City Council Minutes 02-24-2025 WorkshopMINUTES
MONTICELLO CITY COUNCIL WORKSHOP
Monday, February 24, 2025 — 5:00 p.m.
Academy Room, Monticello Community Center
Present: Lloyd Hilgart, Kip Christianson, Charlotte Gabler, Tracy Hinz, and Lee Martie
Absent: None
Staff: Rachel Leonard, Matt Leonard, Angela Schumann, Sarah Rathlisberger, Tom
Pawelk
Others: Tim Olson (Bolton & Menk), Aaron Vollmer (AE2S), Luke Appert, Cushman &
Wakefield
1. Call to Order
Mayor Lloyd Hilgart called the workshop to order at 5:00 p.m.
2. Discussion on south Monticello utility studies
Matt Leonard, Public Works Director/City Engineer, gave a brief overview and
introduced Tim Olson, Bolton & Menk, and Aaron Vollmer, AE2S, to present the utility
impacts of a future data center development.
Tim Olson gave an update on the sewer impacts to the Wastewater Treatment Facility
and potential impacts of the collection system and that they looked at a variety of end
users, including a data center. He noted that they reviewed an impact of half million
gallons per day to three million gallons per day. He noted the current flow and flows of
other potential future users, and to accommodate a data center, a Wastewater
Treatment Facility expansion would be needed. An overview of the improvements
would be needed to the sewer collection system which included the extension of the
Fallon Avenue trunk sewer main. Mayor Hilgart questioned when expansion of this
system should take place. Mr. Olson responded the time may be now.
Mr. Olson provided various options that the City would be looking at in the future. There
is the need for final determination of projected flows.
There was a question on estimated cost. Mr. Olson responded that there isn't a
determined cost as of yet. Luke Appert, Cushman & Wakefield, consultant for a data
center, added that the developer expects to pay for some, if not all, of the utility
expansion costs.
Aaron Vollmer then gave an update on the water system. The update included
information on the water system demand projections, the hydraulic model results, data
City Council Special Meeting Minutes — February 24, 2025
center hydraulic analysis and results, raw water supply evaluation, and water treatment
planning. The data center analysis reviewed 20 scenarios. The results showed that the
city's demand would double.
Mr. Vollmer provided recommendations regarding maximum infrastructure, storage
considerations and new well sites. Mr. Vollmer noted that the aquifer that supplies the
City's well is prolific and provides good source water. All proposed well sites are in good
shape, except for well 5.
An overview of expansion options of the Water Treatment Plant was provided to
accommodate this project. Mr. Vollmer noted a suggested schedule of obtaining a
Construction Manager At Risk (CMAR) with a contract being approved in May 2025. It
was noted that utilizing a CMAR for the project would provide additional flexibility to
make changes during design and construction of the facility.
Mr. Vollmer ended with recommended next steps. These were to continue the
conversation with the data center on water quality needs, discuss potential water use
increase with DNR, finalize potential well sites, and consider near -term and long-term
improvements needed by the data center. Matt Leonard noted that the applicant has
also indicated that they are investigating the possibility of infiltrating the cooling water
for an aquifer recharge system.
3. Adjournment
By consensus, the meeting was adjourned at 6:15 p.m.
Recorder: Jennifer Schreiber
Attest:
City Council Special Meeting Minutes — February 24, 2025