• The need for a sediment trap(s) for dewatering. Ensure that sediment traps for dewatering are sized appropriately for the catchment area and that there is enough space available to construct them. (805.07.09)

• The need for filter bags, and the type, Class and filtration opening size (FOS) of geotextile to be used. (805.07.10)

• Appropriate volume of water to be filtered. (805.07.10)

• The need for a turbidity curtain(s). (805.07.11)

• The need for and design of a cofferdam(s). (805.07.12)

• Whether sediment removal is to be measured by volume or time. (805.09.01.06)

The designer should ensure that the General Conditions of Contract and the 100 Series General Specifications are included in the Contract Documents.

Related Ontario Provincial Standard Drawings

OPSD 219.100 Light-Duty Straw Bale Barrier
OPSD 219.110 Light-Duty Silt Fence Barrier
OPSD 219.120 Light-Duty Fibre Roll Barrier
OPSD 219.130 Heavy-Duty Silt Fence Barrier
OPSD 219.131 Heavy-Duty Wire-Backed Silt Fence Barrier
OPSD 219.150 Sandbag Barrier
OPSD 219.160 Fibre Roll Grade Breaks
OPSD 219.180 Straw Bale Flow Check Dam
OPSD 219.191 Fibre Roll Flow Check Dam
OPSD 219.200 Sandbag Flow Check Dam
OPSD 219.210 Temporary Rock Flow Check Dam V-Ditch
OPSD 219.211 Temporary Rock Flow Check Dam Flat Bottom Ditch
OPSD 219.220 Sediment Trap In Ditch
OPSD 219.230 Temporary Slope Drain For Sediment Trap
OPSD 219.231 Temporary Berm Barrier
OPSD 219.240 Sediment Trap for Dewatering
OPSD 219.260 Turbidity Curtain
OPSD 219.261 Turbidity Curtain Seam Detail