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 bagsand 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 thewatercourse.	Prohibit/limit access to watercourse/watercourse banks.Management of spills (spill response plan).	No residual effects with implementation of mitigation measures.
		Management of equipment - operate, maintain and store (e.g., refuel, lubricate) all equipment and materials in a manner that prevents entry ofany deleterious substances to the watercourse.
	Increase erosion potential	Prohibit/limit access to watercourse/watercourse banks.	No residual effects with implementation of mitigationmeasures.
		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