SECTION 249 - RIPRAP FOR EROSION CONTROL
249.01 Description. Riprap for erosion control cons ists of furnishing and installing
riprap for the purpose of temporary erosion control by intercepting and slowing the flow of sediment-laden runoff water, or for use as a temporary dam. It also includes the maintenance and removal of riprap when no longer needed. Remove and reset riprap consists of the removal and relocation of riprap to other locations shown on the plans, directed by the Engineer, or indicated on the Contractor’s Erosion Control Plan. Riprap shall be installed in accordance with the specifications in reasonably close conformity with the locations and dimensions shown on the plans or as directed by the Engineer.
249.02 Materials. Stones for riprap shall be Size 100 meeting the requirements of
Subsection 705.04.
249.03 Construction Requirements. Riprap shall be used to construct a berm/dam that
will intercept sediment-laden storm water runoff from disturbed areas, create a retention pond, detain sediment, and release water in sheet flow. The riprap installation shall be maintained in good condition by the Contractor. All necessary work and materials to maintain the integrity of the installation shall be provided until earthwork construction is complete and permanent erosion-control features are in place. The maintenance of the riprap will not be paid for separately and will be included in the cost for riprap for erosion control. When required, existing riprap may need to be removed and reset at other locations. These locations may be for additional tempor ary erosion control or may be placed in permanent locations designated by the Engineer.
249.04 Method of Measurement. Riprap for erosion control will be measured per ton.
Remove and reset riprap shall be measured per cubic yard, FM.
249.05 Basis of Payment. Riprap for erosion control, measured as prescribed above,
will be paid for per ton, which prices shall be full compensation for furnishing, installation, maintenance of the installation, and removal/disposal after construction has been completed; and for all labor, tools, equipment and incidentals necessary to complete the work. Remove and reset of riprap, measured as pr escribed above, will be paid for per cubic yard, which prices shall be full compensation for loading, transporting, installing, maintenance of the new installation, and removal/disposal after construction has been completed; and for all labor, tools, equipment and incidentals necessary to complete the work. Payment will be made under: 249-A: Riprap for Erosion Control - per ton 249-B: Remove and Reset Riprap - per cubic yard
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