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Home My WebLink AboutR-2000-058 Golder Associates, Inc. Contract Amendment #1RESOLUTION NO. R-2000- 58 A RESOLUTION authorizing execution of Amendment #1 for professional engineering services between the City of Yakima and Golder Associates, Inc WHEREAS, the City of Yakima has need of engineering services to investigate several potential alternatives to the Irrigation System Refurbishment/Rebuild; and WHEREAS, the City does not possess in-house staff qualified to perform the necessary work involved in this investigation; and WHEREAS, the City and Golder have entered into a contractual relationship via a contract authorized by Council Resolution R-98-156; and WHEREAS, the City of Yakima has complied with the provisions of RCW 39.80 which concerns the procurement of engineering and architectural services by a city; and WHEREAS, the City Council deems it to be in the best interest of the City to amended it's contract with Golder Associates, Inc., for the investigation of alternatives to the Irrigation System Refurbishment/Rebuild; now, therefore, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF YAKIMA: The City Manager, and the City Clerk are hereby authorized and directed to execute the attached and incorporated "Amendment #1", and the Assistant City Manager to execute the attached "Scope of Work" - New Task. ADOPTED BY THE CITY COUNCIL this 16th day of May 2000. ATTEST: Karen Roberts, City Clerk Mary Place, Mayor IRRIGATION SYSTEM REFURBISHMENTIREBUILD CONTRACT AMENDMENT # 1 Golder Associated, Inc., appreciates this opportunity to continue work with the City of Yakima regarding analysis of several new alternatives to the Irrigation System Refurbishment/Rebuild that have potential of reducing the capital cost of the irrigation system upgrades. The goal of this analysis is to split up the improvements proposed for the General System into manageable and affordable projects, that take into account water availability and the physical limitations of the system(s). Golder Associates, Inc., will be assisted in evaluating the financial impacts -of these new alternatives by Berk and Associates. As shown below, the total contract amount with Amendment #1 will be $218,000.00. Amendment Number 1 Summary Original Agreement Irrigation System Refurbishment/Rebuild Maximum Amount $ 188,000.00 Amendment #1 Analysis of Altematives Total Amount with this Amendment Max Amount $ 30,000.00 $218,000.00 We have attached as Exhibit "A" the Scope of Work, the descriptive memorandum from Golder Associates, inc., that fully identifies the Alternatives to be analyzed. This document and the. attachments serve as the documents required for the contract amendment. The purpose of this contract amendment is to identify the scope of work and budget necessary to perform the evaluation and analysis of the proposed alternative for potential cost savings for the Irrigation System Refurbishment/Rebuild. By signature to this amendment the parties to the original contract agree that this amendment and it attachment provide the necessary information to clearly guide and determine the work to be performed, and payments to be made for said services. Golder Associates By: ichael L. Brow City of Yakima Attest: • Richard A. Zais, C' Manager A. Zais, C' Manager Date: 524/cam Date: / Y--6 Ci ntract No. 2000-46 ?es91urtlion No. R-2000-58 Karen Roberts, City Clerks' Date: 06 EXHIBIT "A" SCOPE OF WORK New Task May 5, 2000 Task 260 - Alternatives Analysis Description of Work Golder will provide analysis of several new alternatives that have potential of reducing the capital cost of the irrigation system upgrades. The goal of these new alternatives is to split up the improvements planned for the General System into manageable and affordable projects, and take into account water availability and physical limits of the system(s). Berk and Associates will assist in evaluating the financial impacts of these new alternatives. The 6 alternatives are: 1A Use ground water to supply General customers through irrigation system, 1B Use ground water to supply General customers through domestic system, 2 Use domestic system to supply General customers from new water plant located at the Nelson diversion, 3 Develop new river diversion closer to General System, 4 Transfer the eastern portion of General System to domestic water and rebuild/refurbish western portion, and 5 Water conservation. Detailed scope items are: • Update several of the hydraulic models to estimate the impact of the above alternatives on pipeline sizes. • Develop cost estimates for the above alternatives, and revise cost estimates previously developed (as modified by some of the above alternatives/ modifications). • Berk Associates will update their previous financial analysis for the new alternatives. They will specifically look at ten (10), fifteen (15) and twenty (20) years to complete the program. The analysis will include financial impacts and loan repayment schedules. GnldPr AscnciatPs May 5, 2000 2 983-1286 • Prepare a technical memorandum summarizing the new analysis. Submit a draft for review by the City. • Meet in Yakima to discuss initial findings. Schedule It is anticipated that this task will be completed within 4 weeks of authorization to proceed. Budget We estimate a budget of $30,000 for this task. This includes 286 hours Golder labor and $5,000 subconsultant fee for Berk and Associates. Authorization Golder Associates is hereby authorized to proceed with this Task: Amend-2.doc L 5A440 date Michael L. Br• , P.E. date Gold or Assnciates MEMORANDUM TO: Dick Zais City Manager March 7, 2000 Dueane Calvin, Water/Irrigation Manager FR: Arthur Fleming, Cathy Smith; Golder Associates RE: YAKIMA IRRRIGATION SYS 1'1 M ALTERNATIVES Project No. 983-1286.240 This memorandum investigates several potential alternatives for methods to reduce costs associated with upgrading the Irrigation System. Since the cost of rehabilitating the General System is the largest portion of the overall system upgrade, we have focused on several alternatives that may reduce cost for that system. Some of these alternatives could be applied to other system upgrades as well. The General System's water supply is currently diverted from the Naches River at the Nelson Dam Diversion. Water is conveyed to the General Reservoir, and to the General distribution system via a transmission pipeline. The General System's distribution pipes consists of wood stave, steel and pvc pipes, most of which require replacement/ rehabilitation. Alternative 1- Construct New Water Supply Well Alternative 1A - Locate new well (wells) within the General System to service irrigation needs, through the irrigation distribution system. Pros • Centrally located for the General Irrigation system • Can reduce pipe sizes in distribution system due to central location of well • Save $1.5 million on transmission upgrades Cons • Will have to spend roughly $1.4 million construct two new supply wells to provide approximately 5,300 gpm. • Still have to upgrade distribution system within General System Considerations • Water rights transfer (�nlder Assnriate 05/05/00 2 Project No. 983-1286.240 Alternative 1B - Locate new well (wells) within the General System to service irrigation needs, through the domestic water system. Pros • Centrally located for the General Irrigation system • Save $1.5 million on transmission upgrades • Do not need to upgrade irrigation distribution system Cons • Will have to spend roughly $1.4 million construct two new supply wells to provide approximately 5,300 gpm. • Service line upgrades will likely be required (many homes have 1/2" lines, will need 3/4" to 1" lines) • Meter and exterior hose bib installation will be required Considerations • Water rights transfer Alternative 2 - Transfer Nelson Dam diversion to Domestic System. Develop water treatment facility at Nelson Dam. Pros • Do not need to upgrade irrigation distribution system, including the transmission main • Meter usage - better control, domestic rates, encourages conservation • Better under ESA Cons • Cost to install water treatment plant at or near Nelson Diversion • Service line upgrades will likely be required (many homes have 1/2" lines, will need 3/4" to 1" lines) • Meter and exterior hose bib installation will be required Considerations • Check hydraulic capacity of domestic system Alternative 3 - Create a new water diversion off of the Yakima River to feed the existing irrigation system. Pros • Shorter distance for transmission line • Less future O&M on transmission line nAIriar ASsnniatAs 05/05/00 3 Project No. 983-1286240 Cons • Still have to upgrade distribution system within General System • Develop new transmission line and pump station Considerations • Water rights transfer • Rights of way for new pipeline Alternative 4 - Transfer eastern portion of General to domestic, western portion to stay on irrigation distribution. Pros • Smaller transmission line (can slipline much more of the system's piping) • Only have to upgrade approximately 1/2 of the General distribution system Cons • Will have to spend roughly $1 million per well on installation costs to supplement domestic water (approximately 3,000 gpm per well), or construct parallel transmission line to feed domestic system with treated surface water from Nelson Diversion • Service line upgrades will likely be required in all homes switching to domestic water (many homes have 1/2" lines, will need 3/4" to 1" lines) • Meter and exterior hose bib installation will be required for all homes switching to domestic water Considerations • Water rights transfer • Dissatisfaction of irrigation users who want to either stay with irrigation water or switch to domestic, and don't get their preferred alternative Alternative 5 - Conservation Program Pros • Use less water • Irrigation upgrades could be somewhat smaller, therefore less expensive Cons • Consumers don't want to use less water • Takes a lot of public outreach to help people understand • Impractical to meter IR water. Therefore will be hard to monitor. Considerations • Potential water rights loss C�nlriAr AssnniatAs 05/05/00 4 Project No. 9834286.240 Additional Analysis We would enjoy investigating these alternatives in greater detail if you wish. Depending on exact scope of work, we estimate that the engineering cost would be between $15,000 and $25,000. Please call us when you are ready to discuss these alternatives in more detail. cenera_a s.a« (nldipr As nriatAs BUSINESS OF THE CITY COUNCIL YAKIMA, WASHINGTON AGENDA STATEMENT r 5 Item No. For Meeting of May 16, 2000 ITEM TITLE: Request for Approval of Resolution Authorizing Contract Amendment for Water/Irrigation Engineering Services Contract with Golder Associates, Inc. SUBMITTED BY: Glenn Rice, Assistant City Manager Dueane Calvin, Water/Irrigation Manager Dave Brown, Water/Irrigation Engineer CONTACT PERSON/TELEPHONE: Dueane Calvin / 575-6480 SUMMARY EXPLANATION: City Council is respectfully requested to approve the attached resolution authorizing the City Manager to execute the attached Contract Amendment #1 for engineering services with Golder Associates, Inc. On December 15, 1998, City Council authorized the City to enter into contractual agreement for engineering services with Golder Associates, Inc. At the Council Study Session on the Master Irrigation Plan held on February 8, 2000 Council expressed interest in investigating some other potential alternatives to the rebuild/refurbishment of the existing irrigation system(s). The attached memo from Golder Associates addresses five (5) potential alternatives, specific to the General Irrigation System, the highest priority project and the highest cost project. Some of these alternatives could be applied to the other systems in need of refurbishment. Phil Small and Onni Perala, Co -Chairs of the Citizen Irrigation Committee, advocate continued progress in planning the refurbishment of the existing system. They would like to have Golder look at the specifics of how the rebuild/refurbishment could be split up into manageable and affordable projects, taking into account water availability and physical limits of the system(s). Specifically look at ten (10), fifteen (15) and twenty (20) years to accomplish the complete program with an analysis of the financial impacts including rates and loan repayment schedules. They believe that understanding these details of implementation will enable the City to better evaluate the alternatives. Original Contract (not to exceed) $188,000.00 Amendment #1 (not to exceed) $ 30,000.00 Total Amended Contract (not to exceed) $218,000.00 Resolution X Ordinance Other (Specify) Contract X Mail to (name and address): Michael Brown, Golder Associates, Inc. 18300 NE Union Hill Rd., Suite 200; Redmond, WA 98052-3333 Phone: 425-883-0777 Funding Source Fund 477 (see attached) APPROVED FOR SUBMITTAL: � /� :...► City Manager STAFF RECOMMENDATION: Staff respectfully requests City Council approve the resolution authorizing the City Manager to execute the attached Contract Amendment #1 with Golder Associates, Inc. BOARD/COMMISSION RECOMMENDATION: COUNCIL ACTION: