Agenda - Council - 05/14/2019 - Laserfiche WebLink

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The existing bituminous pavement and aggregate base sections will be removed first, and then 2-feet of the unsuitable existing clay subgrade material will be removed. Geotextile fabric will be placed over the shaped and compacted subgrade, and 2-feet of compacted select granular borrow (sand) will be placed on top of the fabric. Drain tile will be installed on top of the fabric along the outside edges of the select granular borrow, and will connect to a storm sewer structure to drain the subgrade at low points. Then 4-inches of imported aggregate base will be placed and compacted on top of the select granular borrow, followed by 3'/2-inches of new bituminous pavement. The new pavement section will provide a 7-ton pavement design, the City standard for residential streets. Existing ditches will require re -grading due to the subgrade corrections, and some driveway culverts will require replacement. The culvert crossing 180th Lane will be replaced, and a storm manhole will be added to the culvert crossing to allow for drain tile connections. In addition, a new swale will be graded across a corner of one property to prevent runoff from the ditch from traversing through the property where no easement currently exists. Bids On May 1, 2019, two (2) sealed bids were received and were publicly opened. The bids were generally competitive and complied with the advertisement for bids. A summary of bids is below and in the attached resolution. CONTRACTOR BASE BID ALTERNATE BID TOTAL BID Asphalt Surface Technologies $249,901.55 $12,601.70 — $262,503.25 Northwest $299,982.36 $14,632.60 $314,614.96 Engineer's Estimate $190,942.75 $10, 794.80 $201, 737.55 Asphalt Surface Technologies of Saint Cloud, Minnesota, submitted the lowest responsible total bid of $262,503.25 for constructing the base bid ($249,901.55) plus alternate bid ($12,601.70) in accordance with the approved plans and specifications and advertisement for bids. This bid is $60,765.70 (30.1%) more than the engineer's estimate of $201,737.55. Following award of Contract, a Notice of Award will be issued to Asphalt Surface Technologies to initiate execution of a contract and issuance of the required bonds and insurance. The City Attorney will verify that the contract, bonds, and insurance are in proper legal form prior to execution of the contract. Once the Contract is executed, staff will issue a Notice to Proceed so construction can begin. At this time, it is anticipated that construction will begin in June or early July, depending on the Contractor's availability. A preconstruction meeting will be held before construction begins. Staff will then mail letters to abutting property owners to provide updates on the proposed construction schedule and operations based on the Contractor's input at the preconstruction meeting. The letter will also contain a link to the City's web site where up-to-date information can be found during construction, as well as contact information in case property owners wish to contact the Contractor or City project inspector for any reason. Project schedule: May 14 — Accept Bids / Award Contract June / early July — Begin construction August 16 — Substantial completion (open to traffic) September 10 — Order Assessment Hearing October 8 — Conduct Assessment Hearing Public Comment Staff conducted a public information meeting for this project on Thursday, November 8, 2018. The purpose of the meeting was to present the proposed improvements, estimated costs, funding program, and preliminary project schedule to benefiting property owners, and to receive public input on the project. Property owners from 3 of the 8 identified benefiting properties attended. None of the owners objected to the project. Most questions pertained to special assessments and the reasoning behind the School Districts request to expand the cul-de-sac. The residents questioned why the School District asked the City to expand the cul-de-sac now, and noted that they continue to see