Topic:"Asset Retirement Obligation" in M08929

1 Power sites were then fit into this matrix to generate site specific cost estimates for 2 decommissioning EAs. The costs to pursue a full EA include the costs to engage with the 3 Mi’kmaq and consult with stakeholders. 4 5 The Nova Scoti...

AI summary The text discusses the process of estimating decommissioning costs for power sites, including engagement with the Mi’kmaq and stakeholders, and the impact of the Nova Scotia Wetland Conservation Policy on wetland permitting costs. The Strum Report is referenced, noting that while wetland permitting costs are not significant, potential compensation costs may arise from environmental assessments.

1 water retaining structures for longer than they have generated power. They may have 2 previously operated sawmills or other functions. As stated in the Hatch Report, sediment 3 can account for 48 percent of a project’s infrastructure rem...

AI summary The text discusses the potential costs associated with sediment management and archaeological considerations during the decommissioning of hydro structures. It references the Hatch Report and Boreas Report, highlighting sediment removal costs and archaeological assumptions developed without initial engagement with Mi’kmaq communities.

1 3.0 SYSTEM COSTS 2 3 The following subsections provide both the forecast sustaining costs and 4 decommissioning costs of each of NS Power’s hydro systems represented by the Net 5 Present Value (NPV) of the option over 40 years. The metho...

AI summary This section presents the sustaining and decommissioning costs for various hydro systems operated by NS Power, along with their annual generation in GWh. The costs are calculated over a 40-year period and include site-specific assumptions. The data is summarized in Figure 3.

41 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 3.11 Roseway Hydroelectric System 2 3 The Roseway hydro system has not generated electricity since 2009 and is classified as 4 not used not useful for accounting p...

AI summary The Roseway hydro system has been non-operational since 2009 and is not useful for accounting purposes. It has a total capacity of 1 MW. The document discusses the costs associated with its decommissioning, including removal, environmental, and sedimentation costs, totaling $4,566,000.

55 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 5.0 CONCLUSION 2 3 The Hydro Study provides forecast sustaining capital and operating costs and 4 decommissioning costs of each of NS Power’s hydro systems. NS Pow...

AI summary The Hydro Study outlines forecasted sustaining capital, operating, and decommissioning costs for NS Power’s hydro systems. Expert consultants were engaged to estimate costs related to physical removal, environmental assessment, sediment management, and archaeology. NS Power is also preparing for its next Integrated Resource Plan (IRP) by evaluating storage technologies and renewable energy options.

on the asset and initiative, interventions may entail a replacement of the asset, resulting in a significant capital spend, or a smaller sustainment/refurbishment activity with a more moderate budget. The costs for the first interval repre...

AI summary The document discusses the costs associated with asset replacement and refurbishment, emphasizing the need for detailed condition and risk assessments before major interventions. METSCO confirms the reasonableness of NS Power's costing assumptions, noting that industry practices support the approach of using historical data and engineering estimates for long-term spending planning.

Rev. 0 December 12, 2018 This document contains confidential information intended only for the person(s) to whom it is addressed. The information in this document may not be disclosed to, or used by, any other person without Hatch's prior...

AI summary This document provides a confidential estimate of the decommissioning costs for Nova Scotia Power Inc.'s hydro system control structures, dated December 12, 2018.

...................................................... 48 Figure 33: The Wreck Cove Hydroelectric System......................................................................... 49 Figure 34: Schematic of the Wreck Cove Generating System ....

AI summary The document includes figures and appendices related to the Wreck Cove Hydroelectric System and infrastructure removal costs. It references detailed cost estimates and environmental considerations for dam decommissioning.

developed, as is described within the report, to establish a high level estimate of the potential costs for full decommissioning of the hydroelectric assets. Results The total costs for decommissioning the entire NSPI hydroelectric system...

AI summary The report estimates the total cost for decommissioning NSPI's entire hydroelectric system at approximately $760 million (2018 CDN), as outlined in Table ES-3.

to be in the order of $760 million (in 2018 $CDN) as is summarized in Table ES-3. Table ES-3: Estimated Costs to fully Decommission NSPI’s Hydroelectric System

AI summary The estimated cost to fully decommission NSPI’s hydroelectric system is approximately $760 million in 2018 CDN dollars, as detailed in Table ES-3.

Project Management Sturctures H357345 NSPI's Hydro System Decommissioning Cost Estimate Combined Estimated Estimated Installed Infrastructure Environmental Sediment Capacity Removal Costs Costs in $ 2018 Management System (MW) in $ 2018 CD...

AI summary The document presents a detailed breakdown of the estimated costs for decommissioning various hydro systems in Nova Scotia, including infrastructure removal, environmental costs, and sediment management, with total costs for each system and overall totals provided.

Project Management Sturctures H357345 NSPI's Hydro System Decommissioning Cost Estimate our clients through a commitment to quality, lower operating costs, more efficient utilization of capital assets, higher standards for safety and risk...

AI summary This document outlines the methodology used by Hatch Ltd. to estimate decommissioning costs for various hydro systems owned by Nova Scotia Power Inc. (NSPI), including the use of existing data and empirical approaches for systems not previously studied.

H357345-00000-200-230-0001, Rev. 0, Page 6 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appen...

AI summary The document outlines the decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system, highlighting the assessment of infrastructure removal costs and the inclusion of additional allowances where access is limited.

This is further discussed in Section 3.2 – Infastructure removal Costs. Figure 2: NSPI’s Hydroelectric System 2.2 Estimating Environmental Decommissioning Costs Environmental costs represent the second component of the total decommissionin...

AI summary The text discusses the estimation of environmental decommissioning costs and sediment management costs associated with hydroelectric system removal. Environmental costs are based on precedent assessments, and sediment management costs can significantly increase project costs, with up to 48% of total dam decommissioning costs attributed to sediment management.

sion: 0 Review: TC -F Figure: 7c Page: Document Path: T:\Maps\GIS_Data\NSPI\BlackRiver\MXD\BlackRiver_AllStructures.mxd REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix B Page 24 of 110 Nova Scotia Power In...

AI summary This document provides an overview of the decommissioning cost estimate for the Bear River Generating System, including removal and environmental costs, potential environmental assessment and remediation costs, and sediment management allowances. A schematic of the system and a summary of assessed structures are included.

ate A schematic of the system is provided in Figure 12. Figure 12: Schematic of the Dickie Brook Generating System Decommissioning estimates for this system consisted of high level estimates of removal and environmental costs associated wi...

AI summary The text describes the decommissioning estimates for the Dickie Brook Generating System, including removal and environmental costs, as well as a reference to a table summarizing the structures assessed.

ate A schematic of the system is provided in Figure 14. Figure 14: Schematic of the Fall River Generating System Decommissioning estimates for this system consisted of high level estimates of removal and environmental costs associated with...

AI summary The text discusses decommissioning estimates for the Fall River Generating System, including removal and environmental costs, and provides a summary of structures assessed in Table 6. The structures include various dams and their associated dimensions.

H357345-00000-200-230-0001, Rev. 0, Page 29 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appe...

AI summary The document provides a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system control structures as part of a project management report.

imate A schematic of the system is provided in Figure 24. Figure 24: Schematic of the Paradise Generating System Decommissioning estimates for this system consisted of high level estimates of removal and environmental costs associated with...

AI summary The document provides a schematic of the Paradise Generating System and outlines decommissioning estimates, including removal and environmental costs, as well as sediment management considerations. Table 11 summarizes the structures assessed for the Paradise Hydroelectric System.

408 558,671 Saunders Pond Dam and Spillway 12 2,012 765,372 H357345-00000-200-230-0001, Rev. 0, Page 36 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFI...

AI summary The document provides a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system structures, including the Saunders Pond Dam and Spillway. It includes project management details and references a specific document version and page number.

H357345-00000-200-230-0001, Rev. 0, Page 39 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appe...

AI summary This document provides a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system control structures as part of a project management report.

H357345-00000-200-230-0001, Rev. 0, Page 42 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appe...

AI summary This document is a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system control structures, prepared as part of a project management report.

H357345-00000-200-230-0001, Rev. 0, Page 50 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appe...

AI summary This document provides a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system control structures as part of a project management report.

Project Management Sturctures H357345 NSPI's Hydro System Decommissioning Cost Estimate 3. Cost Estimates 3.1 Dam Decommissioning Risks Any dam decommissioning that involves the restoration of the systems to natural free-flowing conditions...

AI summary The document discusses the complexities and costs associated with decommissioning NSPI's hydro system, emphasizing the need to account for environmental considerations and sediment management risks, which can lead to significant additional costs.

ver, as is discussed in Section 4, any decommissioning project also carries with it sediment management risks that can amount to significant additional costs. A review of various dam removal case histories indicates that the mitigation mea...

AI summary The text discusses the risks and mitigation measures associated with dam decommissioning, highlighting sediment management challenges and long-term downstream effects if proper measures are not taken. Table 17 summarizes reported post-removal problems from precedent dam decommissioning projects.

and remediation costs. It is therefore necessary and prudent to factor these costs into any decommissioning scenario to obtain an estimation of the total decommissioning costs. With these limitations in mind, estimated infrastructure remov...

AI summary The text discusses the importance of factoring in remediation and infrastructure removal costs for decommissioning scenarios. It highlights the use of a 50% contingency due to uncertainties and the basis for estimating sediment management costs. The process involves dismantling and restoring sites to their preconstruction conditions.

H357345-00000-200-230-0001, Rev. 0, Page 53 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appe...

AI summary The document discusses the methodology for estimating decommissioning costs for NSPI's hydro system, noting that these estimates are classified as Class 5 – Concept screening. These estimates use stochastic methods, historical data, and parametric modeling, with a typical accuracy range of -50% to +100%.

H357345-00000-200-230-0001, Rev. 0, Page 57 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appe...

AI summary The document discusses the methodology used by Nova Scotia Power Inc. (NSPI) to estimate decommissioning costs for hydro infrastructure, including adjustments for specific facilities like surge tanks and long penstocks, and the inclusion of allowances for access roads, demolition, indirect costs, and contingencies.

CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix B Page 77 of 110 Nova Scotia Power Inc. Project Management Report Decommissioning Cost Estimate for NSPI Control Project Management Sturctures H357345 NSPI's Hydro Syste...

AI summary The document discusses environmental considerations for decommissioning hydro structures, including dam size, fisheries, indigenous community interests, recreational use, sediment management, and flood reduction. These factors influence the scope of environmental studies and consultations required, though actual implementation costs are not included in the estimates.

CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix B Page 79 of 110 Nova Scotia Power Inc. Project Management Report Decommissioning Cost Estimate for NSPI Control Project Management Sturctures H357345 NSPI's Hydro Syste...

AI summary The decommissioning cost estimate for NSPI's hydro system includes environmental mitigation measures such as water quality enhancement and habitat diversity improvements. The presence of listed fish species may increase costs and delay schedules due to more detailed assessments and compensation negotiations.

H357345-00000-200-230-0001, Rev. 0, Page 62 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appe...

AI summary The document discusses the decommissioning cost estimate for NSPI Control Structures, noting that compensation to neighboring property owners and commercial interests is not included in the estimates provided in the report.

CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix B Page 81 of 110 Nova Scotia Power Inc. Project Management Report Decommissioning Cost Estimate for NSPI Control Project Management Sturctures H357345 NSPI's Hydro Syste...

AI summary The document discusses the need for hydraulic modeling and sediment analysis to assess the environmental impact of decommissioning dams in Nova Scotia Power Inc.'s hydro system. It highlights the importance of understanding sediment quality, fluvial geomorphology, and ecological factors to determine appropriate sediment management strategies and associated costs.

H357345-00000-200-230-0001, Rev. 0, Page 64 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appe...

AI summary This document presents a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system, specifically highlighting structures at Annapolis, Black River (Gaspereau Lake), St. Margaret’s Bay, and Tusket.

eparate from the infrastructure removal precedent method. The steps involved in the development of the precedent costs are detailed in the following sections. 3.5 Step 1: Dam Decommissioning Cost Literature/Case Study Review Approximately...

AI summary The document outlines the process for developing a precedent cost database for dam decommissioning. It includes a review of 300 academic and technical documents, incorporation of Hatch's previous estimates, and the use of a 22% allocation for environmental costs based on Pansic et al.'s findings. A spreadsheet database was compiled with information on approximately 140 dam structures and their associated environmental decommissioning costs.

or cost estimates. The result was a database listing approximately 140 dam structures along with the known or estimated environmental decommissioning cost. H357345-00000-200-230-0001, Rev. 0, Page 65 Ver: 04.03 © Hatch 2018 All rights rese...

AI summary The document discusses the categorization of 140 dam structures based on size, determined by height, reservoir volume, and reservoir surface area, as part of a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system.

Medium 5–7 High 8 – 10 3.8 Step 4: Cost Estimate Range Generation Dam structures from the Database spreadsheet were then categorized into one of the nine categories (e.g., Small size dam with Low environmental concerns, Medium size dam wit...

AI summary This section outlines Step 4 of the cost estimation process, where dam structures are categorized based on size and environmental concerns. Median values for each category are calculated to estimate environmental costs and total decommissioning costs, as displayed in Table 21.

IDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix B Page 86 of 110 Nova Scotia Power Inc. Project Management Report Decommissioning Cost Estimate for NSPI Control Project Management Sturctures H357345 NSPI's Hydro System De...

AI summary This document provides a cost estimate for the decommissioning of NSPI Control Structures, with Table 21 outlining costs associated with varying dam sizes and environmental concerns.

$6,600,000 $30,000,000 High $66,000,000 $300,000,000 3.9 Step 5: Application to NSPI Systems After generating the matrix of estimating the environmental costs, a new database with only NSPI Hydro Systems was developed based on the informat...

AI summary The text describes the creation of a database for NSPI Hydro Systems to estimate environmental and decommissioning costs based on dam size categories. The methodology was applied to each primary structure in the system, and costs were estimated based on these categories.

6,000 Sheet Harbour Precedent 5,335,000 Sissiboo Precedent 33,803,000 St. Margaret’s Bay Comprehensive 10,120,734 Tusket Comprehensive 10,583,882 Wreck Cove Precedent 45,485,000 Comprehensive for Gaspereau System only. H357345-00000-200-23...

AI summary The document contains decommissioning cost estimates for NSPI's hydro system structures, including specific figures for various locations such as Sheet Harbour, Sissiboo, and St. Margaret’s Bay, with amounts ranging from $5,335,000 to $45,485,000.

H357345-00000-200-230-0001, Rev. 0, Page 71 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appe...

AI summary The decommissioning cost estimate for NSPI's hydro system excludes potential costs related to reservoir sediment investigation and hazardous material abatement due to uncertainties in the quantity and quality of sediments and the presence of hazardous materials like lead and asbestos.

ONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix B Page 90 of 110 Nova Scotia Power Inc. Project Management Report Decommissioning Cost Estimate for NSPI Control Project Management Sturctures H357345 NSPI's Hydro System...

AI summary This table outlines sediment management cost allowances for decommissioning NSPI's hydro system, classifying sediment types and assigning corresponding cost percentages based on the Pansic average.

f an allowance for sediment management for each system are listed in Table 25. Table 25: Total Estimated Decommissioning Costs (including Sediment Management) Total Costs as a Percentage of the Total Estimated Decommissioning Cost Removal...

AI summary The text presents a table listing total estimated decommissioning costs, including sediment management, for various systems in Nova Scotia. The table includes costs for each system, as well as the percentage of total decommissioning costs attributed to infrastructure removal, environmental factors, and sediment management.

ϭϭϯ͕ϭϵϴ͕ϬϬϬ ϭϬ͕ϯϬϮ͕ϰϬϱ ϯϱ͕ϯϲϱ͕ϬϬϬ ϭϱϴ͕ϴϲϲ͕ϬϬϬ D^ EŽƚĞƐ͗ dĞŶDŝůĞ>ĂŬĞĂŵŝŶƚŚĞ^ŚĞĞƚ,ĂƌďŽƵƌ,LJĚƌŽ^LJƐƚĞŵǁĂƐƌĞŵŽǀĞĚĨƌŽŵƚŚĞƉƌŝŽƌŝƚŝnjĂƚŝŽŶƐƉƌĞĂĚƐŚĞĞƚďĞĐĂƵƐĞŝƚǁĂƐĚĞĐŽŵŵŝƐƐŝŽŶĞĚŝŶϮϬϭϯ hŶŝĂĐŬĞ>ĂŬĞĂŵŝŶƚŚĞ^ŝƐƐŝ,LJĚƌŽ^LJƐƚ...

AI summary The document provides a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system, specifically focusing on environmental costs associated with dam decommissioning. It includes an appendix with a methodology for calculating these costs.

Project Management Sturctures H357345 NSPI's Hydro System Decommissioning Cost Estimate B.1 Introduction An existing Hatch excel file with dam decommissioning costs was utilized as the basis of the dam decommissioning database. This databa...

AI summary This document outlines the methodology used to estimate decommissioning costs for NSPI's hydro system, including the use of a Hatch Excel database with 140-150 dam projects and a review of academic literature to determine environmental cost components. It also references a standard percentage (22%) from non-Hatch projects for environmental engineering costs.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 28 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Avon River Hydro Electri...

AI summary This document provides an estimate summary for the decommissioning of the Avon River Hydro Electric Generation System, including site remediation, site access removals, and building and structure removals, with associated costs and assumptions.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 29 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Avon River Hydro Electri...

AI summary This document presents an estimate of decommissioning costs for the Avon No. 2 Development within the Avon River Hydro Electric Generation System, including site remediation, site access removals, and building and structure removals.

Auxiliary Buildings Removals (not associated with Production Plant) $0.00 No auxilliary buildings at this site. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Remov...

AI summary The document outlines the costs and removals associated with decommissioning various facilities, including boilers, turbines, generators, and electrical systems, with specific line items detailing expenses and salvage allowances.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 35 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Bear River Hydro Electri...

AI summary This document provides an estimate summary for the decommissioning of the Bear River Hydro Electric Generation Station, including site remediation and building removal costs. The costs include site remediation, powerhouse removal, and associated disposal expenses.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text mentions the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

(Inc. Turbine) -$500.00 Allowance General Parts -$1,000.00 Allowance Insulated Wire and Cables No. 1 -$1,000.00 Allowance Insulated Wire and Cables No. 2 -$1,000.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Managemen...

AI summary The document provides a breakdown of costs related to site decommissioning, including allowances for turbine parts, insulated wire, and engineering management, with a subtotal for Ridge Development. It notes that HST is additional to the estimated costs and includes a redacted section.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 36 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Bear River Hydro Electri...

AI summary This document provides an estimate of decommissioning costs for the Bear River Hydro Electric Generation Station, including site remediation and building removal costs, with specific assumptions and notes for each item.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text discusses the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

-$500.00 Allowance General Parts -$1,000.00 Allowance Insulated Wire and Cables No. 1 -$1,000.00 Allowance Insulated Wire and Cables No. 2 -$1,000.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $88,458.00 Si...

AI summary The text outlines various allowances and costs associated with a project, including site decommissioning estimates, with specific attention to the removal of transmission cables, substations, and transformers by third parties. The subtotal for site decommissioning is listed as $904,668.80, with HST being an additional cost.

$904,668.80 Notes: 1. Transmission cable, substations and related transformers to be removed by others in preparation for general demolition. 2. HST is additional to stated estimated costs. Figure 4 REDACTED (CONFIDENTIAL INFORMATION REMOV...

AI summary The document outlines the removal of transmission cable, substations, and transformers by third parties during the general demolition process. It also mentions that HST is an additional cost to the estimated figures provided. The text includes a redacted section from a hydro asset study appendix, which discusses the historical context of utility operations in Nova Scotia.

ŶŐ͘ dŚĞƌĞŝƐĂŵƉůĞŵĂƚĞƌŝĂůůĂLJĚŽǁŶĂƌĞĂĂƚƐŝƚĞ͘ dŚĞƌĞŝƐĂŵƉůĞƌŽŽŵĂƚƚŚŝƐƐŝƚĞƚŽďƵƌLJƐƵŝƚĂďůĞĐŽŶĐƌĞƚĞĚĞďƌŝƐ͕ĚĞǀŽŝĚŽĨƌĞďĂƌ͕ĂŶĚĞŵďĞĚĚĞĚ ŵĞƚĂůƐ͘     ϯϭ     REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro A...

AI summary The text discusses the evaluation of hydro asset studies, including the assessment of asset retirement obligations, the impact of aging infrastructure, and the need for investment in maintenance and upgrades. It outlines key considerations for managing hydroelectric assets and their long-term sustainability.

ŝƐŵĂŶƚůĞ͕ ƚĞĂƌͲĚŽǁŶ ĞdžƚĞƌŝŽƌ ƌĞŝŶĨŽƌĐĞĚ ĐŽŶĐƌĞƚĞ ǁĂůůƐ ĂŶĚ ƌĞůĂƚĞĚ ĐŽŵƉŽŶĞŶƚƐ ĂŶĚ ƐƚŽĐŬƉŝůĞ ĚĞŵŽůŝƚŝŽŶŵĂƚĞƌŝĂůĨŽƌĚŝƐƉŽƐĂů͘ x ZĞŵŽǀĞ ĂŶĚ ĚĞŵŽůŝƐŚ ŵĂŝŶ ĨůŽŽƌ ƌĞŝŶĨŽƌĐĞĚ ĐŽŶĐƌĞƚĞ ƐůĂď Ăƚ ŐĞŶĞƌĂƚŽƌ ůĞǀĞů͘ ^ƚŽĐŬƉŝůĞ...

AI summary The text discusses the importance of asset retirement obligations, including the need for accurate accounting and the challenges related to managing and reporting these obligations. It also touches on the impact of these obligations on financial planning and regulatory processes.

 KƵƚĨůŽǁĨƌŽŵ,ŽůůŽǁƌŝĚŐĞĚƌĂĨƚͲƚƵďĞĞŶƚĞƌƐĂĐŽŶƐƚƌƵĐƚĞĚƚĂŝůƌĂĐĞĐŚĂŶŶĞůĂƉƉƌŽdžŝŵĂƚĞůLJϭϮϬϬ ĨĞĞƚůŽŶŐǁŚŝĐŚƚƌĂŶƐƉŽƌƚƐĨůŽǁƚŽ>ƵŵƐĚĞŶWŽŶĚǁŚĞƌĞǁĂƚĞƌŝƐƚŚĞŶĐĞĚŝƌĞĐƚĞĚƚŽƚŚĞ>ƵŵƐĚĞŶ ƉŽǁĞƌŚŽƵƐĞĨŽƌŐĞŶĞƌĂƚŝŽŶ͘dŚĂƚƚĂŝůƌĂĐĞĐŚĂŶ...

AI summary The document discusses the challenges related to asset retirement obligations and the need for accurate financial planning in the context of a hydro asset study. It highlights the importance of proper valuation and management of assets to ensure long-term sustainability and compliance with regulatory requirements.

ĂŶĚƌĞůĂƚĞĚĐŽŵƉŽŶĞŶƚƐ͕ƐƚŽĐŬƉŝůĞĚĞŵŽůŝƚŝŽŶŵĂƚĞƌŝĂůĨŽƌĚŝƐƉŽƐĂů͘ x ZĞŵŽǀĞĂŶĚĚĞŵŽůŝƐŚŵĂŝŶĨůŽŽƌƌĞŝŶĨŽƌĐĞĚĐŽŶĐƌĞƚĞƐůĂď͘^ƚŽĐŬƉŝůĞĚĞŵŽůŝƚŝŽŶŵĂƚĞƌŝĂůĨŽƌĚŝƐƉŽƐĂů͘ x ZĞŵŽǀĞĞdžƉŽƐĞĚŝŶƚĞƌŝŽƌƐƚĞĞůƉĞŶƐƚŽĐŬ͕ŵĂŝŶƉĞŶƐƚŽĐŬďƵƚƚĞ...

AI summary The text discusses topics related to energy efficiency, cost management, and regulatory considerations in the context of a regulatory proceeding. It highlights issues such as fuel cost adjustments, asset retirement obligations, and the impact of various programs on affordability and cost recovery.

ŝƐƐŝŽŶŝŶŐĞdžĞƌĐŝƐĞŝŶĐůƵĚĞďƵŝůĚŝŶŐĚĞŵŽůŝƚŝŽŶ ĂŶĚƌĞůĂƚĞĚŵĂƚĞƌŝĂůƐĚŝƐƉŽƐĂů͕ĂŶĚƐŝƚĞƉƌŽƚĞĐƚŝŽŶĂŶĚƌĞŵĞĚŝĂƚŝŽŶƉŽƐƚĚĞŵŽůŝƚŝŽŶ͘      ϯϱ     REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C P...

AI summary The document discusses the historical context and evaluation of a hydro asset study, including the evaluation of a hydroelectric facility's performance and its impact on energy production. It references the asset's operational history, its capacity, and its role in the energy system.

   ϯϲ     REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 43 of 143  EKs^Kd/WKt Z/E͘Ͳ,zZKWZKhd/KE ^/d  KDD/^^/KE/E' ^d/Dd ^hDDZz&KZ^^ dZ d/Z D EdK>/'d/KE^;ZKͿ^d...

AI summary The text discusses the evaluation of a hydro asset study, focusing on asset retirement obligations, the impact of energy efficiency programs, and the financial and operational considerations of utility companies. It highlights challenges related to infrastructure planning, cost recovery, and regulatory compliance.

dŚĞďƵůŬŽĨƚŚĞĐŽƐƚƐĂƐƐŽĐŝĂƚĞĚǁŝƚŚƚŚĞĚĞĐŽŵŵŝƐƐŝŽŶŝŶŐĞdžĞƌĐŝƐĞŝŶĐůƵĚĞďƵŝůĚŝŶŐĚĞŵŽůŝƚŝŽŶ ĂŶĚƌĞůĂƚĞĚŵĂƚĞƌŝĂůƐĚŝƐƉŽƐĂů͕ĂŶĚƐŝƚĞƉƌŽƚĞĐƚŝŽŶĂŶĚƌĞŵĞĚŝĂƚŝŽŶƉŽƐƚĚĞŵŽůŝƚŝŽŶ͘    ϰϮ     REDACTED (CONFIDENTIAL INFORMATION REMO...

AI summary The document provides an estimate summary for the decommissioning of the Black River Hydro Electric Generation System, including site remediation issues and associated costs such as site access removals and site services removals.

.00 Includes re-grading at site access roads. Site Services Removals $10,000.00 Includes removal of buried water and waste-water buried. BUILDINGS & STRUCTURES Includes roof structure removal, removal of superstructure Powerhouse & Related...

AI summary The text outlines costs associated with site services removals and the demolition of powerhouses and related structures, including re-grading of access roads, removal of buried utilities, and partial demolition of infrastructure with off-site disposal costs.

e) -$600.00 Allowance General Parts -$1,000.00 Allowance Insulated Wire and Cables No. 1 -$1,000.00 Allowance Insulated Wire and Cables No. 2 -$1,000.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $68,172.00...

AI summary The text outlines various allowances and costs related to a site decommissioning estimate, including specific line items such as engineering and project management fees. It also notes that HST is an additional cost not included in the stated estimates.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 50 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Black River Hydro Electr...

AI summary The document outlines the estimated costs for decommissioning the Black River Hydro Electric Generation System as part of an asset retirement obligations (ARO) study. It includes site remediation, building removal, and associated costs.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text discusses the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

e) -$500.00 Allowance General Parts -$1,000.00 Allowance Insulated Wire and Cables No. 1 -$1,000.00 Allowance Insulated Wire and Cables No. 2 -$1,000.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $57,762.00...

AI summary The text provides a breakdown of costs associated with site decommissioning, including allowances for various components and engineering and project management expenses. It also includes a note about the removal of transmission infrastructure and the addition of HST to estimated costs.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 51 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Black River Hydro Electr...

AI summary This document provides an estimate of decommissioning costs for the Black River Hydro Electric Generation System under the ARO Study. It outlines costs for site remediations, building removals, and other related activities, with specific assumptions and notes for each item.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text discusses the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

Auxiliary Buildings Removals (not associated with Production Plant) $0.00 No miscellaneous auxilliary structures at this site BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo G...

AI summary The text outlines the costs and allowances associated with the removal and decommissioning of various infrastructure components at a site, including boilers, turbines, electrical systems, and auxiliary equipment, along with administrative and overhead expenses, and salvage allowances.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 52 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Black River Hydro Electr...

AI summary This document provides an estimate of decommissioning costs for the Black River Hydro Electric Generation System under the Hell's Gate Development as part of an ARO study. It outlines costs related to site remediation, access removals, and the removal of buildings and structures.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text discusses the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

Auxiliary Buildings Removals (not associated with Production Plant) $8,000.00 Auxilliary structures at this site. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Rem...

AI summary The document outlines the costs associated with the removal of various structures and equipment at a site, including auxiliary buildings, boilers, turbo-generators, electrical systems, and other infrastructure. It also includes allowances for salvageable materials such as scrap metals and insulated wire.

-$1,000.00 Allowance General Parts -$2,000.00 Allowance Insulated Wire and Cables No. 1 -$1,800.00 Allowance Insulated Wire and Cables No. 2 -$1,800.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $100,470.00...

AI summary The document includes a detailed breakdown of costs related to site decommissioning, specifically for the Hell's Gate Development, with a subtotal of $1,024,892.00. Notes indicate that transmission cable, substations, and transformers will be removed by others, and HST is an additional cost.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 53 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Black River Hydro Electr...

AI summary This document outlines the estimated decommissioning costs for the Black River Hydro Electric Generation System as part of an Asset Retirement Obligations (ARO) study. It includes costs for site remediation, site access removals, site services removals, and the removal of buildings and structures.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text discusses the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

Auxiliary Buildings Removals (not associated with Production Plant) $8,000.00 No miscellaneous auxilliary structures at this site BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Tur...

AI summary The text outlines various costs associated with the removal of equipment and structures at a site, including auxiliary buildings, boilers, turbines, electrical systems, and common services. It also includes allowances for salvage materials such as scrap metals and insulated wire.

-$1,000.00 Allowance General Parts -$2,000.00 Allowance Insulated Wire and Cables No. 1 -$1,800.00 Allowance Insulated Wire and Cables No. 2 -$1,800.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $100,470.00...

AI summary The text includes a list of allowances and costs related to engineering and project management, with a subtotal for site decommissioning at White Rock Development. It also includes notes about the removal of transmission infrastructure and the inclusion of HST as an additional cost.

ůĂƚĞĚ ĐŽŵƉŽŶĞŶƚƐ͕ ƐƚŽĐŬƉŝůĞ ĚĞŵŽůŝƚŝŽŶ ŵĂƚĞƌŝĂů ĨŽƌ ĚŝƐƉŽƐĂů͘ x ZĞŵŽǀĞĂŶĚĚĞŵŽůŝƐŚŵĂŝŶĨůŽŽƌƌĞŝŶĨŽƌĐĞĚĐŽŶĐƌĞƚĞƐůĂďĂŶĚƌĞůĂƚĞĚƌĞŝŶĨŽƌĐĞĚĐŽŶĐƌĞƚĞƐƵďƐƚƌƵĐƚƵƌĞ͘ ^ƚŽĐŬƉŝůĞĚĞŵŽůŝƚŝŽŶŵĂƚĞƌŝĂůĨŽƌĚŝƐƉŽƐĂů͘dŚŝƐƉŽǁĞƌŚŽƵƐĞŽƵƚ...

AI summary The text discusses various aspects of utility regulation, including accounting policies, cost recovery, and the management of asset retirement obligations. It also touches on energy efficiency programs, stakeholder engagement, and regulatory processes such as prudence reviews and compliance with legislation.

Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Dickie Brook Hydro Electric Generation System Dickie Brook Development Estimated Item Description Decommissioning Assumpt...

AI summary This document provides an estimate summary for the decommissioning of the Dickie Brook Hydro Electric Generation System, focusing on site remediations, site access removals, and building structures removals, including associated costs and assumptions.

& Related Auxiliary Structures Removals $167,950.00 walls, partial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text outlines the costs associated with the removal of related auxiliary structures, including partial removal of sub-structure, infilling of the powerhouse, and off-site disposal costs estimated at $167,950.00.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text discusses the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

) -$250.00 Allowance General Parts -$800.00 Allowance Insulated Wire and Cables No. 1 -$800.00 Allowance Insulated Wire and Cables No. 2 -$800.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $74,706.00 Site D...

AI summary The text presents a list of allowances and costs related to site decommissioning, including specific line items and a subtotal for the Dickie Brook Development. It also includes notes about the removal of transmission infrastructure and the addition of HST to the estimated costs.

ĨŽƌďƵƌLJŝŶŐĚĞŵŽůŝƚŝŽŶŐĞŶĞƌĂƚĞĚĚĞďƌŝƐ͘ &ŽůůŽǁŝŶŐĚĞŵŽůŝƚŝŽŶƉůĂŶŶŝŶŐĐĂƚĞŐŽƌŝnjĂƚŝŽŶƐĂƉƉůLJƚŽƚŚĞ&ĂůůZŝǀĞƌĨĂĐŝůŝƚLJ͗ x /ŶƚĂŬĞůĂƐƐŝĨŝĐĂƚŝŽŶͲĂƚĞŐŽƌLJ͕ĂďƵƌŝĞĚ&ZWŝŶƚĂŬĞƉŝƉĞŝƐůŽĐĂƚĞĚĂƚƚŚĞƌĞĂƌŽĨƚŚĞƐƚƌƵĐƚƵƌĞ͖ x ƌĐŚŝƚĞ...

AI summary The text discusses various aspects of energy regulation and management, including topics such as asset retirement obligations, fuel-cost-adjustment mechanisms, and the impact of different programs on energy efficiency and affordability. It also highlights the importance of stakeholder engagement and regulatory compliance.

ĐĞĚĐŽŶĐƌĞƚĞƐƵďƐƚƌƵĐƚƵƌĞ͘ ^ƚŽĐŬƉŝůĞĚĞŵŽůŝƚŝŽŶŵĂƚĞƌŝĂůĨŽƌĚŝƐƉŽƐĂů͘ x ZĞŵŽǀĞďƵƌŝĞĚƐĞƌǀŝĐĞƐĂŶĚĂŶLJĨƌĞƐŚǁĂƚĞƌƉŝƉŝŶŐĂŶĚĞƋƵŝƉŵĞŶƚ͘ x ŝƐƉŽƐĂůŽĨĐŽŶƐƚƌƵĐƚŝŽŶĂŶĚĚĞŵŽůŝƚŝŽŶĚĞďƌŝƐʹƚƌƵĐŬƚŽĂĐŽŶƐƚƌƵĐƚŝŽŶĚĞďƌŝƐĚŝƐƉŽƐĂůĨĂĐŝůŝ...

AI summary The text discusses the management of asset retirement obligations and the challenges related to the accurate tracking and reporting of asset retirements. It highlights the importance of ensuring that asset retirement obligations are properly accounted for to avoid financial and operational misstatements.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 60 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Fall River Hydro Electri...

AI summary This document provides a summary of estimated decommissioning costs for the Fall River Hydro Electric Generation System as part of the Asset Retirement Obligations (ARO) study. It includes site remediation, site access removals, and building and structure removals.

Auxiliary Buildings Removals (not associated with Production Plant) $6,500.00 Remove office building in this location. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generato...

AI summary The text outlines various costs and allowances associated with the removal of infrastructure and equipment from a power site, including buildings, generators, electrical systems, and other auxiliary equipment, as well as salvage allowances for scrap metals and parts.

-$150.00 Allowance General Parts -$750.00 Allowance Insulated Wire and Cables No. 1 -$750.00 Allowance Insulated Wire and Cables No. 2 -$750.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $38,094.00 Site Dec...

AI summary The text includes a list of allowances and costs related to engineering and project management, specifically for site decommissioning in Fall River Development, with a subtotal of $388,698.40. Notes mention the removal of transmission cables and substations by others and the additional cost of HST.

KE/E' ^d/Dd ^hDDZz&KZ^^ dZ d/Z D EdK>/'d/KE^;ZKͿ^dhz;LJ^LJƐƚĞŵͿ   ϲ͘ >ĞƋƵŝůůĞ,LJĚƌŽ ůĞĐƚƌŝĐ^LJƐƚĞŵ ĞƋƵŝůůĞ ĞǀĞůŽƉŵĞŶƚ ŝƐ ŽŶĞ ŽĨ ƚŚƌĞĞ ĐŽŶǀĞŶƚŝŽŶĂů ƐƚĂŶĚͲĂůŽŶĞ ŚLJĚƌŽͲĞůĞĐƚƌŝĐ ĚĞǀĞůŽƉŵĞŶƚƐ ƚŚĂƚ ĚŝƐĐŚĂƌŐĞ ǁĂ...

AI summary The document discusses the historical context and evolution of asset retirement obligations in Nova Scotia, referencing past proceedings from the 1950s and 1960s. It mentions the role of the Nova Scotia Power and the regulatory processes involved in managing these obligations.

ƉŽǁĞƌŚŽƵƐĞƐƚƌƵĐƚƵƌĞŝƐĚĞƐŝŐŶĞĚƚŽĂƉƉĞĂƌƚŽďĞĂƐƉĞƌŝŽĚŵĂƐŽŶƌLJĐŽŶƐƚƌƵĐƚŝŽŶ͕ ŝƚŝƐŝŶĨĂĐƚĂŵŽĚĞƌŶƌĞŝŶĨŽƌĐĞĚĐŽŶĐƌĞƚĞŝŶƐƚĂůůĂƚŝŽŶ͘      ϱϱ     REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Append...

AI summary The text discusses a hydro asset study appendix, focusing on the evaluation of a hydroelectric project's environmental and financial aspects. It outlines key considerations such as environmental impact assessments, cost-benefit analyses, and regulatory compliance.

Dd ^hDDZz&KZ^^ dZ d/Z D EdK>/'d/KE^;ZKͿ^dhz;LJ^LJƐƚĞŵͿ   x /ŶĨŝůůĨŽƵŶĚĂƚŝŽŶƐƵďƐƚƌƵĐƚƵƌĞĞdžĐĂǀĂƚŝŽŶǁŝƚŚĐŽŵƉĂĐƚĞĚŐƌĂŶƵůĂƌŵĂƚĞƌŝĂůĂŶĚƐĞůĞĐƚĞĚĐůĞĂŶĚĞŵŽůŝƚŝŽŶ ĚĞďƌŝƐƚŽƚŚĞĞdžŝƐƚŝŶŐƚĂŝůƌĂĐĞĐŽĨĨĞƌĚĂŵƐƚƌƵĐƚƵƌĞ͘dŚ...

AI summary The text discusses the importance of proper accounting and financial management in utility regulation, emphasizing the need for accurate cost recovery, asset retirement obligations, and the impact of various regulatory mechanisms on utility operations and customer affordability.

ƚŝŽŶ ĂŶĚ ƌĞůĂƚĞĚ ŵĂƚĞƌŝĂůƐ ĚŝƐƉŽƐĂů͕ ĂŶĚ ƐŝƚĞ ƉƌŽƚĞĐƚŝŽŶ ĂŶĚ ƌĞŵĞĚŝĂƚŝŽŶ ƉŽƐƚ ĚĞŵŽůŝƚŝŽŶ͘  dŚĞƌĞ ŝƐ ĐŽŶƐŝĚĞƌĂďůĞĐŽƐƚŝŶĐŽŶĐƌĞƚŝŶŐƚŚĞƚĂŝůƌĂĐĞĐŚĂŶŶĞů͘    ϱϳ     REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTE...

AI summary The text discusses the management of asset retirement obligations and the impact of deferred costs on financial reporting, highlighting the need for accurate accounting policies and cost recovery mechanisms in utility regulation.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 64 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Lequille Hydro Electric...

AI summary This document provides an estimate of decommissioning costs for the Lequille Hydro Electric Generation System as part of the Asset Retirement Obligations (ARO) Study. The costs include site remediation, site access removals, site services removals, and the removal of buildings and structures.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text discusses the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

nc. Turbine) -$500.00 Allowance General Parts -$1,000.00 Allowance Insulated Wire and Cables No. 1 -$1,000.00 Allowance Insulated Wire and Cables No. 2 -$1,000.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management...

AI summary The text provides a detailed breakdown of costs associated with the decommissioning of a turbine and related infrastructure, including allowances for general parts, insulated wire, and engineering and project management fees. It also includes a subtotal for site decommissioning and notes about the removal of transmission cables and substations.

 hƉƉĞƌ>ĂŬĞ&ĂůůƐĞǀĞůŽƉŵĞŶƚ ƚ ƚŚĞ hƉƉĞƌ >ĂŬĞ &ĂůůƐ ĞǀĞůŽƉŵĞŶƚ ;DĞƌƐĞLJ EŽ͘ ϭ ĂŶĚ ϮͿ͕ ĐŽŵƉůĞƚĞĚ ŝŶ ĂďŽƵƚϭϵϮϵ͕ŝŶĨůŽǁĨƌŽŵ>ĂŬĞZŽƐƐŝŐŶŽů ŝƐ ĐŚĂŶŶĞůůĞĚ ƚŚƌŽƵŐŚ ƚŚĞ ŝŶƚĞŐƌĂů ƉŽǁĞƌŚŽƵƐĞ ŐĂƚĞĚ ŝŶƚĂŬĞ ƐƚƌƵĐƚƵƌĞ ĂŶĚ...

AI summary The document discusses a regulatory proceeding related to the Nova Scotia Power (NSP) and the Asset Retirement Obligations (ARO) in the context of a hydro asset study. It outlines the need for a comprehensive review and analysis of the ARO and its implications for the utility sector.

ƐƵďƐƚƌƵĐƚƵƌĞ͘^ƚŽĐŬƉŝůĞĚĞďƌŝƐĨŽƌĚŝƐƉŽƐĂů͘ x ZĞŵŽǀĞ ďƵƌŝĞĚ ƐĞƌǀŝĐĞƐ ŝŶĐůƵĚŝŶŐ ƚŚĞ ŽŶͲƐŝƚĞ ƐĞǁĂŐĞ ĚŝƐƉŽƐĂů ƐLJƐƚĞŵ͕ ƐĂŶŝƚĂƌLJ ƉƵŵƉƐ ĂŶĚ ƉŝƉŝŶŐ͕ ĂŶLJ ĨƌĞƐŚǁĂƚĞƌƉŝƉŝŶŐĂŶĚĞƋƵŝƉŵĞŶƚ͘    ϲϯ     REDACTED (CONFIDENTIAL I...

AI summary The text discusses the management of asset retirement obligations and the impact of various financial and operational factors on the utility sector, including cost recovery and depreciation amortization. It also touches on the importance of regulatory oversight in ensuring compliance and transparency.

Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Mersey Hydro Electric Generation System Upper Lake Falls Development Estimated Item Description Decommissioning Assumptio...

AI summary The document provides an estimate summary for the decommissioning of the Mersey Hydro Electric Generation System's Upper Lake Falls Development, detailing costs for site remediation, site access removals, site services removals, and the removal of buildings and structures, including the powerhouse and related auxiliary structures.

Auxiliary Buildings Removals (not associated with Production Plant) $0.00 N/A BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Removals $58,100.00 Two vertical turbo-...

AI summary The text outlines various costs and allowances associated with the removal and decommissioning of equipment and facilities, including turbo-generators, electrical systems, and auxiliary equipment, with specific figures and descriptions for each item.

-$400.00 Allowance General Parts -$2,400.00 Allowance Insulated Wire and Cables No. 1 -$2,400.00 Allowance Insulated Wire and Cables No. 2 -$2,400.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $146,712.00 S...

AI summary The text outlines various allowances and costs associated with a site decommissioning estimate, including specific line items and a subtotal for the Upper Lake Falls Development. It also notes that HST is additional to the stated costs and includes a redacted section indicating confidential information.

Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Mersey River Hydro Electric Generation System Lower Lake Falls Development Estimated Item Description Decommissioning Ass...

AI summary This document provides an estimate summary for the decommissioning of the Mersey River Hydro Electric Generation System, including costs for site remediation, site access removals, site services removals, and the removal of buildings and structures such as the powerhouse and related auxiliary structures.

Auxiliary Buildings Removals (not associated with Production Plant) $0.00 N/A BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Removals $58,100.00 Two vertical turbo-...

AI summary The document outlines the costs and allowances associated with the removal and decommissioning of various facilities and equipment, including turbo-generators, electrical systems, and building infrastructure, with specific line items detailing expenses and salvage allowances.

-$400.00 Allowance General Parts -$2,400.00 Allowance Insulated Wire and Cables No. 1 -$2,400.00 Allowance Insulated Wire and Cables No. 2 -$2,400.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $130,152.00 S...

AI summary The text provides a breakdown of costs associated with site decommissioning at the Lower Lake Falls Development, including allowances for various materials and engineering management fees. It also includes notes about HST being an additional cost and mentions that some information has been redacted.

Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Mersey River Hydro Electric Generation System Big Falls Development Estimated Item Description Decommissioning Assumption...

AI summary The document provides an estimate of decommissioning costs for the Mersey River Hydro Electric Generation System, including site remediation, site access removals, site services removals, and the removal of powerhouses and related structures.

Auxiliary Buildings Removals (not associated with Production Plant) $5,000.00 Remove auxilliary buildings. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Removals $...

AI summary The text outlines various costs associated with the removal and decommissioning of infrastructure and equipment at a power site, including auxiliary buildings, boilers, turbines, generators, electrical systems, and general facilities. It also includes allowances for salvage value of scrap metals and parts.

(Inc. Turbine) -$400.00 Allowance General Parts -$2,400.00 Allowance Insulated Wire and Cables No. 1 -$2,400.00 Allowance Insulated Wire and Cables No. 2 -$2,400.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Managemen...

AI summary The text presents a decommissioning estimate for a site, including costs for turbine components, general parts, and engineering management, with a subtotal of $1,558,888.00. Notes mention that transmission cable and substations will be removed by others, and HST is an additional cost.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 84 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Mersey River Hydro Elect...

AI summary This document provides an estimate of decommissioning costs for the Lower Great Brook Development site as part of the Mersey River Hydro Electric Generation System. It includes costs for site remediation, site access removals, and the removal of powerhouses and related structures.

Auxiliary Buildings Removals (not associated with Production Plant) $0.00 No auxilliary buildings at this location. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator R...

AI summary The document outlines the costs and removals associated with decommissioning various components of a power facility, including turbo-generators, electrical systems, and auxiliary equipment, along with salvage allowances and administrative expenses.

als - General (Inc. Turbine) -$400.00 Allowance General Parts -$2,000.00 Allowance Insulated Wire and Cables No. 1 -$2,000.00 Allowance Insulated Wire and Cables No. 2 -$2,000.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Pro...

AI summary The text provides a breakdown of costs associated with site decommissioning, including allowances for various materials and engineering management fees, with a subtotal for the Lower Great Brook Development. It also notes that HST is an additional cost not included in the estimated figures.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 85 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Mersey River Hydro Elect...

AI summary The document outlines the estimated costs for decommissioning the Deep Brook Development site as part of the Mersey River Hydro Electric Generation System ARO study. It includes site remediation, site access removals, and the removal of buildings and structures.

Turbine) -$400.00 Allowance General Parts -$2,400.00 Allowance Insulated Wire and Cables No. 1 -$2,400.00 Allowance Insulated Wire and Cables No. 2 -$2,400.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $208...

AI summary The text presents a decommissioning cost estimate for a turbine and related infrastructure, including allowances for various components and a subtotal for the Deep Brook Development site. It notes that HST is additional to the estimated costs.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 86 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Mersey River Hydro Elect...

AI summary The document provides a summary of estimated decommissioning costs for the Cowie Falls Development under the Mersey River Hydro Electric Generation System as part of the ARO Study. It outlines costs related to site remediation, site access removals, and the removal of powerhouses and related structures.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text discusses the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

Auxiliary Buildings Removals (not associated with Production Plant) $0.00 No auxilliary buildings at this location. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator R...

AI summary The text outlines the costs associated with the removal and decommissioning of various electrical and mechanical systems at a site, including turbo-generators, distribution lines, and auxiliary equipment, with some allowances for salvage value.

als - General (Inc. Turbine) -$400.00 Allowance General Parts -$2,400.00 Allowance Insulated Wire and Cables No. 1 -$2,400.00 Allowance Insulated Wire and Cables No. 2 -$2,400.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Pro...

AI summary The text includes a list of allowances and costs related to site decommissioning, specifically for the Cowie Falls Development, with a subtotal of $1,618,024.00. Notes mention the removal of transmission cable, substations, and transformers by others and that HST is an additional cost.

Dd ^hDDZz&KZ^^ dZ d/Z D EdK>/'d/KE^;ZKͿ^dhz;LJ^LJƐƚĞŵͿ   ϴ͘ EŝĐƚĂƵdž,LJĚƌŽ ůĞĐƚƌŝĐ^LJƐƚĞŵ EŝĐƚĂƵdž ĞǀĞůŽƉŵĞŶƚ ŝƐ ŽŶĞ ŽĨ ƚŚƌĞĞ ĐŽŶǀĞŶƚŝŽŶĂů ƐƚĂŶĚͲĂůŽŶĞ ŚLJĚƌŽͲĞůĞĐƚƌŝĐ ĚĞǀĞůŽƉŵĞŶƚƐ ƚŚĂƚ ĚŝƐĐŚĂƌŐĞ ǁĂƚĞƌ ĨƌŽŵ...

AI summary The document discusses the implementation of the 1950s and 1960s regulations related to asset retirement obligations and the role of Nova Scotia Power in managing these obligations. It also references past regulatory proceedings and their impact on current practices.

ĞƚŽďƵƌLJĐŽŶĐƌĞƚĞĚĞďƌŝƐ͘ &ŽůůŽǁŝŶŐĚĞŵŽůŝƚŝŽŶƉůĂŶŶŝŶŐĐĂƚĞŐŽƌŝnjĂƚŝŽŶƐĂƉƉůLJƚŽƚŚĞEŝĐƚĂƵdžĨĂĐŝůŝƚLJ͗ x /ŶƚĂŬĞůĂƐƐŝĨŝĐĂƚŝŽŶͲĂƚĞŐŽƌLJ͕ƉĞŶƐƚŽĐŬƉŝƉĞŝƐďƵƌŝĞĚďĞůŽǁŐƌŽƵŶĚ͖    ϴϭ     REDACTED (CONFIDENTIAL INFORMATION RE...

AI summary The document discusses various aspects of regulatory proceedings, including topics such as asset retirement obligations, hydro asset studies, and the impact of regulatory decisions on utility operations and customer affordability. It outlines key considerations for managing energy resources and regulatory compliance.

ƐĂůǀĂŐĞĂŶĚĚŝƐƉŽƐĂůŽƌƌĞŵŽǀĞĚŝƌĞĐƚůLJĨƌŽŵƐŝƚĞ͘ x ŝƐŵĂŶƚůĞĞdžƚĞƌŝŽƌǁĂůůƐĂŶĚƌĞůĂƚĞĚĐŽŵƉŽŶĞŶƚƐ͕ƐƚŽĐŬƉŝůĞĚĞŵŽůŝƚŝŽŶŵĂƚĞƌŝĂůĨŽƌĚŝƐƉŽƐĂůŽƌƌĞŵŽǀĞ ĚŝƌĞĐƚůLJĨƌŽŵƐŝƚĞ͘ x ZĞŵŽǀĞĂŶĚĚĞŵŽůŝƐŚŵĂŝŶĨůŽŽƌƌĞŝŶĨŽƌĐĞĚĐŽŶĐƌĞƚĞƐůĂď͘...

AI summary The text discusses the evaluation of asset retirement obligations, fuel cost adjustments, and the impact of various regulatory mechanisms on utility operations. It highlights concerns regarding the alignment of base rates with actual costs, and the importance of accurate forecasting and cost recovery mechanisms.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 90 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Nictaux River Hydro Elec...

AI summary This document provides an estimate of decommissioning costs for the Nictaux River Hydro Electric Generation System, including site remediation, access road removal, and powerhouse structure removal, with associated assumptions and notes.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text mentions the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

ine) -$500.00 Allowance General Parts -$1,000.00 Allowance Insulated Wire and Cables No. 1 -$1,000.00 Allowance Insulated Wire and Cables No. 2 -$1,000.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $65,622....

AI summary The text outlines various allowances and costs associated with site decommissioning, including specific line items for engineering and project management, as well as a subtotal for the Nictaux Development. Notes mention the removal of transmission cable and related equipment by others and the inclusion of HST as an additional cost.

x /ŶƚĂŬĞůĂƐƐŝĨŝĐĂƚŝŽŶͲĂƚĞŐŽƌLJ͕ƉĞŶƐƚŽĐŬƉŝƉĞŝƐďƵƌŝĞĚďĞůŽǁŐƌŽƵŶĚ͖ x ƌĐŚŝƚĞĐƚƵƌĂůůĂƐƐŝĨŝĐĂƚŝŽŶʹĂƚĞŐŽƌLJ͕ZĞŝŶĨŽƌĐĞĚĐŽŶĐƌĞƚĞĂŶĚƐƚƌƵĐƚƵƌĂůƐƚĞĞů͖ x KƵƚůĞƚ ;ƌĂĨƚͲƚƵďĞͿ ůĂƐƐŝĨŝĐĂƚŝŽŶ ʹ ĂƚĞŐŽƌLJ ͕ Ă ůĞŶŐƚŚLJ ƚĂ...

AI summary The document outlines various regulatory considerations and issues related to energy management, including asset retirement obligations, fuel cost adjustments, and the impact of regulatory decisions on utility operations. It also discusses the need for comprehensive planning and stakeholder engagement in energy policy.

ŐƚĂŝůƌĂĐĞǁŝƚŚĐůĞĂŶŐƌĂǀĞůĂŶĚĐƌƵƐŚĞĚƐƚŽŶĞ͕ĂƐǁĞůů ĂƐĐůĞĂŶĨŝůůĂƐƌĞƋƵŝƌĞĚ͘'ƌĂĚĞƐƵƌĨĂĐĞƐ͕ŚLJĚƌŽͲƐĞĞĚĂŶĚͬƉůĂŶƚƚƌĞĞƐŽƌŽƚŚĞƌǀĞŐĞƚĂƚŝŽŶƚŽƌĞƚƵƌŶƚŚŝƐĂƌĞĂ ƚŽĂŶĞĂƌŶĂƚƵƌĂůƐƚĂƚĞ͘    ϴϲ     REDACTED (CONFIDENTIAL INFO...

AI summary The text discusses the management of asset retirement obligations and the impact of various financial and regulatory mechanisms on utility operations, including the evaluation of costs, revenue requirements, and the role of regulatory oversight in ensuring compliance and efficiency.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 94 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Paradise Hydro Electric...

AI summary This document provides an estimate of decommissioning costs for the Paradise Hydro Electric Generation System, including site remediation, building removal, and infrastructure decommissioning. The costs are based on specific assumptions and notes related to the scope of work.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text mentions the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

Auxiliary Buildings Removals (not associated with Production Plant) $5,000.00 Auxilliary structures at this site. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Rem...

AI summary The text outlines various costs associated with the removal and decommissioning of equipment and structures at a site, including auxiliary buildings, boilers, turbines, electrical systems, and common services. It also includes allowances for salvage value of scrap metals and parts.

-$500.00 Allowance General Parts -$1,000.00 Allowance Insulated Wire and Cables No. 1 -$1,000.00 Allowance Insulated Wire and Cables No. 2 -$1,000.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $78,366.00 Si...

AI summary The text includes various cost allowances for engineering and project management, with a focus on site decommissioning estimates, particularly for the Paradise Development project. Notes mention the removal of transmission infrastructure and the inclusion of HST as an additional cost.

ŝŽŶƚŽƚŚĞ ŽƌŝŐŝŶĂůZŽƐĞǁĂLJZŝǀĞƌĂůŝŐŶŵĞŶƚ͘ dŚĞƌĞĨŽƌĞ ƚŚĞ ĨŽůůŽǁŝŶŐ ƚĂƐŬƐ ŚĂǀĞ ďĞĞŶ ĐŽŶƐŝĚĞƌĞĚ ŝŶ ƚŚĞ ĚĞŵŽůŝƚŝŽŶ ƉůĂŶŶŝŶŐ ĂŶĚ ĐŽƐƚƐ ĚĞƌŝǀĂƚŝŽŶĞdžĞƌĐŝƐĞ͗    ϴϵ     REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTE...

AI summary The text discusses a confidential hydro asset study appendix, focusing on the evaluation of asset retirement obligations and related financial considerations. It involves technical and regulatory analysis related to asset management and financial planning.

Ŷ ǁŝƚŚ ĐŽŵƉĂĐƚĞĚ ŐƌĂŶƵůĂƌ ŵĂƚĞƌŝĂů ĂŶĚ ƐĞůĞĐƚĞĚ ĚĞŵŽůŝƚŝŽŶ ĚĞďƌŝƐƚŽƚŚĞƚĂŝůƌĂĐĞĐŽĨĨĞƌĚĂŵ͘dŚĞĐŽĨĨĞƌĚĂŵĐĂŶƌĞŵĂŝŶŽŶĐĞŐƌĂĚĞĚƚŽŵĂƚĐŚƐŝƚĞ͘WƌŽǀŝĚĞĞƌŽƐŝŽŶ ƉƌŽƚĞĐƚŝŽŶĂƐƌĞƋƵŝƌĞĚ͘    ϵϬ     REDACTED (CONFIDENTIAL INF...

AI summary The text discusses the challenges in managing and maintaining hydro assets, including the need for regular maintenance, cost considerations, and the impact of environmental factors on asset performance. It highlights the importance of efficient resource allocation and the potential consequences of neglecting maintenance.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 98 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Roseway River Hydro Elec...

AI summary This document provides an estimate of decommissioning costs for the Roseway River Hydro Electric Generation System, including site remediation, building removal, and associated expenses, as part of an ARO study conducted by Nova Scotia Power.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text discusses the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

-$200.00 Allowance General Parts -$850.00 Allowance Insulated Wire and Cables No. 1 -$850.00 Allowance Insulated Wire and Cables No. 2 -$850.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $63,426.00 Site Dec...

AI summary The text presents a site decommissioning estimate subtotal for the Roseway Development, amounting to $648,423.60. It includes notes about the removal of transmission cables, substations, and transformers by others prior to general demolition, and mentions that HST is additional to the stated costs. The document is part of a redacted hydro asset study appendix.

' ^d/Dd ^hDDZz&KZ^^ dZ d/Z D EdK>/'d/KE^;ZKͿ^dhz;LJ^LJƐƚĞŵͿ   ϭϭ͘ ^ŚĞĞƚ,ĂƌďŽƵƌ,LJĚƌŽ ůĞĐƚƌŝĐ^LJƐƚĞŵ dŚĞ ^ŚĞĞƚ ,ĂƌďŽƵƌ ,LJĚƌŽ ůĞĐƚƌŝĐ ^LJƐƚĞŵ ĐŽŶƐŝƐƚƐ ŽĨ ƚǁŽ ŚLJĚƌŽͲĞůĞĐƚƌŝĐ ĚĞǀĞůŽƉŵĞŶƚƐ ĂŶĚ ƚǁŽ ƉŽǁĞƌŚŽƵƐĞƐ͘...

AI summary The document discusses the Nova Scotia Power's (NSP) approach to asset retirement obligations (ARO) and the management of these obligations, including historical context from the 1960s and 1970s, and references to regulatory frameworks and practices.

Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Sheet Harbour Hydro Electric Generation System Malay Falls Development Estimated Item Description Decommissioning Assumpt...

AI summary The document provides an estimate summary for the decommissioning of the Sheet Harbour Hydro Electric Generation System, including site remediation, access removals, and services removals, with associated costs and assumptions.

this location. BUILDINGS & STRUCTURES Includes roof structure removal, removal of superstructure walls, partial removal of sub-structure; infilling of the Powerhouse & Related Auxiliary Structures Removals $397,500.00 powerhouse and an est...

AI summary The text outlines the cost associated with the removal of powerhouses and related auxiliary structures, including roof structure removal, superstructure walls, partial sub-structure removal, infilling of the powerhouse, and off-site disposal costs, totaling $397,500.00. The turbine floor at this location is submerged in the intake chamber.

n estimate of off-site disposal costs. Turbine floor at this location is submerged in intake chamber.

AI summary The text mentions an estimate of off-site disposal costs and notes that the turbine floor at a specific location is submerged in an intake chamber. These details relate to infrastructure and environmental considerations.

Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Sheet Harbour Hydro Electric Generation System Ruth Falls Development Estimated Item Description Decommissioning Assumpti...

AI summary The document outlines the estimated decommissioning costs for the Sheet Harbour Hydro Electric Generation System, including site remediation, access removals, and building structures, with specific cost figures and assumptions provided for each item.

location. BUILDINGS & STRUCTURES Includes roof structure removal, removal of superstructure walls, partial removal of sub-structure; infilling of the Powerhouse & Related Auxiliary Structures Removals $402,000.00 powerhouse and an estimate...

AI summary The text outlines the costs associated with the removal of buildings and structures, including the Powerhouse and related auxiliary structures, with a total cost estimate of $402,000.00. It includes removal of roof structures, superstructure walls, partial sub-structure removal, infilling of the powerhouse, and off-site disposal costs.

e and an estimate of off-site disposal costs. Separate Generator and Turbine floors at this location.

AI summary The text mentions the need for an estimate of off-site disposal costs and the presence of separate Generator and Turbine floors at a specific location.

Auxiliary Buildings Removals (not associated with Production Plant) $1,500.00 Shed removal. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Removals $89,000.00 Three...

AI summary The document outlines the costs associated with the removal of various equipment and systems from a facility, including boilers, turbo-generators, electrical systems, and auxiliary equipment, along with estimated administrative expenses and salvage allowances.

e) -$800.00 Allowance General Parts -$3,500.00 Allowance Insulated Wire and Cables No. 1 -$2,500.00 Allowance Insulated Wire and Cables No. 2 -$2,500.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $114,384.0...

AI summary The text provides a breakdown of costs associated with site decommissioning, including allowances for general parts, insulated wire and cables, and engineering and project management fees. The subtotal for the Ruth Falls Development is listed as $1,165,042.40, with notes on transmission cable removal and HST being additional.

ŵŽƌĞ ůĂLJĚŽǁŶĂƌĞĂŝƐŶĞĞĚĞĚ͕ƐƵĐŚƐƉĂĐĞĐĂŶďĞĐůĞĂƌĞĚŽĨǀĞŐĞƚĂƚŝŽŶĂŶĚĐŽŶƐƚƌƵĐƚĞĚ͘ &ŽůůŽǁŝŶŐĚĞŵŽůŝƚŝŽŶƉůĂŶŶŝŶŐĐĂƚĞŐŽƌŝnjĂƚŝŽŶƐĂƉƉůLJƚŽƚŚĞ&ŽƵƌƚŚ>ĂŬĞĨĂĐŝůŝƚLJ͗ x /ŶƚĂŬĞůĂƐƐŝĨŝĐĂƚŝŽŶͲĂƚĞŐŽƌLJ͕ďƵƌŝĞĚƉĞŶƐƚŽĐŬ͖ x ƌĐŚŝƚĞĐƚ...

AI summary The text discusses the analysis of a regulatory proceeding document, including topics related to asset retirement obligations, stakeholder engagement, and regulatory processes. It outlines various aspects of the proceedings and provides context on the topics being discussed.

ŝŽŶ ŵĂƚĞƌŝĂů ĨŽƌ ĚŝƐƉŽƐĂů͘  dŚŝƐ ƉŽǁĞƌŚŽƵƐĞ ǁŝůů ƉƌŽďĂďůLJ ďĞ ůŽĐĂƚĞĚ ͞ŝŶͲƐƚƌĞĂŵ͟ ƵƉŽŶ ƌĞŵŽǀĂů ŽĨ ƐŝƚĞ ŝŶĨƌĂƐƚƌƵĐƚƵƌĞ͘ x ZĞŵŽǀĞ ĂŶĚ ĚĞŵŽůŝƐŚ ŵĂŝŶ ĨůŽŽƌ ƌĞŝŶĨŽƌĐĞĚ ĐŽŶĐƌĞƚĞ ƐůĂď ĂŶĚ ƌĞůĂƚĞĚ ŵŝƐĐĞůůĂŶĞŽƵƐ ƐƵďƐƚƌƵĐ...

AI summary The text discusses the implications of a fuel-cost-adjustment mechanism and its impact on rate structures, including the need for alignment between base rates and actual costs. It also touches on various aspects of asset management, program evaluation, and regulatory considerations.

ŽǀĞŐƌŽƵŶĚ͖    ϭϬϯ     REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 110 of 143  EKs^Kd/WKt Z/E͘Ͳ,zZKWZKhd/KE ^/d  KDD/^^/KE/E' ^d/Dd ^hDDZz&KZ^^ dZ d/Z D EdK>/'...

AI summary The text discusses the evaluation of asset retirement obligations (ARO) and their impact on the utility sector, including considerations related to the management and financial implications of retiring assets. It touches on the importance of accurate accounting for ARO in regulatory proceedings.

ďLJŽƚŚĞƌƐĂŶĚƚŚĂƚƚŚĞƌĞĂƌĞŶŽŽƵƚƐƚĂŶĚŝŶŐĂƐďĞƐƚŽƐĂďĂƚĞŵĞŶƚ Žƌ ŽƚŚĞƌ ŚĂnjĂƌĚŽƵƐ ŵĂƚĞƌŝĂůƐ Žƌ ĞŶǀŝƌŽŶŵĞŶƚĂů ŝƐƐƵĞƐ Ăƚ ƚŚŝƐ ƐŝƚĞ ƚŚĂƚ ǁŽƵůĚ ĂĚǀĞƌƐĞůLJ ĂĨĨĞĐƚ ĚĞŵŽůŝƚŝŽŶƉůĂŶŶŝŶŐ͘dŚĞƌĞŝƐƐŽŵĞƐŝŐŶŝĨŝĐĂŶƚĂǀĂŝůĂďůĞŵĂƚĞƌŝĂůů...

AI summary The text discusses the implementation of asset retirement obligations (ARO) and the impact of deferred costs on utility operations, emphasizing the need for accurate accounting and regulatory oversight. It highlights the importance of proper financial management and the challenges associated with managing long-term liabilities and cost deferrals.

ĚĚŝƐƉŽƐĂůĨĂĐŝůŝƚLJ͕ ǁŚŝůĞƐƵŝƚĂďůĞŽƚŚĞƌŵĂƚĞƌŝĂůƐ͕ƐƵĐŚĂƐƉƵůǀĞƌŝnjĞĚĐŽŶĐƌĞƚĞĚĞǀŽŝĚŽĨƌĞďĂƌĂŶĚĞŵďĞĚĚĞĚŵĞƚĂůƐ͕ĐĂŶďĞ ďƵƌŝĞĚĂƚƐŝƚĞ͘ x ĞůŝǀĞƌŽƌƐĞůůƐƚŽĐŬƉŝůĞĚƐĂůǀĂŐĞŵĂƚĞƌŝĂů͘    ϭϬϲ     REDACTED (CONFIDENTIAL INFO...

AI summary The text discusses the importance of managing asset retirement obligations and the challenges associated with ensuring accurate accounting practices and cost recovery mechanisms in utility operations.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 114 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Sissaboo River Hydro El...

AI summary This document provides an estimate of decommissioning costs for the Sissaboo River Hydro Electric Generation System, including site remediation and building removal costs, with specific assumptions and notes on the scope of work.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text discusses the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

Auxiliary Buildings Removals (not associated with Production Plant) $0.00 No auxilliary structures at this site BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Remov...

AI summary The document outlines the costs and allowances associated with the removal and decommissioning of various facilities and equipment at a site, including boilers, turbines, electrical systems, and auxiliary structures, as well as salvage allowances for scrap metals and parts.

-$250.00 Allowance General Parts -$750.00 Allowance Insulated Wire and Cables No. 1 -$750.00 Allowance Insulated Wire and Cables No. 2 -$750.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $70,782.00 Site Dec...

AI summary The text presents a decommissioning estimate summary for the Sissiboo River Hydro Electric Generation System, including site remediation costs of $629,700.00, with a note about the need for a large cofferdam to isolate the powerhouse from the river.

artial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text discusses the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

Auxiliary Buildings Removals (not associated with Production Plant) $0.00 No auxilliary structures at this site. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Remo...

AI summary The text outlines the costs and allowances associated with the removal of various equipment and systems at a site, including boilers, turbines, electrical systems, and auxiliary services, as well as salvage allowances for materials like scrap metals and insulated wires.

-$500.00 Allowance General Parts -$1,200.00 Allowance Insulated Wire and Cables No. 1 -$1,200.00 Allowance Insulated Wire and Cables No. 2 -$1,200.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $127,476.00 S...

AI summary The text includes a list of allowances and costs related to engineering and project management for a site decommissioning estimate, specifically for the Sissiboo Falls Development, with a subtotal of $1,304,653.60. Notes mention that HST is additional to the stated costs and that transmission cable and substations will be removed by others.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 116 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Sissaboo River Hydro El...

AI summary The document provides an estimate summary for the decommissioning of the Sissaboo River Hydro Electric Generation System as part of the Asset Retirement Obligations (ARO) Study. It outlines costs associated with site remediation, building removals, and other related activities.

-$1,000.00 Allowance General Parts -$2,400.00 Allowance Insulated Wire and Cables No. 1 -$2,400.00 Allowance Insulated Wire and Cables No. 2 -$2,400.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $136,398.00...

AI summary The text includes a list of allowances and costs related to engineering and project management, specifically mentioning site decommissioning estimates for the Weymouth Falls Development with a subtotal of $1,392,152.80. Notes indicate that HST is an additional cost and that transmission cable, substations, and related transformers will be removed by others.

 ŽŽŶWŽŶĚĂŶĚ^ĂŶĚLJ>ĂŬĞĞǀĞůŽƉŵĞŶƚƐ ŽŽŶ WŽŶĚ ĞǀĞůŽƉŵĞŶƚ ǁĂƐ ĐŽŵƉůĞƚĞĚ ŝŶ ĂďŽƵƚϭϵϮϮĂŶĚƉƌŽǀŝĚĞĚĂďŽƵƚϭ͘ϮϱDtĨƌŽŵ ĞĂĐŚ ŽĨ ŝƚƐ ƚǁŽ ǀĞƌƚŝĐĂůůLJ ŽƌŝĞŶƚĞĚ ƚƵƌďŽͲ ŐĞŶĞƌĂƚŽƌ ƵŶŝƚƐ͘ /ŶĨůŽǁ ĨƌŽŵ ƚŚĞ WŽĐŬǁŽĐŬ >ĂŬĞƐLJƐƚĞŵ...

AI summary The document discusses the regulatory proceedings related to Nova Scotia Power and the Nova Scotia Utility and Review Board, focusing on issues such as asset retirement obligations, fuel cost adjustments, and the impact of these mechanisms on rate structures and customer affordability. It also references past proceedings and the need for prudence reviews.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 118 of 143  EKs^Kd/WKt Z/E͘Ͳ,zZKWZKhd/KE ^/d  KDD/^^/KE/E' ^d/Dd ^hDDZz&KZ^^ dZ d/Z D EdK>/'d/KE^;ZKͿ^dhz;LJ^LJƐƚĞŵͿ...

AI summary The document contains a redacted section of a Hydro Asset Study Appendix, which appears to discuss technical and financial aspects of asset management and retirement obligations, though specific details are confidential and not disclosed.

ĂůůLJƉůĂĐĞĚƚŽƉƌŽǀŝĚĞĂƐƐŝƐƚĂŶĐĞĨŽƌƚƵƌďŽͲŐĞŶĞƌĂƚŽƌŽƉĞƌĂƚŝŽŶ͘ x /ŶƐƚĂůůĂƚŝŽŶ ŽĨ Ă ŐƌĂŶƵůĂƌ ĂŶĚ ƌĞůĂƚŝǀĞůLJ ǁĂƚĞƌͲƚŝŐŚƚ ĞĂƌƚŚͲĨŝůů ĐŽĨĨĞƌĚĂŵ Ăƚ ƚŚĞ ĚƌĂĨƚͲƚƵďĞ ŽƵƚůĞƚ ĂŶĚ ƚĂŝůƌĂĐĞ͘    ϭϭϮ     REDACTED (CONFIDENTIAL...

AI summary The text discusses the analysis of a regulatory proceeding in Nova Scotia, including a redacted hydro asset study. It outlines the need for a comprehensive evaluation of asset retirement obligations and financial mechanisms related to energy efficiency and infrastructure planning.

ǁŝƚŚƚŚĞĚĞĐŽŵŵŝƐƐŝŽŶŝŶŐĞdžĞƌĐŝƐĞŝŶĐůƵĚĞďƵŝůĚŝŶŐĚĞŵŽůŝƚŝŽŶĂŶĚ ƌĞůĂƚĞĚŵĂƚĞƌŝĂůƐĚŝƐƉŽƐĂů͕ĂŶĚƐŝƚĞƉƌŽƚĞĐƚŝŽŶĂŶĚƌĞŵĞĚŝĂƚŝŽŶƉŽƐƚĚĞŵŽůŝƚŝŽŶ͘  dŝĚĞǁĂƚĞƌĞǀĞůŽƉŵĞŶƚ    ϭϭϯ     REDACTED (CONFIDENTIAL INFORMATION REMOVED) RE...

AI summary The document discusses the evaluation of a hydro asset study, including details on asset retirement obligations and the financial implications of managing these obligations. It also touches on the cost of capital and the impact of regulatory decisions on utility operations.

ůŝƚŝŽŶŵĂƚĞƌŝĂůĨŽƌĚŝƐƉŽƐĂů͘ x ZĞŵŽǀĞ ĞdžƉŽƐĞĚ ŝŶƚĞƌŝŽƌ ƐƚĞĞů ƉĂƌƚƐ͖ ŝŶĐůƵĚŝŶŐ ƐƚĞĞů ƉĞŶƐƚŽĐŬƐ ĂŶĚ ďƵƚƚĞƌĨůLJ ǀĂůǀĞƐ͕ ƚŚƌŽĂƚ ƌŝŶŐ͕ ƐƚĞĞů ĚƌĂĨƚͲƚƵďĞƉĂƌƚƐĂŶĚŽƚŚĞƌƌĞůĂƚĞĚŵŝƐĐĞůůĂŶĞŽƵƐŝƚĞŵƐ͘^ƚŽĐŬƉŝůĞĂŶĚƐŽƌƚĨŽƌƐĂůǀĂŐĞ...

AI summary The text discusses various aspects of energy regulation and management in Nova Scotia, including asset retirement obligations, program evaluations, and stakeholder engagement. It outlines the need for effective energy efficiency programs, cost recovery mechanisms, and regulatory oversight. Key topics include energy efficiency, stakeholder participation, and the importance of accurate forecasting.

CTED Hydro Asset Study Appendix C Page 122 of 143  EKs^Kd/WKt Z/E͘Ͳ,zZKWZKhd/KE ^/d  KDD/^^/KE/E' ^d/Dd ^hDDZz&KZ^^ dZ d/Z D EdK>/'d/KE^;ZKͿ^dhz;LJ^LJƐƚĞŵͿ   dŚĞďƵůŬŽĨĐŽƐƚƐĂƐƐŽĐŝĂƚĞĚǁŝƚŚƚŚĞĚĞĐŽŵŵ...

AI summary The text discusses the evaluation of CTED Hydro's asset study, focusing on the implications of asset retirement obligations and the need for accurate cost assessments in the context of a regulatory proceeding. It highlights concerns related to financial planning and the impact of asset management strategies on overall operations.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 123 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study St. Margaret's Bay Hydr...

AI summary The document presents a summary of estimated decommissioning costs for the St. Margaret's Bay Hydro Electric Generation System, including site remediation, site access removals, and building and structure removals, with associated assumptions and notes.

rtial removal of sub-structure; infilling of the powerhouse and an estimate of off-site disposal costs.

AI summary The text discusses the partial removal of sub-structure, infilling of the powerhouse, and an estimate of off-site disposal costs.

Auxiliary Buildings Removals (not associated with Production Plant) $0.00 No auxilliary buildings at this location. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator R...

AI summary The text outlines the costs and allowances associated with the removal and decommissioning of various facilities and equipment at a site, including boilers, turbo-generators, electrical systems, and auxiliary equipment, as well as salvage allowances for scrap metals and parts.

-$500.00 Allowance General Parts -$2,700.00 Allowance Insulated Wire and Cables No. 1 -$2,700.00 Allowance Insulated Wire and Cables No. 2 -$2,700.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $157,836.00 S...

AI summary The text outlines various allowances and costs related to engineering and project management, including site decommissioning estimates for the Coon Pond & Sandy Lake Development, with a total estimated cost of $1,611,849.60. Notes mention that HST is additional to the stated costs, and some information has been redacted as confidential.

Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study St. Margaret's Bay Hydro Electric Generation System Tidewater Development Estimated Item Description Decommissioning Assu...

AI summary This document provides an estimate of decommissioning costs for the St. Margaret's Bay Hydro Electric Generation System, including site remediation, access removals, and building structure removals, with specific assumptions and notes for each item.

Remove administration building and garage structure auxilliary Auxiliary Buildings Removals (not associated with Production Plant) $10,000.00 buildings at this location. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/...

AI summary The text outlines various costs associated with the removal and decommissioning of infrastructure at a site, including buildings, boilers, turbines, electrical systems, and other auxiliary equipment, with specific line items and amounts listed.

Facilities & Decommissioning (Mobilization incl) $30,000.00 Estimated Administration & Overhead Expenses $85,506.40 SALVAGE Scrap Metals - General (Inc. Turbine) -$400.00 Allowance General Parts -$2,000.00 Allowance Insulated Wire and Cabl...

AI summary The text provides a detailed breakdown of costs related to facility decommissioning, including mobilization, administration, overhead expenses, salvage allowances, and engineering and project management costs. It also includes a subtotal for site decommissioning and notes about the removal of transmission infrastructure and the inclusion of HST as an additional cost.

KE/E' ^d/Dd ^hDDZz&KZ^^ dZ d/Z D EdK>/'d/KE^;ZKͿ^dhz;LJ^LJƐƚĞŵͿ   ϭϰ͘ dƵƐŬĞƚZŝǀĞƌ,LJĚƌŽ ůĞĐƚƌŝĐ^LJƐƚĞŵ ƚ ƚŚĞ dƵƐŬĞƚ ZŝǀĞƌ ,LJĚƌŽ ůĞĐƚƌŝĐ ^LJƐƚĞŵ ƚŚĞƌĞ ŝƐ ŽŶĞ ŚLJĚƌŽͲĞůĞĐƚƌŝĐ ĚĞǀĞůŽƉŵĞŶƚ ǁŝƚŚ Ă ƐŝŶŐůĞ ƉŽǁ...

AI summary The document discusses the dƵƐŬĞƚ ZŝǀĞƌ ,LJĚƌŽ LJůĞĐƚƌŝĐ ^LJƐƚĞŵ, which outlines the need for a new approach to managing asset retirement obligations, emphasizing the importance of accurate financial planning and the establishment of a dedicated fund. It highlights the need for transparency and proper oversight in handling these obligations.

ŝĚĞƐĂŵĞĂŶƐĨŽƌĐŽŶƚƌŽůůŝŶŐĨůŽǁƉĂƐƚĞĂĐŚŽĨƚŚĞƚƵƌďŝŶĞƐĂŶĚĂƐƐŽĐŝĂƚĞĚ ƚŚƌŽĂƚͲƌŝŶŐƐƚŽƚŚĞĚƌĂĨƚƚƵďĞĂŶĚŝŶƚŽƚŚĞƚĂŝůƌĂĐĞĐŚĂŶŶĞů͘ dŚĞƉŽǁĞƌŚŽƵƐĞĐĂŶďĞĂĐĐĞƐƐĞĚǀŝĂƚŚĞƉĂǀĞĚZĂLJŶĂƌĚƚŽŶZŽĂĚ͕ǁŚŝĐŚŝƐĂƉƉƌŽdžŝŵĂƚĞůLJƚǁŽ ŵŝůĞƐŶŽƌƚ...

AI summary The text discusses the implementation of a fuel-cost-adjustment mechanism and its impact on rate structures, referencing specific programs and regulatory proceedings. It mentions the ZĂLJŶĂƌĚƚŽŶ ZŽĂĚ and related regulatory actions involving asset retirement obligations and stakeholder engagement.

^hDDZz&KZ^^ dZ d/Z D EdK>/'d/KE^;ZKͿ^dhz;LJ^LJƐƚĞŵͿ   ĞŵŽůŝƚŝŽŶ ƉůĂŶŶŝŶŐ ĨŽƌ ƚŚŝƐ ĨĂĐŝůŝƚLJ ǁŝůů ĐŽŶƐŝĚĞƌ ƚŚĂƚ ƚŚĞ ŝŶƚĂŬĞ ƐƚƌƵĐƚƵƌĞ ĂŶĚ ĨŽƌĞďĂLJ ǁŝůů ďĞ ĚĞǁĂƚĞƌĞĚ͕ĂŶĚĂůůĞůĞĐƚƌŝĐĂůĂŶĚĐŽŵŵƵŶŝĐĂƚŝŽŶƐĞƋƵŝƉŵ...

AI summary The document discusses the importance of ensuring that the asset retirement obligations (ARO) mechanism is effective in capturing the true costs of retiring assets. It highlights concerns about the current mechanism not adequately reflecting actual costs, leading to potential misalignment in cost recovery and rate-setting processes. The discussion emphasizes the need for accurate cost modeling and transparency in the regulatory process.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 128 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Tusket Hydro Electric G...

AI summary This document provides an estimate of decommissioning costs for the Tusket Hydro Electric Generation System, including site remediation, building removal, and auxiliary structure removal. The total estimated cost is outlined with specific assumptions for each item.

ƉŽƌĂƌLJ ƉŽǁĞƌ ƐŽƵƌĐĞ ĂŶĚ ĐŽŶŶĞĐƚŝŽŶ ĨŽƌ ƚŚĞ ĐƌĂŶĞ ŵĂLJ ďĞ ƌĞƋƵŝƌĞĚ͘dŚŽƐĞĐŽŵƉŽŶĞŶƚƐĐĂŶ ƚŚĞŶ ďĞƐĞƚĂƐŝĚĞ ĂƐƌĞƋƵŝƌĞĚĨŽƌƐĂůǀĂŐĞĂŶĚĚŝƐƉŽƐĂůŽŶĐĞ ƚŚĞƌŽŽĨ ƐƚƌƵĐƚƵƌĞŝƐƌĞŵŽǀĞĚ͘    ϭϮϰ     REDACTED (CONFIDENTIAL IN...

AI summary The text discusses the evaluation of a hydro asset study, focusing on the analysis of asset retirement obligations and the implications for the energy and resource studies conducted by EKS. It highlights the need for proper accounting and management of these obligations.

ŵŝƐƐŝŽŶŝŶŐĞdžĞƌĐŝƐĞŝŶĐůƵĚĞďƵŝůĚŝŶŐĚĞŵŽůŝƚŝŽŶĂŶĚ ƌĞůĂƚĞĚŵĂƚĞƌŝĂůƐĚŝƐƉŽƐĂů͕ĂŶĚƐŝƚĞƉƌŽƚĞĐƚŝŽŶĂŶĚƌĞŵĞĚŝĂƚŝŽŶƉŽƐƚĚĞŵŽůŝƚŝŽŶ͘      ϭϮϱ     REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C...

AI summary The text discusses the analysis of a regulatory proceeding in Nova Scotia, including topics such as asset retirement obligations, energy and resource studies, and work and task studies. It references confidential information that has been redacted from a hydro asset study.

KŶĐĞŵĂĐŚŝŶĞƌLJĂŶĚĞƋƵŝƉŵĞŶƚŚĂƐďĞĞŶƌĞŵŽǀĞĚĨƌŽŵƚŚĞŵĂŝŶƉŽǁĞƌŚŽƵƐĞ͕,sƐLJƐƚĞŵƐ ĐĂŶ ďĞ ƌĞŵŽǀĞĚ ĂŶĚ ƚŚĞ ĨĂĐŝůŝƚLJ ĐĂŶ ďĞ ĂďĂŶĚŽŶĞĚ͘  ĞĐĂƵƐĞ ŽĨ ƚŚĞ ŵĂŶŶĞƌ ŝŶ ǁŚŝĐŚ ƚŚĞ    ϭϮϲ     REDACTED (CONFIDENTIAL INFORMAT...

AI summary The text discusses the analysis of a hydro asset study, including the evaluation of asset retirement obligations and the involvement of Energy and Resource Studies (EKS) in the process. It references a confidential appendix and mentions the Work and Task (WKT) framework.

ŬƉŝůĞĚŽƵƚƐŝĚĞƚŚĞƉŽǁĞƌŚŽƵƐĞĂƚƐŝƚĞĨŽƌƐĂůǀĂŐĞĂŶĚĚŝƐƉŽƐĂů͘ x ZĞŵŽǀĂůŽĨ,sƐLJƐƚĞŵĞƋƵŝƉŵĞŶƚĂŶĚĚƵĐƚŝŶŐ͘ x ZĞŵŽǀĞďƵƌŝĞĚƐĞǁĂŐĞĚŝƐƉŽƐĂůƐĞƌǀŝĐĞƐĂŶĚĂŶLJĨƌĞƐŚǁĂƚĞƌƉŝƉŝŶŐĂŶĚĞƋƵŝƉŵĞŶƚ͘    ϭϮϳ     REDACTED (CONFIDENTIA...

AI summary The document discusses the analysis of a regulatory proceeding in Nova Scotia, including topics such as asset retirement obligations and energy and resource studies. It also references a hydro asset study and a redacted appendix.

/E' ^d/Dd ^hDDZz&KZ^^ dZ d/Z D EdK>/'d/KE^;ZKͿ^dhz;LJ^LJƐƚĞŵͿ   x ZĞŵŽǀĞĂƵdžŝůŝĂƌLJďƵŝůĚŝŶŐƐ͘dŚŝƐǁŝůůŝŶĐůƵĚĞĂůůďƵŝůĚŝŶŐƐĂƚƚŚĞďĂƐĞĐĂŵƉŝŶĐůƵĚŝŶŐƚŚĞŵĂŝŶŽĨĨŝĐĞĂŶĚ ĐŽŶƚƌŽůĐĞŶƚƌĞĂŶĚŐĂƌĂŐĞ͕ƐƚƌƵĐƚƵƌĞƐǁŚŝĐŚŵ...

AI summary The text discusses various aspects of utility regulation, including the impact of fuel-cost-adjustment mechanisms, the importance of asset retirement obligations, and the need for effective energy and resource studies. It also touches on the management of energy resources and the role of regulatory oversight in ensuring fair and efficient utility operations.

Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Wreck Cove Hydro Electric Generation System Gisborne Development Estimated Item Description Decommissioning Assumptions/N...

AI summary This document provides an estimate summary for the decommissioning of the Wreck Cove Hydro Electric Generation System, including site remediation costs and details about the removal of structures and site services.

Auxiliary Buildings Removals (not associated with Production Plant) $0.00 N/A BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Removals $20,000.00 One horizontal turb...

AI summary The text details various costs and allowances associated with the removal and decommissioning of equipment and systems at a site, including turbo-generators, electrical systems, and building infrastructure, along with salvage allowances for scrap metals and parts.

-$350.00 Allowance General Parts -$500.00 Allowance Insulated Wire and Cables No. 1 -$500.00 Allowance Insulated Wire and Cables No. 2 -$500.00 Allowance ENGINEERING & PROJECT MANAGEMENT Engineering & Project Management $63,924.00 Site Dec...

AI summary The text includes cost allowances for various materials and an estimate for site decommissioning, with a note that HST is additional to the stated costs. The document contains a redacted section from a hydro asset study appendix.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 136 of 143 Nova Scotia Power Hydro Production Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Wreck Cove Hydro Electr...

AI summary This document provides an estimate of decommissioning costs for the Wreck Cove Hydro Electric Generation System as part of an Asset Retirement Obligations (ARO) study. The estimated cost for site remediation is $327,500, with considerations for environmental protection and site restoration.

garages, houses and miscellaneous structures. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Two vertical turbo-generator units, includes removals of rotor Turbo Generator Removals...

AI summary The text outlines various removal and decommissioning costs related to infrastructure at a site, including boilers, turbo-generator units, electrical systems, and HVAC components, with detailed line items for each category.

$2,052,027.20 Notes: 1. Transmission cable, substations and related transformers to be removed by others in preparation for general demolition. 2. HST is additional to stated estimated costs. Figure 31 REDACTED (CONFIDENTIAL INFORMATION RE...

AI summary The text discusses the removal of transmission infrastructure and the inclusion of HST in estimated costs. It also mentions the EKS Hydro Asset Study and related technical details regarding asset management and infrastructure planning.

ŽŵŵŝƐƐŝŽŶŝŶŐĞdžĞƌĐŝƐĞ͘^ŽŵĞ ŽĨƚŚĞƐĞĨĞĂƚƵƌĞƐŵĂLJƌĞŵĂŝŶŝŶƉůĂĐĞƉŽƐƚĚĞĐŽŵŵŝƐƐŝŽŶŝŶŐ͕ǁŚŝůĞŽƚŚĞƌƐŵĂLJďĞƚĞŵƉŽƌĂƌLJĂŶĚǁŝůůďĞ ƌĞŵŽǀĞĚ͘dŚĞĨŽůůŽǁŝŶŐŝƐĂƐƵŵŵĂƌLJŽĨƚŚĞĚĞĐŽŵŵŝƐƐŝŽŶŝŶŐĐŽƐƚƐ͗ 1RYD6FRWLD3RZHU+\GUR3URGXFWLRQ ^ŝƚ...

AI summary The document discusses the decommissioning costs and development of the Nova Scotia Power Hydro System, including costs and development related to the Hydro Development Area. It references a specific date, 2018-10-14, and mentions Nova Scotia Power (NSP) as the entity involved in the hydro system.

      :UHFN&RYH+\GUR6\VWHP LVERUQH'HYHORSPHQW  :UHFN&RYH'HYHORSPHQW   7RWDO  ...

AI summary The text provides a summary of decommissioning costs for the Wreck Cove Hydro System, with a total cost of $34,384,785.60. It references individual development summaries for more detailed information and includes a redacted section from an Energy and Resource Studies (EKS) Hydro Asset Study appendix.

Ϳ^dhz;LJ^LJƐƚĞŵͿ   s/͘ WW E/ ^      ϭϯϮ     REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix C Page 139 of 143  EKs^Kd/WKt Z/E͘Ͳ,zZKWZKhd/KE ^/d  KDD/^^/KE/E' ^d/Dd ^...

AI summary The document discusses a hydro asset study from 1980, focusing on the analysis of a hydroelectric project by :. Q. zĂƚĞƐ, W. njŶŐ. It outlines key aspects including project planning, economic considerations, and technical evaluations related to the asset.

ht control and three dimensional centres of gravity data necessary for engineering of crane lifts for components and finished Cohasset Panuke topsides modules for M&M Offshore Ltd.

AI summary The text refers to control and three-dimensional centres of gravity data required for engineering crane lifts for components and finished Cohasset Panuke topsides modules for M&M Offshore Ltd.

................................................................................................................................ 17 Appendix 1 ‐ BIO Sketch J. B. Yates, P. Eng. .................................................................

AI summary This document is part of a regulatory proceeding related to the demolition study of the Powerhouse at the Annapolis Tidal Power Generation Station owned by Nova Scotia Power Inc. The content is redacted and contains confidential information.

r the structure. The total estimated decommissioning costs for the Annapolis Tidal Power Generating Station and adjacent Interpretive Centre is approximately $6,458,390. CAN, plus applicable taxes. 1 REDACTED (CONFIDENTIAL INFORMATION REMO...

AI summary The document outlines the estimated decommissioning costs for the Annapolis Tidal Power Generating Station and adjacent Interpretive Centre, totaling approximately $6,458,390 CAN, plus applicable taxes. It also references a demolition study for the powerhouse as part of decommissioning plans.

age 7 of 25 NOVA SCOTIA POWER INC. ‐ HYDRO PRODUCTION ANNAPOLIS TIDAL POWER GENERATION STATION POWERHOUSE DEMOLITION STUDY operation as long as the causeway is in place, and will be handed back to the provincial government upon decommissio...

AI summary The text discusses the decommissioning process of the Annapolis Tidal Power Generation Station, noting that the facility will remain operational as long as the causeway is in place and will be returned to the provincial government upon decommissioning.

Demolition Estimate Criteria This study is intended to provide a reasonable approximation of expected costs for conceptual demolition plans, including consideration for site security (public safety) during demolition works; worker safety;...

AI summary This document outlines the criteria for estimating demolition costs, emphasizing safety, environmental protection, and compliance with regulatory standards. It references AACE International Class 5 estimates and CCME guidelines, noting the expected accuracy range and factors influencing estimate accuracy.

Experience and skill level of the estimator;  Estimating techniques employed;  Time and level of effort budgeted to prepare the estimate;  Unique or remote nature of project locations;  The accuracy of the composition of the input and...

AI summary The document discusses the unique demolition methodology requirements for the Annapolis facility, considering site conditions, powerhouse configuration, and location factors. It also references current contractor man-hour rates and machine/equipment demolition tasks for the site.

The costs detailed in this report are representative of demolition of assets directly associated with the existing powerhouse and existing machinery and mechanical equipment used in the generation of electricity. Demolition of equipment us...

AI summary This report outlines the costs associated with the demolition of assets directly related to the existing powerhouse and generating equipment, excluding transmission and distribution infrastructure. It emphasizes site remediation to pre-powerhouse conditions and the disposal of construction debris, while noting that certain costs, such as permits and environmental assessments, are not included.

ther building materials, will be removed from site and disposed of off‐site at appropriately licensed disposal and recycling facilities. Site will be left in “brown‐field” condition. A hazardous materials assessment is not included. Please...

AI summary The document outlines the decommissioning process for the Annapolis Tidal Power Generation Station, noting that hazardous materials such as asbestos, PCBs, and oil-filled cables may be encountered during demolition. However, associated removal costs are not included in the current estimate. Engagement with local Mi'kmaq communities is also not accounted for in the cost estimate.

and electrical operating equipment and related components, removal of turbo‐generator and related parts and demolition and removal of below‐grade powerhouse structure, as required. The adjacent interpretive centre structure and systems con...

AI summary The document outlines the process for the demolition and decommissioning of the Annapolis Tidal Power Generation Station, including the removal of equipment, structures, and environmental approvals required. It also mentions the responsibility of the demolition contractor for off-site material disposal.

access to powerhouse lower levels during decommissioning and removals work and will be removed in the closing stages of decommissioning. Due to the robust nature of the facility’s reinforced concrete structure, only limited reinforced conc...

AI summary The text discusses the decommissioning process of a powerhouse, including the removal of reinforced concrete, structural stabilization measures, and the use of heavy reinforced concrete bulkhead walls to prevent erosion from seawater infiltration. The disposal of demolition materials and the structural reinforcement required due to the site's location and tidal conditions are also addressed.

9 REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix D Page 13 of 25 NOVA SCOTIA POWER INC. ‐ HYDRO PRODUCTION ANNAPOLIS TIDAL POWER GENERATION STATION POWERHOUSE DEMOLITION STUDY

AI summary The document outlines a study related to the demolition of the powerhouse at the Annapolis Tidal Power Generation Station owned by Nova Scotia Power Inc. It is part of a larger hydro asset study and includes confidential information.

aterials to a suitable salvage facility. However, nominal salvage values will be entered on the accompanying cost estimate spreadsheet as a negative value to reflect potential salvage credit value. 11 REDACTED (CONFIDENTIAL INFORMATION REM...

AI summary The document discusses the decommissioning estimate summary for the Annapolis Tidal Power Generating Station as part of an asset retirement obligations (ARO) study. It mentions the inclusion of salvage values in a cost estimate spreadsheet, with nominal salvage values entered as negative values to reflect potential salvage credit.

of 25 Site Decommissioning Estimate Summary for Asset Retirement Obligations (ARO) Study Annapolis Tidal Power Generating Station Estimated Item Description Decommissioning Assumptions/Notes Costs SITE REMEDIATIONS Site Remediation Issues...

AI summary The document provides a summary of estimated decommissioning costs for the Annapolis Tidal Power Generating Station, including site remediations, access removals, and services removals, with notes on the scope of each item.

$589,926.00 SALVAGE Scrap Metals - General (Inc. Turbine) -$9,900.00 45 tons allowance at $0.11 per lb (Scrap Carbon Steel) General Parts -$2,100.00 10,000 lbs allowance at $0.21 per lb Insulated Wire and Cables No. 1 -$14,000.00 8000 lbs...

AI summary The document outlines estimated costs for the demolition of the Annapolis Tidal Power Generation Station, including salvage values for materials like scrap metals and insulated wires, as well as engineering and project management costs. Notes clarify the scope of the demolition and the inclusion of the Interpretive Centre as part of the powerhouse.

057 to $0.076 per kg 2. Construction and Demolition Debris (Mixed) $0.110 to $0.146 per kg 3. Scrap Metals (This is a disposal fee, not a salvage value) $0.057 to $0.076 per kg Estimated disposal costs derived in this study per site consid...

AI summary The document outlines estimated disposal costs for construction and demolition debris and scrap metals, including tipping fees and trucking costs, as part of a demolition study for the Annapolis Tidal Power Generation Station by Nova Scotia Power Inc.

4. Salvage Values Pertinent posted material salvage values for Mississauga Ontario on July 16, 2018 are as follows: Copper (bare) $3.10/lb Iron $0.08/lb Carbon Steel $0.11/lb Stainless steel $0.65/lb Yellow brass $2.25/lb Mixed aluminum $0...

AI summary The document provides salvage value estimates for various materials at a site in Mississauga, Ontario, as of July 16, 2018. It notes that while some materials like copper and stainless steel have higher values, the overall salvage value of the turbine assembly is expected to be low due to the difficulty of separating materials. The salvage value of the turbine is estimated at around $6,600, which is relatively small compared to total decommissioning costs.

on to the overall estimate of decommissioning costs for this site. Where there is reasonable potential for salvage credits, a negative value has been provided on the pertinent spreadsheet estimate. 15 REDACTED (CONFIDENTIAL INFORMATION REM...

AI summary The text discusses the estimation of decommissioning costs for the Annapolis Tidal Power Generation Station, noting that salvage credits may result in negative values for the overall estimate.

5. Decommissioning Estimate Summary and Conclusions Decommissioning of the Annapolis powerhouse will be an endeavor which will depend heavily on efficient coordination of various trades including dive teams, heavy‐lift contractors, HVAC sp...

AI summary The decommissioning of the Annapolis powerhouse involves significant coordination among various trades, detailed planning, and structural enhancements. The process includes shutting down operations, removing equipment, and infilling the powerhouse with clean materials. The estimated total cost is approximately $6,458,390 CAN, plus applicable taxes.

ation and therefore part of the powerhouse. Total costs for decommissioning this facility as described herein is estimated to be approximately $6,458,390. CAN, plus applicable taxes. 16 REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED...

AI summary The document discusses the estimated cost of decommissioning the Annapolus Tidal Power Generation Station's powerhouse, which is approximately $6,458,390. CAN, plus applicable taxes. It also includes a bio sketch of J. B. Yates, P. Eng., who has extensive experience in engineering projects.

d Power.  A system-wide head-gate study for Nova Scotia Power’s Hydro Production Department. 1 REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix D Page 24 of 25 JAMES B. YATES, P.ENG. SENIOR STRUCTURAL/CIVIL...

AI summary The document references a system-wide head-gate study for Nova Scotia Power’s Hydro Production Department, conducted by James B. Yates, a Senior Structural/Civil Engineer. The content is partially redacted due to confidentiality.

t Letter” motion picture in Shelburne, Nova Scotia.  Structural and mechanical engineering support for sets and props associated with “The Sea Wolf” motion picture, filmed in Halifax. Other Civil Projects:  Seven kilometres of Trans-Cana...

AI summary Nova Scotia Power Inc. (NSPI) commissioned Strum Consulting to evaluate the costs of delineating, permitting, and monitoring wetland alterations resulting from the decommissioning of several hydro-systems, including the removal of infrastructure and restoring water levels to historic levels.

of the watercourses to select for wetlands which fall within 10 m of the watercourses (Select by Location tool in ArcGIS). The total wetland area associated with each watercourse was then calculated. Estimation of Wetland Alteration Permit...

AI summary The document outlines methods for estimating wetland alteration permitting and compensation costs associated with decommissioning hydro-systems. It details factors such as field costs, permit submission, monitoring, and compensation based on unmapped wetlands, functional value, and creation costs.

in estimating the wetland compensation costs: 1) Un-mapped wetland area; 2) Post alteration wetland establishment; 3) Wetland functional value; and 4) Wetland area creation cost. Un-mapped Wetland Area An allowance for the area of un-mappe...

AI summary The document discusses the estimation of wetland compensation costs, highlighting the need to account for un-mapped wetland areas, particularly treed wetlands, which are under-represented in existing inventories. A multiplier of +25% is applied to compensate for this under-representation.

ED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study Appendix E Page 15 of 163 Notes: ¯ 11 10 9 1. Data Sources: NS Power Inc., NSTD, GeoNOVA, Geogratis. 2. Projection: NAD83 UTM Zone 20N Legend: 6 7 8 Avon Hydro System Wetland within 5...

AI summary The text provides notes and data sources for a hydro asset study, mentioning entities such as NS Power Inc. and NSTD, and includes a legend related to the Avon Hydro System and wetlands near lakes.

REDACTED Hydro Asset Study Appendix F Page 1 of 146 HYDRO ASSET ARCHAEOLOGY STUDY COSTING DOCUMENT Submitted to: Nova Scotia Power Inc. Submitted by: Boreas Heritage Consulting Inc. Project #18-007-01 DECEMBER 2018 B REAS Heritage Consulti...

AI summary This document outlines the Hydro Asset Archaeology Study costing document submitted to Nova Scotia Power Inc. by Boreas Heritage Consulting Inc. in December 2018. It includes an introduction and a section on archaeological assumptions related to NSPI asset locations and methodology.

or into the final cost. ANY additional areas not on the Asset List, and/or any modifications to the areas originally provided by NSPI are not covered by this report and may result in additional costs. Additionally, all proposed impact area...

AI summary The text outlines assumptions and limitations related to the costing assessment for a hydro asset archaeology study. It emphasizes that additional areas or modifications not included in the original Asset List may result in unexpected costs. NSPI provided Boreas Heritage with a list of asset locations considered clear of archaeological concerns based on prior studies, which should be assumed to be clear for future work.

Asset Assessment Boreas Heritage has made the following assumptions when considering the estimated costs associated with this Hydro Asset Archaeology Costing Study: Page 4 REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset St...

AI summary The document outlines assumptions made by Boreas Heritage in estimating the costs associated with a Hydro Asset Archaeology Costing Study conducted by NSPI. The content is partially redacted and includes a reference to a specific page and document.

dro Asset Costing Document identified for the appropriate methodology and scope of more detailed assessment for areas considered to exhibit high archaeological potential. As a base assumption for all asset locations (excluding freeboard or...

AI summary The document outlines the methodology for assessing asset locations with high archaeological potential, emphasizing the need for archaeological reconnaissance unless prior assessments by NSPI and CCH confirm sufficient coverage. This applies to asset removal in high potential areas.

e 10 REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix F Page 14 of 146 NSPI – Hydro Asset Costing Document x routine monitoring of the site to record any deterioration or change; maintain an inventory of graf...

AI summary The document outlines archaeological cost estimates for the potential removal of hydroelectric assets owned by NSPI. It includes an introduction to the cost estimates, which are based on prior archaeological research and methodological assumptions. Table 1 provides total costs for all systems, categorized by recommended course of action.

ded course of action. The following sections present estimated costs for each hydro system, and are broken down by individual (or grouped) asset locations and by recommended course of action. Table 1. Total System Costs for all Hydro Asset...

AI summary The document outlines estimated costs for hydro system assets, broken down by location and course of action. It emphasizes that these are potential ranges, with archaeological reconnaissance assumed as a minimum requirement, and actual costs likely varying based on findings.

s associated with the removal of assets associated with the Avon Hydro System. Actual costs for archaeological assessment will vary and will likely fall within the range of costs presented. Table 3. Summary of costings for individual asset...

AI summary The text discusses the costs associated with the removal of assets from the Avon Hydro System, including archaeological assessments for locations such as Card Lake Main and Wing Dams and Card Lake Reservoir. The assessment costs are estimated to vary and include reconnaissance, shovel testing, excavation, and monitoring.

associated with the removal of assets associated with the Annapolis Hydro System. Actual costs for archaeological assessment will vary and will likely fall within the range of costs presented. Table 4. Summary of costings for individual as...

AI summary The document outlines the costs associated with archaeological assessments for the Bear River Hydro System and Gulch Pipeline. It highlights the need for reconnaissance, shovel testing, and excavation at these sites due to their high potential for impacting archaeological resources.

REDACTED Hydro Asset Study Appendix F Page 29 of 146 NSPI – Hydro Asset Costing Document 3.5 BLACK RIVER HYDRO SYSTEM - COSTING The Black River Hydro System is situated within the Municipality of the County of Kings and drains approximatel...

AI summary The Black River Hydro System, located in the Municipality of the County of Kings, consists of multiple dams and generating units with a total capacity of 20.7 MW. The document outlines the potential costs associated with the removal of these assets, noting that archaeological assessments may influence the actual cost range.

associated with the removal of assets associated with the Black River Hydro System. Actual costs for archaeological assessment will vary and will likely fall within the range of costs presented. Table 5. Summary of costings for individual...

AI summary The text outlines the costs associated with archaeological assessments for various assets within the Black River Hydro System, including reconnaissance, shovel testing, excavation, and monitoring for multiple locations such as White Rock Plant, Hells Gate Plant, and others.

epresents two generating units with an operating capacity of 2.6 MW, include the Donahue Spillway, Donahue Lake Dam, Toms Lake Wing Dam, Dickie Brook Pipeline, as well as associated headponds. The following costings represent the possible...

AI summary The text discusses the removal costs for assets in the Dickie Brook Hydro System, including archaeological assessments and the potential impact on archaeological resources, particularly around the Donahue Spillway. Previous assessments did not find any archaeological resources, and the recommended course of action is archaeological reconnaissance.

osts associated with the removal of assets associated with the Fall River Hydro System. Actual costs for archaeological assessment will vary and will likely fall within the range of costs presented. Table 7. Summary of costings for individ...

AI summary The text discusses the costs associated with the archaeological assessment of assets within the Fall River Hydro System, including the Miller Lake Dam and the Fall River Pipeline. It outlines the types of assets and the recommended course of action for archaeological evaluation.

N REMOVED) REDACTED Hydro Asset Study Appendix F Page 50 of 146 NSPI – Hydro Asset Costing Document 3.8 HARMONY HYDRO SYSTEM - COSTING The Harmony Hydro System is situated within the upper Medway River watershed, spanning northern Queens C...

AI summary The document discusses the Harmony Hydro System, located in the upper Medway River watershed, and provides a summary of costs associated with the removal of its assets, including the Harmony Wing Dam, Harmony Plant, and Harmony Lake Dam. Archaeological assessments are noted as a factor influencing the cost range.

) REDACTED Hydro Asset Study Appendix F Page 53 of 146 NSPI – Hydro Asset Costing Document 3.9 LEQUILLE HYDRO SYSTEM - COSTING The Lequille Hydro System is located in western Annapolis County, along the Allains River watershed (locally “Al...

AI summary The document discusses the Lequille Hydro System, located in western Annapolis County, and outlines the potential costs for the removal of its assets, including archaeological assessments and monitoring. The Dargie Lake Dam is highlighted as having high archaeological potential.

sufficient with respect to removal of assets, additional assessment may be required, which would increase estimated costs. Asset Location: Grand Lake Flowage Type: Dewatering Based on previous background research and archaeological potenti...

AI summary The text discusses the need for archaeological assessments at two locations—Grand Lake Flowage and Lequille Plant—due to their high potential for impacting archaeological resources. These assessments are recommended to ensure proper evaluation before any asset removal or modification, with estimated costs provided for each site.

associated with the removal of assets associated with the Mersey Hydro System. Actual costs for archaeological assessment will vary and will likely fall within the range of costs presented. Table 10. Summary of costings for individual asse...

AI summary The text discusses the costs associated with the removal of assets within the Mersey Hydro System, including archaeological assessments and various asset locations such as Cowie Falls Wing Dams and Deep Brook Dam. A table provides a summary of costings for individual asset locations.

ufficient with respect to removal of assets, additional assessment may be required, which would increase estimated costs. Asset Location: Deep Brook Headpond Type: Dewatering Based on previous background research and archaeological potenti...

AI summary The text discusses the archaeological potential of the Deep Brook Headpond and the need for an assessment due to the removal of assets, which may increase costs. It also references a costing document for the Lower Great Brook Spillway and Wing Dam.

plus applicable taxes. If it is determined that the previous study was not sufficient with respect to removal of assets, additional assessment may be required, which would increase estimated costs. Page 59 REDACTED (CONFIDENTIAL INFORMATIO...

AI summary The document discusses the potential archaeological significance of two hydroelectric assets in Nova Scotia: the Lower Great Brook Headpond and the Big Falls Main Dam and Spillway. It highlights the need for additional archaeological assessments due to the high potential for archaeological resources, which may increase project costs.

pplus applicable taxes. If it is determined that the previous study was not sufficient with respect to removal of assets, additional assessment may be required, which would increase estimated costs. Asset Location: Nictaux Main Dam and Spi...

AI summary The document discusses archaeological assessments for two hydro assets: the Nictaux Main Dam and Spillway, and the Nictaux Headpond. Previous studies suggest low archaeological potential, but additional assessments may be needed if asset removal is involved, potentially increasing costs.

ated that the archaeological assessment can be undertaken at a cost off plus p applicable taxes. Page 77 REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix F Page 81 of 146 NSPI – Hydro Asset Costing Document 3...

AI summary The text discusses the Roseway Hydro System in Shelburne County, Nova Scotia, and outlines the potential costs associated with the removal of its assets, including the Roseway Dam, Saddle Dam, and Spillway. The costs include archaeological assessment, reconnaissance, shovel testing, and excavation.

REDACTED Hydro Asset Study Appendix F Page 82 of 146 NSPI – Hydro Asset Costing Document 3.14 SHEET HARBOUR HYDRO SYSTEM - COSTING The Sheet Harbour Hydro System is situated within Halifax Regional Municipality, beginning approximately 3.5...

AI summary The document discusses the Sheet Harbour Hydro System, including its location, generating units, and associated infrastructure. It provides a summary of potential costs for archaeological assessments and asset removal, with various cost categories listed for different locations within the system.

was not sufficient with respect to removal of assets, additional assessment may be required, which would increase estimated costs. Asset Location: Coon Pond Type: Dewatering Based on previous background research and archaeological potentia...

AI summary The text discusses the potential for archaeological resources at Coon Pond and Sandy Lake Dam, noting the need for additional assessments and mitigation measures due to the presence of historic structures and high archaeological potential. Estimated costs for the archaeological assessment are mentioned.

REDACTED Hydro Asset Study Appendix F Page 108 of 146 NSPI – Hydro Asset Costing Document 3.17 TUSKET HYDRO SYSTEM - COSTING The Tusket Hydro System is situated within Yarmouth County and the southern extent of Digby County. The Tusket Riv...

AI summary The document outlines the Tusket Hydro System, located in Yarmouth and Digby Counties, and lists the associated NSPI assets. It provides a summary of potential costs for the removal of these assets, including archaeological assessments and various stages of work such as reconnaissance, shovel testing, and excavation.

s associated with the removal of assets associated with the Wreck Cove Hydro System. Actual costs for archaeological assessment will vary and will likely fall within the range of costs presented. Table 18. Summary of costings for individua...

AI summary The text discusses the archaeological assessment costs associated with the removal of assets in the Wreck Cove Hydro System, including specific locations such as D1 Dam and D1 – Cheticamp Flowage. Previous assessments have indicated low potential for archaeological resources in some areas, though additional assessments may be required if initial studies are deemed insufficient.

ficient with respect to removal of assets, additional assessment may be required, which would increase estimated costs. Asset Location: D4 – Gisborne Flowage Type: Dewatering Based on previous background research and archaeological potenti...

AI summary The text discusses archaeological assessments required for two hydro assets in Nova Scotia — D4 – Gisborne Flowage and D7 – McMillan Flowage — due to their high potential for impacting archaeological resources. It highlights the need for reconnaissance and potential additional assessments if previous studies are deemed insufficient.

NS Power expressed the view that the redevelopment project could provide a very long- The anticipated long life of these hydro assets introduces added complexity and uncertainty into the lived asset, on the order of a hundred years. If Mer...

AI summary NS Power argues that the long life of hydro assets like Mersey introduces uncertainty into analysis, particularly regarding potential redevelopment costs in 30-40 years. They note that end effects calculations may not account for these future costs or the possibility of decommissioning, and that reinvestment decisions will be evaluated as part of capital applications.

IRP Final Report Comments – Bates White No. Topic / Reference Bates White Comment NS Power Response computation would be if actual decommissioning costs associated with any final scope of decommissioning were roughly 66 percent of their cu...

AI summary Bates White comments on the IRP Final Report, suggesting that if actual decommissioning costs were 66 percent of currently estimated costs, it would impact computations. NS Power has not yet responded to this comment.