Low Impact Development Manual for Michigan - OSEH - University ...

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Site Factors Type Basin Bottom Relative to Water Table Soils Slope Potential Hotspots Dry Pond Above N/A Low/Med Yes w/ considerations Wet Pond Can be below WT Const. Wetland Underground Detention Can be below WT Above N/A Low/ Med C or D* Low Yes w/ considerations C or D* Low Yes w/ considerations Yes w/ considerations Max. Drainage Area (acres) 50 Good peak rate performance, wide applicability, can be used as temporary sediment basin Benefits Limitations 50 Good peak rate & TSS performance, wide applicability, potential aesthetic value., can be used as temporary sediment basin 50 Good peak rate & water quality performance, wide applicability, potential aesthetic/ habitat value 30 Dual use, good peak rate performance, wide applicability (including ultra-urban and redev.) Low volume/GW recharge and water quality benefits, must be combined with other BMPs, high total cost Low volume/GW recharge benefits, high total cost, potentially thermal impact Limited volume/GW recharge benefits, high total cost, potentially thermal impact *C or D soils typically work without modification. A and B soils may require modifications to reduce their permeability. Additional Considerations Low volume/GW recharge and water quality benefits, must be combined with other BMPs, high cost, maintenance considerations Cost • High – Cost for above ground basins must include excavation of basin, construction of berm, and installation of storm sewer conveyance system, including pipes and structures. Wet ponds and constructed wetlands may add additional cost for enhanced vegetation • The cost of each basin is highly dependent on the size of the basin and site characteristics. Maintenance Varies by type as follows: Type Maintenance Dry Pond High/Low - Year round maintenance for vegetation; one time per year sediment removal Wet Pond Low/Med Constructed Wetland Low/Med Underground Detention Winter Performance • Med/High Med/High LID Manual for Michigan – Chapter 7 Page 170
Case Study: Inkster Valley Constructed Wetlands Project Wayne County This project site is located in the Inkster Valley Golf Course in the City of Inkster, MI. There are a total of seven wetland mitigation and enhancement areas throughout the golf course. The intent of this demonstration project is to determine the effectiveness of, and develop design guidelines for, the use of existing and created freshwater wetlands for treating nonpoint source pollution. The evaluation will include identifying pollutants removed by the wetlands, the efficiency of the removal processes, and the effects of sediments on removal efficiency. Specific objectives of the wetland demonstration project include developing a site selection strategy for assessing the use of existing and restored wetlands and for developing a methodology that would identify feasible locations for designing and constructing new wetlands. Site selection techniques were developed using an integrated approach, incorporating elements of the ecological features, wetland hydrology, water quality considerations, watershed characteristics, and surrounding land use. The design of the sites incorporated features that allow for manipulating stormwater flow quantity and duration, and allow for directly comparing the effectiveness of nonpoint source pollution control in existing and created wetlands receiving stormwater runoff from a single watershed. Design criteria for each of the wetland areas were developed from modeled hydrological data combined with characteristics of the available treatment area. The wetland creation and enhancement areas contain similar design elements that provide comparable experimental data which can be related to known design parameters. These elements include using a sediment forebay to filter large particles before the stormwater enters the wetland system; treatment of “first flush” for most storm events; designed discharge outlets to the Rouge River with monitoring capabilities; and intermediate monitoring points where applicable. Inkster Valley constructed wetland Source: Rouge River National Wet Weather Demonstration Project Estimated Total Project Cost Maintenance Responsibility Project Contact Case Study Site Considerations $464,826 Wayne County Don Tilton, Ph.D, Vice President, ECT, (734) 769-3004, dtilton@ectinc.com LID Manual for Michigan – Chapter 7 Page 171
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A Design Guide for Implementers and
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LID Manual for Michigan Page ii
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Shawn Keenan, City of Auburn Hills
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Appendix G: Stormwater Management P
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Figure 7.18 Filter with infiltratio
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Table 7.9 Definitions of Wetland Ve
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How this manual is organized This m
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discuss a new development. The staf
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In a natural woodland or meadow in
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Almost all components of the urban
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Benefits of implementing LID Implem
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Table 2.2 Summary of Cost Compariso
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Getting started with LID LID can be
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Precipitation also varies slightly
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Figure 3.4 Soil Freezing in Lower M
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Figure 3.6 Michigan Surficial Geolo
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Most soils in Michigan are classifi
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Table 3.3 Representative Cation Exc
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There is currently no single broadl
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Wellhead protection areas/ public w
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Table 3.4 Michigan Rivers and Strea
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References * Bailey, R.M and G.R. S
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LID Manual for Michigan - Chapter 3
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Following are sample goals and poli
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Develop regulations that encourage/
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Construction activity • Minimize
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Street sweeping in Bloomfield Towns
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Resistance from internal sources an
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Site constraints that may pose chal
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Entity Stormwater Jurisdiction Coun
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Step 1: Property acquisition and us
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can be incorporated into the develo
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Step 3: Integrate municipal, county
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BMP Selection Process This chapter
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Case Study: Title The second page o
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Case Study: Pokagon Band of Potawat
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Figure 6.2 Conventional development
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Designer/Reviewer Checklist for Clu
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Case Study: Minimizing soil compact
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4. Topsoil stockpiling and storage
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References Hanks, D. and Lewandowsk
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Case Study: Longmeadow Development
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Applications Minimizing the total d
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Criteria to Receive Credits for Min
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Case Study: Marywood Health Center
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Design Considerations 1. Identify n
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References Center for Watershed Pro
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Case Study: Macomb County Public Wo
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Zone 3: Also termed the “outer zo
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• Limit clearing and grading of f
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Case Study: Western Michigan Univer
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Protection of sensitive areas in re
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then weightings of potential develo
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Floodplains • Design the project
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References Arendt, Randall G. Growi
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Case Study: Willard Beach Implement
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Table 6.2 Narrow residential street
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Parking Parking lots often comprise
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Designer/Reviewer Checklist for Red
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Case Study: Saugatuck Center for th
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In addition to directing runoff to
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Page 134 and 135: Runoff Volume/ Infiltration Runoff
Page 136 and 137: Figure 7.1 Structural BMP Selection
Page 138 and 139: In general, the techniques describe
Page 140 and 141: Table 7.3 Additional BMP considerat
Page 142 and 143: Maintenance Provides guidance on re
Page 144 and 145: Case Study: Grayling Stormwater Pro
Page 146 and 147: Figure 7.5 illustrates a schematic
Page 148 and 149: Flow inlet: Curbs and curb cuts Cur
Page 150 and 151: Roads and highways Figure 7.13 show
Page 152 and 153: Design Considerations Bioretention
Page 154 and 155: 7. Planting periods will vary but,
Page 156 and 157: Construction Guidelines The followi
Page 158 and 159: Designer/Reviewer Checklist for Rai
Page 160 and 161: Case Study: Stormwater Capture with
Page 162 and 163: Ford Rouge Plant cistern Vertical s
Page 164 and 165: Design Considerations Design and in
Page 166 and 167: the tank can accommodate.) (www.sta
Page 168 and 169: References “Black Vertical Storag
Page 170 and 171: Case Study: Constructed Linear Sand
Page 172 and 173: Surface non-vegetated filter A surf
Page 174 and 175: Large subsurface filter Large Subsu
Page 176 and 177: would modestly increase constructio
Page 178 and 179: During inspection the following con
Page 180 and 181: References Atlanta Regional Commiss
Page 184 and 185: LID Manual for Michigan - Chapter 7
Page 186 and 187: Variations For this manual, detenti
Page 188 and 189: Precast concrete vault Source: Amer
Page 190 and 191: surface into the pond to a maximum
Page 192 and 193: sink for pollutants and generally h
Page 194 and 195: The presettlement and post-developm
Page 196 and 197: wet pond and constructed wetland op
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Page 200 and 201: Designer/Reviewer Checklist for Dry
Page 202 and 203: Designer/Reviewer Checklist for Con
Page 204 and 205: References AMEC Earth and Environme
Page 206 and 207: Key Design Features • Depth to wa
Page 208 and 209: Case Study: Saugatuck Center for th
Page 210 and 211: Infiltration basins, subsurface inf
Page 212 and 213: Figure 7.24 Cross-section of dry we
Page 214 and 215: • The soil mantle should be prese
Page 216 and 217: Additional design considerations fo
Page 218 and 219: • Though roofs are generally not
Page 220 and 221: Subsurface infiltration bed Source:
Page 222 and 223: Stormwater Functions and Calculatio
Page 224 and 225: • Protect the infiltration area f
Page 226 and 227: Additional Construction Guidelines
Page 228 and 229: Designer/Reviewer Checklist for Inf
Page 230 and 231: References AMEC Earth and Environme
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Case Study: Washtenaw County West S
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Design Considerations Level spreade
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3. Inspect the filter strip and the
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References Hathaway, Jon and Hunt,
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Case Study: Black River Heritage Tr
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Figure 7.31 Native meadow species c
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Applications • Residential - Nati
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5. Amend soil: In those sites where
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Water quality improvement Landscape
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References Arendt, R. Growing Green
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Case Study: Grand Valley State Univ
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Staging, construction practices, an
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Reinforced turf/gravel Reinforced t
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4. Pervious pavement and infiltrati
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12. Proper pervious pavement applic
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Figure 7.40 Open-graded, clean, coa
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Repairs • Surface should never be
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References Adams, Michele. “Porou
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Case Study: Michigan Avenue Streets
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Native vegetation should be used in
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Design Considerations • Suggested
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oxes, etc. should be installed in a
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References Stormwater Management Gu
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Case Study: Nankin Mills Interpreti
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Figure 7.45 Schematic of a three-zo
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3. Analyze site’s vegetative feat
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Black River Heritage Trail and Wate
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Table 7.14 Tree spacing per acre Sp
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4. Stable debris As Zone 1 reaches
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References Alliance for the Chesape
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Case Study: Ann Arbor District Libr
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• Major compaction - Deep compact
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e. Add six inches compost or other
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References “Achieving the Post-Co
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Case Study: Wayne County, MI Ford R
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slope needs to be determined. This
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Figure 7.52 Sandy soils with HSG Gr
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Figure 7.56 Clay Loam, Silty Clay o
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• Guidance information, usually i
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Case Study: City of Battle Creek Ci
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Table 7.16 Vegetated roof types Ext
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Dual media assemblies Dual media (F
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Over a period of time roots can dam
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Technical requirements Root resista
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Stormwater Functions and Calculatio
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Designer/Reviewer Checklist for Veg
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Case Study: Meadowlake Farms Bioswa
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lower flows (two-year storm) to dra
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Stone check dams Source: Road Commi
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Table 7.18 Permanent stabilization
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Peak rate mitigation Vegetated swal
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Designer/Reviewer Checklist for Veg
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Case Study: LaVista Storm Drain Pro
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Basket type inserts Basket type ins
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Maintenance is crucial to the effec
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Roadway design, construction, and m
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• Vegetated systems such as grass
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Of the options explored, the study
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Figure 8.3 Tree planting detail Sou
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Opportunities for MPOs Metropolitan
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Construction on the project began i
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The following are examples of imple
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Horizontal grates can be added to a
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East Hills Center City of Grand Rap
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Implementing LID in High Risk Areas
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References AASHTO Center for Enviro
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LID Design Criteria Defining the hy
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Flood control Flood control is base
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Table 9.1 90 Percent Nonexceedance
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Initial abstraction (I a ) includes
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The Curve Number Method is less acc
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I = the average rainfall intensity
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Table 9.4 Rainfall Events of 24-Hou
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• Proceed to Flow Chart B, Peak R
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FLOW CHART A Stormwater Calculation
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Excessively drained soils may requi
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Worksheet 2. Sensitive Natural Reso
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WORKSHEET 4. Calculations for Volum
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WORKSHEET 6. SMALL SITE / SMALL IMP
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WORKSHEET 8. WATER QUALITY WORKSHEE
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Reese, S. and J. Lee. “Summary of
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ing Department. Most maintenance co
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The Hydrotech Garden Roof Assembly
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Bioswales provide infiltration of s
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The Ingham County Drain Commissione
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Constructed wetland The lowest port
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LID Manual for Michigan - Appendix
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Check dam Cistern Clustering Combin
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H:V Horizontal to vertical ratio. H
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Planter box Pervious pavement Phase
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Total phosphorous (TP) The total am
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Ecoregion recommendations are also
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Zone A Planting Zone = two-to-four
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Zone C Planting Zone = zero-to-two
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Representative Zone C Species Cardi
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Botanical Name Common Name Height C
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Zone E Planting Zone = four-to-18 i
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Representative Zone E Species Tall
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Botanical Name Common Name Height C
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Zone G Planter Box Plantings Althou
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Zone H Vegetated Roof Plantings Res
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Pervious Berms (Vegetated Filter St
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Vegetated roofs Some key components
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Step 1. Background evaluation Prior
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Methodology for double-ring infiltr
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Step 4. Use design considerations p
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Detention BMP Inspection Checklist*
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Infiltration BMPs Inspection Checkl
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Bioretention Inspection Checklist*
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Bioswale, Filter Strip Inspection C
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6. The [Community] or its designee
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STATE OF MICHIGAN ) ) ss. COUNTY OF
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Exhibit B - Location Map (Sample) S
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• Stormwater runoff, soil erosion
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Retention. A holding system for sto
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ARTICLE IV. STORMWATER PLAN REQUIRE
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The particular facilities and measu
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10. Rainfall Frequency Atlas of the
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Table H.2 Pre-Treatment Options for
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f. Complete development agreements
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must be submitted to the Michigan D
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C. Construction Plans shall be revi
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fine for each day. The rights and r
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Southeast Michigan Council of Gover
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