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Line 1: − [[File:Screenshot 2025-07-11 113242.png|500px|thumb|right|This cross-section of a road from the Markham Municipal Green Road Pilot Project shows a primary inlet connected to a catchbasin sump with a hickenbottom-style riser, promoting sedimentation before water reaches the infiltration gallery. Sediment should be removed from the catchbasin regularly. Image adapted from Schollen & Company Inc (STEP, 2018). <ref>Sustainable Technologies Evaluation Program. 2018. The Markham Municipal Green Road Pilot Project. https://sustainabletechnologies.ca/app/uploads/2018/12/Markham-Green-Road-Case-Study_FINAL.pdf</ref>]]+ + + + + + + + + + + +
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[[File:Screenshot 2025-07-09 145748.png|500px|thumb|right|Sedimentation is the process where particles suspended in a fluid settle to the bottom due to gravity.]]
[[File:Screenshot 2025-07-09 145748.png|500px|thumb|right|Sedimentation is the process where particles suspended in a fluid settle to the bottom due to gravity.]]
== Overview ==
== Overview ==
<imagemap>
File:Screenshot 2025-07-11 113242.png|thumb|500px|This cross-section of a road from the Markham Municipal Green Road Pilot Project shows a primary inlet connected to a catchbasin sump with a hickenbottom-style riser, promoting sedimentation before water reaches the infiltration gallery. Sediment should be removed from the catchbasin regularly. Image adapted from Schollen & Company Inc (STEP, 2018). <ref>Sustainable Technologies Evaluation Program. 2018. The Markham Municipal Green Road Pilot Project. https://sustainabletechnologies.ca/app/uploads/2018/12/Markham-Green-Road-Case-Study_FINAL.pdf</ref>. <span style="color:red">''Explore this image map with your cursor and click on highlighted labels to learn more on the Wiki.''</span>
rect 48 212 323 296 [[Overflow]]
rect 778 436 1143 544 [[Infiltration trenches|Infiltration]]
rect 367 523 699 641 [[Inlet sumps: Gallery|Inlet sump]]
rect 388 261 557 439 [[Pretreatment]]
rect 493 7 820 166 [[Inlets|Inlet]]
rect 208 704 775 845 [[Aggregates|Granular bedding]]
</imagemap>
Sedimentation is a fundamental process used in stormwater treatment to remove suspended solids from runoff. It relies on gravity to deposit suspended sediment and debris into a designated settling area for later removal. Many pollutants that adhere to solids, such as metals, phosphorus, and hydrocarbons, are also removed through this process.
Sedimentation is a fundamental process used in stormwater treatment to remove suspended solids from runoff. It relies on gravity to deposit suspended sediment and debris into a designated settling area for later removal. Many pollutants that adhere to solids, such as metals, phosphorus, and hydrocarbons, are also removed through this process.