PSA - Arcadis US, Inc. - Design & Construction Administration for the Wastewater Headworks Influent Gates Improvements

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This is EXHIBIT A, consisting of 6 pages, referred to in and part of the Agreement between Owner and Engineer for Professional Services dated , 2017. 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 Flow enters the WWTP through the 96-inch plant influent where the flow is measured through a 60-inch magnetic flow meter located in the Meter Vault. Junction Box No. 1 is located upstream of the Meter Vault and Junction Box No. 2 is located downstream of the Meter Vault. A 96-inch bypass pipe also exists between the two junction boxes. Two locations for stop log grooves were provided in Junction Box No. 1 and four locations for stop log grooves were provided in Junction Box No. 2. These stop log groove locations provide flexibility to allow flow to be directed through the flow meter, through the bypass pipe, and/or through the current and future connection to the Headworks Building. Currently, the stop log that diverts flow through the flow meter (normal flow path) is installed in Junction Box No. 1 and is lodged in place. The City desires to provide automatically controlled, cast iron sluice gates in place of up to four of the stop log groove locations for ease of maintenance. An Influent Gate Location Evaluation was prepared by Donohue & Associates and recommended providing two gates in Junction Box No. 1, two gates in Junction Box No. 2, and bypass pumping utilizing existing junction boxes upstream of Junction Box No. 1 and downstream of Junction Box No. 2 to perform construction. This evaluation will be reviewed with the intent to provide sufficient gates for proper maintenance and a bypass plan for the least cost, and will be confirmed with the City. Once the project is confirmed, Arcadis will design the new gates in up to four locations and the associated structural, instrumentation and control, and electrical improvements. It is assumed that the new gates will fit within the existing structures and minimal structural modifications will be required. According to the City, the electric actuators can be powered and connected to the plant SCADA near the primary clarifiers. Human machine interface and software needs will be provided by the City. Arcadis will prepare bidding documents for the Headworks Influent Gate Improvements project and provide assistance during bidding. Additionally, Arcadis will provide engineering services during the construction phase of the project. The City will provide a City employee that will serve as the Resident Project Representative at the site to provide more extensive inspection of the Work. The scope of engineering services shall include the following: 1. Project Management. Provide project management including scope, budget and schedule control; coordination with Client; maintenance of project records; project setup, invoicing, and close-out. 2. Kick-off and Design Review Meetings. Meet with Client to kick-off the project including a site visit to perform (above -ground) field investigations. Meet with the client to review deliverables and design progress for preliminary and 60% designs. In addition to these in -person meetings, up to two conference calls are included to share progress and resolve outstanding items. Page 1 (Exhibit A — Engineer's services) EJCDC E-500 Agreement Between Owner and Engineer for Professional Services Copyright 0 2008 National Society of Professional Engineers for EJCDC. All rights reserved.