K-3 - Pay Estimate 23 - Final - Portzen Construction - WWTP Phase Two

PAYMENT NUMBER 23 (FINAL PAYMENT) WITH RELEASE OF RETAINAGE CONTRACTOR: Portzen Construction, Inc. ADDRESS: 205 Stone Valley Drive CITY, STATE, ZIP Dubuque, IA 52003 OWNER: CITY OF TIFFIN PROJECT: WWTP EXPANSION PHASE II PROJECT HFC#16218.204 <table> <tr> <th>Date of Completion:</th> <th>Amount of Contract:</th> <th>Date of Estimate:</th> </tr> <tr> <td>Original: June 1, 2019</td> <td>Original: $5,685,007.75</td> <td>From: Apr 1, 2020</td> </tr> <tr> <td>Revised: October 15, 2019 CO 7</td> <td>Revised: $5,798,931.95</td> <td>CO #1-7 To: Oct 31, 2020</td> </tr> </table> <table> <tr> <th></th> <th>THIS PERIOD</th> <th>TOTAL TO DATE</th> </tr> <tr> <td>Amount Earned</td> <td>37,837.30</td> <td>$ 5,809,635.73</td> </tr> <tr> <td>Add Material Stored On-Site</td> <td>$ -</td> <td>$ 1,103,986.27</td> </tr> <tr> <td>Subtract Materials Installed On-Site</td> <td>$ -</td> <td>$ 1,103,986.27</td> </tr> <tr> <td>Subtotal</td> <td>$ 37,837.30</td> <td>$ 5,809,635.73</td> </tr> <tr> <td>Retainage</td> <td>$ (38,961.82)</td> <td></td> </tr> <tr> <td>Previous Payments</td> <td></td> <td>$ 5,732,836.60</td> </tr> <tr> <td>Amount Due</td> <td>$ 76,799.12</td> <td>$ 76,799.12</td> </tr> </table> Estimated % of Job Complete Based on Amount Earned/Contract Amount only This does not constitute work completed to date 100% Is Contractor's Construction Progress on Schedule? YES NO N/A X I hereby certify that I have carefully inspected the work and as a result of my inspection and to the best of my knowledge and belief, the quantities shown in this estimate are correct and have not been shown in previous estimates and the work has been performed in accordance with the contract documents. HART-FREDERICK CONSULTANTS P.C. By: [signature] Title: Benjamin A. Carhoff, P.E., Project Engineer Date: January 7, 2021 Approved by Owner's Representative: By: ____________________________ Title: ____________________________ (Additional signatures -- if required) By: ____________________________ Title: ____________________________