Stormwater Source Controls Design Guidelines 2005 – Final Report

In British Columbia, the technical language is being simplified so that there will be a clearer public and practitioner understanding of the suite of source control options for capturing rain where it falls. To complement the Water Balance Model for Brtish Columbia, the Stormwater Inter-Agency Group (SILG) – a technical committee of the Greater Vancouver Regional District (GVRD) – commissioned a research project to create Stormwater Source Controls Design Guidelines 2005. This work is based on the adaptation of design standards from areas of Europe, Australia, New Zealand and North America with similar climatic and soil conditions. “The objective of this project was to reduce information barriers that previously stood in the way of effective implementation of rainwater source controls in the Georgia Basin region of British Columbia. Our focus was on the technical details of practices in landscape areas that treat rainwater through plant materials and soils by infiltration, retention, detention and evapotranspiration', according to Ed von Euw, Senior Engineer with GVRD Regional Utility Planning. The Final Report is organized as a set of Design Guidelines corresponding to each of the six priority source control topics. The Design Guidelines include typical details, generalized specifications, and guidelines for use. Key features of the research information have been displayed in a set of poster presentations that can be downloaded. The Design Guidelines are not intended to be used as detail designs. Proper site investigations and site-specific designs by appropriate professionals that comply with applicable laws, bylaws or regulations are required. The Design Guidelines can provide guidance and inspiration on innovative means of achieving rainwater management objectives. The Water Balance Model uses the same source control classifications and language as on the Posters and in the Design Guidelines. “SILG has provided financial support for development of the Water Balance Model because it is a tool that will enable Greater Vancouver municipalities to fulfil their commitments to integrated stormwater management planning under the regional Liquid Waste Management Plan,” added von Euw, “This is the driver for applying the water balance approach.” The combination of the Water Balance Model and the Design Guidelines enable engineers, planners, landscape architects, architects, developers and builders to select, assess and implement landscape-based solutions that make sense.

Author Lanarc Consultants Ltd

Publisher Greater Vancouver Regional Disrict