PSA - Design Services New Fellows Booster Station – Donohue & Associates

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Page 2 (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. 1.Modeling analysis of supplying water to the South Pressure Zone during different scenarios of Fellows BS operability (e.g. staged availability, no availability, etc.). a.The Owner owns and maintains a WaterCAD hydraulic model of the Owner’s water distribution system. It is assumed that said model adequately represents the system as it currently exists. Both Engineer and the Owner agree that the Owner will provide Engineer with the most up-to-date version of the model for use as part of this project. 2.Development of procurement drawings and specifications for a new packaged booster pumping station, which will likely include: a.Four (4) 3,200 gpm pumps on VFDs b.Emergency Generator and Automatic Transfer Switch c. Associated SCADA communication & controls 3.At this time, the Owner has indicated that the replacement BS will preferably consist of four (4) 3,200 gpm variable frequency drive (VFD) pumps. Due to the uncertainty of this pumping configuration’s potential effect on the existing distribution network, Engineer’s efforts shall include running a series of hydraulic model scenarios (not more than three) that would test the hydraulic capacities of the system and propose various pump sizes and numbers of units. This modeling will be done utilizing the Owner provided model mentioned previously. 4.The new station shall have horizontal split case booster pumps. The acceptable manufacturers of those pumps will be collaboratively determined by the Owner and Engineer. 5.The new booster pumps shall be specified to run on VFDs in order to provide smooth flow transitions and to reduce surges in the system. 6.The new booster station will include a new emergency standby generator (exterior) with a sound attenuating enclosure and an automatic transfer switch. This generator will be minimally sized to continuously run three (3) of the new booster station pumps at 70% of their maximum speed. 7.The station is to be provided with modern controls and supervisory control and data acquisition (SCADA) components. Engineer will coordinate the preliminary SCADA design with the Owner and potential packaged booster station manufacturers. 8.The new booster station shall be fitted with a bridge crane over the pumps, so that motors, pumps, valve and fittings can be lifted out of (or into) their positions and out to an open work area, where maintenance personnel can easily commence with work on these components. The goal is that Owner personnel should not have to set up portable gantries or cranes to remove or work on the pumps and their appurtenances. 9.The water mains within the Fellows BS property include very old cast iron and ductile iron pipes. It is anticipated that many of these pipes have served their useful life and as such, are in need of replacement. As part of this preliminary design, Engineer will include main