N-52026-2027 GRA Appendix 1-6 - Redacted
33 passages
2026-2027 GRA Direct Evidence Appendix 1B Page 2 of 4 REDACTED (CONFIDENTIAL INFORMATION REMOVED) COSS Cost of Service Study CRA Canada Revenue Agency CWIP Construction Work in Progress DCRR DSM Cost Recovery Rider DDA Decarbonization Defe...
AI summary This document is part of a 2026-2027 General Rate Application (GRA) appendix, listing acronyms and their expansions related to energy regulation, cost recovery mechanisms, and environmental policies in Nova Scotia. Key terms include Demand Side Management (DSM), Distributed Energy Resources (DER), and legislative frameworks like the Environmental Goals and Climate Change Reduction Act (EGCCRA).
2026-2027 GRA Direct Evidence Appendix 1B Page 4 of 4 REDACTED (CONFIDENTIAL INFORMATION REMOVED) OT Overtime OTE Overhead Transmission Equipment PCB Polychlorinated Biphenyls PCR Program Cost Recovery (for DSM) PHB Port Hawkesbury Biomass...
AI summary This document is an appendix from a 2026-2027 General Rate Application (GRA) proceeding in Nova Scotia, containing a list of acronyms and their expansions relevant to energy regulation, infrastructure, and financial terms. The content is redacted, with confidential information removed, and focuses on technical, operational, and regulatory terminology used in the proceeding.
While NS Power is a leader in climate change mitigation, adaptation is still needed NS Power has achieved the fastest transition to cleaner energy among Canadian utilities and is on track to achieve its target of supplying 80% of its energ...
AI summary NS Power is a leader in climate mitigation, achieving 54% CO2 reduction since 2005 and targeting 80% renewable energy by 2030. However, climate adaptation remains critical, including safeguarding electricity assets. Climate change requires both mitigation (reducing emissions) and adaptation (preparing for impacts).
Chapter 2 Risk/Opportunity Assessment Building on the industry-wide climate knowledge in Chapter 1, this chapter focuses on NS Power's adaptation plan, compromising on three steps: [Identify Critical Assets and Operations](#page-40-1) (Ste...
AI summary Chapter 2 outlines NS Power's three-step adaptation plan for climate risks: identifying critical assets, assessing climate impacts, and evaluating risks to assets. It emphasizes scenario analysis and integration with existing risk management frameworks.
2.1. Identification of Assets and Operations Critical to NS Power's Mission and Mandate The assessment and assignment of the Criticality of an asset is fundamental to NS Power's approach to risk evaluation and decision‐making. Criticality...
AI summary NS Power assesses asset criticality based on impacts to health, environment, business sustainability, and reliability. Criticality is rated 1-5 using the Asset Management System Operating Procedure (NSPI-AMS-002). This aligns with the Capital Execution Justification Criteria (CEJC) and informs risk management and decision-making.
2026-2027 GRA Direct Evidence Appendix 3B Page 17 of 54 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Health & Safety Environment Business Sustainability Consequence Regulatory requirement breached. Critical safety incident requiring support...
AI summary The table outlines a criticality scale for incidents at NS Power, categorizing events based on health, environment, and business sustainability impacts. Consequences range from 'Critical' (e.g., fatalities, facility permit loss) to 'Minor' (e.g., first aid injuries, internal environmental releases). Factors like regulatory requirements, replacement energy costs, and system upgrades influence business sustainability rankings.
CCCMA: Canadian Centre for Climate Modelling and Analysis, Dynamically downscaled climate projections CMIP5: Coupled Model Intercomparison Project Phase 5, Global climate projections ERA5: European Centre for Medium-Range Weather Forecasts...
AI summary The text lists various climate modeling and environmental data sources, including projections from the Canadian Centre for Climate Modelling and Analysis, the European Centre for Medium-Range Weather Forecasts, and the World Resources Institute Aqueduct Floods. It also references tools like Landslide Hazard Assessment for Situational Awareness and the Canadian Wildland Fire Information System.
3.3. Selection of Key Climate Impacts for NS Power The extensive climate dataset developed through the physical climate risk analysis completed by Acclimatise is being incorporated into NS Power's assessment of climate impacts for its asse...
AI summary NS Power is incorporating a comprehensive climate dataset from Acclimatise into its assessment of climate impacts on its assets and operations. The dataset will inform NS Power's characterization of climate risks in its adaptation planning process. Table 3.5 outlines key potential climate impacts and their expected risk levels for NS Power's business units.
Asset Life Assessment An asset life assessment may be considered if drivers such as financial or regulatory requirements, or as described herein, significant anticipated climate impacts, do not support the other forms of risk mitigation ev...
AI summary Asset life assessments are conducted when factors like climate change or regulatory requirements make other risk mitigation strategies impractical. Outcomes may include refurbishment, replacement, or decommissioning, with decommissioning timelines potentially delayed. An example is a coastal power plant facing sea-level rise, necessitating decommissioning planning.
2026-2027 GRA Direct Evidence Appendix 3C Page 10 of 38 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Figure 3: Depiction of >200 hectares fires in Canada from 1980-2023 (NRCan)[2](#page-88-0) The NS Department of Natural Resources and Renew...
AI summary Nova Scotia experiences 225 average wildfires annually, primarily caused by human activities. Fire season runs March 15–October 15, with May being most active due to 'before green up' conditions. Wildfires correlate with population density, and only 3% are lightning-caused.
4.1 Fire Weather Forecasts In terms of near real-time wildfire risk, Nova Scotia Power leverages available wildfire forecasts and risk maps provided by the provincial government [(Fire Weather Forecast Maps and Indices ](https://novascotia...
AI summary Nova Scotia Power utilizes fire weather forecasts and risk maps from the provincial government, specifically the Department of Natural Resources and Renewables, which provides daily forecasts and Fire Weather Index (FWI) values from weather stations to assess wildfire risk.
6.3 Wildlife Protections In addition to interruptions, wildlife interaction with electrical equipment can lead to ignitions. Installation of bird and wildfire deterrents on structures and assets are used to reduce the
AI summary The text discusses wildlife interactions with electrical equipment leading to ignitions and mentions the installation of bird and wildfire deterrents on structures and assets as a mitigation measure. The focus is on reducing risks through protective measures.
Table 1. Wildlife Mitigation for NS Power Equipment System Wildlife Interaction Mitigation Used Substations Animals interfering with Installation of animal guards at some substations. These are the substation applied to reduce locations wh...
AI summary The document outlines NS Power's wildlife mitigation strategies for their electrical infrastructure, including the installation of animal guards, deterrents, and nest platforms to reduce wildlife interactions with substations, transmission lines, and distribution equipment.
7.0 Vegetation Management NS Power's electrical system is made up of over 32,000 km of power lines—the majority of which run along forested areas and tree lined roads. Each year, the Company's vegetation management team identifies work are...
AI summary NS Power invests increasing amounts in vegetation management to maintain power line reliability, using methods like trimming, removing trees, and herbicides. The 2023-2025 investment rose from $32M to $45M. They reference a 2025-2029 Five-Year Reliability Plan filed with NSUARB.
APPENDIX 5A 2026-2027 FUEL AND PURCHASED POWER
AI summary Appendix 5A outlines fuel and purchased power considerations for 2026-2027, referencing regulatory frameworks, cost recovery mechanisms, and energy management programs. It includes acronyms related to Nova Scotia's energy sector, such as DSM, FAM, and CRA, indicating focus areas like demand-side management, fuel adjustment, and compliance with environmental legislation.
TABLE OF FIGURES Figure 1 – Generation Fleet Capacity and Fuel Type 3 Figure 2 – 2025 Generation by Type 5 Figure 3 – 2026 Generation by Type 6 Figure 4 – 2027 Generation by Type 7 Figure 5 – 2024-2027 NS Power Fuel and Purchased Power Cos...
AI summary The document contains a table of figures related to generation fleet capacity, fuel types, and cost analysis for NS Power from 2024 to 2027, including emission allowance caps and forecasts for renewable energy compliance.
5 1.1.1 Solid Fuel 6 7 Although NS Power's reliance on thennal generation continues to decrease and the Nova Scotia 8 Government's legislated 1 goal to phase out coal-fired electricity generation by 2030, solid fuel 9 continues to comprise...
AI summary NS Power continues to rely on solid fuel despite decreasing thermal generation and the Nova Scotia Government's 2030 coal phase-out goal. Solid fuel remains a significant part of forecast requirements, with procurement from foreign suppliers and financial hedging strategies. Further details on procurement and hedging are outlined in Sections 1.2.2 and 1.4.
10 1.2.2 Solid Fuel Portfolio 11 12 fu accordance with its Fuel Manual, NS Power procures and manages a reliable and competitively 13 priced supply of fuel on a system-wide evaluated cost basis for its generation fleet, consistent with 14...
AI summary NS Power manages a solid fuel portfolio under its Fuel Manual, ensuring reliable and competitively priced fuel supply aligned with regulatory and environmental standards. The portfolio approach is detailed in standardized filing appendices.
REDACTED 2026-2027 GRA Direct Evidence Appendix 5A Page 17 of 38 REDACTED (CONFIDENTIAL INFORMATION REMOVED) - 1 Hedging of solid fuel positions will be based on the Company's Fuel Hedging Plan referred to - 2 below in Section 1.4 and set...
AI summary NS Power's Fuel Hedging Plan for 2025-2027, detailed in Section 1.4 and Appendix OE-01J, outlines financial and physical hedging strategies for solid fuels. The plan builds on the 2020-2022 plan and uses PLEXOS software for optimizing fuel portfolios while meeting environmental targets. Financial hedges cover coal purchases for 2025-2027, with data in Confidential 13.
12 1.2.4 Environmental Compliance 13 14 NS Power is required to manage air emissions within annual limits set by regulation. The air 15 emission compliance limits specified in the Air Quality Regulations 3 were amended November 16 21, 2014...
AI summary NS Power must manage air emissions under amended Air Quality Regulations, which set annual caps for SO2, NOx, and Hg, with references to figures and a fuel stability plan. Amendments were made in 2014, 2015, and 2020, with compliance limits outlined in Standard Filing OP-14.
8 1.2.5.1 Natural Gas – Cost Pressures 9 - 10 Forecast natural gas requirements for the period 2026-2027 are lower than the 2024 GRA Refresh - 11 for all years. Natural gas consumption over the GRA period decreases as new renewable project...
AI summary Natural gas demand forecasts for 2026-2027 are lower than 2024 GRA Refresh due to renewable projects. NS Power sources gas via TCPL, Saint John LNG, and Algonquin system. Long-term contracts with TCPL and Portland via NSPEMI provide 20,000 MMBtu/day for 15 years, enhancing stability, diversification, and reducing emissions.
Dear Dave Pickles: Thank you for your letter dated March 24, 2025, where you requested flexibility in the sulphur dioxide emission caps as written in the Air Quality Regulations. This correspondence is in response to the request for flexib...
AI summary The Minister approves a certificate of variance for NSPI to adjust sulphur dioxide emission caps, ensuring net-neutral environmental impact through a recovery plan. The decision is based on four factors: net-neutral emissions, over-emission recovery by 2034, cost stability for rate-payers, and grid reliability. The approval aligns with Section 61 of the Environment Act, which allows variances if they avoid adverse effects.
2026-2027 GRA Direct Evidence Appendix 5C Page 2 of 2 REDACTED (CONFIDENTIAL INFORMATION REMOVED) I look forward to seeing NSPI's progress towards minimizing SO2 emissions and working together on our shared goal of continuing to improve ai...
AI summary The Minister of Environment and Climate Change encourages Nova Scotia Power Incorporated (NSPI) to reduce SO2 emissions and collaborate on improving air quality in Nova Scotia.
2026-2027 GRA Direct Evidence Appendix 6A Page 10 of 10 REDACTED (CONFIDENTIAL INFORMATION REMOVED) recognition of retail suppliers; - Updates to section 3.2.17 to recognize the current emissions reduction program in NS (deleted references...
AI summary NS Power seeks approval for proposed changes to the Program of Adjustment (POA), including updates to emissions reduction program references, deletion of obsolete sections, and addition of a template for wind curtailment data reporting in response to a 2022-2023 FAM Audit Recommendation.
• Costs directly applied: - o Third Party Fuel Handling, Transportation (e.g movement between Long Term Dead Storage/Bear head and plants) and Maintenance related to Coal Piles - o Storage fees (e.g. lease, handling fees, facility fees) -...
AI summary The text lists direct costs associated with coal operations, including fuel handling, storage, environmental compliance, rail car maintenance, international pier operations, and ash hauling. These costs are categorized under operational and compliance expenses related to coal management and transportation.
2026-2027 GRA Direct Evidence Appendix 6B (Clean) Page 14 of 33 REDACTED (CONFIDENTIAL INFORMATION REMOVED) - Standby Emergency Response Services and third party compliance program - Third Party Supervision of Unloading - Transportation Co...
AI summary This section outlines various costs associated with transportation, compliance, and maintenance, including standby emergency response, third-party supervision, GHG emission compliance, ash hauling, and wharf maintenance.
3.2.10 Fuel – Mercury Sorbent - Additives Powder Activated Carbon (PAC) and Calcium Chloride - Transportation Costs - Costs relating to a Hg (mercury) Diversion Program that has been approved by the Minister of Environment under the Air Qu...
AI summary The section outlines costs related to mercury sorbent, including additives like PAC and Calcium Chloride, transportation expenses, and a mercury diversion program approved under the Air Quality Regulations. These costs are recorded in specific accounts in NS Power's Chart of Accounts.
3.2.17 GHG Emission Compliance Program Costs - The cost of Fund Credits under the Nova Scotia GHG Output Based Pricing System (OBPS) emissions compliance programs. - Transaction fees for purposes of purchasing GHG OBPS Fund Credits). Costs...
AI summary The document outlines costs related to GHG emission compliance programs in Nova Scotia, specifically the cost of Fund Credits under the OBPS and transaction fees for purchasing these credits. These costs are recorded in account 503400 under NS Power's Chart of Accounts.
Costs directly applied: - o Third Party Fuel Handling, Transportation (e.g movement between Long Term Dead Storage/Bear head and plants) and Maintenance related to Coal Piles - o Storage fees (e.g. lease, handling fees, facility fees) - o...
AI summary The document outlines specific costs directly applied, including third-party fuel handling, storage fees, environmental compliance fees, rail car costs, international pier operations, and ash hauling expenses. These costs are categorized under operational and maintenance activities related to coal, storage, emissions, and transportation.
3.2.5 Light Starter Oil - LFO (Light Fuel Oil) Commodity Consumed - Transportation Cost - Quality Testing and Inventory Measurement Costs - GHG Emission Compliance Program costs Costs of this type are normally recorded in the following acc...
AI summary The text outlines costs associated with Light Fuel Oil (LFO) including commodity consumption, transportation, quality testing, inventory measurement, and GHG emission compliance. These costs are recorded in NS Power's Chart of Accounts under code 502550.
3.2.10 Fuel – Mercury Sorbent - Additives Powder Activated Carbon (PAC) and Calcium Chloride - Transportation Costs - Costs relating to a Hg (mercury) Diversion Program that has been approved by the Minister of Environment under the Air Qu...
AI summary The section outlines costs related to mercury (Hg) sorbent, including additives like Powder Activated Carbon (PAC) and Calcium Chloride, transportation expenses, and a mercury diversion program approved under Nova Scotia's Air Quality Regulations (N.S. Reg. 28/2005). These costs are recorded in specific accounts within NS Power's Chart of Accounts.
3.2.17 GHG Emission Compliance Program Costs - The cost of emission allowances (Fund cCredits) under the Nova Scotia Cap-and- Trade program and GHG Output Based Pricing System (OBPS) emissions compliance programs. - Transaction fees for pu...
AI summary The text outlines costs related to GHG emission compliance programs in Nova Scotia, including emission allowances under the Cap-and-Trade program and OBPS, as well as transaction fees for allowance trading. These costs are recorded in NS Power's account 503400 'REG EMISSION ALLOWANCE EXPENSE'.
3.2.18 GHG Emission Compliance Program Revenue The revenue from the sale of emission allowances (credits) under the Nova Scotia Cap-and-Trade program or GHG emissions compliance programs. Revenues of this type are normally recorded in the...
AI summary This section outlines revenue generated from selling emission allowances under Nova Scotia's Cap-and-Trade program or other GHG compliance initiatives. Such revenues are recorded in NS Power's Chart of Accounts under the 'REG EMISSION ALLOWANCE REVENUE' account (5XXXXX).
N-72026-2027 GRA Appendix 8A-G -Depreciation Study - Redacted
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Generally transportable sediments with no significant 20% of the Pansic value industry 4 Generally granular sediments with industry 50% of the Pansic value 5 Generally transportable sediments with industry 100% of the Pansic value 6 Genera...
AI summary This document discusses the estimation of sediment management costs for reservoir sites, noting that sediment composition can only be determined through Environmental Site Assessments (ESAs) and sampling. The study builds on the 2018 report and excludes a detailed re-assessment of its criteria and methodology.
D (CONFIDENTIAL INFORMATION REMOVED) 2026-2027 GRA Direct Evidence Appendix 8B Page 15 of 33 Nova Scotia Power Inc. - Hydroplant Asset Study Update Hydro System Decommissioning Study Update - December 11, 2024 No major infrastructure was d...
AI summary The 2026-2027 GRA Direct Evidence Appendix 8B discusses an update to the Hydroplant Asset Study, noting no major infrastructure decommissioning and only minor changes since the previous study. Environmental costs were estimated using a matrix based on structure size and environmental concern scores, escalated to 2024 dollars.
shown in Table 4-1, where the Canada escalation factor is as described in Section 3. Table 4-1: Environmental Costing Matrix
AI summary The text references Table 4-1, which outlines an Environmental Costing Matrix, and notes that the Canada escalation factor is described in Section 3.
$ 6,600,000 1.23 $ 8,118,000 High $66,000,000 1.23 $81,180,000 Each dam was re-evaluated based on new information acquired since 2018, including information provided by David Walker of NSPI over email [4] on any contamination found on any...
AI summary The text discusses the re-evaluation of dams based on new contamination information, including updates to environmental concern scores at several sites. It also mentions changes to the Fisheries Act in 2019, which altered the criteria for requiring a Fisheries Act Authorization.
eational or aboriginal fishery to being triggered when fish or fish habitat were to be impacted. This new trigger would require site specific studies characterizing the aquatic H374195-0000-21A-249-0001, Rev. 0 Page 10 © Hatch 2024 All rig...
AI summary The document discusses the unchanged fisheries scoring from the 2018 study, as the new trigger for environmental or aboriginal fishery assessments was outside the scope of the current update. Site-specific aquatic habitat studies would be required under the new trigger.
habitat at each site and was, therefore, outside of the scope of this update. For this reason, all fisheries scoring were left unchanged from the 2018 study. After dams were re-evaluated and the matrix was updated to 2024 dollars, the envi...
AI summary The environmental management costs for the Roseway decommissioning were compared to an estimate from the updated matrix. Actual costs were found to be 11.5% higher than the estimated costs, but this was deemed an acceptable level of accuracy given the inherent uncertainties in estimating such costs.
environmental costs ROSEWAY Power Canal Dykes Impervious Fill concrete 15.4 518 65.4 62.5 unknown 518 4.7 50 1 1,957,817 1,957,817 2,408,115 1,759 included above included above included above 1,957,817 assume 20 foot wide base and 3:1 slio...
AI summary The text provides environmental cost data related to infrastructure projects at Roseway, including details on power canal dykes, saddle dams, and spillway embankment dams. It includes measurements, materials used, and cost figures for construction and maintenance.
sultation with local and Mi’kmaw communities, regulatory requirements (CCTH), as well as environmental requirements and engineering results, may also affect the costs presented in this document. It must be considered, the costings provided...
AI summary The costing study acknowledges that costs are based on incomplete data and may vary with real-world scenarios. Boreas Heritage notes that CCTH must determine if proposed areas overlap with archaeological concerns, which could affect final costs.
OVED) REDACTED 2026-2027 Direct Evidence Appendix 8C Page 18 of 129 Asset Location: Canoe Lake Dam Type: Small Dam; Earthfill The results of the 2018 Hydro Asset Archaeology Study indicate that area surrounding the Canoe Lake Dam exhibits...
AI summary The text discusses archaeological assessments required for three hydroelectric assets in Nova Scotia: Canoe Lake Dam, Canoe Lake Reservoir, and Falls Lake Dam. Each location is identified as having high potential for impacting archaeological resources, with recommendations for reconnaissance and monitoring. Costs for these assessments are estimated but unspecified.
nce Shovel Testing Excavation Monitoring Total Cost Aylesford Lake Drawdown Total System Cost Asset Location: White Rock Plant Type: Plant/Powerhouse The results of the 2018 Hydro Asset Archaeology Study indicate that area surrounding the...
AI summary The document discusses archaeological assessments required for the White Rock Plant, White Rock Dam and Spillway, and White Rock Pond due to high potential for impacting archaeological resources. The recommended actions include shovel testing and excavation, with estimated costs provided.
MATION REMOVED) REDACTED 2026-2027 Direct Evidence Appendix 8C Page 30 of 129 Asset Location: White Rock Pond Type: Dewatering The results of the 2018 Hydro Asset Archaeology Study indicate that White Rock Pond exhibits High Potential for...
AI summary The document discusses archaeological assessments required for three hydroelectric assets in Nova Scotia: White Rock Pond, Hells Gate Plant, and Hells Gate Dam and Spillway. Each site is identified as having high potential for archaeological resources, with no prior investigations conducted. Recommended actions include reconnaissance, shovel testing, and excavation, with estimated costs provided.
ORMATION REMOVED) REDACTED 2026-2027 Direct Evidence Appendix 8C Page 36 of 129 Asset Location: Methals Lake Type: Dewatering The results of the 2018 Hydro Asset Archaeology Study indicate that Methals Lake exhibits High Potential for arch...
AI summary The document discusses the potential for archaeological resources at Methals Lake and Little River Lake due to dewatering activities. Archaeological reconnaissance and excavation are recommended for both locations, with no prior investigations conducted. Costs for these assessments are estimated but not fully specified.
Fish Ladder Harmony Lake Drawdown Total System Cost Asset Location: Harmony Lake Dam Type: Small Dam; Earthfill embankment; Constructed on bedrock It should be noted that it appears the Harmony Lake Main Dam and Harmony Wing Dam are mislab...
AI summary The text discusses the archaeological potential around the Harmony Lake Main Dam, Harmony Wing Dam, and Harmony Plant, noting high potential for impacting archaeological resources. It also mentions that previous investigations were not conducted and recommends archaeological reconnaissance and testing, with estimated costs provided.
ON REMOVED) REDACTED 2026-2027 Direct Evidence Appendix 8C Page 55 of 129 Asset Location: Grand Lake Flowage Type: Dewatering The results of the 2018 Hydro Asset Archaeology Study indicate that Grand Lake Flowage exhibits High Potential fo...
AI summary The document discusses the need for archaeological assessments at two hydroelectric sites—Grand Lake Flowage and Lequille Plant—due to their high potential for impacting archaeological resources. No prior investigations were conducted, and the recommended actions include reconnaissance and excavation, with associated costs.
REDACTED 2026-2027 Direct Evidence Appendix 8C Page 61 of 129 Asset Location: Lower Great Brook Spillway and Wing Dam Type: Freeboard Dam (Spillway only) The results of the 2018 Hydro Asset Archaeology Study indicate that area surrounding...
AI summary The text discusses archaeological findings and implications for the Lower Great Brook Spillway and Dam. The 2018 study indicates high potential for impacting archaeological resources, though testing did not find any resources at the spillway. No further work is recommended for the spillway due to prior testing, but ongoing work at the dam may affect costing and requirements.
Asset Location: Big Falls Main Dam and Spillway Type: Large Dam; Earthfill with concrete core Spillway, Sluiceway and Bulkhead Dam constructed on bedrock The results of the 2018 Hydro Asset Archaeology Study indicate that area surrounding...
AI summary The Big Falls Main Dam and Spillway area has high archaeological potential, with previous studies identifying multiple precontact sites. Ongoing archaeological work will influence project costs and requirements, particularly near registered sites. Further reconnaissance, shovel testing, and excavation are recommended for unassessed areas and those near existing sites.
ed for this area. As the location is classified as a small, earthfill dam, the recommended course of action is archaeological reconnaissance followed by archaeological monitoring of the asset removal. It is estimated that the archaeologica...
AI summary The document outlines archaeological assessment recommendations for several hydro asset locations, including South Lake, D11-1 Dam, and D11-3 Dam. Each location is classified with specific dam types and potential impacts on archaeological resources. The estimated costs for these assessments are mentioned, though specific figures are redacted.
nce Appendix 8D Page 1 of 189 NSPI Power Production Sites Remediation Study Update Final Report August 26, 2024 Prepared for: Nova Scotia Power Inc. Prepared by: Stantec Consulting Ltd. File Number: 121418266 REDACTED (CONFIDENTIAL INFORMA...
AI summary This document is a final report on the remediation study update for NSPI Power Production Sites, prepared by Stantec Consulting Ltd. for Nova Scotia Power Inc. The report outlines its professional opinion based on available information and data at the time of preparation, with disclaimers regarding its use and limitations.
2026-2027 GRA Direct Evidence Appendix 8D Page 3 of 189 NSPI Power Production Sites Remediation Study Update August 26, 2024
AI summary This document is an update to the NSPI Power Production Sites Remediation Study, dated August 26, 2024, and is part of the 2026-2027 GRA Direct Evidence Appendix 8D.
s are estimated on the basis of completed questionnaires, drawings and report reviews. Hazardous materials, soil, groundwater, sediment and surface water sampling was not completed. 2 REDACTED (CONFIDENTIAL INFORMATION REMOVED) 2026-2027 G...
AI summary The document outlines the methodology for estimating remediation costs at NSPI power production sites, including the use of engineered landfill covers and consultation with NSPI and NSE for regulatory requirements. It references the CCME National Guidelines for decommissioning industrial sites.
ensure continued integrity; and 9. submission to the applicable regulatory agency, and other required jurisdictions, of a report confirming that decommissioning and cleanup has been completed. The CCME Guidelines provide a description of t...
AI summary The document outlines the process for decommissioning and remediation of NSPI power production sites, referencing the CCME Guidelines and Nova Scotia Environment Contaminated Sites Regulations (CSR). It discusses the evaluation of contamination levels and the development of probable cost estimates for decommissioning.
h Canoe Wind Farm 1, 072,000 17 Glen Morrison Quarry 4,508,000 Note: The South Canoe wind farm is 50% owned and operated by NSPI. NSPI would only be responsible for the remediation of 50% of the wind farm. 7 REDACTED (CONFIDENTIAL INFORMAT...
AI summary The document outlines the NSPI Power Production Sites Remediation Study Update, including references to environmental assessments and remediation studies conducted by various organizations. It highlights the ownership and remediation responsibility of the South Canoe Wind Farm by NSPI.
on, December 2018 CBCL, 2018, Phase II Environmental Site Assessment, Tufts Cove Generating Station, January 2018 CBCL, 2019, Site Specific Risk Assessment, Tufts Cove Generating Station, April 2019 CBCL, 2020, Additional Sampling Program...
AI summary The document outlines various environmental assessments and monitoring programs conducted at multiple generating stations in Nova Scotia, including Tufts Cove, Lingan, Trenton, and Bear Head Ash Site. These assessments include site-specific risk assessments, environmental site assessments, and groundwater monitoring programs, with reports dating from 2018 to 2024.
Proposed Nuttby Mountain Wind Farm Environmental Assessment, May 2008 CCME, 2001. Canadian Environmental Quality Guidelines. Accessed Online. Dillon, 2003, International Coal Pier Former Coal Unloading Facility 'BINS" Environmental Baselin...
AI summary The document outlines various environmental assessments and reports related to energy projects in Nova Scotia, including baseline assessments, reclamation plans, and monitoring reports from multiple sites such as the Nuttby Mountain Wind Farm and Lingan Generating Station.
r 1 EQS and Tier 2 Pathway Specific Guidelines, Accessed Online https://novascotia.ca/nse/contaminatedsites/docs/EQS-Contaminated%20Sites-Rationale-and- Guidance-NSE-2014.pdf., 9 REDACTED (CONFIDENTIAL INFORMATION REMOVED) 2026-2027 GRA Di...
AI summary The document lists various environmental protection plans and assessments related to wind farms and power production sites in Nova Scotia, including studies and reports conducted by NSPI, Stantec, Strum, and WSP. These documents provide information on environmental impact assessments, remediation studies, and site evaluations.
on, v.ithout actual field data. A Contingency Factor of 25% on the sub-total is included. Scrap value of rail cars not included ()stantec \\ca0213-pplss01\warK..,group\1214\aclive\121418266\05_report,_deliverable\dral._doc\Site13_2024 Es'l...
AI summary The document provides an update on the NSPI Power Production Sites Remediation Study, including details on wind sites and a quarry site. It includes a contingency factor and mentions the exclusion of rail car scrap value.
0 General Preparation (Planning, Permits, Co-ordination with Regulators etc.) 184,500 Costs associated with regulatory/potential Environmental Assessment support during demolition phase. No sianificant chanae from 2020 estimate· therefore...
AI summary The text outlines costs related to general preparation, including regulatory and environmental assessment support during the demolition phase, with a focus on Phase 1 - Site Information Assessment. A 2018 Phase 1 ESA was completed, and only a review and potential HAZMAT assessment are needed now.
any gaps, and incorporate findings into Phase II development. Estimate $40,000 for a HAZMAT assessment. 202.4• P,evious conclusions emain valid r.ost undated to 20?<1 costs baserl on ;nflation farto 122 Phase 2 - Development of Reconnaissa...
AI summary The text outlines the completion of a Phase 2 Environmental Site Assessment (ESA) by CBCL in 2019, and discusses the estimated costs for reviewing previous investigations and incorporating findings into Phase 3 development, as well as a HAZMAT assessment.
dress any gaps, and incorporate findings into Phase 3 development. 2024: Previous conclusions remain valid. Cost uodated to 2024 costs based on inflation factor. 123 Phase 3 - Detailed Testing Program 120,000 A detailed testing program has...
AI summary The document discusses the need for a detailed testing program at the Lingan site, highlighting that while some risks have been assessed, additional sampling is required for groundwater and surface water/sediment exceedances. Costs have been updated to 2024 levels based on inflation.
unacceptable risks to aquatic receptors and additional sampling was recommended. Estimate 8 additional monitoring wells to further assess elevated GW metals concentrations, and sampling of existing MWs on site (45). Estimate 5 SW and 5 sed...
AI summary The text discusses the need for additional environmental sampling to assess risks to aquatic receptors, including the installation of monitoring wells and collection of water and sediment samples from various locations around the site.
PHCs, VOCs, and PCBs based on previous investigations completed. 124 Phase 4 - Preparation of Decommissioning and Clean-<Jp Plans 50,000 The 2021 RA and RMP will need to be updated following review of the Phase 1/11 ESA and completion of t...
AI summary The document outlines the preparation of decommissioning and clean-up plans for the Lingan Generating Station, including the need to update the 2021 Risk Assessment (RA) and Remedial Action Plan (RMP) based on previous investigations and ESA phases. An estimated $50,000 is allocated for reviewing assessments and updating plans.
DATE: Jul-24 Account Estimated Cost: Item Description Assumptions/ Notes: 2024 Code July 2024 125 Phase 5 - lmolementation of Decommissionina and Clean-uo Plans: Preparation of Specifications and Tender Documents, Contractor Selection 246,...
AI summary The text outlines the estimated cost of 246,000 for the preparation of specifications and tender documents for the implementation of decommissioning and clean-up plans at the LAMS site and Lingan generating station. The costs are related to capping of active containment cells, excavation of contaminated sediment, and soil capping/soil removal based on recent assessments.
capping/soil removal based on results of the TGS SSRA. Since then, an SSRA was conducted at the LGS and concluded that metals impacts in soil do not pose a significant risk to ecological or human receptors. As such, it is assumed that cost...
AI summary The text discusses the remediation activities at the LGS and LAMS sites, including soil removal based on SSRA results, worker safety monitoring during decommissioning, and construction of containment facilities due to potential contamination from past spills. Costs are estimated based on previous data and inflation factors.
excavation/disposal (i.e., potential PHC impacts in undelineated tranformer spill in 2016). It is assumed that the LAMS site is still an active containment site and the existing containment cells at the LAMS site can accommodate contaminat...
AI summary The text discusses the ongoing containment at the LAMS site, noting that it is still active and capable of handling contaminated materials from Phase 3 ESA or decommissioning activities, with no need for additional containment facilities.
Handling of Wastewater and Surface Drainage 455,667 Existing WWTP would remain operational until both the LGS site and the LAMS site were capped in order to treat unoff from uncapped containment cells in the LAMS and runoff from the coal s...
AI summary The document outlines the handling of wastewater and surface drainage at the LGS and LAMS sites, including operational timelines, additional management costs, and inflation adjustments. It also discusses fugitive atmospheric emissions control and the removal and disposal of materials and residues, with associated costs.
DATE: Jul-24 Account Estimated Cost: Item Description Assumptions/ Notes: 2024 Code July2024 Excavation of Contamminated Soils and Sediments 4,095,900 It is assumed that any potentially contaminated soil encountered in previously unassesse...
AI summary The estimated cost for excavating contaminated soils and sediments at the LAMS site in July 2024 is $4,095,900. The cost assumes that contaminated soil will be disposed of in existing containment cells, with no additional disposal costs. Only excavation and transport to LAMS containment cells are included. Metals in surface soil will remain in place, and a small amount of PHC-impacted material will be excavated and placed in LAMS. The total volume estimated is 15,000 m3.
potential risk and is more economical than installing an engineered cap or excavating and disposing of the soil. Additional fill, grading and seeding will be required in areas where PHC and/or PHC-impacted soil was excavated. Additional fi...
AI summary The text discusses cost-effective remediation strategies for contaminated sites, including the use of additional fill, grading, and seeding, as well as monitoring requirements for decommissioning activities. It mentions the need for sampling and inflation adjustments to 2020 estimates.
under the Worker Health and Safety Monitoring and Control of Fugitive Atmospheric Emissions sections. No sianificant chances to the 2020 estimate· therefore aoolv inflation factor. 126 Phase 6 - Confiratory Sampling and Completion Reportin...
AI summary The text discusses environmental consulting, site coordination, and sampling activities related to the decommissioning of the Lingan Generating site. It references the need to update Risk Assessments and RMP following decommissioning and applies an inflation factor to 2020 estimates for cost projections.
diation. Costs include presentation of final reports, Record of Site Condition, legal costs, etc. No sianificant chanaes to the 2020 estimate· therefore aoolv inflation factor. Long Term Monitoring 451,800 Cost for semi-annual groundwater...
AI summary The text outlines costs related to long-term monitoring and liability for the LGS and LAMS sites, including groundwater monitoring, reporting, and communication regarding impacts. The estimates are based on updated unit rates from 2024 and assume monitoring over 5 and 10 years respectively.
years (e.g., communication related to results of LTM following decommissioning and remediation). No sianificant chanae to 2020 estimate therefore aoolv inflation factor. Future Controls of Land Use 50,000 Assume land use remains industrial...
AI summary The text outlines future land use controls and site access removals, including assumptions about industrial land use under NSPI ownership, ongoing fence maintenance costs, and specific costs for access roads, railways, and wharves. It also mentions the inclusion of remediation costs and inflation factors in liability estimates.
. Assume no change to 2020 estimate; apply inflation factor. 121 Phase 1 -Site Information Assessment 55,350 2020: A comprehensive Phase 1 ESA was completed by CBCL in 2018 in accordance with NSE Phase 1 Protocol (PRO- 300); therefore, a f...
AI summary The text discusses the costs associated with environmental site assessments, including a Phase 1 ESA review and a potential Hazmat survey. It mentions that a Phase 1 ESA was completed in 2018 and that an estimate of $10,000 is needed to review it and address any gaps.
2024: Previous conclusions remain valid. Cost uodated to 2024 costs based on inflation factor. 122 Phase 2 - Development of Reconnaissance Testing Program 160,000 No Phase II has been completed yet for the POA site. Currently, 6 MWs exist...
AI summary The text discusses the continuation of previous conclusions with updated costs for 2024, and outlines the need for additional environmental sampling and testing at the POA and CFB sites, including areas related to fuel storage, chemical storage, and wastewater treatment.
tanks, Hayley's Pond, drainage ditch from CFB area to ocean). At the POA site, estimate 5 new monitoring wells (MWs) with associated soil sampling, 20 test pits (TPs), 25 surface soil (SS) samples, 2 sediment and surface water (SW) samples...
AI summary The text outlines sampling and monitoring activities at the POA and CFB sites, including the installation of monitoring wells, soil and water sampling, and analysis for contaminants such as metals, PHCs, PAHs, VOCs, and PCBs.
s Pond for analysis of metals, PHCs, PAHs, VOCs, and PCBs. Used same methodology as 2020 estimate, but updated with 2024 unit rates. 123 Phase 3 - Detailed Testing Program 140,000 No Phase II has been completed for the POA site. Detailed t...
AI summary The text discusses a detailed testing program for the POA site, including sampling of multiple locations for analysis of various contaminants such as metals, PAHs, PHCs, VOCs, and PCBs. The estimate is based on updated 2024 unit rates and includes efforts for Phase III reporting and review of previous ESAs.
o review Phase 1/11 ESAs, and effort for Phase Ill reporting. Used same methodoloav as 2020 estimate but uodated with 2024 unit rates. 124 Phase 4 - Preparation of Decommissioning and Clean-up Plans 159,900 2020: A risk assessment will nee...
AI summary The text discusses the preparation of decommissioning and clean-up plans, including the development of a risk assessment to evaluate human health and ecological risks based on contaminants identified in earlier environmental site assessments. It outlines the need for a Human Health and Ecological Risk Assessment (HHERA) and estimates costs for different types of risk assessments.
k assessment related to freshwater and terrestrial receptors. 2024: Previous conclusions remain valid. Cost updated to 2024 costs based on inflation factor. (j Stantec \\ca0213 ppfss01\work_group\1214\active\121418266\05_report_deliverable...
AI summary The text discusses a cost study related to environmental assessments at the Point Aconi Generating Station, with updated costs for 2024 based on inflation factors. The document is part of a larger estimate and includes a reference to a draft report.
DATE: 1-Jul-24 Account Estimated Cost: Item Description Assumptions/ Notes:2024 Code July 2024 125 Phase 5 - lmolementation of Decommissionina and Clean-uo Plans: Preparation of Specifications and Tender Documents, Contractor Selection 100...
AI summary This text outlines the estimated cost for preparing specifications and tender documents for the implementation of decommissioning and clean-up plans at the CFB residue management area and POA generating station, including various environmental and structural considerations.
ture assessment work will be similar to those encountered at the LGS and TGS.
AI summary The text indicates that the nature of assessment work will be comparable to that encountered at the LGS and TGS sites.
A specification package for the capping of CFB residue management Cell 4 has already been prepared. Therefore, assume that costs associated with the preparation of specifications and tender documents related to soil removal, construction o...
AI summary The text discusses the preparation of a specification package for capping CFB residue management Cell 4 and the associated cost assumptions, as well as worker safety and health monitoring requirements during decommissioning. It also mentions the construction of on-site containment facilities and the handling of contaminated soil.
excavation/disposal. During the June 2020 site visit, it was noted that a new containment cell (Cell 5) was being constructed; therefore, it is assumed that containment Cells 4A/4B and 4 at the CFB Residue Management Area can accommodate c...
AI summary The document discusses the management of contaminated soil and sediment from Phase II and Phase III ESAs at the CFB Residue Management Area, noting the construction of a new containment cell (Cell 5) and the continued operation of the existing wastewater treatment plant for one year. It also mentions minimal runoff issues due to an existing surface water collection system.
iated with surface drainage management such as silt fencing, oil booms in harbour, and diverting existing drainage pathways during construction /decommissioning activities since the site already had a good surface water collection system....
AI summary The text discusses measures for managing surface drainage and controlling fugitive atmospheric emissions. It mentions existing systems and equipment, as well as additional costs for dust suppression and air monitoring. No significant changes are noted from 2020 estimates, and an inflation factor is applied.
liquids in caustic tanks, water treatment systems and fuel systems, plus proper disposal. No sicnificant chance from 2020· therefore aoolv inflation factor. Excavation of Contamminated Soils and Sediments 369,000 It is assumed that any pot...
AI summary The text discusses the excavation and disposal of contaminated soils and sediments, estimating costs based on previous data and applying an inflation factor. It assumes that contaminated soil will be disposed of in existing containment cells, with costs limited to excavation and transport.
R Fl""A"''"' A.I ·- - •-:�:.. COST STUDY ?n?A LOCATION: POINT ACONI GENERATING STATION DATE: 1-Jul-24 Account Estimated Cost: Item Description Assumptions/ Notes:2024 Code July 2024 Reclamation Measures 8,954,400 An engineered cap will be...
AI summary The document outlines the estimated cost for reclamation measures at the Point Aconi Generating Station, including an engineered cap for containment cells and Pond 7A, based on NSPI rates from the Abercrombie Ash Management Site.
Additional fill, grading, seeding and siltation contols required in other areas of the site. No sicnificant chance to 2020 estimate· therefore aoolv inflation factor. In-Program Contaminant Monitoring 130,000 Assume additional sampling of...
AI summary The text outlines additional environmental monitoring and control measures required during decommissioning activities, including sampling of wells, soil, and surface water, as well as air sampling covered under other sections. An inflation factor is applied to 2020 cost estimates.
rker Health and Safety Monitoring and Control of Fugitive Atmospheric Emissions sections. Used same methodoloav as 2020 estimate but uodated with 2024 unit rates. 126 Phase 6 - Confiratory Sampling and Completion Reporting 182,267 Environm...
AI summary The text discusses decommissioning activities, including environmental consulting, sampling, and risk assessments, with costs estimated based on updated unit rates. It also mentions the development of a risk management plan and regulatory approvals required for decommissioning completion.
.g., communication related to results of LTM following decommissioning and remediation). No sianificant chance to 2020 estimate therefore aoolv inflation factor. Future Controls of Land Use 50,000 Assume land use remains industrial under N...
AI summary The text discusses future land use controls and associated costs, including assumptions about site access removals, fence maintenance, and sediment and erosion control. It outlines an estimate of $50,000 for ongoing fence maintenance and $21,771 for sediment and erosion control.
18,227 chemicals included in remediation section 375 Condensate Polishing (LP. Feedwater) (including Chemicals) 32,808 (j Stantec \\ca0213 ppfss01\work_group\1214\active\121418266\05_report_deliverable\draft_doc\Revised_Draft\Site2_2024 Es...
AI summary The text references a cost study for the Point Aconi Generating Station, including 18,227 chemicals involved in remediation, and mentions a document related to a 2026-2027 GRA Direct Evidence Appendix 8D.
oi:::t"'I.I.TION COST STUDY ?n?A LOCATION: TUFT'S COVE THERMAL GENERATING STATION DATE: Jul-24 Account Item Description Assumptions/ Notes:2024 Code 12 SITE REMEDIATION ISSUES 6,195,212 120 General Preparation (Planning, Pennits, Co-ordina...
AI summary The document outlines site remediation costs at Tuft's Cove Thermal Generating Station, including expenses for regulatory coordination and environmental assessments. The costs are based on 2020 estimates adjusted for inflation.
te lnfonnation Assessment 63,397 Costs associated with an Updated Phase I Environmental Site Assessment and HAZMAT Sampling Program. No significant change from 2020 estimate; therefore, apply inflation factor. 122 Phase 2 - Development of...
AI summary The document outlines environmental assessment costs for three phases, including an updated Phase I Environmental Site Assessment, a reconnaissance testing program, and a detailed testing program involving sampling and analysis of soil, sediment, and water for various contaminants.
2020 estimated as significant site investigation and risk assessment was completed during that time. No significant change since 2020; therefore, apply inflation factor. 125 Phase 5 - lmolementation of Decommissionina and Clean-uo Plans: P...
AI summary The text discusses the 2020 phase of decommissioning and clean-up plans, noting that significant site investigation and risk assessment were completed. No significant changes since 2020 are mentioned, and an inflation factor is applied. The phase involves preparation of specifications, contractor selection, and limited HAZMAT removals.
significant change since 2020; therefore, apply inflation factor. Worker Safety and Health Monitoring See Right Air monitoring for voe, PAH, silica, hydrocarbons, dust and asbestos will be required prior to and during decommissioning the p...
AI summary The text discusses environmental and safety considerations related to decommissioning a plant, including worker safety monitoring, construction of containment facilities, and handling of wastewater and surface drainage. It notes that some costs are assumed to be covered under existing line items and that certain requirements have not changed since 2020.
soil is not expected, therefore the controls will remain reduced compared to 2010 estimate. No significant change since 2020 estimate; therefore, apply inflation factor. Control of Fugitive Atmospheric Emissions 109,360 Control with wettin...
AI summary The text discusses controls for fugitive atmospheric emissions, noting that no significant changes have occurred since the 2020 estimate, and thus an inflation factor should be applied. Dust suppression using wetting products and air monitoring for contaminants like TSP and PAH are mentioned.
estimate, plus an additional $3,300,000 for decommissioning the HFO tanks (60', 80', 100', 220' diameter ASTs). Excavation of Contamminated Soils and Sediments 492,000 Results of SSRA indicated risks to human and terrestrial ecological rec...
AI summary The text discusses the costs associated with decommissioning HFO tanks and the potential need for soil excavation and remediation due to contamination. It highlights that while some risks are acceptable, excavation of contaminated soil may be necessary in certain areas.
18,227 369 Coal Mill lnerting System (Steam and CO2) Not relevant 37 ASH AND WATER TREATMENT SYSTEMS REMOVALS 191,380 370 General 9,113 371 Unit Ash Handling System (may include Magnesium Hydroxide Injection) 54,680 372 Station Ash Handlin...
AI summary The text outlines various systems and associated costs related to coal mill inerting, ash handling, and environmental treatment systems, including pretreatment, demineralizer plants, and condensate polishing, with some costs linked to environmental remediation.
(including Chemicals) 27,340 chemicals covered under environmental remediation section 38 ENVIRONMENTAL SYSTEMS REMOVALS 380 FGD System (Flue Gas Desulfurisation) (Point Aconi only) na 385 Limestone Handling and Storage System na 386 Gypsu...
AI summary The text provides a breakdown of costs related to the removal of environmental systems and turbo-generator components at a facility. It lists specific systems such as FGD, limestone handling, and gypsum handling, as well as turbine and generator removal costs. The document outlines various cost categories and their associated amounts.
1.23 Factor for Up-dating from July 2020 TO 2024 100's 12 SITE REMEDIATION ISSUES 1,145,315 120 General Preparation (Plannino, Permits, Co-ordination with Reoulators etc.) 9,113 Meetinos, correspondence, site plans. No sionificant chanoe s...
AI summary The text outlines site remediation costs and activities from July 2020 to 2024, including preparation, site information assessment, reconnaissance testing, and detailed testing programs for environmental contaminants such as PHCs, PAHs, and PCBs.
, estimate 4 surface water and 4 sediment samples for PHCs, PAHs, and metals.
AI summary The text mentions the need to estimate 4 surface water and 4 sediment samples for PHCs, PAHs, and metals, indicating environmental sampling requirements.
wet land. No significant change since 2020; therefore, apply inflation factor. Control of Fuaitave Atmosoheric Emissions NA Removal and Disposal of Materials and Residues 290,000 LFO tanks - 43' diam: 80k/tank ; 1Ok for smaller tanks -Tank...
AI summary The text discusses environmental compliance activities related to land remediation, including the control of atmospheric emissions, removal and disposal of materials, excavation of contaminated soils, remediation measures, and in-program contaminant monitoring. Inflation factors are applied due to no significant changes since 2020.
therefore apply inflation factor. In-Program Contaminant Monitoring 12,300 Environmental consulting, site coordination/supervision during decommissioning, soil and water sampling during decommissionina/excavation. No sianificant chanae sin...
AI summary The text outlines various costs related to environmental monitoring and decommissioning activities, including site remediation, sampling, and regulatory approvals. Inflation factors are applied to most items due to no significant changes since 2020.
369 Coal Mill lnerting System (Steam and CO2) 37 ASH AND WATER TREATMENT SYSTEMS REMOVALS does not apply to this site 370 General 371 Unit Ash Handling System (may include Magnesium Hydroxide Injection) 372 Station Ash Handling System 373...
AI summary The text outlines various systems and components related to coal mill inerting, ash handling, wastewater treatment, environmental systems, and turbine-generator removals at a site, with specific details on costs and applicable systems.
2026-2027 GRA Direct Evidence Appendix 8D Page 113 of 189 ·- SITE -,;::,,- - :�lnNINI':: ;::_:::;.T;,_:.,TE WO- . i:n � CIIJAl.lt'IAI -, .. _ :1.1\TION COST STUDY ?n?.t TUFTS COVE LM6000 Units (2) Plus WHR Boiler and LOCATION: Steam Turbin...
AI summary The document discusses site remediation issues at the Tufts Cove LM6000 Units (2) Plus WHR Boiler and Steam Turbine Generator location, with an estimated cost of $590,624 for the year July 2024.
1.2300 100'5 SITE REMEDIATION ISSUES: 12 SITE REMEDIATION ISSUES 590,624 120 General Preparation (Planning, Permits, Co-ordination with Regulators etc.) 29,028 Based on preparation, meeting, project updates, etc. No significant change sinc...
AI summary The text outlines site remediation issues, including general preparation, phase 1 site information assessment, and phase 2 reconnaissance testing program for Tufts Cove Thermal Generating Station. It notes that no significant changes have occurred since 2020 and inflation factors are applied.
123 Phase 3 - Detailed Testing Program 24,215 Assess areas of concern identified in the document review. Assume 5 additional test pits in unassessed areas (i.e., building foot prints) and soil sampling for metals, PAHs, PHCs, VOCs, PCBs. S...
AI summary The text outlines a phased approach for detailed testing, preparation of decommissioning and clean-up plans, and implementation at Tuft's Cove Thermal Generating Station, including site investigations, risk assessments, and cost estimates based on updated 2024 unit rates and an inflation factor.
- Preparation of Specifications and Tender Documents, Contractor Selection 12,300 See Tuft's Cove Thermal Generating Station estimate, significant remediation of soil and groundwater at the site is not expected based on the results at the...
AI summary The text outlines various aspects of a project, including the preparation of specifications, worker safety, construction of containment facilities, and management of wastewater and emissions. Inflation factors are applied due to no significant changes since 2020.
ance since 2020· therefore aoolv inflation factor. Control of Fugitave Atmospheric Emissions -
AI summary The text discusses the control of fugitive atmospheric emissions and mentions the application of an inflation factor since 2020. It references regulatory considerations related to environmental compliance.
sionificant chanoe since 2020; therefore, aoolv inflation factor. Long Term Monitoring 120,435 Semi-annual groundwater monitoring for metals, PHCs, and PAHs at 3 existing wells at the LM6000 for 5 years. Used same methodology as 2020 but w...
AI summary The text discusses a long-term monitoring plan for groundwater at the LM6000 site, including semi-annual monitoring for metals, PHCs, and PAHs at three existing wells over five years, using updated 2024 unit rates. It also references liability assumptions related to land use and remediation costs under NSPI ownership.
·- . i:n � CIIJAl.lt'IAI -, .. _ :1.1\TION COST STUDY ?n?.t SITE -,;::,,- - :�lnNINI':: ;::_:::;.T;,_:.,TE WO- TUFTS COVE LM6000 Units (2) Plus WHR Boiler and LOCATION: Steam Turbine Generator DATE: Julv 2024 Account Estimated Cost: Item D...
AI summary The text presents a cost study for a project at Tufts Cove, including details about future land use and its impact on environmental risk assessments. It outlines assumptions related to industrial land use and groundwater usage, and notes potential changes that could affect the validity of the study.
7,257 Small site, but safety issues will need to be monitored and implemented by NSP or a consultant. No significant chanae since 2020; therefore, applv inflation factor. Construction of On-Site Containment Facilities NA Handling of Wastew...
AI summary The document outlines various environmental and safety considerations for a project, including the need for containment facilities, wastewater handling, and the removal of contaminated materials. It notes that some costs have been updated based on inflation and cleaning requirements, while others remain uncertain due to lack of environmental assessments.
Semi-annual groundwater monitoring at 6 of the estimated 8 existing wells for 5 years for PHCs. Estimate includes reporting and coordination with reaulators. Used same methodology as 2020 but with updated 2024 unit rates. Liabilitv 50799 N...
AI summary The text discusses semi-annual groundwater monitoring at 6 of 8 existing wells for 5 years, with an estimate that includes reporting and coordination with regulators. The methodology used is the same as in 2020, but with updated 2024 unit rates. No significant changes have been noted since 2020, and an inflation factor is applied.
2026-2027 GRA Direct Evidence Appendix 8D Page 124 of 189 SITE •- - �"',lnNINt: · •,TE wn - 1 �nR Clt.lAt.lt"IAI • :lATION COST STUDY ?n?.t LOCATION: TUSKET GENERATING STATION (COMBUSTION TURBINE) DATE: 7/15/224 Account Estimated Cost: Jul...
AI summary This document is a cost study related to the removal of ash and water treatment systems at the Tuskett Generating Station, including various subsystems and associated estimated costs for the year 2024.
for Up-dating from July2020 to2024 100's SITE REMEDIATION ISSUES: 12 SITE REMEDIATION ISSUES 799,613
AI summary The text mentions site remediation issues with a financial value of 799,613, likely related to environmental or regulatory concerns in Nova Scotia.
125 Phase 5 - Implementation of Decommissioninq and Clean-up Plans: Preparation of Specifications & Tender Documents Contractor Selection 7 925 No significant change since 2020; therefore, apply inflation factor. Worker Safety and Health M...
AI summary The document outlines the costs and considerations for Phase 5 of a decommissioning and clean-up plan, including worker safety, containment facilities, wastewater handling, and excavation of contaminated soils. Inflation factors are applied due to no significant changes since 2020.
and incorporating findings into Phase 2 development. Additional costs assumed for a HAZMAT survey. No chance since 2020· therefore aoolv inflation factor. 122 Phase 2 - Development of Reconnaissance Testing Program 110,000 A Phase 2 assess...
AI summary The text discusses the need for a Phase 2 Environmental Site Assessment (ESA) at the PTMT site due to the expansion of the coal pile and the introduction of new NSE protocols. It notes that the 2004 assessment identified 7 MWs, but their current existence is unknown. A new ESA is estimated to include 15 MWs, 10 TPs, 10 SS samples, 5 sediment samples, and 4 SW samples, analyzed for various contaminants.
s will be analyzed for BTEX/TPH, PAHs, metals, VOCs and PCBs. Used same methodoloov as 2020 but with uodated 2024 unit rates. 123 Phase 3 • Detailed Testing Program 70,000 Detailed testing in the area including sampling of the existing MWs...
AI summary The text describes a detailed testing program for Phase 3, which includes sampling of monitoring wells, test pits, surface soil, and sediment to analyze contaminants such as BTEX/TPH, PAHs, metals, VOCs, and PCBs using updated 2024 unit rates.
10 SS samples, 5 sediment samples and 3 SW samples for analysis of metals, BTEX/TPH, PAHs, VOCs and PCBs.
AI summary The text mentions the collection of 10 surface soil samples, 5 sediment samples, and 3 seawater samples for the analysis of various contaminants including metals, BTEX/TPH, PAHs, VOCs, and PCBs.
Used same methodoloav as 2020 but with uodated 2024 unit rates. 124 Phase 4 - Preparation of Decommissioning and Clean-up Plans 159,900 A risk assessment will need to be developed to determine human health and ecological risks based on the...
AI summary The text discusses the preparation of decommissioning and clean-up plans for a site, noting the need for a risk assessment based on contaminants identified in earlier phases. It references similar issues at other NSPI sites and estimates the cost for marine risk assessment at $80,000.
No chance since 2020· therefore aoolv inflation factor. Worker Safety and Health Monitoring See Righi Air monitoring not anticipated during remediation of TRMC since remedial activities are expected to be minimal. Construction of On-Site C...
AI summary The text discusses the remediation of the TRMC site, noting that air monitoring is not anticipated due to minimal remedial activities. It also mentions the potential for encountering PHC-impacted soil during assessments and decommissioning, as well as concerns about leaching into groundwater due to the natural liner at the coal pile area.
l not be used for containment of contaminated soils, and the material will need to be transported off site for proper disposal. There will be no cost associated with construction of on-site containment facilities. No chance from 2020. Hand...
AI summary The document discusses the handling of wastewater and surface drainage at the PTMT site, including the operational costs of the WWTP and potential expenses for ditching, siltation controls, and water quality testing during site decommisioning. Inflation adjustments are applied for 2024.
LOCATION: MARINE TERMINAL POINT TUPPER DATE: 15-Jul-24 Account Estimated Cost: Item Description Assumptions/ Notes:2024 Code July 2024 Control of Fugitive Atmospheric Emissions 50,000 Existing air monitoring equipment would remain in place...
AI summary The text outlines two cost estimates related to environmental management at the Marine Terminal Point Tupper. The first involves controlling fugitive atmospheric emissions with a $50,000 allocation for dust suppression systems. The second covers the removal and disposal of materials and residues, estimated at $39,623, based on 2020 costs adjusted for inflation.
nth duration of the project. Used same mathodology as 2020 but with updated 2024 unit rates. 126 Phase 6 - Confinnatory Sampling and Completion Reporting 95,096 Environmental consulting, site coordination/supervision, Project Management is...
AI summary The text discusses Phase 6 of a project involving confirmatory sampling and completion reporting, including environmental consulting, site coordination, and risk assessments. It also mentions miscellaneous considerations such as regulatory approvals and legal costs associated with decommissioning, using updated 2024 unit rates and an inflation factor.
ation. Costs include presentation of final reports, Record of Site Condition, legal costs, etc. No chance since 2020· therefore aoolv inflation factor. Long Term Monitoring 230,000 Cost for semi-annual groundwater monitoring from 15 select...
AI summary The text outlines costs related to long-term monitoring and liability assessment for a site, including legal costs and groundwater monitoring over a 5-year period, with updated unit rates from 2024.
sediment samples and 3 SW samples for analysis of metals, BTEX/TPH, PAHs, VOCs and PCBs. Used same methodology as 2020 but with updated 2024 unit rates. 124 Phase 4 - Preparation of Decommissioning and Clean-up Plans 159,900 A risk assessm...
AI summary The text discusses the collection of sediment and surface water samples for analysis of contaminants such as metals, BTEX/TPH, PAHs, VOCs, and PCBs. It mentions the use of updated 2024 unit rates and the need for a risk assessment to evaluate human health and ecological risks based on contaminants identified in previous assessments.
g See Right Air monitoring not anticipated during remediation of Transportation Corridor since remedial activities are expected to be minimal. Construction of On-Site Containment Facilities It is assumed that a small amount of PHC-impacted...
AI summary The text discusses the remediation of a transportation corridor and the assumption that only a small amount of PHC-impacted soil will be encountered during Phase 2 and Phase 3 assessments and decommissioning activities. It notes that no on-site containment facilities will be constructed, as the material will be transported off-site for disposal, with no change from 2020.
with construction of on-site containment facilities. No change from 2020. Handling of Wastewater and Surface Drainage 30,750 It is unlikely that the settling ponds would need to remain operational during site decommissioning activities. St...
AI summary The document discusses wastewater and surface drainage management at a site, noting that settling ponds may not need to remain operational during decommissioning. It mentions the need to excavate and dispose of contaminated sediment, with water in the ponds historically meeting NSE guidelines for TSS, TPH, and pH. The estimate for this activity will be covered under another line item, and no changes since 2020 mean an inflation factor should be applied.
ESTIMATE WORKSHEET FOR FINANCIAL DEPRECIATION COST STUDY 2024 SYDNEY INTERNATIONAL COAL PIER Account Estimated Cost: Item Description Assumptions / Notes: 2024 Code July 2024 Control of Fugitive Atmospheric Emissions 75,000 Existing air mo...
AI summary The document provides an estimate for the cost of controlling fugitive atmospheric emissions during the decommissioning of the Sydney International Coal Pier in 2024, with an estimated cost of $75,000. This includes the use of existing air monitoring equipment and dust suppression systems during coal pile excavation and equipment cleaning.
ence line with TSP (PM 2.5 and 10 ), voe and PAH over duration of decommissioning activties. Removal and Disposal of Materials and Residues 12,300 For removal of fuel residues from aboveground storage tanks and waste oil tank, removal of o...
AI summary The text discusses the removal and disposal of materials and residues at a site, including fuel residues, waste oil, and stored petroleum products. It estimates that the cost will be much lower than at other NSPI sites due to minimal piping systems and limited storage of chemicals.
quired in other areas of the site. No change since 2020; therefore, apply inflation factor. In-Program Contaminant Monitoring 40,000 Assume additional sampling of 15 existing wells once during decommissioning activities. Assume 15 soil sam...
AI summary The text discusses the costs associated with in-program contaminant monitoring, including sampling activities and reporting. It mentions the need for additional sampling during decommissioning and considers inflation adjustments based on 2020 data.
the harbour for 3-month duration of project. Costs indude sampling activities and reporting. Used same methodology as 2020 but v.ith updated 2024 unit rates. 126 Phase 6 - Confiratory Sampling and Completion Reporting 86,100 Environmental...
AI summary The text outlines Phase 6 of a project involving confirmatory sampling and completion reporting, including environmental consulting, site coordination, and risk assessments. It references updated unit rates from 2024 and assumes costs will be similar to a previous project due to comparable site features.
iesel Fuel Oil System 357 Light Oil System 358 Fuel Oil Additive System 359 Natural Gas Systems (Station Gas, Unit Gas and Propane Fuel Gas) 36 BOILER STEAM AND WATER SYSTEMS REMOVALS NA 360 General 363 Boiler Vents, Drains and Blowdo'Ml S...
AI summary The document outlines various systems related to fuel oil, boiler steam and water, ash and water treatment, and environmental systems that are subject to removal. These include systems for diesel fuel oil, natural gas, boiler vents, ash handling, wastewater treatment, and mercury emissions control.
nge since 2020; apply inflation factor. 121 Phase 1 -Site Information Assessment 40,000 49,200 Previous Environmental Baseline Assessments have been completed in the past (2003, and updates in 2012 and 2018). A portion of the previous asse...
AI summary The text discusses the need for a comprehensive Phase 1 Environmental Site Assessment (ESA) and a HAZMAT survey at the TRMC site. Previous assessments were incomplete and did not follow the NSE Phase 1 Protocol. Estimated costs for completing these assessments are $20,000 each.
122 Phase 2 - Development of Reconnaissance Testing Program 80,000 110,000 A portion of the previous assessment v.ork included a Phase 2 ESA; hoVt.ever, the Phase 2 was not comprehensive and did not include all items prescribed in the NSE...
AI summary The text discusses the need for a comprehensive Phase 2 Environmental Site Assessment (ESA) due to the previous assessment's lack of comprehensiveness. It outlines the existing and required monitoring wells, soil samples, and other testing around various site features, including fuel storage areas and buildings.
Used same methodology as 2020 but 'Mth updated 2024 unit rates. 124 Phase 4 - Preparation of Decommissioning and Clean-up Plans 60,000 73,800 A risk assessment 'MIi need to be developed to determine human health and ecological risks based...
AI summary The text discusses the preparation of decommissioning and clean-up plans, referencing updated unit rates from 2024. It highlights the need for a risk assessment to evaluate human health and ecological risks based on contaminants identified in previous environmental site assessments at the TRMC site. An estimated $50,000 is allocated for a Human Health and Ecological Risk Assessment (HHERA).
CATION: SYDNEY TRANSPORTATION AND RAILCAR MAINTENANCE CENTRE DATE: DATE: 30-Jul-24 Account Estimated Cost: Estimated Cost: Item Description Assumptions / Notes: 2024 Code July2020 July2024 Handling of Wastewater and Surface Drainage 10,000...
AI summary The document outlines estimated costs for handling wastewater and surface drainage at the Sydney Transportation and Railcar Maintenance Centre. It notes that the site's flat terrain and railway ballast reduce surface water runoff, though booms may be needed in wetland areas to manage potential PHC-impacts during decommissioning activities. Sanitary ponds are expected to remain operational but with minimal costs due to low employee numbers.
ponds are no longer treated due to very low numbers of employees v.orking on site. No chanae since 2020; therefore, annlv inflation factor. Control of Fugitive Atmospheric Emissions See Right See Right Fugitive atmospheric emissions not an...
AI summary The text discusses the control of fugitive atmospheric emissions during the remediation of the TRMC site, noting that emissions are not anticipated due to minimal remedial activities. It also addresses the removal and disposal of materials and residues, estimating costs and noting that the TRMC has fewer tanks and storage facilities compared to other NSPI sites.
sites; therefore it is antciipated that this cost will be lov.er compared to some other NSPI sites. No chanae since 2020; therefore, annlv inflation factor. Excavation of Contamminated Soils and Sediments 850,000 1,350,000 Based on previou...
AI summary The text discusses the anticipated costs for excavation and disposal of contaminated soils and sediments at a site, noting that free product and BTEX/TPH and PAH impacts were identified in previous assessments. It assumes that 5,000 m³ of PHC and PAH-impacted soil will need to be excavated and disposed of off-site.
e required in areas Wlere PHC and/or PHC-impacted soil was excavated. No change since 2020; therefore, aoolv inflation factor. In-Program Contaminant Monitoring 35,000 40,000 Assume additional sampling of 15 existing \\'ells once during de...
AI summary The text outlines monitoring requirements for PHC-impacted soil and water during decommissioning activities, including sampling of wells, soil, and surface water. It assumes additional sampling during decommissioning and outlines costs associated with these activities.
duration of project. Costs reflect sampling and reporting of resuHs. Used same methodoloav as 2020 but with uodated 2024 unit rates. 126 Phase 6 - Confiratory Sampling and Completion Reporting 100,000 123,000 Environmental consulting, site...
AI summary The text discusses the costs and methodology for Phase 6 of a project involving confirmatory sampling and completion reporting. It mentions the use of updated 2024 unit rates and highlights that the costs are expected to be higher than initial estimates due to the extent of impacts identified in soil and groundwater.
uly 2020 to July 2024 100's SITE REMEDIATION ISSUES: 12 SITE REMEDIATION ISSUES 292,740
AI summary The document outlines site remediation issues from July 2020 to July 2024, with a total cost of $292,740 listed for the 'SITE REMEDIATION ISSUES' section. The text appears to be part of a regulatory proceeding and includes references to environmental remediation and site-specific issues.
120 General Preparation (Planning, Permits, Co-ordination with Regulators etc.) 24,600 Preparation, meetings. project updates. etc. No significant change since 2020; therefore, apply inflation factor. 121 Phase 1 -Site Information Assessme...
AI summary The text outlines the costs for various phases of a project, including general preparation, site information assessment, and reconnaissance testing program development. It mentions the application of an inflation factor due to no significant changes since 2020 and references potential environmental concerns related to transformer leaks and releases.
substation, potential releases at the maintenance building and waste oil storage shed, potential transformer leaks from the pad mounted transformers at each turbine, and potential lubricant releases from the turbines. Estimate 4 monitoring...
AI summary The text discusses environmental sampling and testing requirements for a substation and associated facilities, including monitoring wells, test pits, and soil and groundwater sampling for metals and petroleum hydrocarbons. It notes no significant change since 2020 and the application of an inflation factor.
Account Item Description Estimated Cost 2024 Assumptions/ Notes:2024 Code Reclamation Measures 73,800 Site grading and hydroseeding at tower bases, substation, maintenance building. No significant change since 2020; therefore, apply inflat...
AI summary The document outlines estimated costs for reclamation measures, contaminant monitoring, and long-term monitoring activities related to decommissioning. Costs are adjusted using an inflation factor based on no significant changes since 2020. Expenses include site grading, hydroseeding, and regulatory reporting.
wells, 15 test pits (substation, hatt of the turbine locations) Ytflh soil and groundwater sampling for metals and petroleum hydrocarbons (PHCs). Estimate includes sampling, lab analysis, consulting and reporting. No sionificant chanoe sin...
AI summary The text outlines environmental impact assessments and remediation planning for a site with turbine and substation locations. It includes soil and groundwater sampling, testing programs, and preparation of decommissioning and clean-up plans, with no significant changes since 2020 and an annual inflation factor applied.
assumed to consist of removal of potential impacts associated Ytith potential leaks from the turbines and the substation, and potential impacts from forestry equipment stored at some of the turbine locations. No sianificant chanae since 20...
AI summary The text discusses the implementation of decommissioning and clean-up plans for a project, including preparation of specifications, worker safety monitoring, and handling of wastewater and surface drainage. It notes that no significant changes have occurred since 2020, and only inflation factors are applied.
73 800 Site nradina and hvdroseedina at tower bases substation maintenance buildina. No sinnificant chanae since 2020· therefore a inflation factor. ln-Proaram Contaminant Monitorina 14 760 Potential soil. aroundwater surface water and/or...
AI summary The text discusses various maintenance and remediation activities related to a site, including inflation factors applied due to no significant changes since 2020. It covers monitoring, sampling, reporting, and considerations related to land use and lease termination following decommissioning.
2024 100's SITE REMEDIATION ISSUES: 101 SITE REMEDIATION - Environmental 391,755
AI summary The document text references a site remediation issue with an environmental component, costing 391,755. The context is unclear, but it appears to be a financial or regulatory record of an environmental remediation expense.
100 General Preparation (Planning, Permits Co-ordination with Regulators etc.) 24600 Preparation, meetings, project updates, etc. No significant change since 2020; therefore, apply inflation factor. 101 Phase 1 - Site Information Assessmen...
AI summary The document outlines the preparation and planning phase for a project, including environmental assessments and potential environmental concerns identified during site visits. Inflation factors are applied due to no significant changes since 2020. Environmental reports and incidents involving hydraulic oil leaks are reviewed.
bines, waste oil storage at the maintenance building, staining noted outside the maintenance building, potential leaks during maintenance activities, potential leaks at the substation, and potential impacts from forestry activities perform...
AI summary The text discusses environmental concerns at a site, including waste oil storage, staining, potential leaks, and impacts from forestry activities. It also outlines an estimate for environmental monitoring, including soil and groundwater sampling for metals and petroleum hydrocarbons.
groundwater sampling for metals and petroleum hydrocarbons (PHCs). Estimate includes sampling, lab analysis, consulting and reporting. 103 Phase 3 - Detailed Testing Program 20,910 Based on site use and results of the site visit and docume...
AI summary The text outlines environmental impact assessments and cost estimates for phases 3 and 4 of a decommissioning and clean-up plan, including groundwater sampling and preparation of decommissioning plans. It notes no significant environmental impacts and applies an inflation factor for cost estimation.
Atmosoheric Emissions - Issues with emissions not expected durina decommissionina. Removal and Disposal of Materials and Residues 3,075 Vacuum truck to remove remaining waste oils in storage shed and maintenance building. No sign�icant cha...
AI summary The text discusses atmospheric emissions and the removal and disposal of materials and residues, including the use of a vacuum truck and excavation of potentially contaminated soils. Costs and impacts are estimated, with no significant changes since 2020 and the application of an inflation factor.
Cost2024 100's SITE REMEDIATION ISSUES: 12 SITE REMEDIATION ISSUES 2,997,991
AI summary The document highlights a cost of $2,997,991 related to site remediation issues under the 'Cost2024' section, indicating a focus on environmental and regulatory concerns associated with site remediation.
120 General Preoaration /Plannina. Permits Co-ordination with Reaulators etc.\ 15 000 Costs associated with overall olannina. oermittina. coordinatina with reaulators coordinatina with NSPI etc. 121 Phase 1 -Site Information Assessment 10...
AI summary The text outlines various phases and associated costs for site preparation, assessment, testing, and decommissioning planning for a mining project, including environmental testing and clean-up activities. Key costs are itemized for each phase, with a focus on environmental analysis and reclamation planning.
Construction of On-Site Containment Facilities Handlina of Wastewater and Surface Drainaae 200 000 surface water manaaement durina reclamation includina aroundwater control. Control of Fugitave Atmospheric Emissions Removal and Disposal of...
AI summary The text discusses environmental and reclamation measures at the Glen Morrison Quarry site, including wastewater management, control of atmospheric emissions, removal of contaminated materials, excavation of contaminated soils, and reclamation efforts conducted by NSPI. Environmental assessments have not been reviewed, and some impacts are anticipated.