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Designer/Reviewer Checklist for Rain Gardens/Bioretention Was Appendix E: Soil infiltration Testing Protocol followed?* Appropriate areas of the site evaluated? Infiltration rates measured? Were the bioretention design guidelines followed? Item Yes No N/A Notes Minimum 2-foot separation between the bed bottom and bedrock/SHWT? Soil permeability acceptable? If not, appropriate underdrain provided? Natural, uncompacted soils? Level infiltration area (bed bottom)? Excavation in rain garden areas minimized? Hotspots/pretreatment considered? Loading ratio below 5:1 (described in infiltration BMP)? Ponding depth limited to 18 inches? Drawdown time less than 48 hours? Positive overflow from system? Erosion and Sedimentation control? Feasible construction process and sequence? Entering flow velocities non-erosive or erosion control devices? Acceptable planting soil specified? Appropriate native plants selected? Maintenance accounted for and plan provided? Review of treatment volume? Review of calculations? * In general, the protocol should be followed as much as possible. References Clar et al., Rethinking Bioretention Design Concepts. Pennsylvania Stormwater Management Symposium, October 2007. Lawrence Technological University research: www.ltu.edu/stormwater/bioretention.asp Minnesota Stormwater Manual, 2006. St. Paul, MN: Minnesota Pollution Control Agency, 2006. Pennsylvania Stormwater Best Management Practices Manual, 2006. Pennsylvania Department of Environmental Protection. 2006. Prince George’s County Bioretention Manual, 2002. Prince George’s County, MD: Department of Environmental Resources, 2002. Rain Gardens of West Michigan: www.raingardens.org Southeastern Oakland County Water Authority: www.socwa.org/lawn_and_garden.htm Rain Gardens: A household way to improve water quality in your community. University of Wisconsin-Extension and Wisconsin Department of Natural Resources, 2002. Wild Ones Natural Landscapers: www.for-wild.org/ LID Manual for Michigan – Chapter 7 Page 146
BMP Fact Sheet Variations • Rain barrels Capture Reuse Structures designed to intercept and store runoff from rooftops allow for its reuse, reducing volume and overall water quality impairment. Stormwater is contained in the structures and typically reused for irrigation or other water needs. Cistern at Fairlane Green shopping center, Allen Park, MI Applications Stormwater Quantity Functions Residential Yes Volume High Commercial Yes Groundwater Recharge • Cisterns, both underground and above ground • Tanks • Storage beneath a surface (using manufactured products) Key Design Features • Small storm events are captured with most structures • Provide overflow for large storm events • Discharge water before next storm event • Consider site topography, placing structure up-gradient in order to eliminate pumping needs Site Factors • Water table to bedrock depth – N/A (although must be considered for subsurface systems) • Soils – N/A • Slope – N/A • Potential hotspots – Yes with treatment • Max. drainage area – N/A Benefits • Provides supplemental water supply • Wide applicability • Reduces potable water use • Related cost savings and environmental benefits Limitations • Manages only relatively small storm events which requires additional management and use for the stored water. LID Manual for Michigan – Chapter 7 Page 147 Low Ultra Urban Yes Peak Rate Low* Industrial Yes Stormwater Quality Functions Retrofit Yes TSS Med Highway/Road No TP Med Recreational Yes Cost • Rain Barrel • Cistern • Manufactured porduct NO3 Med Temperature Med Additional Considerations Low Med Varies Maintenance Med Winter Performance Med * Depends on site design
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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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Page 110 and 111: Case Study: Western Michigan Univer
Page 112 and 113: Protection of sensitive areas in re
Page 114 and 115: then weightings of potential develo
Page 116 and 117: Floodplains • Design the project
Page 118 and 119: References Arendt, Randall G. Growi
Page 120 and 121: Case Study: Willard Beach Implement
Page 122 and 123: Table 6.2 Narrow residential street
Page 124 and 125: Parking Parking lots often comprise
Page 126 and 127: Designer/Reviewer Checklist for Red
Page 128 and 129: Case Study: Saugatuck Center for th
Page 130 and 131: In addition to directing runoff to
Page 132 and 133: Designer/Reviewer Checklist for Dis
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,
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Page 162 and 163: Ford Rouge Plant cistern Vertical s
Page 164 and 165: Design Considerations Design and in
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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 182 and 183: Site Factors Type Basin Bottom Rela
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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
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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
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Case Study: Saugatuck Center for th
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Infiltration basins, subsurface inf
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Figure 7.24 Cross-section of dry we
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• The soil mantle should be prese
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Additional design considerations fo
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• Though roofs are generally not
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Subsurface infiltration bed Source:
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Stormwater Functions and Calculatio
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• Protect the infiltration area f
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Additional Construction Guidelines
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Designer/Reviewer Checklist for Inf
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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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