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| == Screen Potential LID Options == | | == Screen Potential LID Options == |
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| A number of factors need to be considered when screening the suitability of a given location within a development site for application of stormwater BMPs. Table 3.4.1 | | A number of factors need to be considered when screening the suitability of a given location within a development site for application of stormwater BMPs. [[LID Site Criteria and Constraints]] |
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| summarizes site constraints associated with some general types of structural LID practices for stormwater management that should be considered. Further | | summarizes site constraints associated with some general types of structural LID practices for stormwater management that should be considered. Further |
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| information regarding constraints to the design of various end-of-pipe BMPs can be found in the Ontario Ministry of the Environment Stormwater Management Planning and | | information regarding constraints to the design of various end-of-pipe BMPs can be found in the Ontario Ministry of the Environment Stormwater Management Planning and |
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| Design Manual (2003). The use of LID BMPs should be considered first to meet the design criteria before the use of end-of-pipe BMPs. | | Design Manual (2003). The use of LID BMPs should be considered first to meet the design criteria before the use of end-of-pipe BMPs. Other considerations for screening potential LID options is detailed below. |
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| === Structural Requirements or Site Constraints ===
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| [[LID Site Criteria and Constraints]]
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| === Performance Requirements === | | === Performance Requirements === |
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| For additional resources on LID performance studies, please click on [http://www.sustainabletechnologies.ca/wp/home/urban-runoff-green-infrastructure/low-impact-development/ LID Performance Reports]
| | Resources on LID performance studies are widely available. Performance of LID within Ontario can be found in |
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| | [http://www.sustainabletechnologies.ca/wp/home/urban-runoff-green-infrastructure/low-impact-development/ LID Performance Reports] |
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| === Operations and Maintenance Requirements === | | === Operations and Maintenance Requirements === |
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| [http://www.sustainabletechnologies.ca/wp/home/urban-runoff-green-infrastructure/low-impact-development/low-impact-development-life-cycle-costs/ LID Life Cycle Costing Tool] | | [http://www.sustainabletechnologies.ca/wp/home/urban-runoff-green-infrastructure/low-impact-development/low-impact-development-life-cycle-costs/ LID Life Cycle Costing Tool] |
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| == Select LIDs (Conceptual Design) == | | == Selection of Suite of LIDs == |
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| In order to assess if the selected suite of BMPs effectively meet the design criteria either computer models or simple spreadsheet models should be used. Model selection | | In order to assess if the selected suite of BMPs effectively meet the design criteria either computer models or simple spreadsheet models should be used. Model selection |
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| Once the suite of best management practices have been selected and the models have been run, a comparison of the results and the environmental design criteria can be made. An iterative approach, which involves adjusting the | | Once the suite of best management practices have been selected and the models have been run, a comparison of the results and the environmental design criteria can be made. An iterative approach, which involves adjusting the |
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| size or adding/deleting BMPs should be used until the environmental design criteria are met. The project can then proceed to the detailed design stage. | | size or adding/deleting BMPs should be used until the environmental design criteria are met. The [http://www.sustainabletechnologies.ca/wp/low-impact-development-treatment-train-tool/ LID Treatment Train Tool] can help with |
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| | adjusting the size of the features to see if criteria are met. Once met, the project can then proceed to the detailed design stage. |