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→Planning Considerations:
- apply sedimentation pretreatment practices (e.g., oil and grit separators) before infiltration of road or parking area runoff.
- apply sedimentation pretreatment practices (e.g., oil and grit separators) before infiltration of road or parking area runoff.
*Risk of Soil Contamination: Available evidence from monitoring studies indicates that small distributed stormwater infiltration practices do not contaminate underlying soils, even after more than 10 years of operation (TRCA, 2008).