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LID opportunities in industrial, commercial and multi-residential types (view source)
Revision as of 18:39, 26 September 2017
, 6 years agono edit summary
The site types considered in this guide are grouped into six general categories based upon site similarities:
The site types considered in this guide are grouped into seven general categories based upon site similarities:
*High and mid-rise
*High and mid-rise
*Low rise
*Low rise
*Large commercial
*Large commercial
*Small commercial
*Small commercial
*Light industrial
*Institutional
*Institutional
permeable pavement installations. Bioretention areas may also be located in parking lot areas and are typically enclosed by curbing. Runoff from parking lots can also be directed to LID practices external to the parking lot areas such as perimeter bioswales or soakaways. Infiltration chambers can also be placed under parking lots to provide infiltration or required detention volumes for roof and/or parking areas. Utilities may be buried within parking lots. These are frequently electrical
permeable pavement installations. Bioretention areas may also be located in parking lot areas and are typically enclosed by curbing. Runoff from parking lots can also be directed to LID practices external to the parking lot areas such as perimeter bioswales or soakaways. Infiltration chambers can also be placed under parking lots to provide infiltration or required detention volumes for roof and/or parking areas. Utilities may be buried within parking lots. These are frequently electrical
lines for parking lot lighting. Locates are required before digging occurs.
lines for parking lot lighting. Locates are required before digging occurs.
==Light industrial sites==
Light industrial sites include light manufacturing, warehouse, warehouse-manufacturing multiuse, laboratories, as well as food production and processing facilities. Common landform features of light industrial sites include fewer than four storeys of building height, maintenance yards, shipping and receiving areas, fl at roofs with internal drainage, and vast but often underused parking lots.
Light industrial sites present unique challenges and opportunities. When evaluating the LID retrofit opportunities on a light industrial site, give preliminary consideration to pollution prevention, especially in and around shipping and receiving areas, and product or waste storage areas.
===Storage / shipping and receiving===
Light industrial lands often have storage and/or shipping and receiving areas located immediately adjacent to the building in the front or rear of the property. Due to the intensive use of these areas, they are significant contributors to pollutant loading.
Often, the simplest and most inexpensive way to reduce pollutant loading from these areas is implementing P2 practices. P2 includes non-structural solutions that reduce pollutant loading by changing site practices. For example, reducing the amount of de-icing salts used in the winter can
significantly improve runoff quality. Changing the location of product or waste storage from the perimeter of the site to a controlled catchment area or within the building can also improve runoff quality. Modifying loading and unloading practices by changing equipment or implementing weather
policies can also be extremely effective in reducing the stormwater impact of a site.
Structural P2 practices for these areas could include spill containment structures used to temporarily detain materials or liquids until collection and disposal can occur. Spill containment structures should be part of a site-specific spill response plan. These systems may include subsurface vaults or oversized pipes with shut off valves. Staff training is mandatory for operating these systems.
Outdoor material and waste storage areas can be upgraded with covered storage bins, shelters, or containers to prevent rain from coming into contact with materials that impact stormwater quality.
Establishing buffers around surface conveyance features can also provide significant improvements to runoff quality. These buffers may include physical barriers like bollards or curbs to prevent conveyance features from being used as storage areas.
===Staff parking areas and rooftops===
These areas represent the best opportunity for establishing LID practices on light industrial sites. Runoff from these catchment areas can be treated with the same suite of LID options for commercial lands.