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TASKORDERNO. 1 Pursuant to the MASTER AGREEMENT FOR PROFESSIONAL SERVICES BETWEEN CITY OF MOSCOW (CITY) AND HDR ENGINEERING, INC. (ENGINEER) This Task Order is made this 5/'5/ day of October, 2016, and entered into by and between the City of Moscow, a municipal corporation of the State of Idaho (hereinafter "City''), and accepted by HDR Engineering, Inc. (hereinafter "Engineer"), pursuant to the mutual promises, covenant and conditions contained in the Master Agreement between the above mentioned parties dated August 3 0, 2016. The Project Name for this Task Order 1 is as follows: CITY OF MOSCOW Northwest Reservoir Replacement Analysis PROJECT UNPERSIANDING The City of Moscow (City) is considering replacing the existing Northwest (NW) Reservoir with a new tank, located on a site north of Mix Road. Previous hydraulic modeling evaluations have explored the concept of increasing the size of the proposed NW Reservoir up to 2 million gallons (MG) and have it operating so as to help mitigate the high system pressures that develop in the western portion of the distribution system when high flows from the Wells 9/10 area are being conveyed from west to east through the system. Those analyses determined that a larger NW Reservoir, with filling modulated through a flow control valve, can decrease system pressure in an amount similar to that resulting from planned east-west transmission system improvements. The objective of this task order is to extend the prior analysis to determine if an appropriately sized NW Reservoir would avoid the need to construct a replacement for the Northeast (NE) Reservoir in the future. The analysis is intended to determine: • What size the new NW Reservoir would need to be to meet the City's long-term storage capacity needs, assuming the NE Reservoir is taken out of service. • If a single new storage facility in the proposed location is capable of supporting delivery of water to the eastern part of the City, under current and future distribution system conditions. SCOPE OF WORK The Scope of Work for this task order is described below. Task 1: Project Management Provide management of the task order. Specific sub-tasks: Task Order I Northwest Reservoir Analysis HDR Engineering, Inc. Page I of4 ---PAGE BREAK--- • Organize and manage the task order team. • Coordinate with City project manager. • Prepare invoices and progress reports transmitted by email in PDF format. Deliverables: invoices and progress reports. Task 2: Storage Capacity Analysis Evaluate storage capacity needs to determine minimum required size of NW Reservoir if NE Reservoir is taken offline. This will be an update to the analysis presented in Section 7.2 of the 2012 Comprehensive Water System Plan (CWSP). As such, two primary scenarios will be considered: 1) assuming all storage facilities and sources are available; 2) assuming the largest reservoir and largest source are oftline. Deliverables: Results will be included in Technical Memorandum. See Task 4. Task 3: Hydraulic Modeling and Analysis Conduct hydraulic modeling and analysis to determine distribution system pressures under various operational scenarios considering various sizes of the new NW Reservoir, as informed by Task 2. This will be approached in similar fashion to the analysis documented in the HOR Technical Memorandum titled: Northwest Reservoir Replacement Modeling Analysis (September 4, 2013). This analysis will be comprised of: 1) extended period (EP) simulations to evaluate reservoir fill times and operational controls regarding a flow control valve for the reservoir, if needed; and, 2) steady state (SS) simulations to identify pressures at key points in the distribution system under various operational conditions. The scenarios evaluated will be similar to those considered in the 2013 technical memorandum. The EP simulation scenarios will evaluate up to three different NW Reservoir sizes, with the smallest being that which provides the minimum required storage capacity in 2050, per Task 2. Two sub-scenarios will be evaluated within each scenario: A) assuming no East-West transmission upgrades; and, B) assuming construction of East-West transmission upgrades CWSP capital improvement project D-24). The key results of this analysis will be identification of control valve settings necessary to limit flow into the NW Reservoir such that it does not fill completely prior to the filling of the Vista Reservoir in the eastern portion of the City, and approximate reservoir fill times. The SS simulation analysis will consider scenarios comprised of various combinations of the following variables: • Reservoir Sizes. Per the EP analysis. • Transmission System Configuration. Per the EP analysis. • Reservoir Levels. Filling (10 feet below overflow); Almost Full (1 foot below overflow); Full (NW Reservoir altitude control valve closed). • Well 9/10 Operation. Only 1 of these wells operating; both wells operating. The key results of this analysis will be pressures at key locations under the various scenarios. Deliverables: Results will be included in Technical Memorandum. See Task 4. Task Order I Northwest Reservoir Analysis HDR Engineering, Inc. Page2of4 ---PAGE BREAK--- Task 4: Produce Technical Memorandum Document the results of the analysis and discuss with City. Specific sub-tasks: • Prepare Draft Technical Memorandum. • Discuss findings with City staff via phone. • Prepare Final Draft Technical Memorandum, based on City comments. Deliverables: Draft and Final Technical Memoranda, transmitted by email in PDF format. ASSUMPTIONS 1) Notice to Proceed will be granted by November 1, 2016. Task will be completed by December 31, 2016. 2) The City's current hydraulic model, as maintained by HDR, will be used for analysis. No updating or calibration of the hydraulic model is required. 3) The analysis will utilize the following water demand conditions: a. Current= 2015 demands (as presented in the CWSP), for sake of comparison with analysis in the CWSP, as 2015 was a key analysis year in that document. As noted below, all modeling scenarios will assume 2050 demands. Only up to four scenarios (bracketing the range of conditions considered amongst all scenarios) will also be run assuming 2015 demands, so as to identify the sensitivity of the results to level of water demand. b. Future= 2050 demands (as presented in the CWSP), to consider a long-range horizon of at least 30 years. All modeling scenarios will assume 2050 demands. 4) The analysis will assume Well 10 and associated distribution piping are constructed and operational, since this will be the case by the time the new NW Reservoir is online. No scenarios are considered wherein Well 10 infrastructure is not operational. 5) The ground elevation for the proposed NW Reservoir site north of Mix Road is assumed to be 2,740 feet, as provided by the City. 6) For the SS simulations, pressures will be identified at the same locations as previously analyzed in the 2013 technical memorandum. 7) No in-person meetings between HDR and City staff will be required to complete this task order. Task Order I Nonhwest Reseivoir Analysis HOR Engineeiing, Inc. Page 3 of 4 ---PAGE BREAK--- TIME OF COMPLETION apd C01\1PENSATION SCHEDVLE The following schedule is based on a Notice to Proceed (NTP) from the City by November 1, 2016 and resulting in completion by December 15, 2016. An NTP issued on a different date will change the schedule accordingly. COMPENSATION AND COMPLETION SCHEDULE Task Description Due Date Conmensation 1 Project Management Duration of task order $2,400.0C 2 Storage Capacity Analysis November 2016 $1,650.0C 3 Hydraulic Modeling and Analysis December 2016 $6,700.0C 4 rrechnical Memorandum December 31 2016 $5,050.0C TASK ORDER TOTAL: $15,800.00 The Not-To-Exceed amount to complete all services listed above for this Task Order No. 1 is fifteen thousand eight hundred dollars ($15,800.00). No compensation will be paid over the Not To- Exceed amount without prior written approval by the City in the form of a Change Order. invoices shall be billed as a percentage of work completed. Any and all travel will only be reimbursed if pre-approved by the Project Manager, and only per the City of Moscow Travel Policy. Reimbursable expenses will be paid at cost and only if pre-approved by the Project Manager, and accompanied by an itemized receipt. Any travel and/or reimbursables paid will be paid as part of the Not-To-Exceed Task Order Total per the Compensation and Completion Schedule above. k - - Task Order I Resc111oir Analysis HOR Engineering, Inc. HDR Engineerin2, Inc. By: M Kate Eldridge:ve President Dated: Obu-1... 1 l'i> oated: _ _ _ r_o 3 Page4 of4