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S-12 Storm Sewer System Cleaning Frequency and prioritization of storm sewer cleaning is affected by multiple factors such as the activity and intensity of use in the tributary area (e.g., parking lot, stadium), storm sewer system design, municipal budgets (staff and equipment), and other factors. To be most effective, storm sewer cleaning needs an effective recordkeeping system and clearly defined procedures. CWP (2009) recommends the following practices: • Tracking: The location and maintenance of storm drains should be tracked using a database and spatial referencing system (e.g., Global Positioning System or Geographic Information System). Additionally, knowing the type and era of the storm drain system may be of use since some inlets/catch basins are designed to be self-cleaning while others have some trapping capacity. • Frequency: Should be defined such that blockage of storm sewer outlet is prevented and it is recommended that the sump should not exceed 40- 50 percent of its capacity. Semi-annual cleanouts in residential streets and monthly cleanouts for industrial streets are suggested by Pitt and Bissonnett (1984) and Mineart and Singh (1994). More frequent cleanouts should be scheduled in the fall as leaves can contribute 25% of nutrient loadings in catch basins. • Technology: A variety of methods of cleaning catch basins are available, including manual cleaning, eductor vehicles, vacuum cleaning and vacuum combination jet cleaning. Choose the approach that is most effective for site conditions, taking into consideration budget, equipment, and staffing constraints. • Staff training: Operators need to be properly trained in catch basin maintenance including waste collection and disposal methods. Staff should also be trained to report water quality problems and illicit discharges. • Material disposal: Most catch basin waste is of acceptable quality for landfills. If it is suspected that catch basin waste contains hazardous material, it should be tested and disposed of accordingly. Maintenance personnel should keep a log of the amount of sediment collected and the removal date at the catch basin. SSC-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3
Chapter 6 BMP Maintenance Contents 1.0 Introduction ...................................................................................................................................... 1 2.0 Defining Maintenance Responsibility for Public and Private Facilities ...................................... 1 3.0 Developing a Maintenance Plan ...................................................................................................... 2 4.0 Grass Buffers and Swales ................................................................................................................ 5 4.1 Inspection .................................................................................................................................................. 5 4.2 Debris and Litter Removal ........................................................................................................................ 5 4.3 Aeration ..................................................................................................................................................... 5 4.4 Mowing ..................................................................................................................................................... 5 4.5 Irrigation Scheduling and Maintenance .................................................................................................... 6 4.6 Fertilizer, Herbicide, and Pesticide Application ........................................................................................ 6 4.7 Sediment Removal .................................................................................................................................... 7 5.0 Bioretention (Rain Garden or Porous Landscape Detention) ...................................................... 7 5.1 Inspection .................................................................................................................................................. 7 5.2 Debris and Litter Removal ........................................................................................................................ 7 5.3 Mowing and Plant Care ............................................................................................................................. 7 5.4 Irrigation Scheduling and Maintenance .................................................................................................... 8 5.5 Replacement of Wood Mulch ................................................................................................................... 8 5.6 Sediment Removal and Growing Media Replacement .............................................................................. 8 6.0 Green Roofs ...................................................................................................................................... 9 6.1 Inspection .................................................................................................................................................. 9 6.2 Plant Care and Media Replacement .......................................................................................................... 9 6.3 Irrigation Scheduling and Maintenance .................................................................................................. 10 7.0 Extended Detention Basins (EDBs) .............................................................................................. 10 7.1 Inspection ................................................................................................................................................ 10 7.2 Debris and Litter Removal ...................................................................................................................... 11 7.3 Mowing and Plant Care ........................................................................................................................... 11 7.4 Aeration ................................................................................................................................................... 11 7.5 Mosquito Control .................................................................................................................................... 11 7.6 Irrigation Scheduling and Maintenance .................................................................................................. 12 7.7 Sediment Removal from the Forebay, Trickle Channel, and Micropool ................................................. 12 7.8 Sediment Removal from the Basin Bottom ............................................................................................. 12 7.9 Erosion and Structural Repairs ................................................................................................................ 12 8.0 Sand Filters ..................................................................................................................................... 12 8.1 Inspection ................................................................................................................................................ 12 8.2 Debris and Litter Removal ...................................................................................................................... 13 8.3 Filter Surface Maintenance ..................................................................................................................... 13 8.4 Erosion and Structural Repairs ................................................................................................................ 13 November 2010 Urban Drainage and Flood Control District 6-i Urban Storm Drainage Criteria Manual Volume 3
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Urban Storm Drainage Criteria Manua
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Table of Contents Urban Storm Drain
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Disclaimer Attention all persons us
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Preface 1.0 Acknowledgements The Ur
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Preface 2.0 Purpose Volume 3 of the
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Preface • Glossary: A glossary is
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Preface fps ft FHWA GB GS H:V HSG F
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Chapter 1 Stormwater Management and
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Stormwater Management and Planning
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Chapter 2 BMP Selection Contents 1.
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BMP Selection Chapter 2 area is too
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BMP Selection Chapter 2 provided by
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BMP Selection Chapter 2 Table 2-2.
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BMP Selection Chapter 2 1.4 Storage
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BMP Selection Chapter 2 1.8 Online
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BMP Selection Chapter 2 reflect the
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BMP Selection Chapter 2 Figure 2-2.
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BMP Selection Chapter 2 3.0 Life Cy
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BMP Selection Chapter 2 5.0 Referen
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Figure 3-15. Colorado Green Impervi
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Calculating the WQCV and Volume Red
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Chapter 4 Treatment BMPs Contents 1
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Treatment BMPs Chapter 4 2.0 Treatm
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Treatment BMPs Chapter 4 3.0 Refere
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Grass Buffer T-1 4. Buffer Slope: T
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Grass Buffer T-1 Turf grasses such
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Grass Buffer T-1 Figure GB-2. Typic
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Grass Buffer T-1 References Barrett
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T-2 Grass Swale • Provide access
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T-2 Grass Swale 8. Underdrain: An u
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T-2 Grass Swale Figure GS-1. Grass
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T-2 Grass Swale References Chow, Ve
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T-3 Bioretention Site Selection Bio
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T-3 Bioretention Table B-1. Class 1
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Bioretention T-3 Pipe Diameter Tabl
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Bioretention T-3 6. Inlet/Outlet Co
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Bioretention T-3 Table B-6. Native
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Bioretention T-3 Figure B-1 - Typic
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Bioretention T-3 November 2010 Urba
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Bioretention T-3 Figure B-2. Geomem
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Bioretention T-3 Construction Examp
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Bioretention T-3 Design Example The
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Bioretention T-3 Design Procedure F
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T-4 Green Roof reduction benefits o
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T-4 Green Roof Figure GR-1. Typical
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Green Roof T-4 6. Planting Method:
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Green Roof T-4 Additional Design Gu
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Green Roof T-4 Colorado Examples Th
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Extended Detention Basin (EDB) T-5
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T-5 Extended Detention Basin (EDB)
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T-6 Sand Filter adjacent structures
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T-6 Sand Filter 5. Impermeable Geom
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T-6 Sand Filter Figure SF-1. Sand F
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T-6 Sand Filter Design Examples The
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Retention Pond T-7 Description A re
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Retention Pond T-7 H = depth of sur
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Retention Pond T-7 Aesthetic Design
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Retention Pond T-7 Design Example F
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Retention Pond T-7 Design Procedure
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Retention Pond T-7 References Bedie
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T-8 Constructed Wetland Pond be des
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T-8 Constructed Wetland Pond Figure
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T-8 Constructed Wetland Pond Design
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T-8 Constructed Wetland Pond Refere
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T-9 Constructed Wetland Channel A c
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T-9 Constructed Wetland Channel Fig
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Permeable Pavement Systems T-10 Des
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Permeable Pavement Systems T-10 •
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Permeable Pavement Systems T-10 inf
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Permeable Pavement Systems T-10 3.
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Permeable Pavement Systems T-10 Fig
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Permeable Pavement Systems T-10 Tab
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Permeable Pavement Systems T-10 con
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Permeable Pavement Systems T-10 No-
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Permeable Pavement Systems T-10 Des
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Permeable Interlocking Concrete Pav
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Concrete Grid Pavement T-10.2 Note:
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Pervious Concrete T-10.3 This BMP F
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T-10.4 Porous Gravel Designing for
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T-10.5 Reinforced Grass Designing f
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T-11 Underground BMPs Underground B
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T-11 Underground BMPs • Traffic L
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T-11 Underground BMPs Design Proced
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T-11 Underground BMPs • Wisconsin
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T-11 Underground BMPs For these rea
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T-12 Outlet Structures Orifice Plat
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T-12 Outlet Structures 100 A t / A
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T-12 Outlet Structures Table OS-3a.
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T-12 Outlet Structures Outlet Geome
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T-12 Outlet Structures Figure OS-2.
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Chapter 5 Source Control BMPs Conte
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Page 294 and 295: S-1 Covering Outdoor Storage and Ha
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Page 300 and 301: S-3 Disposal of Household Waste •
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Page 304 and 305: S-4 Illicit Discharge Controls •
Page 307 and 308: Good Housekeeping S-5 Description G
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Page 323 and 324: Landscape Maintenance S-9 Descripti
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Construction BMPs Chapter 7 When se
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Construction BMPs Chapter 7 • Tre
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Construction BMP Plan Symbols MS-2
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Construction BMP Plan Symbols MS-4
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Surface Roughening (SR) EC-1 Descri
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Surface Roughening (SR) EC-1 Novemb
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Temporary and Permanent Seeding (TS
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Soil Binders (SB) EC-3 Description
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Soil Binders (SB) EC-3 Factors to c
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Soil Binders (SB) EC-3 Installation
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Mulching (MU) EC-4 Description Mulc
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Compost Blanket and Filter Berm (CB
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Compost Blanket and Filter Berm (CB
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Rolled Erosion Control Products (RE
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EC-7 Temporary Slope Drains (TSD) M
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EC-7 Temporary Slope Drains (TSD) S
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EC-8 Temporary Outlet Protection (T
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Rough Cut Street Control (RCS) EC-9
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Rough Cut Street Control (RCS) EC-9
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EC-10 Earth Dikes and Drainage Swal
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EC-10 Earth Dikes and Drainage Swal
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Terracing (TER) EC-11 Description T
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Check Dams (CD) EC-12 Description C
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Check Dams (CD) EC-12 November 2010
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Check Dams (CD) EC-12 November 2010
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Streambank Stabilization (SS) EC-13
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Wind Erosion/Dust Control (DC) EC-1
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MM-1 Concrete Washout Area (CWA) se
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MM-1 Concrete Washout Area (CWA) CW
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MM-2 Stockpile Management (SM) When
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MM-2 Stockpile Management (SM) SP-4
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MM-2 Stockpile Management (SM) SP-6
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MM-3 Good Housekeeping Practices (G
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SC-1 Silt Fence (SF) Maintenance an
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SC-1 Silt Fence (SF) SF-4 Urban Dra
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SC-2 Sediment Control Log (SCL) Alt
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SC-2 Sediment Control Log (SCL) SCL
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Straw Bale Barrier (SBB) SC-3 Descr
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Straw Bale Barrier (SBB) SC-3 Novem
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SC-4 Brush Barrier (BB) Maintenance
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SC-5 Rock Sock (RS) RS-2 Urban Drai
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Inlet Protection (IP) SC-6 Descript
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Inlet Protection (IP) SC-6 • Remo
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Inlet Protection (IP) SC-6 August 2
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Inlet Protection (IP) SC-6 August 2
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Sediment Basin (SB) SC-7 Descriptio
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Sediment Basin (SB) SC-7 Illustrati
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Sediment Basin (SB) SC-7 August 201
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Sediment Basin (SB) SC-7 August 201
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SC-8 Sediment Trap (ST) ST-2 Urban
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Vegetated Buffers (VB) SC-9 Descrip
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SC-10 Chemical Treatment (CT) Maint
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SM-1 Construction Phasing/Sequencin
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SM-1 Construction Phasing/Sequencin
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SM-2 Protection of Existing Vegetat
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Construction Fence (CF) SM-3 Descri
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Construction Fence (CF) SM-3 Novemb
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SM-4 Vehicle Tracking Control (VTC)
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Stabilized Staging Area (SSA) SM-6
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Stabilized Staging Area (SSA) SM-6
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Street Sweeping and Vacuuming (SS)
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SM-8 Temporary Diversion Methods (T
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Dewatering Operations (DW) SM-9 Des
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Dewatering Operations (DW) SM-9 Nov
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Dewatering Operations (DW) SM-9 Nov
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SM-10 Temporary Stream Crossing (TS
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SM-11 Temporary Batch Plant (TBP) A
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Glossary 1 Note: This glossary is n
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Effluent Limitation Guidelines (ELG
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Low Impact Development (LID): LID i
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Revised Universal Soil Loss Equatio
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Bibliography Altitude Training Asso
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Bibliography U.S. Environmental Pro
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Bibliography Metcalf and Eddy, Inc.
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Bibliography Water Environment Fede
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