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→Example 1: Honda Canada Head Office
===Example 1: [https://sustainabletechnologies.ca/app/uploads/2015/07/Honda_TechBrief_July2015.pdf Honda Canada Head Office]===
===Example 1: [https://sustainabletechnologies.ca/app/uploads/2015/07/Honda_TechBrief_July2015.pdf Honda Canada Head Office]===
[[File:Screenshot 2025-09-24 121112.png|400px|thumb|right|Locations of LID features within the Honda Canada Head Office study site in Markham, Ontario. Water levels were monitored at the standpipe locations and flow rates were measured at the outlets to the northeast (NE), southeast (SE) and west (W) catchments (STEP, 2015) <ref name=HONDA>STEP. 2015. Hydrologic Assessment of LID Honda Campus, Markham, ON. https://sustainabletechnologies.ca/app/uploads/2015/07/Honda_TechBrief_July2015.pdf</ref>.]]
[[File:Screenshot 2025-09-24 121112.png|400px|thumb|right|Locations of LID features within the Honda Canada Head Office study site in Markham, Ontario. Water levels were monitored at the standpipe locations and flow rates were measured at the outlets to the northeast (NE), southeast (SE) and west (W) catchments (STEP, 2015) <ref name=HONDA>STEP. 2015. Hydrologic Assessment of LID Honda Campus, Markham, ON. https://sustainabletechnologies.ca/app/uploads/2015/07/Honda_TechBrief_July2015.pdf</ref>.]]
[[File:Screenshot 2025-09-24 121338.png|400px|thumb|right|From left to right: Drainage swale and fitness path, biofilter stone trench, permeable surfaces in outdoor eating areas, rainwater cistern, native plantings, and vegetated biofilter (STEP, 2015) <ref name=HONDA></ref>.]]
[[File:Screenshot 2025-09-24 121338.png|400px|thumb|right|From left to right: Drainage [[Swales|swale]] and fitness path, biofilter stone trench, [[permeable pavements|permeable surfaces]] in outdoor eating areas, rainwater cistern, native plantings, and [[Vegetated filter strips|vegetated biofilter]] (STEP, 2015) <ref name=HONDA></ref>.]]
The headquarters of Honda Canada is located at 180 Honda Boulevard in Markham, Ontario. The 17.9 ha catchment is divided up into three subcatchments with separate outlets: west (6.3 ha, 53% impervious), Northeast (5.4 ha, 55% impervious), Southeast (6.4 ha, 83% impervious). Overall site imperviousness is 64%. LID practices replaced the need for a [[wet ponds|stormwater pond]], allowing the facility to maintain a large sports field in the northeast portion of the site.
The headquarters of Honda Canada is located at 180 Honda Boulevard in Markham, Ontario. The 17.9 ha catchment is divided up into three subcatchments with separate outlets: west (6.3 ha, 53% impervious), Northeast (5.4 ha, 55% impervious), Southeast (6.4 ha, 83% impervious). Overall site imperviousness is 64%. LID practices replaced the need for a [[wet ponds|stormwater pond]], allowing the facility to maintain a large sports field in the northeast portion of the site.
'''Stormwater Management Strategy'''
'''Stormwater Management Strategy'''
#The primary practices to achieve on-site runoff retention and peak flow attenuation include a series of large gravel trenches with underdrains (mostly in the SE catchment), a 636 m3 cistern draining water from a 2.4 hectare roof, a small dry pond, permeable pavers and surface swales.
#The primary practices to achieve on-site runoff retention and peak flow attenuation include a series of large gravel trenches with underdrains (mostly in the SE catchment), a 636 m3 cistern draining water from a 2.4 hectare roof, a small [[dry pond]], [[permeable pavements|permeable pavers]] and surface [[swales]].
#Underdrain in the trenches is raised 0.15 m off the native soil to provide quality and water balance control through infiltration. Trees and vegetation on top of the gravel filled trenches help reduce runoff through evapotranspiration.
#Underdrain in the trenches is raised 0.15 m off the native soil to provide quality and water balance control through [[infiltration]]. [[Trees]] and vegetation on top of the gravel filled trenches help reduce runoff through evapotranspiration.
#Underdrain is undersized to increase detention times during flood events. [[Orifice]] controls are installed in the downstream sewer to control release rates.
#Underdrain is undersized to increase detention times during flood events. [[Orifice]] controls are installed in the downstream sewer to control release rates.
#An automated irrigation system for the playing field and vegetated areas draws stored water from the rainwater cistern to increase capacity during storm events. Outside of the growing season, rainwater from the cistern drains directly to a [[dry pond]] which provides temporary storage and release.
#An automated irrigation system for the playing field and vegetated areas draws stored water from the rainwater cistern to increase capacity during storm events. Outside of the growing season, rainwater from the cistern drains directly to a [[dry pond]] which provides temporary storage and release.