11 - Johnson Woods Sewer & Drainage Improvements - authorize CO #2-close out contract- and accept improvements

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Item No. 11 TO: Mayor & City Council Gene Anderson, Interim City Manager FROM: Carla Easton, City Engineer SUBJECT: JOHNSON WOODS SEWER & DRAINAGE IMPROVEMENTS CONTRACT CLOSE OUT WITH RBIS, LLC DATE: February 4, 2020 BACKGROUND: The Johnson Woods Sewer & Drainage Improvement project was planned and scheduled as part of the 2013 Bond Fund for Water and Sewer Improvements. It included replacement of sanitary sewers and channel restoration along the drainage channel running from Lamar Avenue to Clark Lane, located between Johnson Woods Drive and 31St St SE. AECOM and Hayter Engineering Inc. prepared the construction drawings and specifications. The Johnson Woods construction project was awarded to RBIS, LLC on April 8, 2019, for a contract amount of $1,499,501.00 and contract time of 270 calendar days. Change Order 41 was administratively approved by John Godwin on June 13, 2019, increasing the contract amount by $40,529.60 in order to cover the cost to install the sewer main by bore rather than open trench, saving significant time and inconvenience to the neighborhood. During the course of the project, several contract items were overrun due to field conditions, including extension of a gabion wall, fence replacement, an additional sewer manhole, and rock riprap needed to line the creek bed near Lamar Avenue. Approval of a final reconciliation change order in the amount of $57,955.54 is needed with project close out. The project was completed within 230 calendar days. STATUS OF ISSUE: RBIS, LLC has completed all work under this contract. A final walkthrough of the project was performed on January 13, 2020, and all punch list items have been addressed. The engineer of record has reviewed all close out documents and recommends approval of final payment. The total pay amount to RBIS, LLC for all work under this contract is $1,597,986.14. Progress payments have been made in accordance with the contract documents, and the only remaining payment is for the retained amount of $79,899.31, which will be released upon approval of Change Order #2 and final acceptance by City Council. Staff will retain $5,000 until full vegetation along the creek is established and verified this spring.