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Category: Design Specifications

Category: Design Specifications

Home Publications Archive for category "Design Specifications"

Design Specification No 15: Extended Detention Pond

Design Specification No 15: Extended Detention Pond
admin Design Specifications March 17, 2012 June 12, 2014 Leave a comment

An extended Detention pond relies on 12 to 24 hour detention of stormwater runoff after each rain event; an under-sized outlet structure restricts stormwater flow so it backs up and is stored within the basin.

Read more"Design Specification No 15: Extended Detention Pond"

Design Specification No 14: Wet Pond

Design Specification No 14: Wet Pond
admin Design Specifications March 17, 2012 June 12, 2014 Leave a comment

Wet ponds consist of a permanent pool of standing water that promotes a better environment for gravitational settling, biological uptake and microbial activity.

Read more"Design Specification No 14: Wet Pond"

Design Specification No 13: Constructed Wetlands

Design Specification No 13: Constructed Wetlands
admin Design Specifications March 17, 2012 June 12, 2014 Leave a comment

Constructed wetlands are shallow depressions that receive stormwater inputs for water quality treatment, are typically less than 1 foot deep, and possess variable microtopography to promote dense and diverse wetland cover.

Read more"Design Specification No 13: Constructed Wetlands"

Design Specification No 12: Filtering Practices

Design Specification No 12: Filtering Practices
admin Design Specifications March 17, 2012 June 12, 2014 Leave a comment

Stormwater filters depend mainly on physical treatment mechanisms to remove pollutants from stormwater runoff, including gravitational settling in the sedimentation chamber, straining at the top of the filter bed, and filtration and adsorption onto the filter media.

Read more"Design Specification No 12: Filtering Practices"

Design Specification No 11: Wet Swale

Design Specification No 11: Wet Swale
admin Design Specifications March 17, 2012 March 14, 2016 Leave a comment

Wet swales can provide runoff filtering and treatment within the conveyance system and are a cross between a wetland and a swale.

Read more"Design Specification No 11: Wet Swale"

Design Specification No 10: Dry Swales

Design Specification No 10: Dry Swales
admin Design Specifications March 17, 2012 June 12, 2014 Leave a comment

Dry swales are essentially bioretention cells that are shallower, configured as linear channels, and covered with turf or other surface material (other than mulch and ornamental plants).

Read more"Design Specification No 10: Dry Swales"

Design Specification No 9: Bioretention

Design Specification No 9: Bioretention
admin Design Specifications March 16, 2012 February 1, 2017 Leave a comment

Bioretention creates a good environment for runoff reduction, filtration, biological uptake, and microbial activity, and provides high pollutant removal; bioretention can become an attractive landscaping feature with high amenity value and community acceptance.

Read more"Design Specification No 9: Bioretention"

Design Specification No 8: Infiltration Practice

Design Specification No 8: Infiltration Practice
admin Design Specifications March 16, 2012 June 13, 2014 Leave a comment

Infiltration practices use temporary surface or underground storage to allow incoming stormwater runoff to exfiltrate into underlying soils, allowing for a very high runoff volume reduction capability.

Read more"Design Specification No 8: Infiltration Practice"

Design Specification No 7: Permeable Pavement

Design Specification No 7: Permeable Pavement
admin Design Specifications March 16, 2012 June 13, 2014 Leave a comment

Permeable pavement is typically designed to treat stormwater that falls on the actual pavement surface area, but it may also be used to accept run-on from small adjacent impervious areas, such as impermeable driving lanes or rooftops.

Read more"Design Specification No 7: Permeable Pavement"

Design Specification No 6: Rainwater Harvesting

Design Specification No 6: Rainwater Harvesting
admin Design Specifications March 16, 2012 March 18, 2016 Leave a comment

Rainwater that falls on a rooftop is collected and conveyed into an above- or below-ground storage tank where it can be used for non-potable water uses and on-site stormwater disposal/infiltration.

Read more"Design Specification No 6: Rainwater Harvesting"

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