16-14 side. Install excelsior matting over sediment control stone as shown in the plans. Apply
4 oz of flocculant to the top of the excelsior mattin g section .
C.Type B Construct temporary rock silt check T ype B devices as shown in the plan s and at other locations as directed by the Engineer . 1633 -4 MAINTENANCE AND REMOVAL Maintain the temporary rock silt checks, remove and dispose of silt accumulations at the silt checks in accordance with Section 1630 and as directed by the Engineer . Remove temporary rock silt checks as the project nears completion. The actual tim e of removal will be as directed by the Engineer . After removal of silt checks, dress the area to blend with existing contours and seed and mulch the area in accordance with Section 1660. Reapply flocculant after every rainfall event that equals or exceed s 0.5 inches. 1633 -5 MEASUREMENT AND PAYMENT Payment for temporary rock silt checks will be as follows: Stone for Erosion Control, Class ____ will be measured and paid in accordance with
Article 1610 — 4.
Sediment Control Stone will be measured and paid in accordance with Article 1610- 4. Silt Excavation will be measured and paid in accordance with Article 1630- 3. Matting for Erosion Control will be measured and paid in accordance with Article 1631 -4. Flocculant will be measured and paid for by the actual weight in pounds of flocculant applied to the temporary rock silt checks. Such price and payment will be full compensation for all work covered by this section, including but not limited to, furnishing all materials, labor, equipment and incidentals necessary to apply the Flocculant . Payment will be made under: Pay Item Pay Unit Flocculant Pounds 1634 -1 DESCRIPTION Construct, maintain and remove devices placed in ditches, diversions, swales or drainage turnouts to reduce water velocity and contain sediment. The actual conditions whi ch occur during the construction of the project will determine the quantity of temporary rock sediment dams constructed. The quantity of rock sediment dams may be increased, decreased or eliminated entirely as directed by the Engineer . Such variations in quantity will not be considered as alterations in the details of construction or a change in the character of the work. 1634 -2 MATERIALS Refer to Division 10. Item Section Sediment Control Stone, Standard Size No. 5 or 57 1005 Stone for Erosion Control, Class 1 or Class B 1042 Coir Fiber Mat 1060 -14
Source: North Carolina Standard Specifications for Roads and Structures, 2024 Edition. Pages 764–764 of 857.