SECTION 210 — TEMPORARY SEDIMENT BASIN — TEMPORARY SEDIMENT BASIN
210.01 Description.
This work includes providing temporary sediment basins for water pollution prevention in conformity with the required dimensions and details. Install all erosion, sediment, and pollution prevention controls and devices before the start of excavation when required by the SWPPP/SESC. SECTION 907 addresses dust control to reduce dust nuisance and hazards.
210.02 Materials.
The materials required for the construction of temporary sediment basin will be on the Plans.
210.03 Construction Methods.
Construct t he temporary sediment basin to retain in the basin any material that may cause damage to a natural water course or the surrounding environment . If the basin is temporary, restore the area where the basin is located to its original condition. Excavate the temporary sediment basin from the downstream end of the basin proceeding to the upstream end. Before initiating excavation, construct temporary baled straw ditch erosion checks and/or straw log check dams immediately beyond the downstream end of the basin. When the work requiring the temporary basin is complete, remove the control measures.
210.04 Method of Measurement.
Temporary Sediment Basin will not be measured by a single unit of measurement. Rather, each individual item of work required to provide these basins will be measured by their respective units of measurement for the quantity provided.
210.05 Basis of Payment.
Temporary Sediment Basin will not be paid for as completed facilities. Rather, each basin will be paid for at the C ontract unit prices for those items of work required to construct the facility and , for temporary basins, those items of work necessary to remove the basin and restore the area to its original or proposed condition and all incidentals required to finish the work, complete and accepted. The cleaning and maintenance of Temporary Sediment Basin will be paid under SECTION 212.
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