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Line 64: |
| treatment train approach and application of low impact development practices are all | | treatment train approach and application of low impact development practices are all |
| becoming common practice in these jurisdictions. | | becoming common practice in these jurisdictions. |
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| Two recent documents, one prepared by the City of Toronto and the other prepared by | | Two recent documents, one prepared by the City of Toronto and the other prepared by |
| the Greater Vancouver Regional District summarize how the approach to stormwater | | the Greater Vancouver Regional District summarize how the approach to stormwater |
| management needs to change. | | management needs to change. |
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| Rainwater should be treated as a resource to nourish and enhance the | | Rainwater should be treated as a resource to nourish and enhance the |
| City’s environment. Management should begin where precipitation hits | | City’s environment. Management should begin where precipitation hits |
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| * how to integrate stormwater management into the urban planning process; | | * how to integrate stormwater management into the urban planning process; |
| * how to design, construct and maintain a range of LID stormwater management | | * how to design, construct and maintain a range of LID stormwater management practices; and |
| practices; and | | * the kinds of environmental and performance monitoring that should be carried out. |
| * the kinds of environmental and performance monitoring that should be carried | |
| out. | |
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| Acknowledging that it will not always be possible to maintain the predevelopment water | | Acknowledging that it will not always be possible to maintain the predevelopment water |
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| practices can include: | | practices can include: |
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| * conservation site design strategies (i.e., non-structural LID practices);
| | * conservation site design strategies (i.e., non-structural LID practices); |
| * infiltration practices;
| | * infiltration practices; |
| * rainwater harvesting;
| | * rainwater harvesting; |
| * runoff storage and evapotranspiration;
| | * runoff storage and evapotranspiration; |
| * runoff conveyance;
| | * runoff conveyance; |
| * filtration practices; and landscaping.
| | * filtration practices; and landscaping. |
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| Studies show that implementing LID practices can have multiple positive environmental effects including: | | Studies show that implementing LID practices can have multiple positive environmental effects including: |
| * protection of downstream resources;
| | * protection of downstream resources; |
| * abatement of pollution;
| | * abatement of pollution; |
| * recharge of groundwater;
| | * recharge of groundwater; |
| * improvement of water quality;
| | * improvement of water quality; |
| * improvement of habitat;
| | * improvement of habitat; |
| * reduced downstream flooding and erosion;
| | * reduced downstream flooding and erosion; |
| * conservation of water and energy; and
| | * conservation of water and energy; and |
| * improved aesthetics in streams and rivers.
| | * improved aesthetics in streams and rivers. |
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| These combined benefits help to mitigate potential negative impacts of climate change | | These combined benefits help to mitigate potential negative impacts of climate change |
| on groundwater levels, risk of flooding and stream channel erosion. | | on groundwater levels, risk of flooding and stream channel erosion. |