Changes

==Selection of suite of LIDs==

==Selection of suite of LIDs==

[[File:LIDTTT.png|thumb|LID Treatment Train Tool]]

[[File:LIDTTT.png|thumb|LID Treatment Train Tool]]

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 will be based on the size and type of development. A wide range of simple to complex computer models such as Visual OTTHYMO, SWMM, SWMMHYNO, HSP-F andQUALHYMO are available.

In order to assess if the selected suite of BMPs effectively meet the design criteria, use either computer models or simple spreadsheet models. Base Model selection on the size and type of development. A wide range of simple to complex computer models such as Visual OTTHYMO, SWMM, SWMMHYNO, HSP-F andQUALHYMO are available.

Recently, the Low Impact Development Treatment Train Tool (LID TTT) has been developed by Lake Simcoe Region Conservation Authority (LSRCA), Credit Valley Conservation (CVC) and Toronto and Region Conservation Authority (TRCA) as a tool to help developers, consultants, municipalities and landowners understand and implement more sustainable stormwater management planning and design practices in their watersheds. The purpose of the tool is to analyze annual and event based runoff volumes and pollutant load removal by the use of Best Management Practices (BMP)’s and Low Impact Development (LID) techniques.  

Recently, Lake Simcoe Region Conservation Authority (LSRCA), Credit Valley Conservation (CVC) and Toronto and Region Conservation Authority (TRCA) developed the [http://www.sustainabletechnologies.ca/wp/low-impact-development-treatment-train-tool/|Low Impact Development Treatment Train Tool to help developers, consultants, municipalities and landowners understand and implement sustainable stormwater management planning and design practices. The tool's purpose is to analyze annual and event-based runoff volumes and pollutant load removal by the use of LID best management practices. It provides preliminary water budget analysis, (i.e. surface ET, surface runoff, infiltration-to-soil and pollutant-load-removal estimates for pre- and post-development scenarios. Built using the the open source EPA SWMM5 model, the TTT provides a user-friendly interface for novice modellers and is cross-compatible with SWMM5 for advanced model development.  

 

The LID TTT provides preliminary water budget analysis (i.e. surface ET, surface runoff, infiltration to soil) and pollutant load removal estimates for pre- and post-development scenarios. The tool is built upon the open source EPA SWMM5 model providing a user-friendly interface for novice modelers and cross-compatibility with SWMM5 for further model development. To download the beta version, please check out the [http://www.sustainabletechnologies.ca/wp/low-impact-development-treatment-train-tool/ LID Treatment Train Tool]

==Assess effectiveness==

==Assess effectiveness==

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 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 adjusting the size of the features to see if criteria are met. Once met, the project can then proceed to the detailed design stage.

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 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 adjusting the size of the features to see if criteria are met. Once met, the project can proceed to the detailed design stage.