and terminal retirements, resulting in the total net salvage percentage. See Attachment OPUC 6-3 for the Oregon allocation of the decommissioning costs.
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.