1. BIORETENTION IN RIVERWOODS An RPC Project Proposal November 16, 2010

2. 2 BIORETENTION BIOSWALES RAIN GARDENS ETC…….

3. 3 Bioretention Treatment of stormwater –Ground depression –Conditioned soil bed –Plant Materials Objectives –Stormwater runoff management –Hydrology restoration –Pollutant reduction –Aesthetic variation and native plant restoration

4. 4 Design Considerations Drawdown within 24-48 hours 1-3 ft above Groundwater Underlying Infiltration Rates Soil Augmentation Underdrain Pollutant Hotspots (Source: Baxter Woodman)

5. 5 RPC Role Act as a focal point and champion bioretention within the Village Build upon the Village’s initial rain garden efforts If proven appropriate, help define and support… –a Village policy and support program –property owner education

6. 6 Bioretention Project - Phase 1 Demonstration cells (4) Permissions and cooperation Requirements and costs Measurements Grant availability, corporate support? Implementation plan

7. 7 Bioretention Project - Phase 2 Obtain volunteer and financial assistance Develop the four sites Conduct the evaluation Propose policies and programs

8. 8 Current Requests Continue to endorse bioretention Confirm the RPC role Acknowledge the project plan Cooperation: –Easements –Resident communication –Etc. Volunteer!