Discussion and Consideration of Change Order #2 – Tricon Construction – Tiffin Water Treatment Facility Upgrade Project – Motion to Approve — K.4

Clint Wienen, PE | Senior Project Engineer MSA Professional Services, Inc. 100% Employee Owned +1 (563) 584-2897 From: Nead, Eric <[email protected]> Sent: Monday, February 9, 2026 11:43 AM To: Gary Ganoe <[email protected]>; Clint Wienen <[email protected]> Cc: Lyons, Douglas <[email protected]>; [email protected] Subject: RE: Tiffin WTP Low Lift Pumps - 0915659 Gary, In addition to what you stated below, Hydraulic Institute has an exception on e2iciency with pump power input of 10kw (13hp) or less. See attached. Thanks, Eric Nead Direct +1 913.748.4147 Mobile +1 913.291.9386 Confidentiality Note: This email may contain confidential information intended for the use of the addressees named above. If you are not the intended recipient of this email, you are hereby notified that you must not disseminate, copy or take any action in respect of any information contained in it. If you have received this email in error, please notify the sender immediately by email and immediately destroy this email and its attachments. From: Gary Ganoe <[email protected]> Sent: Tuesday, February 3, 2026 11:30 AM To: Clint Wienen <[email protected]> Cc: Nead, Eric <[email protected]>; Lyons, Douglas <[email protected]>; [email protected] Subject: RE: Tiffin WTP Low Lift Pumps Clint, Andrew Larson provided part of the explanation: Testing is done with TEST motors unless specifically called out with JOB motor. The test motors have known e iciency and power factor. Some refer to them as Calibrated motors. Submittals are generally calculated e iciency. Tend to be per a 2B grade. If a specific e iciency is called out to a specific Hydraulic Institute Grade it will be noted on the curve. Quality control will evaluate per the noted call outs. What I do see is the submitted pump is Non Overloading 10HP. 6