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→Planning considerations
<h3>Landscaping</h3>
<h3>Landscaping</h3>
Landscaped areas must drain away from permeable pavement to prevent sediments from running onto the surface. Urban [[trees]] will benefit from being surrounded by permeable pavement rather than impervious cover, because their roots receive more air and water. Interlocking pavers used around the base of a tree may be removed as the tree grows.
Landscaped areas must drain away from permeable pavement to prevent sediments from running onto the surface. Urban [[trees]] will benefit from being surrounded by permeable pavement rather than impervious cover, because their roots receive more air and water. Interlocking pavers used around the base of a tree may be removed as the tree grows.
<h3>Risk of Groundwater Contamination</h3>
*Stormwater infiltration practices should not receive runoff from high traffic areas where large amounts of de-icing salts are applied (e.g., busy highways), nor from pollution hot spots (e.g., source areas where land uses or activities have the potential to generate highly contaminated runoff such as vehicle fuelling, servicing or demolition areas, outdoor storage or handling areas for hazardous materials and some heavy industry sites);
*Prioritize infiltration of runoff from source areas that are comparatively less contaminated such as roofs, low traffic roads and parking areas; and,
*Apply sedimentation pretreatment practices (e.g., oil and grit separators) before infiltration of road or parking area runoff.
<h3>Heavy Vehicle Traffic</h3>
Permeable pavement is not typically used in locations subject to heavy loads. Some permeable pavers are designed for heavy loads and have been used in commercial port loading and storage areas.
==Design==
==Design==