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HomeMy WebLinkAboutAddendum 1 - RFP - 10186 Hydroelectric Package Design and Manufacturing Services - Halligan Water SupplyAddendum # 1 10186 Page 1 of 7 ADDENDUM NO. 1 SPECIFICATIONS AND CONTRACT DOCUMENTS Description of RFP 10186: Hydroelecrtic Package Design and Manufacturing Services - HWSP OPENING DATE: 3:00 PM (Our Clock) August 11, 2025 To all prospective bidders under the specifications and contract documents described above, the following changes/additions are hereby made and detailed in the following sections of this addendum: *Reminder – The City is seeking proposals from qualified Professionals to assist with the Design and Manufacturing of the Hydroelectric Package. The City wants to see multiple options (if applicable) proposed and the answers to questions in Exhibit 1 are not reflective of a preferred design or product. Exhibit 1 – Questions and Answers Exhibit 2 – Preproposal Powerpoint Presentation .pdf Please contact Jake Rector, Purchasing Manager, at (970) 221-6776 or jrector@fcgov.com with any questions regarding this addendum. RECEIPT OF THIS ADDENDUM MUST BE ACKNOWLEDGED BY A WRITTEN STATEMENT ENCLOSED WITH THE PROPOSAL STATING THAT THIS ADDENDUM HAS BEEN RECEIVED. Financial Services Purchasing Division 215 N. Mason St. 2nd Floor PO Box 580 Fort Collins, CO 80522 970.221.6775 fcgov.com/purchasing Addendum # 1 10186 Page 2 of 7 Exhibit 1 Questions and Answers 1. UNIT SIZING Under “1.04 Design Citeria” the following table is shown: However, under “1.05 Site Data” the following is mentioned: 1.05 SITE DATA A. Hydraulic data for turbine design: 1. The MANUFACTURER shall confirm all the design parameters prior to starting the design and/or developing drawings. Addendum # 1 10186 Page 3 of 7 2. The following is a list of key design parameters used for sizing the hydroelectric turbine generator: a. Pressures: 1) The maximum upstream hydrostatic head corresponds to reservoir at the non -overflow crest elevation of the dam: EL 6411.00 feet. 2) The minimum design downstream hydrostatic head corresponds to the tailwater elevation in the stilling basin: EL 6280.00 feet. 3) The normal design hydrostatic head corresponds to the reservoir level at the spillway crest elevation of the dam: EL 6384.00 feet. This results in an available static head of 102.00 feet. Actual net head available for the hydroelectric turbine will depend on actual reservoir elevation, tailwater elevation, and hydraulic losses in the conveyance to the hyd ro turbine. b. Flows: 1) The minimum flows and average head vary throughout a typical year and have been approximated based on historical operation projected to the raised reservoir elevation. The hydroelectric turbine shall be designed to provide maximum power during minimum flow of 3 cfs for head ranging between 66 and 95 feet. The hydroelectric turbine shall use additional flow and head available up to the average flow and average head between the months of April to September to produce maximum available power. Addendum # 1 10186 Page 4 of 7 2) The design flow and head for the hydroelectric turbine is as follows: A) Head : the meaning of “non-overflow crest elevation” is unclear. We thought that the max. reservoir level could be only the “spillway crest elevation”? Can you confirm that the non-overflow crest elevation should not be considered A: The normal operating reservoir elevation is at the overflow crest elevation (spillway) at El. 6384 corresponding to 102 ft of head. This corresponds to the operating head of the turbine. The dam is designed to spill over the spillway crest during normal operations and hydrologic flood events. The dam is designed to have a maximum Addendum # 1 10186 Page 5 of 7 water surface elevation of El. 6411 corresponding to 129 ft of head. This corresponds to the maximum potential head on the turbine. B) Flow and power: On one hand 3-5 cfs are mentioned, On the other hand the rated electrical output should be 57 kW. a. If we need to reach 57 kw electrical output even at the lowest head of 66ft, we would need to size the turbine large enough to discharge a max flow of approx. 13 cfs. This unit will also be capable of operating at 3 and 5 cfs as we would be able to close the guide vanes and reduce the amount of flow and power. This unit would be more expensive but provide the most flexibility in this islanded system. A: This configuration could be considered as an option and can be further discussed during Phase 1 – Design Services. Phase 1 will include optimization of the system to meet intended operations. b. If we only need to discharge 3 or 5 cfs we would dimension the turbine much smaller and it will consequently reduce the price of the turbine but it would not be able to operate at higher flows. In this case we would be limited to a power lower than 57 kW. In that case, we would consider what is the turbine size needed to accommodate what is mentioned 1.04 Design criteria : 66-95ft at 3cfs and 79-104 at 5 cfs, please confirm A: This configuration could be considered as an option and can be further discussed during Phase 1 – Design Services. Phase 1 will include optimization of the system to meet intended operations. ELECTRICAL We might be able to offer two different systems. Here are some questions: Addendum # 1 10186 Page 6 of 7 A) We have a possibility to use a standard control package for islanded mode operation. However, this package could use UL components but may not be UL certified when it is install in the electrical cabinet. The standards used to build this panel will be as per CE or VDE standards which are common European standards similar to UL. That being said the breaker and protection could be as per UL standard which is usually what is important. Could you please confirm this approach is acceptable. A: Using a combination of European and other standards should be acceptable. This approach can be further discussed during Phase 1 – Design Services. B) The diesel backup generator is not required to startup the micro-hydro. The micro-hydro can be "black" started using 24Vdc using two 7.5aH gel cells located inside the Vane Actuator Control Panel. A: This approach should be acceptable. This approach can be further discussed during Phase 1 – Design Services. Please note, the backup generator is currently planned to be fueled with propane. C) One of the system is very simple and has been proven effective for similar application and is more simple with for instance no PLC. Can we consider this as an option? A: This option can be considered during Phase 1 – Design Services. The City included Phase 1 to have these discussions with the selected Contractor and the Design Engineer. Options can be included in proposals. D) Liquid Petroleum Generator (LPG) : Gasoline or Diesel? A: The backup generator is currently planned to be fueled with propane (LPG). ADDITIONAL GENERAL QUESTIONS 1. - Is it possible to rework the discharge piping to provide positive discharge pressure? A: It is possible to provide positive drainage on the outlet works. This topic can be further considered during Phase 1 – Design Services. Addendum # 1 10186 Page 7 of 7 2. - Is The City open to alternative terms other than T&M for Phase 1 work? A: Costs for the Phase 1 Design Service Work Order may be shown as a lump sum estimate with detailed hourly rates required by position for the task. In addition to the proposal, please include sheet of hourly rates. The City plans to negotiate Work Order 1 based on a time and materials basis. 3. - 'SECTION 02229' H, L - Can you explain why the city requires two load banks, one being integral and the other portable? A: The Ballast Load Bank described in Section 2.01.H is intended for normal operations and permanently fixed within the valve house. The Portable Load Bank described in Section 2.01.L is intended for commission and verification activities and will likely be stored away from the valve house. This setup provides redundancy and flexibility for the operations and testing of the microhydro system. 4. - Is it required that the turbine runner be Stainless Steel as suggested in table '1.04 DESIGN CRITERIA'? Is The City open to alternative runner materials? A: Other materials for the turbine blade runner may be acceptable depending on evidence of successful applications on other projects. This approach can be further discussed during Phase 1 – Design Services. July 17, 2025 10186 Hydroelectric Package Design & Manufacturing Services –Halligan Water Supply Project (HWSP) Jake Rector & Taylor Scott EXHIBIT 2 Hydroelectric Project Design & Manufacturing Services-HWSP 2 Introductions Jake Rector – Purchasing Manager Taylor Scott – Special Projects Manager Darren Parkin – Halligan Project Manager Matt Fater – Director Civil Engineering Dan Swanson – AECOM Project Manager Please enter your name, company and email address in the chat box. RFP Schedule Review RFP Issued – July 10, 2025 Preproposal Meeting – July 17, 2025 Questions Due – July 23, 2025 Proposals Due – August 11, 2025 Interview (If Necessary) – August/September 2025 Hydroelectric Project Design & Manufacturing Services- HWSP 3 Agenda •HWSP Background •Scope of Work •Design Criteria •Project Schedule •Scope of Proposal •Cost •Proposal Evaluation HWSP General Information 4 Halligan Water Supply Project •New replacement dam for existing Halligan Dam •14,600 ac-ft storage – increase of 8,200 ac-ft •Normal operating reservoir El: 6384 ft resulting in 102 ft of static head Hwy 14 Spillway Chute Dam Crest Spillway Stilling Basin Valve House Dam Downstream Face HWSP General Information 5 •Seeking proposals from qualified Contractors (Contractor) for the design and manufacturing of an approximately 57 kW turbine-generator package (hydroelectric package) •Halligan Dam located near Livermore, CO. Valve House Detail Attachment – see RFP Project Goals •Provide reliable and sustainable electricity to operate the HWS as an isolated electrical source •Capitalize on the planned year-round releases of North Fork river flows through the HWSP •Deliver electricity within a small footprint as part of the planned outlet works and valve house of the replacement dam •Minimize long-term maintenance and operations costs •Develop a robust plan to execute the manufacturing and installation considering safety and other project risks City, Design Engineer, and selected contractor will revisit goals during the kickoff meeting 6 Project Scope Three separate work orders due to the timeline of the project Work Order 1: Design Services •AECOM - City’s design engineer for the replacement Halligan Dam •Integrate hydroelectric package into planned outlet works and valve house •Coordinate with AECOM to deliver turbine generator package requirements (dimensions, layout, draft tube, tailrace, etc.) •Deliverable 1: Layout and dimensions for initial incorporation into dam design •Deliverable 2: Shop drawings for final incorporation into design and material procurement, includes I&C details, one-line diagrams •Design meetings and coordination •Kickoff meeting and ongoing coordination meetings with City and AECOM •Cost estimating for materials 7 Project Scope Work Order 2: Procurement and Manufacturing Services •Manufacture all components in shop drawings •Coordinate and deliver materials to Fort Collins, CO •Provide updated cost upon execution of WO2. City will review the final cost and compare to the cost estimate from WO1. •Cost review will be based on reasonableness and tied to a local and national market index. International factors will also be considered Work Order 3: Startup and Commissioning Support Services •A separate General Contractor will be responsible for installation •Provide a trained representative to oversee portions of the installation and coordinate with GC •Provide a trained representative to perform startup and commissioning activities •Work with City staff to train personnel on hydroelectric package 8 Turbine Generator Unit Design Criteria Generator Package Design Criteria Attachment –see RFP 9 Criteria Value / Requirement Design Flow 3-5 cfs Gross Head 66-95 ft (3 cfs); 79-104 (5 cfs) Rated Output Power ~ 57 kW Voltage and Frequency 480 V; 60 Hz Turbine Type Crossflow (recommended) or similar Turbine Efficiency at Design Point ~ 70% Generator Capacity & Type ~ 70 kVA; 3-phase synchronous Generator Efficiency at Design Point ~ 94% Expected Service Life 20 years Turbine Generator Unit Design Criteria 10 Flows and Pressures: Contractor to develop rating curve for proposed turbine based on this info Head Avg. Flow Min. Flow (3-5cfs) He a d ( f t ) Fl o w ( cf s ) 105 100 95 90 85 80 75 70 65 1000 100 10 1 Project Timeline Anticipated Project Schedule 11 Phase 1 – Design Hydroelectric design kickoff Sept. 2025 Hydroelectric Design Deliverable 1 Dec. 2025 Hydroelectric Design Deliverable 2 March 2026 Phase 2 – Procurement & Manufacturing Anticipated Hydroelectric Package procurement Late 2026* Phase 3 – Startup & Commissioning Anticipated hydroelectric package installation (by others)Late 2028* Anticipated Replacement Dam Construction Completion Late 2029* * Anticipated dates depend on permitting and general contractor procurement status which may change. All timelines shown are tentative. Hydroelectric Project Design & Manufacturing Services- HWSP Scope of Proposal Design Services •What is your team’s experience with working on planning small hydroelectric packages for dams? •Describe your typical design input for projects like the HWSP. •Describe how your team approaches the design of a hydroelectric package and what makes your design approach unique. 12 Hydroelectric Project Design & Manufacturing Services- HWSP Turbine Technology •Describe the technology you have developed for providing hydropower for medium-head, low flow solutions like at the HWSP. •What is the reliability and repairability of your turbine, generator, and other components? •What level of efficiency does your turbine provide? •What advantages does your technology provide the City over other vendors? •How long have you been producing this technology and how many locations has it been installed? •What are you doing to continually improve the turbine technology? 13 Hydroelectric Project Design & Manufacturing Services- HWSP Manufacturing and Quality •Where do you manufacture and assemble parts for your turbine and generators? •Do you use an subcontractors or outside suppliers to complete the manufacturing? Describe how many and who would be involved in the process? •Provide details about your quality control program during manufacturing, installation, and commissioning. •Explain how your team adheres to a quality control program and how quality issues are addressed. •Provide examples of when your firm exceeded quality standards, gained industry recognition, or received quality awards. 14 Hydroelectric Project Design & Manufacturing Services- HWSP Cost and Work Hours 15 Hydroelectric Project Design & Manufacturing Services- HWSP 16 Hydroelectric Project Design & Manufacturing Services- HWSP Work Order III (Phase 3 – Startup & Commissioning Services) Provide schedule of rates by position and task for future Work Order. Rates will be reviewed annually and amended as mutually agreed upon. 17 Hydroelectric Project Design & Manufacturing Services- HWSP Evaluation Criteria 18 Hydroelectric Project Design & Manufacturing Services- HWSP Colorado Open Records Act (CORA) C.R.S. §§24-72-200.1 et seq. -Any proposals submitted hereunder are subject to public disclosure by the City pursuant to CORA and City ordinances. -Vendors may submit one (1) additional complete proposal clearly marked “FOR PUBLIC VIEWING.” -Such statement does not necessarily exempt such documentation from public disclosure if awarded the project as all provisions of any contract resulting from this request for proposal will be public information. 19 Hydroelectric Project Design & Manufacturing Services- HWSP Questions? Email to Jake Rector at jrector@fcgov.com RFP Schedule Review RFP Issued – July 10, 2025 Preproposal Meeting – July 17, 2025 Questions Due – July 23, 2025 Proposals Due – August 11, 2025 Interviews (If Necessary) – August 2025 Award (Tentatively) – August/September 2025 20