TIC 2017-01-24 Item 2F - Final Acceptance - 2015 Commercial Business District Sanitary Sewer Rehabilitation with Michels Corporation

Browse Search

TO: FROM BY: CC: DATE: City of Tukwila Allan Ekberg, Mayor Public Works Department - Bob Giberson, Director INFORMATIONAL MEMORANDUM Transportation and Infrastructure Committee Bob Giberson, Public Works Director Peter Lau, Senior Program Manager Mayor Ekberg January 20, 2017 SUBJECT: 2015 Commercial Business District Sanitary Sewer Rehabilitation Project No. 91140203, Contract No. 15 -178 Project Completion and Acceptance ISSUE Accept construction contract as complete and authorize release of retainage. BACKGROUND The Notice to Proceed for Contract Number 15 -178 with Michels Corporation of Salem, Oregon was issued on December 7, 2015. This construction project installed approximately 6,510 lineal feet of cured -in -place pipe (CIPP) within the right -of -way of Andover Park East, Industry Drive, Minkler Boulevard and private easements in order to rehabilitate existing sewer pipes. DISCUSSION The CBD Sanitary Sewer Rehabilitation Project was physically completed on June 9, 2016. The extended time for closeout is due to the emergency repair needed for collapsed sewer main found while preparing to execute this slip - lining contract. FINANCIAL IMPACT The construction budget for the is CBD Sanitary Sewer Rehabilitation Project was $634,157.42. Only one change order was executed in an amount of $26,244.60. Unit price under -runs were mainly due to finding that some sections of the sewer pipe were collapsed after contract award and before construction began. A portion of the 12 -inch CIPP quantity was not installed in those collapsed sewer pipes and were repaired under a separate contract. Retainage is being held by the City in the amount of $23,256.21. Expenses Construction Contract Amount (pre -tax) $482,616.00 Change Order No. 1 26,244.60 Unit Price Under -runs (43,736.50) WA State Sales Tax 44,186.79 Total Contract Amount 5509,310.89 RECOMMENDATION Council is being asked to formally accept the 2015 Central Business District Sanitary Sewer Rehabilitation contract with Michels Corporation in the amount of $509,310.89 as complete, and authorize the release of retainage subject to standard claim and lien release procedures, and to consider this item on the Consent Agenda at the February 6, 2017 Regular Council Meeting. Attachment: Notice of Completion, Contract #15 -178 47 w t W EnMPROJECT • SW Projecle CBD Sewer Reltabilhation (81140209)`2015 CBD SeweAConstrudlortV 700 - Post Construction d Ciaseouttlnfo Memo 2015 Sewer Rehab Close 012017 gil dGcx