Agenda - Council - 09/27/2016 - Laserfiche WebLink

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Additional Required Improvements During construction it was discovered that five areas of Sunwood Drive were constructed with less than 2-inches of bituminous pavement. Therefore, approximately 1'/2" of the existing aggregate base was removed in each area and approximately 1'/2" of base bituminous pavement was placed on top of the remaining compacted aggregate base to provide a minimum of 3'/2" of bituminous pavement along this segment of Sunwood Drive. The additional pavement tonnage required to complete this work will be paid through the existing bituminous pavement pay item. During construction it was also discovered that an additional 580 linear feet of concrete curb and gutter needed to be removed and replaced due to significant cracking and failing joints. Such damage allows stormwater runoff to infiltrate through the curb and into the pavement base and subgrade thereby weakening the pavement base and increasing the potential for damage due to freeze -thaw cycles. This additional footage of curb and gutter removal and replacement is well in excess of 25% of the plan quantity so staff negotiated a linear foot cost with the contractor for the removal and replacement of this additional curb and gutter to be considered by Council in a separate case this evening. It was also discovered during construction that one catch basin needed to be reconstructed by hand using block and mortar instead of using a prefabricated concrete catch basin as specified in the plans. This was due to the existing elevations and geometry of the storm sewer pipes. This additional work is also being considered by Council in a separate case this evening. Notification: Anoka County requires that assessments be certified to the County Auditor by November 30th for collection on next year's taxes. This deadline will be met by conducting the Assessment Hearing at the October 25th City Council meeting, which will also allow adequate time for the publication and mailing of notices. Following Council approval, an Assessment Hearing Notice will be published in the City's official newspaper on Friday, September 30th, and Assessment Hearing Notices will be mailed to all benefiting property owners as required per Minnesota State Statute Chapter 429. Observations/Alternatives: Observations: At the time this case was prepared construction was substantially complete. Construction should be completed by the time the Assessment Hearing is conducted on October 25th. Alternatives: Alternative Action #1 — Motion to adopt Resolution #16-09-174 ordering the preparation of an assessment roll and calling for an Assessment Hearing for 2016 Mill and Overlay Improvements; Improvement Project 16-00 Division B on October 25th, 2016. Alternative Action #2 — Motion to deny adoption of Resolution #16-09-174 at this time. Funding Source: This improvement project was included in the City's 5-year Capital Improvement Plan for construction in 2016 and was proposed to be funded using a combination of street reconstruction and overlay bond funds, special assessments to benefiting properties, and stormwater utility funds. The contract amount for this project (Valley Paving, Inc.) is $179,196.21 which is $83,665.79 below the engineer's construction cost estimate of $262,862.00. Final project costs, which will include actual construction costs and indirect costs covering administrative, engineering, finance and legal fees, are estimated to be $232,783.68 using 14% of construction costs for and indirect cost estimate. This estimated cost assumes Council approval of Change Order #1 and no significant quantity revisions or other change orders prior to completion of construction. Per the City's adopted Special Assessments Policy, special assessments amounting to 25% of eligible street overlay project costs are intended to fund a portion of overlay projects. However, since only three properties have direct