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r: FIE S TECHNICAL MEMORANDUM To: Don Peterson, Director of Public Works From: Aaron Vollmer, PE and Abbie Browen, PE, Advanced Engineering and Environmental Services, Inc. (AE2S) Re: Mounds View — 2019 Water Treatment Plant Rehabilitation Introduction October 7th, 2019 Council Work Session Information Date: September 30, 2019 BACKGROUND The Public Works Department has many responsibilities including efficiently operating the water distribution system. The system includes (6) wells, an elevated water tower, a ground reservoir, a booster station and (3) water treatment plants (WTP). The water treatment systems have been in operation for over 25 years with no major upgrades or repairs to the system. Routine maintenance has been performed on the well motors and pumps and the operating systems and controls have had only minor repairs. Public Works has discovered that many of the components are obsolete and no longer are available to make repairs. Back on October 3'd, 2016, the Public Works Department, with AE2S, presented the findings of a water production study and water system management program to the City Council. At this meeting staff recommended engineering and bidding for the needed improvements in 2019, with construction taking place in 2020 and 2021. At the March 25th, 2019 Council Meeting, the City Council approved AE2S to perform a water study and proceed with design and bidding phases of the rehabilitation of WTP No. 1, WTP No. 2, WTP No. 3, and the Booster Station. Currently, AE25 is working towards the 95% milestone of the final design phase, with bidding anticipated at the end of October. The following sections describe the scope of the rehabilitation at each facility. The purpose of this technical memorandum is to summarize for and inform City Council of the planned improvements to be including in the bidding package to be awarded by the end of 2019. P01008-2013-001 Page 1 of 7 Think Big. Go Beyond. 40www.ae2s.com 40 ncs-