TIC 2020-09-21 Agenda Front Sheet

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Allan Eber, �. �ayr. Public "cr e entrIPo Int ri tree° INFORMATIONAL MEMORANDUM TO: Transportation & Infrastructure Committee FROM: Had Ponnekanti, Acting Public Works Director BY: Michael Ronda, PW Project Manager CC: Mayor Ekberg DATE: September 18, 2020 SUBJECT: 2019 Small Drainage Program Project No. 91941201, Contract No. 19-163 Project Completion and Acceptance ISSUE Accept contract as complete and authorize release of retainage and performance bonds. BACKGROUND The Notice to Proceed for Contract No. 19-163 with KC Equipment LLC, of Seattle Washington, was issued on January 6, 2020 for the 2019 Small Drainage Program. This project provided for drainage improvements at seven locations within Tukwila including access improvements at critical maintenance facilities, repairs to several sections of pipe in the Tukwila storm drainage system and cast -in -place pipe liners at five specific locations. DISCUSSION Construction was physically completed on April 1, 2020. One change order for $3,658.86 was executed and several minor changes were implemented through the Force Account (FA) and Field Directive (FD) process. These changes included using a slightly modified liner method which should provide a better quality product for the existing field conditions, removal of an illicit connection to the storm system prior to lining and modifications to a handrail at one of the intake structures to meet current safety standards. FINANCIAL IMPACT The construction contract at award was $434,267.50, and the total project budget included a 10% contingency for a total of $477,694.25. Changes in underruns and overruns experienced in existing unit price items were due to minor changes in material quantities measured during construction and amounts charged to the force account items. These under/over quantities only slightly exceeded the original contract amount and the project was completed with using just under 2% of the contingency. Construction Contract Changes and Net Over/Under Quantities Total Final Contract Amount Project Costs $434,267.50 7,848.44 $442,115.94 RECOMMENDATION Council is being asked to formally accept the 2019 Small Drainage Project with KC Equipment LLC, in the amount of $442,115.94 as complete and authorize the release of the retainage and performance bond, subject to standard claim and lien release procedures, and consider this item on the Consent Agenda at the October 5, 2020 Regular Council Meeting. Attachments: Notice of Completion Contract #19-163 https://tukwilawa.sharepoint.com/sites/publicworks/engineering/PW Drop Box/01 TIC Agenda/2020 Agenda Items/TIC 09-21-2020/01.2019 Small Drainage Closeout/Info Memo 2019 SDP Final Acceptance - 07-16-1 2020.doc