Approval of Change Order #3 – Tricon Construction Group – Water Treatment Facility Upgrade — E-3

Tricon Construction, Inc.: Tiffin WTF Upgrades 25-23 Bill to Tricon Construction, Inc. Estimate details P.O. Number: CO #3, #4, #5 1-14-26 Email Sales Rep: Nate Schmidt Estimate no.: 2883 Estimate date: 01/27/2026 Expiration date: 02/27/2026 <table> <tr> <th>#</th> <th>Description</th> <th>Qty</th> <th>Rate</th> <th>Amount</th> </tr> <tr> <td>1.</td> <td>Material and labor to complete masonry related changes per request by Tricon Construction and MSA. Revised request per email and attached documents by MSA, dated 1-21-26 from Tom Shedek to Nate Schmidt.</td> <td></td> <td></td> <td></td> </tr> <tr> <td>2.</td> <td>CO #3 - 4" CMU courses added at Chlorine Room, Caustic Soda Room and Anti Scalant Room. Rebar, epoxy and grout 48" o.c.<br>Add to Base Bid:</td> <td></td> <td>$8,445.00</td> <td>$8,445.00</td> </tr> <tr> <td>3.</td> <td>CO #4 - 4" CMU courses added at Chlorine Room, Caustic Soda Room and Anti Scalant Room. No rebar, epoxy and grout.<br>Add to Base Bid:</td> <td></td> <td>$7,472.00</td> <td>$7,472.00</td> </tr> <tr> <td>4.</td> <td>CO #5 - Remove 1 8" CMU course from base bid heights at all RO building walls.</td> <td></td> <td>-$2,044.00</td> <td>-$2,044.00</td> </tr> <tr> <th colspan="4">Total</th> <th>$13,873.00</th> </tr> <tr> <td colspan="4">Expiry date</td> <td>02/27/2026</td> </tr> </table> Accepted date Accepted by CO Total: $6,401.00