GO GREEN!

JULIA MILLER, WATER RESOURCE DIVISION

MILLERJ2@MICHIGAN.GOV

989-295-3913

INFRASTRUCTURE

OR

MS 4 Small Communities

Presentation Outline1. Municipal Stormwater Regulatory

Framework

2. Benefits of Stormwater Management for Small Communities (Grey & Green)

3. Cass River Small Community MS4 planning example

4. Guidance Documents

MS4 Framework1. Illicit Discharge Elimination Program (IDEP)

2. Post Construction Controls (PCC)

3. Public Education Plan (PEP)

Identifying Sources of Stormwater Pollution1. Get to know your system Identify outfalls Identify catch basins Map system, if possible televising system Identify Green Infrastructure opportunities

2. Dry weather screening

3. Recognize illicit discharges and illegal dumping

Managerial Stormwater Controls1. Adopt a LID Stormwater Ordinance to encourage

and manage Green Development Site Plan Review Water Quality Treatment Performance Standard Channel Protection Performance Standard O&M Requirements for structural BMPS Enforcement Response Procedure

2. Asset Management Program Inspection and maintenance schedule Catch basin cleaning Street and parking lot sweeping

Structural Stormwater Controls1. Catch basins

2. Curb and Gutter

3. Vegetated swales

4. Detention Basins/Underground Storage

5. Infiltration Bio Swales Rain Gardens Pervious pavement

Public Education1. Target audiences General Public (Kid vs. Adults) Industry/Commercial

2. Delivery mechanisms Deliverables Internet/Social Media Presentations/Displays TV/Radio Broadcast

Benefits of Storm Water Management for Small Communities

1. Infrastructure Reduced maintenance Increase life span Ensure existing system is not over loaded by new

development

2. Reduced flooding

3. Water Quality Improvements Reduce bacterial contamination Reduce algae blooms Reduce muddy water

4. Greenspace for Recreation/Aesthetics Increase quality of life Increase recreation and tourism

Cass River Small Community MS4 planning

1. Frankenmuth Master Plan

2. Watershed Management Plan – MS4 small community plans

3. What the plans covered

4. How to get started

Frankenmuth Master Plan1. 1990s mapped entire system and determined flow capacities

2. Made Cass River a Priority in 2005 Master Plan

3. Cass River Greenways Committee formed

4. Cass River Watershed Management Plan 2014

Cass River Watershed Management Plan Urban Area Analysis

Existing Managerial Best Management Practices

Cass River Watershed Management Plan Urban Area Analysis

Existing Structural Best Management Practices

1 Included two retention basins that use infiltration practices on their sites.2 This number is high because of a discharge into a man-made lake with a lot of storage capacity; site could become a regional basin. 3 Frankenmuth has a long history of storm water management planning and a significant amount of development since the planning has been in effect.4 Spicer Group designed one for a site in Caro; it was in residential area that was not surveyed. 5 Many sites did not have catchbasins on them; they were small areas and were graded to drain to the street storm drains or to an offsite drainage system. 6 Indicative of older vs newer development, the marked inlet grates did not make an appearance until after 2003, since approximately 2009 most inlet grates now have at least “Dump No Waste” as part of the casting. Therefore if a community has 0% it probably indicates little to no new development.

How to Get started1. Assess what is existing

a) Master Plan – Community Goals & Characterb) Ordinancesc) Stormwater system Structural Managerial

2. Prioritize Recommendations3. Identify Partners and technical resources4. Identify Funding

Guidance DocumentsFilling the Gaps

LID Manual for Michigan

Protecting Michigan’s Inland Lakes: A Guide for Local Governments

Tackling Barriers to Green Infrastructure: An Audit of Local Codes and Ordinances

800-662-9278 | Michigan.gov/EGLE

Julia Miller, Environmental Quality Analystmillerj2@Michigan.gov | 989-295-3913