R2022-128 Resolution Accepting the Bid and Authorizing the Execution of a Contract with Dunn Company, A Division of Tyrolt, Inc., for Annual Street Restoration Project, City Project 2022-08

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SUPPLEMENTAL SPECIFICATIONS SECTION 352: SOIL—CEMENT BASE COURSE 352.01 Description. Add the following to this Article: "The reconstruction work and the order in which it is conducted will be as follows: 1 Pulverizing and tilling the existing street surface and its base material to the required O g g g q ed depth than compacting and removing excess material from the street to achieve final grade (Pay Item(s): Pulverize Shape And Compact, Earth Excavation). ' (2) Construction of the soil — cement base course (Pay Items: Cement, Processing Soil- Cement Base Course). ' (3) Cold mill the stabilized surface to level and provide the proper cross slope to the Soil- Cement base course prior to overlay (Pay Item: Shaping and Grading Roadway). Each street segment shall be reconstructed from initial pulverizing and tilling to final bituminous surfacing within 5 working days." 352.07 Pulverizing. The first sentence of this Article is rewritten as follows: The street surface and base material shall be scarified, pulverized and mixed together to the depth of reconstruction prior to being shaped to the proper grade as specified in Article 352.06 and prior to application of the cement." 352.13 Protection and Cover. RC-70 or CSS-IH will be used to meet the bituminous material requirements of this Article. 352.15 Opening to Traffic. Article 701.17(b)(2) shall be changed to require a curing period of 36 to 48 hours before the soil-cement base course is opened to traffic. 352.16 Maintenance. Add the following paragraphs to this Article: "The Contractor may adjust valve boxes and manholes during their operations to protect them from damage. Valve boxes or manholes temporarily lowered shall be adequately protected from material or liquids entering them and from construction operations. The location of all valve boxes and manholes shall be recorded, in writing, for use in relocating them in the event of ' an emergency or to adjust to final grade. The Contractor shall confine their work to the limits designated by the Engineer and spillover outside of this area shall be avoided. Any corrective work or cleanup caused by spillover or negligence on the Contractor's part shall be corrected by the Contractor at no cost to the City. 13