PSA - Water Hydraulic Model Updates & Flow Testing – Black & Veatch Corporation

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Page 1 (Exhibit A – Engineer’s Services) EJCDC E-500 Agreement Between Owner and Engineer for Professional Services Copyright © 2008 National Society of Professional Engineers for EJCDC. All rights reserved. This is EXHIBIT A, consisting of pages, referred to in and part of the Agreement between Owner and Engineer for Professional Services dated , . Engineer’s Services Article 1 of the Agreement is supplemented to include the following agreement of the parties. Engineer shall provide Basic and Additional Services as set forth below. PART 1 – BASIC SERVICES A1.01 Study and Report Phase A.Engineer shall: Task 101 – Update Hydraulic Model Network Engineer will update the Owner’s WaterGEMS hydraulic model network based on the following information provided by the Owner: 1)Most recent GIS database export. 2)As-built plan sets from completed projects. Because the hydraulic model was recently developed using the City’s GIS data exported on April 25, 2019, the network updates are expected to be minor. For purposes of developing a fee proposal, an initial level of effort is estimated for making these updates. Model updates and changes beyond this level of effort may need to be covered in an additional amendment. Task 102 – Hydrant Flow Testing Plan and Assistance Engineer will prepare a field testing plan to test hydrant flows at up to 12 locations through the Owner’s service area. A Draft Field Testing Plan will be submitted to the Owner in PDF format for review. A teleconference will be held with the Owner and Engineer to review the draft plan with the Owner’s comments being incorporated into a Final Field Testing Plan deliverable. Hydrant flow testing will be performed and completed by the Owner as indicated in the Final Field Testing Plan with one day of onsite support from the Engineer’s senior modeling engineer. Additional days of onsite support can be provided as a supplemental service. Deliverables under this task will include a draft and final Field Testing Plan. Task 103 – Steady State Model Calibration using Hydrant Flow Test Data Engineer will use the hydrant flow test data to refine the calibration of the updated hydraulic model. Engineer will create up to 12 steady-state model scenarios, one to simulate each of the hydrant flow tests performed. Each scenario will be updated to reflect the boundary conditions observed during the flow tests and the recorded flow will be applied to the appropriate hydrant