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- 18-1.03B Equipment
- 18-1.03C Mixing and Application Rates
18-1.03 CONSTRUCTION18-1.03A GeneralMonitor dust conditions and apply a dust palliative for dust control as described and as ordered. Reapply the dust palliative at any time to control dust. Apply a dust suppressant to: 1. Temporary haul roads 2. Construction staging, material storage, and layout areas 3. Compacted soil or AB roads or driveways 4. Paved surfaces Apply a dust control binder to: 1. Rough-graded soils 2. Completed slopes 3. Soil stockpiles unless another practice is already used Do not use a dust suppressant or dust control binder within 100 feet of a wetland or body of water. 18-1.03B EquipmentApply dust suppressants that are miscible in water with either (1) a pressure-type water distributor truck equipped with a spray system or (2) a pressure-type asphalt distributor truck as specified in section 37-1.03B. Apply dust suppressant flakes to the surface using a spreader or spinner disk. Apply dust control binders with either (1) a pressure-type water distributor truck equipped with a spray system or (2) hydraulic spray equipment as specified for applying hydromulch in section 21-2.03D.
Apply hygroscopic dust suppressants under the manufacturer's instructions. Apply calcium chloride flakes to a moist surface. Allow surfaces treated with a dust suppressant to cure before opening them to traffic. Adequate cure occurs when moisture is evaporated, sheen is gone, and tracking is nonextant. Use the mix proportions and application rate for the corresponding dust control binder as shown in the following table:
Do not allow stormwater runoff from polyacrylamide treated soils unless water passes through: 1. Sediment basin if the total drainage area is greater than or equal to 5 acres. 2. Sediment trap or a series of check dams if the total drainage area is less than 5 acres. Maximize the number of check dams used and space them evenly in the drainage channel such that sediment settlement is maximized.
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