1. Stormwater Quality Enhancement
For
The City of Greencastle, Indiana

2. Objectives Improve urban stormwater quality
Educate and involve the public
Design of BMPs
Provide educational materials
Stormwater Quality Enhancement for the City of Greencastle, Indiana

3. Project Description LOCATION Greencastle, Indiana
Stormwater Quality Enhancement for the City of Greencastle, Indiana
LOCATION

4. Rokicki Park Existing Site
Stormwater Quality Enhancement for the City of Greencastle, Indiana

5. Big Walnut Sports Park Existing Site
Stormwater Quality Enhancement for the City of Greencastle, Indiana

6. ASSESSMENT OF DESIGN OPTIONS
Project Approach
SITE ASSESSMENT
PERMITTING
DESIGN OPTIONS
ASSESSMENT OF DESIGN OPTIONS
DESIGN OF BMP
COST ANALYSIS
Stormwater Quality Enhancement for the City of Greencastle, Indiana

7. Progress to Date Site Assessment Permits and Codes Hydrology
Soil Investigation
Plant Selection
Design Options
Assessment of Design Options
Stormwater Quality Enhancement for the City of Greencastle, Indiana

8. Progress to Date Site Assessment Survey Zoning Floodplain
Existing Wetlands
Stormwater Quality Enhancement for the City of Greencastle, Indiana

9. Floodplain Map Big Walnut Sports Park
Stormwater Quality Enhancement for the City of Greencastle, Indiana

10. Floodplain Map Rokicki Park
Stormwater Quality Enhancement for the City of Greencastle, Indiana

11. Wetlands Map Big Walnut Sports Park
Stormwater Quality Enhancement for the City of Greencastle, Indiana

12. Wetlands Map
Rokicki Park

13. Progress to Date Soil Investigation Sampling and testing
Match SCS data
Stormwater Quality Enhancement for the City of Greencastle, Indiana

14. Zinc Testing at Rokicki Park
Soil Investigation
Zinc Testing at Rokicki Park
Stormwater Quality Enhancement for the City of Greencastle, Indiana

15. Permits Construction in a Floodway – IDNR
Section 404 Clean Water Act Compliance – USACE
Local building permits – City of Greencastle
Stormwater Quality Enhancement for the City of Greencastle, Indiana

16. Progress to Date Plant Selection No invasive species
Use of endangered, native species
Maintenance plan
JFNew as a subcontractor
Stormwater Quality Enhancement for the City of Greencastle, Indiana

17. Progress to Date
Hydrology
Delineation of Drainage Area

18. Progress to Date Hydrology Delineation of Drainage Area
Rokicki Park 138 acres
Big Walnut Sports Park 31 acres
Average Monthly Precipitation from National Climatic Data Center
Volume of water entering on a monthly basis
Month
Ave. Rainfall (inches)
January
2.42
February
1.91
March
2.45
April
2.95
May
6.49
June
3.51
July
4.81
August
2.63
September
3.76
October
3.86
November
2.38
December
2.67

19. Progress to Date Design Options Wetland Rain Garden
Retention/Detention Pond
Stormwater Quality Enhancement for the City of Greencastle, Indiana

20. Decision Matrix for Rokicki Park
Progress to Date
Assessment of Design Options
Rokicki Park – Wetland
Decision Matrix for Rokicki Park
Construction Cost
(20%)
Maintenance Cost
(30%)
Educational
Value (30%)
Effectiveness
Total
Wetland 2 4 5
3.8
Rain Garden 3 1
3.2
Retention/ Detention
2.8
No Action
2.5
Stormwater Quality Enhancement for the City of Greencastle, Indiana

21. Decision Matrix for Big Walnut Sports Park
Progress to Date
Assessment of Design Options
Big Walnut Sports Park – Rain Garden
Decision Matrix for Big Walnut Sports Park
Construction Cost
(20%)
Maintenance Cost
(30%)
Educational
Value (30%)
Effectiveness
Total
Wetland 1 4 5
2.7
Rain Garden 2
3.7
Retention/ Detention 3
2.8
No Action
2.5
Stormwater Quality Enhancement for the City of Greencastle, Indiana

22. Assessment of Design Options
Summary of Progress
Site Assessment
Permits and Codes
Hydrology
Soil Investigation
Plant Selection
Design Options
Assessment of Design Options
Stormwater Quality Enhancement for the City of Greencastle, Indiana

23. Future Plans Complete Permits Design of BMP at Each Site
Site layout
Outlet structure
Cut and fill
Final plant selection
Boardwalk
Educational materials
Maintenance Plan
Cost Analysis
Stormwater Quality Enhancement for the City of Greencastle, Indiana

24. Schedule of Work
Stormwater Quality Enhancement for the City of Greencastle, Indiana

25. Thank You
Questions?
Stormwater Quality Enhancement for the City of Greencastle, Indiana