| Pathways of Effect | Stressor (Potential Impact) | Mitigation Measures | Negative Residual Effects |
|---|---|---|---|
| a minimum of 30 m from the watercourse and temporarily stabilized and/or contained. | |||
| Uncontrolled release of dewatering effluent from excavation of culvert extension or channel realignment. | Manage dewatering operations from excavation to prevent erosion and/or release of sediment laden contaminated water to Broadway Drain. Design and use temporary settling basins, filter bags and energy discharge diffusers as required. | No residual effects with implementation of mitigation measures. | |
| Use of Industrial Equipment (B2) | Mobile or stationary equipment may release or leak fuel, oil, grease or other contaminant to the watercourse. | Prohibit/limit access to watercourse/watercourse banks. Management of spills (spill response plan). Management of equipment - operate, maintain and store (e.g., refuel, lubricate) all equipment and materials in a manner that prevents entry of any deleterious substances to the watercourse. | No residual effects with implementation of mitigation measures. |
| Increase erosion potential | Prohibit/limit access to watercourse/watercourse banks. Design and implement erosion and sediment controls to contain/isolate the construction zone, manage site drainage/runoff and ensure all areas draining to Broadway Drain are stabilized following construction. Stabilize and revegetate all disturbed flood plain areas | No residual effects with implementation of mitigation measures. |