Title: STORM WATER MANAGEMENT AND BEST MANAGEMENT PRACTICES
1STORM WATER MANAGEMENT AND BEST MANAGEMENT
PRACTICES
- Howard E. Sloan, CFM
- Assistant Village Administrator
- Village of Frankfort
- 432 West Nebraska St.
- Frankfort, Illinois 60423
- www.villageoffrankfort.com
2Location Map
3In the Beginning
- Pre-1960s Storm Water Management consisted of
dams and levees - USEPA drafts first storm water model in 1969
- 1973 Clean Water Act passes Congress
- 1990 EPA promulgates NPDES storm water program
- 2000 National menu for storm water BMPs released
4National Menu of Storm Water Best Management
Practices
- Public Education BMP for MS4s to inform
individuals and households - Public Involvement Involve public in BMPs
- Illicit Discharge Detection Elimination BMP
to identify and eliminate discharge and spills to
storm system - Construction BMPs for construction sites to
address storm water runoff - Post-construction BMPs for developers and
property owners to address storm water runoff - Pollution Prevention/Good Housekeeping MS4s to
address BMPs for own facilities
5Frankforts Storm Water History
- June 24, 1994 216 drainage complaints
- December 1994 first comprehensive storm water
ordinance - March 5, 1997 Storm Water Management Plan
- 2000 Water Resource Management Plan
6Water Resource Management Plan
- Holistic (BMP) Approach to Storm Water Runoff
- Identification of Receiving Areas
- Streams and Creeks
- Major Drainage Ditches
- Wetlands
- Special Flood Hazard Areas
- Storm Water Management Facilities
- Watershed Management
- Environmental and Ecological Function
- Hydrologic and Hydraulic Function
- Preservation of Natural Landscape
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8Purpose of Plan
- Recognition of Importance of Natural and Native
Areas - Environmental Assessment of Property
- Incorporation of Environmentally Sensitive Areas
in Land Use Plan - Allow Development with No Adverse Impact
- Assure Proper Maintenance of Areas
- Identification of Village Ordinances and
Regulations
9Storm Water Management in Frankfort
- Required by all development, regardless of size
- Strict design requirements
- Each project must incorporate conservation design
elements BMP - All work outside of SFHA
- Maintain existing wetlands and depression areas
- Provide groundwater recharge elements
- Dedicate management area as open space
10USEPA 3-Key BMP Performance Indicators
- Reduce Concentration of Pollutants Leaving BMP
(mg/l) - Reduction in Storm Water Volume
- Total Load Removal
11USEPA Fact SheetOnStorm Water
ManagementProperly installed and maintained
retention structures (also known as wet ponds)
and artificial wetlands can achieve a high
removal rate of sediment, biochemical oxygen
demand (BOD), organic nutrientsand are most cost
effective when used to control runoff
12Wet Basin Design is Preferred
- Reduction of Pollutants/Contaminants
- Improves Water Quality
- Retention, extended detention, infiltration and
evapotranspiration - Aesthetics
- Creates Recreational Use Passive Active
13Center for Watershed Protectionwww.cwp.orgEffect
iveness of Wet Basin inReducing
Pollutants/Nutrients
- Total Suspended Solids (TSS) 50 to
91Total Phosphorus (TP) 30 to
76Total Nitrogen (TN) 19 to
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14Wet Basin Design BMP Elements
- Depth below NWL i.e. wet bottom vs. wetland
- Shoreline slopes
- Basin bounce NWL vs. HWL (5 max)
- Draw down times 72 hours max. (10-year event),
USEPA 12-48 hours - Inlet and outlet orientation maximize separation
15Wet Basin Design BMP Elements (Continued)
- Energy Dissipation at basin inlets outlets
- Safety ledge for wet bottom 10 average width
- Permanent pool volume equal to 2-year event from
watershed - Stilling/Sediment basins min. 500 cf/ac of
impervious surface for drainage area - Vegetated buffer strip
- Wet basin design by qualified designer/ecologist
16Naturalized Landscaping BMP
- Definition Ecologically sensitive landscaping
that uses regional native plant species to
create, improve or restore specialized and
self-sustaining plant communities for identified
areas i.e. wet basins, wetlands, prairie,
woodland, etc.
17Naturalized Landscaping BMP
- Landscape plan required for all new storm water
management areas - Landscape plan and plant selection must consider
hydrograph for basin - Short term (3-5 years) and Long term (5 years)
maintenance included in plan - Letter-of-Credit (115 of value) required
- Monitoring Reports required near term annually
and long term every 5-years - Prohibit activity in naturalized area dumping,
alterations, structures, chemical applications
(other than for maintenance)
18Old Days of Storm Water Management
19New Day has DawnedWet Basin Storm Water
Management Facilities
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29Shoreline Issues
30Old Solution
31BMP Solution
32Inlet Outlet Issues
33There are Alternatives
34And these
35I like this approach!
36Energy Dissipation
37Maximize Separation
38Siltation SedimentationIts a Problem
39Here are BMP Solutions
40Buffer Protection
41Buffer Suggestions
42Summary
- Storm Water Ordinance include BMP
- Holistic Approach Evaluate watershed
- No Adverse Impact by development
- Storm Water Management BMP require a plan
- Wet Basin Preferred
- Incorporate naturalized/native plant material
- Enforcement
43Conclusion
- Village of Frankfort
- Water Resource Management Plan
- Engineering Design Standards
- Landscape Ordinance
- Flood Regulation
- www.villageoffrankfort.com
- - Document Library
- - Browse
- - Map/Ordinance