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Stormwater Quality Enhancement
For
The City of Greencastle, Indiana
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
Project Description
Greencastle, Indiana
LOCATION
Stormwater Quality Enhancement for the City of Greencastle, Indiana
Rokicki Park
Existing Site
Stormwater Quality Enhancement for the City of Greencastle, Indiana
Big Walnut Sports Park
Existing Site
Stormwater Quality Enhancement for the City of Greencastle, Indiana
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
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
Progress to Date
Site Assessment Survey
Zoning
Floodplain
Existing Wetlands
Stormwater Quality Enhancement for the City of Greencastle, Indiana
Floodplain Map
Stormwater Quality Enhancement for the City of Greencastle, Indiana
Big Walnut Sports Park
Floodplain Map
Stormwater Quality Enhancement for the City of Greencastle, Indiana
Rokicki Park
Wetlands Map
Stormwater Quality Enhancement for the City of Greencastle, Indiana
Big Walnut Sports Park
Wetlands Map
Rokicki Park
Progress to Date
Soil Investigation Sampling and testing
Match SCS data
Stormwater Quality Enhancement for the City of Greencastle, Indiana
Soil Investigation Zinc Testing at Rokicki Park
Stormwater Quality Enhancement for the City of Greencastle, Indiana
Permits
Stormwater Quality Enhancement for the City of Greencastle, Indiana
Construction in a Floodway – IDNR
Section 404 Clean Water Act Compliance – USACE
Local building permits – City of Greencastle
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
Progress to Date Hydrology
Delineation of Drainage Area
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
Progress to Date
Design Options Wetland
Rain Garden
Retention/Detention Pond
Stormwater Quality Enhancement for the City of Greencastle, Indiana
Progress to Date
Assessment of Design Options Rokicki Park – Wetland
Stormwater Quality Enhancement for the City of Greencastle, Indiana
Decision Matrix for Rokicki Park
Construction Cost
(20%)
Maintenance Cost
(30%)
EducationalValue (30%)
Effectiveness(20%)
Total
Wetland 2 4 4 5 3.8
Rain Garden 3 1 5 4 3.2
Retention/ Detention
2 4 2 3 2.8
No Action 5 5 0 0 2.5
Progress to Date
Assessment of Design Options Big Walnut Sports Park – Rain Garden
Stormwater Quality Enhancement for the City of Greencastle, Indiana
Decision Matrix for Big Walnut Sports Park
Construction Cost
(20%)
Maintenance Cost
(30%)
EducationalValue (30%)
Effectiveness(20%)
Total
Wetland 1 1 4 5 2.7
Rain Garden 4 2 5 4 3.7
Retention/ Detention
2 4 2 3 2.8
No Action 5 5 0 0 2.5
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
Future Plans
Stormwater Quality Enhancement for the City of Greencastle, Indiana
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
Schedule of Work
Stormwater Quality Enhancement for the City of Greencastle, Indiana
Thank You
Questions?
Stormwater Quality Enhancement for the City of Greencastle, Indiana
