LID Treatment Train Tool Overview

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1 LID Treatment Train Tool Overview LSRCA Board of Directors July 28, 2017 Steve Auger Manager, Urban Restoration Member of Conservation Ontario

2 Direction Going forward, the Ministry expects that stormwater management plans will employ LID in order to maintain the natural hydrologic cycle to the greatest extent possible. - Interpretation Bulletin from MOECC February

3 Identified Objectives for LID model for Ontario Tailored to Ontario climate and geologic conditions Hydraulic routing to better predict flow volumes and rates Capable of estimating pre and post water budget Accommodate higher number of BMPs, LIDs, treatment trains, and/or end-of-pipe facilities User friendly GUI, Open-Source Generate results in accordance with local targets and criteria (i.e., volume reduction, TSS & TP water quality reduction, and water budget estimates). 3

4 Lake Simcoe Phosphorus Offsetting Program Sheppards Bush Conservation Area - Aurora 4

5 LID Treatment Train Tool for Ontario Purpose: A conceptual design tool to help developers, consultants, municipalities and landowners implement better site design storm water management practices. 5

6 LID Treatment Train Tool Input Architecture.INP File User Tool (.JSON) EPA SWMM5 Runoff Volume Control, Water Budget; TSS & TP % Removal; & Peak Flows.RPT File Sheppards Bush Conservation Area - Aurora 6

7 Case Studies Application to Test LID TTT Mosaik Glenway Subdivision Newmarket, Ontario Honda Canada Campus Markham, Ontario 7

8 Pre-development 8

9 Pre-development 9

10 Post-development 10

11 Post-development 11

12 Post-development: LID treatment train 12

13 Stormwater Management Design Criteria Addressed via LID TTT 1. Proposed: Stormwater volume reduction target 2. Water quantity/ flood control (peak flow control) 3. Water balance 4. Water quality (Total Suspended Solids/Total Phosphorus removal) 13

14 1.0 PROPOSED: Stormwater volume reduction target MOECC Criterion Design criteria for Mosaik Glenway Estates Criteria met per LID TTT? (Y/N) Proposed: stormwater volume reduction target Retain 25 mm event on site 14

15 1.0 PROPOSED: Stormwater volume reduction target This example results demonstrates the Runoff Volume Control target (depth) of 25 mm is not met. Designer should therefore modify site plan / LID treatment train design until 25 mm target is met. 15

16 4.0 Water Quality MOECC Criterion Water quality Design criteria for Mosaik Glenway Estates Enhanced level of treatment TSS - Minimum: 80% TP Minimum: 80% Criteria met per LID TTT? (Y/N) 16

17 4.0 Water Quality - TP This example results demonstrates a Total Phosphorus reduction from approximately 8.75 kg / yr to 2.03kg/yr. Designer to enhance the LID features or provide funds to the offset the 2.03 kg leaving the site. 17

Training Workshops: Lake Simcoe Watershed -

Sept 2017 Credit Valley Watershed Oct or Nov

0 Development Costing Consideration for more

18 Next Steps Planned Version 1.0 Scheduled for completion at end of April Training Workshops: Lake Simcoe Watershed - June 27, 2017 Toronto and Region Watershed - Sept 2017 Credit Valley Watershed Oct or Nov 2017 Technical Support Version 2.0 Development Costing Consideration for more water quality parameter computations (results). Sheppards Bush Conservation Area - Aurora 18

19 Questions / Comments? Thank you Sheppards Bush Conservation Area - Aurora 19

Development of an LID and Urban Water Balance Modeling Tool

March 30, 2017 1 Partial Funding Provided by Province of Ontario TRIECA Conference ( Thursday March 23, 2017 1:30 2 pm) Development of an LID and Urban Water Balance Modeling Tool Presenters: Steve Auger,