N-1Application - Redacted
4 passages
CI Number: C0070486 Title: HYD Lower Great Brook Stoplog Replacement Start Date: 2025/01 In-Service Date: 2025/11 Final Cost Date: 2027/06 Function: Hydro Forecast Amount: $3,593,884
AI summary The document outlines a project titled 'HYD Lower Great Brook Stoplog Replacement' with a forecasted cost of $3,593,884, starting in 2025 and expected to be completed by 2027. The project is related to hydro infrastructure and is part of a regulatory proceeding.
REDACTED C0070486 Page 2 of 6 REDACTED (CONFIDENTIAL INFORMATION REMOVED) degradation of the concrete structure and stoplog system had occurred, resulting in a significant reduction of the design flow capacity through the sluiceway. Interv...
AI summary The document discusses the degradation of a concrete structure and stoplog system, leading to reduced flow capacity and the need for replacement to ensure safe operation and flood management. Refurbishment of concrete piers is also required due to significant deterioration.
Why do this project now? The stoplog replacements are critical to ensure safe and reliable operation of the LGB generating station and must be replaced before the upcoming fall/winter months when the system typically experiences higher flo...
AI summary The stoplog replacements at the LGB generating station are critical for safe and reliable operation, especially during high-flow periods. The project is considered complete when all stoplogs are installed and refurbishments are finished, with the Final Cost Date set for June 2027. This follows habitat restoration efforts to meet environmental requirements.
Document No: XXX-XX-XXXX-XXXX Hydropower Project Name: HYD Lower Great Brook Stoplog Replacement Maturity Level of Project Definition Deliverables General Project Data A. Scope Project Scope of Work Description Site Infrastructure (Access,...
AI summary The document outlines the scope, capacity, location, requirements, technology selection, strategy, planning, and regulatory aspects of the HYD Lower Great Brook Stoplog Replacement hydropower project. It includes project data, maturity levels, and estimate classifications for various deliverables.
N-2NSPI (NSEB) RIR 1 to 3 - Redacted
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NON-CONFIDENTIAL 1 Request IR-1: 27 (d) NS Power submitted its application at the earliest feasible time. The November 2024 28 inspection identified that the stoplogs required replacement. At that time, NS Power and 29 its consultant began...
AI summary NS Power submitted an application for a project following an inspection in November 2024 that identified the need to replace stoplogs. Preliminary engineering and planning were undertaken to prepare the application for the NSEB.
operational dam safety concerns presented by the stuck stoplogs it was necessary for NS Power to proceed with drawdown work prior to completing a project application. Finally, more detailed inspection and testing of stoplog piers revealed...
AI summary NS Power had to conduct drawdown work due to operational dam safety concerns caused by stuck stoplogs before submitting a project application. Further inspection and testing of stoplog piers delayed the submission, but this timeline is typical for such activities.
2.1 General A site visit was undertaken on November 5, 2024. The weather was overcast with temperatures between 8 and 11°C. The site visit team consisted of: - Ellis O'Neil (Wood) - Alex Campbell (Wood) - Tony Urquhart (NSPI) - Grant Kelly...
AI summary A site visit was conducted on November 5, 2024, to investigate operational issues with stoplogs in sluiceway Bays 1 and 6. The team visually inspected the structure, observed stoplog operations, and measured stoplogs and sections of the stoplog checks.
2.2.1 General The visual inspection of the sluiceway took place primarily from the sluiceway deck. Due to access limitations, the upstream and downstream faces of the sluiceway could not be inspected closely. Furthermore, the submerged por...
AI summary A visual inspection of the sluiceway was conducted primarily from the sluiceway deck, with limitations preventing close inspection of upstream and downstream faces. Leakage was observed in some bays, and deck logs were removed from Bays 2 and 6 for inspection, while others remained in place.
2.2.2 Observations In general, no visible signs of significant movement were observed in the vertical construction joints on the sluiceway deck, located above the piers and at both abutments (Photos A-2 to A-10). The width of a vertical co...
AI summary No significant movement was observed in the vertical construction joints on the sluiceway deck, though some joint sealant extrusion was noted. A handrail separation was observed, indicating movement between the powerhouse and sluiceway, likely due to powerhouse deformation. Local handrail distortions are attributed to impacts from heavy equipment.
2.3 Observation of Stoplog Operations Limited operation of the stoplogs in Bays 2 and 6 was observed during the site visit. Stoplogs were operated by two NSPI staff members using hydraulic lifters (Photos A-41 and A-42). A few stoplogs wer...
AI summary During a site visit, limited operation of stoplogs in Bays 2 and 6 was observed. NSPI staff used hydraulic lifters to operate the stoplogs, but one stoplog in Bay 6 was difficult to remove, as previously reported. Some stoplogs were temporarily placed in Bay 2, stopping spillage, but were later removed without difficulty.
3.2 Recommendations - 1) Review the discharge capacity of the sluiceway, considering only 4 of the 6 stoplog bays are operational to confirm the flood handling capacity is adequate from a Dam Safety perspective. - 2) As an interim solution...
AI summary The document outlines several recommendations for improving the sluiceway's safety and functionality, including reviewing discharge capacity, conducting surveys and tests on concrete, performing a stability analysis, rehabilitating the structure, and implementing a monitoring plan.
7 8 9 (iv) Work outside normal working hours, which included archeological monitoring, security, drawdown management and fish rescue, cement pour completions, and stuck stoplog removal and re-installation, was required to maintain the 8-da...
AI summary The text discusses the necessity of work outside normal working hours for a project, including archeological monitoring, security, and fish rescue, to maintain an 8-day drawdown schedule as required by the Fisheries Act Authorization. It also notes that non-material costs are higher due to the nature of drawdown projects, involving major construction contracts and environmental offsetting.
of aluminium dock sections. Upon researching possible sources, Eagle Beach was the only supplier who had available products (aluminum docks) in stock and was available to mobilize to build such a bridge within a week of notice. • Project E...
AI summary The text discusses the procurement of aluminum dock sections from Eagle Beach, the environmental offsetting plan managed by Ducks Unlimited Canada, and the engagement of Wasoqopa'q First Nation for archaeological monitoring. Costs outlined in the detailed estimate include actuals and forecast costs, with some differences from initial vendor quotations due to change orders.
Project Estimate September 9, 2025 Reference 801-090425 NSPI Mersey River - LGB Dam Concrete Inspections & Repairs Nova Scotia Power Mersey River, NS Attention: Roberts, Jacob Subject LGB Dam Concrete Inspections & Repairs Tacten is please...
AI summary Nova Scotia Power has requested proposals for concrete inspections and repairs at the LGB Dam on the Mersey River. Tacten has submitted a proposal to investigate high concern areas and install access platforms.
REDACTED C0070486 NSEB IR-03 Attachment 1 Page 14 of 74 Date Issued August 21, 2025 Nature of Quote Time and Materials Reference 801-070825 NSPI Mersey River - LGB Dam Stoplog Removal R02
AI summary The document is a quote for the removal of stoplog structures at the LGB Dam on the Mersey River, issued by NSPI on August 21, 2025. It outlines the nature of the work as a time and materials project.
We hereby offer the following: 1. Supply and install 240' of 52" of Lighthouse Aluminum Docks (Removal not included) $ 68,800.00+HST 2. Removal of docks and store on NSPI property $ 25,300.00+HST 3. Deliver and install 40' Sea Can for dock...
AI summary The document outlines three items for supply, installation, and removal on NSPI property, with associated costs. The items include aluminum docks, dock and store removal, and a Sea Can for dock storage.
Irv ing Ite m Se cti on De rip tio sc n Es tim Q nti ty ua Un it 1.1 Ge ral ne Mo bil iza tio n 1 L S 1.2 Ge ral ne De bil iza tio mo n S 1 L 1.3 Ge ral ne Tra l & bs ist ve su an ce 1 L S 1.4 Ge ral ne Sit cif ic s afe lan nin & d ion ty...
AI summary The text appears to be a table and a redacted attachment from a regulatory proceeding, likely related to infrastructure planning or asset management, with entries such as mobilization, debilization, and installation quantities listed in LS units. It also includes unit rates for equipment and operations.
300 ton crane to replace stoplogs to deck of the dam.
AI summary The text mentions the replacement of stoplogs with a 300-ton crane on the deck of a dam, indicating a construction or maintenance activity related to dam infrastructure.
Primary Objective: 1) Replace the 120 wooden stoplogs in the sluiceway. This involves temporarily lowering the Lower Great Brook headpond from El. 125.0 ft to El. 105 ft.
AI summary The primary objective is to replace 120 wooden stoplogs in the sluiceway, which requires temporarily lowering the Lower Great Brook headpond from El. 125.0 ft to El. 105 ft.
Part B: Sluiceway Rehabilitation / Conceptual Designs The objective of Part B is to undertake the additional investigations and testing recommended in Wood's memo "Lower Great Brook Sluiceway Assessment" , develop conceptual designs to ref...
AI summary Part B of the project aims to conduct further investigations and testing as recommended in Wood's memo, develop conceptual designs for refurbishing the sluiceway structure, and prepare a concept design report. Wood's approach to completing both Part A and Part B is detailed in Section 2.
Phase 3 – Develop Design Alternatives Task 3-1: Develop conceptual-level design alternatives for NSPI review: - a. Develop isolation options to execute the activities associated with the Part A scope of work. This will include a descriptio...
AI summary Phase 3 involves developing design alternatives for NSPI, including isolation and access road options, and determining the time required to lower water levels. Wood requires specific data from NSPI, and a memo will be prepared to outline alternatives with their pros, cons, and costs. NSPI will ultimately select the preferred alternative.
Phase 4 – New Shorter Stoplog Design Task 4-1: Review historical information - a. Design drawing of current stoplog. Wood will review the drawing for the existing stoplogs. It is noted the drawing recently received from NSPI for the existi...
AI summary Phase 4 involves reviewing historical information related to the design of existing and new stoplog lifters. The current stoplog has a specific centre-to-centre distance between lifting points, while the new lifter design allows for variable spacing, ensuring compatibility with the existing stoplog design.
Task 4-3: Create Issued for Construction (IFC) design drawings Wood will design replacement stoplogs based on the design detail currently used for the stoplog lifting points and the confirmed width of stoplog openings on site. The drawings...
AI summary Wood is tasked with designing replacement stoplogs based on current design details and confirmed on-site measurements. The drawings must be stamped by a registered professional engineer licensed in Nova Scotia.
Phase 5 – Prepare and Submit Conceptual Design for the Chosen Isolation Option Task 5-1: Prepare the conceptual design drawings for the preferred isolation option to the 30% design level and issue to NSPI for review The design drawings wil...
AI summary Phase 5 involves preparing conceptual design drawings for the preferred isolation option at the 30% design level and submitting them to NSPI for review. The drawings will show initial layouts and general cross-sections but will not be fully annotated.
Phase 1 – Investigations Task 1-1: Complete further assessment/investigative work that has been stated in the completed memo to support the conceptual design report: - a. Drone surveys / photos of downstream face and sides of piers, unders...
AI summary Phase 1 of the investigation involves conducting drone surveys, geotechnical studies, and underwater ROV investigations to assess the condition of the sluiceway structure and determine necessary rehabilitation measures. The report outlines the scope of work and associated costs for these activities.
2.3 Work Not Included We understand that the following items are not included in the current scope of work. However, Wood would be pleased to carry out this work as a separate work item. - Geotechnical investigations beyond the field testi...
AI summary This section outlines work items not included in the current scope of the project. These include geotechnical investigations, bathymetric surveys, hydrologic modeling, flood assessments, underwater inspections, archaeological assessments, and permitting. Wood is willing to perform these tasks as separate work items.
Table 2-2: Milestone Schedule Task Activity Duration (Days) Start Finish Subtotal for Phase 3 Schedule Dates Approximate Part A: Environmental Application Support / Stoplog Design January 27, 2025 2 January 27, 2025 2 0 January 27, 2025 Ja...
AI summary The document presents a milestone schedule with tasks and timelines for Phase 3 and Phase 4, including environmental application support, stoplog design, sluiceway rehabilitation feasibility, and conceptual designs. The timeline includes start and finish dates for specific activities.