Stormwater Source Control Design Guidelines 2005 - Waterbucket

Introduction Stormwater Source Control Design Guidelines 2005The Source ControlsIn 2003, a team of consulting engineers and landscapearchitects was commissioned by the GVSDD to createtechnical design guidelines for a selection of these BestManagement Practices that related to stormwater sourcecontrol. The team compiled technical literature from regionsof the world that have climates similar to Vancouver on thefollowing source control topics: Absorbent landscapes, including native soils and woods,compost-amended soils, planters and other treatments toreduce runoff from landscape areas; Bioretention facilities, which can include rain gardens,sunken landscape areas, and infiltration areas, with orwithout an underdrain; Vegetated swales, including bioswales and associatedvegetated filter strips; Pervious paving, including both vegetated andunvegetated types; Infiltration trenches, sumps and drywells, including variousunderground infiltration devices; and Extensive green roofs.The InformationOf particular interest were technical standards or designguidelines that are supported by government agencies orindustry associations. The research aimed to acquire atechnical level of detail appropriate to a ‘typical designstandard’ that is suitable for testing, and which can beadapted to a given site or context by design professionals –specifically: Source control application, performance, scale, sitesuitabilityand limitations; Generalized material specifications; Consideration of material availability, complexity andcosts of construction and maintenance of the technique; Typical construction drawings as appropriate; Candidate plant species, maintenance requirements andrelated aspects; and Any relevant guidelines, standards, drawings or images ofthe specified source control.4Greater Vancouver Sewerage & Drainage District