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CONSIDERATION AND AWARDING OF BID 2021-30 FOR THE PURCHASE OF AGGREGATE AND STONE FOR THE STREET AND STORMWATER DIVISIONS.
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BACKGROUND: The Public Works Street and Stormwater Divisions' Maintenance Programs utilize the following aggregate and stone on a regular basis throughout each year:
Section 1. Class B Bedding Material is used as bedding material and backfill for storm water pipelines.
Section 2. Aggregate Size #1 Washed Chips are used as the cover aggregate for bituminous surface treatments (i.e., chip sealing). This is the base course for a double bituminous application.
Section 3. Fine Aggregate for Concrete, Concrete Sand is used in the snow and ice control program.
Section 4. Aggregate Base, Type A is used as base material for pavement construction. It is also used to stabilize an unimproved section line road.
Section 5. Traffic Bound Surface Course; Type A is used as the surface course of a gravel roadway. It provides a suitable gradation or blend of coarse medium and fine aggregates for the construction of a gravel roadway surface.
Section 6. Cement Kiln Dust is used in subgrade stabilization operations.
Section 7. Select Borrow Subgrade Material is used as embankment and causeway fill in roadway reconstruction operations.
Section 8. Aggregate Base Type B is used to stabilize unimproved rural section line roads comprised of sand and fine silt. It is also used as a component of a filter blanket beneath riprap for stream bank and channel erosion control.
Section 9. 3-inch Surge Rock is used to stabilize unimproved rural section line roads comprised of sand and fine silt. It is also used as a component of a filter blanket beneath riprap for stream bank and channel erosion control.
Sections 10, 11, 12. Riprap is used for stream bank stabilization, erosion control in drainage ways, and flood damage control. It is purchased in 8-inch, 12-inch and 18-inch diameters.
Section 13. Manufactured Sand is coarse sand for winte...
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