2.4. REMOVING ASPHALT SURFACE MILLING, Item 204.0120 This work shall be in accordance with the requirements of Section 204 of the Standard Specifications, except as hereinafter amended. A. Description: In most cases, milling will involve at least one vertical "butt" joint in order to match existing pavement. Should topographic or other physical constraints prevent a milling machine from making a satisfactory straight line, vertical "butt" joint, the contractor shall provide all labor and equipment necessary to complete the joint by other means. The contractor shall take measures to ensure that large milled areas on the mainline of the highway are not left open for more than 72 hours and not during rain events. The contractor shall be responsible for repairing underlying lower layers of pavement or base course that becomes damaged due to exposure to significant precipitation or traffic following milling. B. Construction Method: When adjacent to an existing concrete gutter, the contractor shall "wedge" cut the existing pavement surface to a width as specified by the County. The depth of the "wedge" cut shall be a minimum of 1 1/2 inches adjacent to the gutter and 1/8 inch on the outside edge towards the street centerline. The depth of cut shall be measured to the top of the ridges. C. Method of Measurement: Milling shall be measured by the square yard of pavement surface ground. Widths of grinding greater than designated by the County shall be at the contractor's expense. D. Basis of Payment: Milling will be paid for at the contract unit price bid for grinding, and shall be full compensation for grinding the existing pavement surface, constructing vertical butt joints, for wedging utility castings after grinding, for street cleaning, and for all equipment, tools, labor, and incidentals necessary to complete the work in accordance with this contract. 2.5. HMA PAVEMENT – Item 460.5000 thru 460.8999 A. Description: Materials covered under this provision shall conform to the State of Wisconsin, Department of Transportation's specifications for each “Type” mix. The contractor will be responsible for providing mix design(s) and for testing required to insure uniformity of mix and adequacy of compaction. A mix design must be submitted to the County for approval a minimum of 2 weeks prior to the start of paving. In no case will paving be allowed to begin until the County is in receipt of said mix design(s). The contractor will be responsible for working with the County to schedule projects promptly after being notified that County work has been completed and the project is ready for paving. The County has listed the earliest date a project will be ready for paving in this RFB, and the County will contact the contractor approximately 2 weeks prior to a project being ready for paving. The contractor is expected to act in good faith (within 1 week of notification) to schedule a paving start date with the County engineer not more than 4 weeks following notification unless approved by the County. The County reserves the right to award a paving project to the 2nd lowest bidder if the lowest bidder is not responsive on scheduling a paving date. If the contractor needs more information on anticipated schedule in the weeks or months leading up to the paving, they can contact the County engineer.
