Reg 2019-05-06 Item 4D - Final Acceptance - Andover Park East Water and Sewer Replacement with Titan Earthwork for $3,887,443.57

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ity of Tu Public Works Department - Henry Hash, Director INFORMATIONAL MEMORANDUM TO: Transportation & Infrastructure Committee FROM: Henry Hash, Public Works Director - BY: Michael Ronda, PW Project Manager CC: Mayor Ekberg DATE: April 12, 2019 SUBJECT: Andover Park East - Water and Sewer Replacement Project No. 99940103 & 91440204, Contract No. 16-111 Project Completion and Acceptance Allan Ekberg, Mayor ISSUE Accept contract as complete and authorize release of retainage and performance bonds. BACKGROUND The Notice to Proceed for Contract No. 16-111 with Titan Earthwork LLC, of Pacific Washington, was issued on September 26, 2016 for the Andover Park East (APE) Water and Sewer Replacement Project. This project provided new and upgraded water and sewer lines on APE between Strander Boulevard and Tukwila Parkway, in support of future development in the CBD. The project also provided new pavement and select roadway improvements. DISCUSSION Construction was physically completed on March 15, 2018. Thirteen change orders were executed. The major changes consisted of impacts to the new sewer line due to unforeseen subsurface conditions in Strander Blvd and along the frontage of Hotel Interurban, as well as increased curb, gutter and sidewalk revisions throughout the project boundary. After extended negotiations, a final settlement change order was processed for $200,000, which was significantly less than what the contractor had initially submitted. FINANCIAL IMPACT The construction budget for the APE Water and Sewer Replacement Project was $4,556,089.38 which included a 30% contingency of $1,051,405.24, mainly due to the high -risk nature of the work (mostly deep utilities). Underruns were due to savings in unit price items that were included in change orders and the elimination of the use of concrete sleds that were envisioned for extremely unsuitable foundation conditions. The contractor obtained a retainage bond. Expenses Construction Contract $3,504,684.14 Change Order Total 662,031.88 Net Under -runs (279,272.45) Total Contract Amount $3,887,443.57 RECOMMENDATION Council is being asked to formally accept the Andover Park East Water and Sewer Replacement Project with Titan Earthwork LLC, in the amount of $3,887,443.56 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 May 6, 2019 Regular Council Meeting. ATTACHMENT Notice of Completion, Contract #16-111 W:1PW Eng1PROJECTSIA- WT Projects'APE Water Main Replacement (99940103)1Construction14.400 - ProjectTracking1005 - Milestone Docs1(025) - Notices of Completionllnfo Memo APE Final Acceptance - 04- 16-2019.dac 15