Erosion Prevention and Sediment Control Manual
Total Page:16
File Type:pdf, Size:1020Kb
EPSC Manual Erosion Prevention and Sediment Control Manual City of Gresham, Oregon Watershed Division Department of Environmental Services 1333 NW Eastman Parkway Gresham, Oregon 97030-3813 Revised Jan 2011 . Table of Contents Chapter Page Chapter 1 Introduction....................................................... 1-1 1.1 Objective of the Manual .....................................................................................1-1 1.2 How to Use this Manual.....................................................................................1-2 Chapter 2 Single-Family/Duplex Development.................. 2-1 2.1 Overview ...............................................................................................................2-1 2.2 Requirements........................................................................................................2-1 2.3 Minimum BMPs for Single-Family/Duplex Projects ....................................2-2 2.4 Site Plan Checklist................................................................................................2-3 Chapter 3 All Other Development....................................... 3-1 3.1 Overview ...............................................................................................................3-1 3.2 Requirements........................................................................................................3-1 3.3 Minimum BMPs for All Other Development Projects .................................3-3 3.4 Plan Requirements for All Other Development.............................................3-5 Chapter 4 Inspection, Maintenance, and Enforcement...... 4-1 4.1 Overview ...............................................................................................................4-1 4.2 EPSC Manager Requirements............................................................................4-1 4.3 Pre-Construction Meeting ..................................................................................4-2 4.4 Modified EPSCP..................................................................................................4-3 4.5 Construction Schedule Review ..........................................................................4-3 4.6 Inspection Form...................................................................................................4-3 4.7 Installation.............................................................................................................4-4 4.8 Operations and Maintenance Guidelines.........................................................4-4 4.9 Inspection Requirements....................................................................................4-5 4.10 Erosion Control Contingency Items ................................................................4-7 4.11 Minimum Maintenace Requirements................................................................4-7 4.12 Sediment Removal/Disposal .............................................................................4-8 4.13 Inspection and Enforcement by the City.........................................................4-8 4.14 Inspection Checklist ............................................................................................4-9 4.15 Vegetation Establishment Criteria ..................................................................4-11 4.16 Common BMP Installation Mistakes and Maintenance Guidelines..........4-11 4.17 Stabilizing the Site and Terminating the Permit ...........................................4-12 January 2006 i Table of Contents Chapter 5 Best Management Practices in Detail ................5-1 5.1 Overview ...............................................................................................................5-1 5.2 Erosion Prevention..............................................................................................5-2 5.3 Runoff Control.....................................................................................................5-3 5.4 Sediment Control.................................................................................................5-4 EP-1 Scheduling 5-7 EP-2 Preservation of Existing Vegetation 5-9 EP-3 Surface Roughening 5-11 EP-4 Topsoiling 5-17 EP-5 Temporary Seeding and Planting 5-19 EP-6 Permanent Seeding and Planting 5-25 EP-7 Mycorrhizae and Biofertilizers 5-31 EP-8 Mulches 5-35 EP-9 Compost Blankets 5-41 EP-10 Erosion Control Blankets and Mats 5-45 EP-11 Soil Binders 5-51 EP-12 Stabilization Mats 5-59 EP-13 Wind Erosion/Dust Control 5-61 EP-14 Live Staking 5-63 EP-15 Pole Planting 5-67 EP-16 Live Fascines and Brush Wattles 5-71 EP-17 Brush Box 5-75 EP-18 Fascines with Subdrains 5-79 EP-19 Live Pole Drains 5-83 EP-20 Brush Packing or Live Gully Fill Repair 5-85 EP-21 Sodding 5-89 EP-22 Soil Stockpile Management 5-91 RC-1 Slope Drain 5-96 RC-2 Energy Dissipater/Outlet Protection 5-100 RC-3 Temporary Diversion Swale 5-102 RC-4 Temporary Diversion Dike 5-106 RC-5 Grass-Lined Channel (Turf Reinforcement Mats) 5-108 RC-6 Trench Drain 5-112 RC-7 Drop Inlet 5-114 RC-9 In-Stream Diversion Techniques 5-118 RC-10 In-Stream Isolation Techniques 5-122 RC-11 Check Dams 5-126 II JANUARY 2006 Table of Contents SC-1 Sediment Fence 5-132 SC-2 Sand Bag Barrier 5-136 SC-3 Gravel Bag Berm 5-140 SC-5 Rock or Brush Filter 5-142 SC-6 Compost Berms and Socks 5-146 SC-7 Fiber Rolls and Wattles 5-152 SC-8 Storm Drain Inlet Protection 5-156 SC-9 Temporary Sediment Basin 5-162 SC-10 Construction Entrance/Exit Tracking Controls 5-166 SC-11 Tire Wash 5-170 SC-12 Undercut Lots/Sidewalk Subgrades 5-174 SC-13 Temporary Sediment Trap 5-176 Chapter 6 Non-Stormwater Pollution Controls .................. 6-1 6.1 Overview ...............................................................................................................6-1 6.2 Definition of Non-Stormwater Pollution Controls........................................6-1 NS-1 Dewatering and Ponded Water Management 6-5 NS-2 Paving Operations Controls 6-7 NS-3 Temporary Equipment Bridge 6-9 NS-4 Illicit Connection/Illegal Discharge 6-13 NS-5 Vehicle and Equipment Cleaning 6-15 NS-6 Vehicle and Equipment Fueling, Maintenance, and 6-17 Storage NS-7 Material Delivery and Storage Controls 6-19 NS-8 Material Use 6-21 NS-9 Non-Soil Stockpile Management 6-23 NS-10 Spill Prevention and Control Procedures 6-25 NS-11 Solid Waste Management 6-27 NS-12 Hazardous Materials and Waste Management 6-29 NS-13 Contaminated Soil Management 6-31 NS-14 Concrete Management 6-33 NS-15 Sanitary Waste Management 6-35 NS-16 Liquid Waste Management 6-37 NS-17 Training and Signage 6-39 January 2006 iii Table of Contents Tables 2.3.1 Minimum BMPs for All Single-Family/Duplex Projects..............................2-2 2.4.1 Site Plan Checklist................................................................................................2-3 3.3.1 Minimum BMPs for All Other Development Projects .................................3-4 3.3.2 Plan Requirement Checklist ...............................................................................3-4 4.13.1 Inspection and Maintenance Checklist.............................................................4-9 6.2.1 Construction Work Site Activities and Associated Pollutants......................6-2 Figures 1.2-1 Development Process Overview.......................................................................1-3 2.4-1 Example Single-Family or Duplex Site Plan....................................................2-4 3.4-2 Sample Site Plans .................................................................................................3-7 4.9.1 Sample Erosion Control Inspection Form ......................................................4-6 Appendixes A Excerpts from the Gresham Development Code that Pertain to Erosion Prevention and Sediment Control B Soil Erosion Potential (RUSLE) and Local Soil Characteristics C Acronyms and Terms D Conversion and Reference Tables E Costs & Suppliers F Sources of Information and References IV JANUARY 2006 Introduction Chapter 1 Introduction 1.0 Introduction The City of Gresham is committed to enhancing, protecting and maintaining the livability of the community and the quality of the water. Within the jurisdictional boundaries of the City of Gresham, sensitive areas include, but are not limited to, the Columbia Slough and Johnson, Fairview, and Kelly Creeks and their tributaries. EPSC measures are required on all Based on the fact that the stream’s within the city limits are listed as construction sites that disturb soil degraded on the state’s water quality limited streams 303 (d) list, one of within the City of Gresham. the City’s primary goals is implementation of an erosion prevention and sediment control program that prevents sediment and other stormwater pollutants from entering streams. This Erosion Prevention and Sediment Control Manual (Manual) has been prepared to support development of stormwater best management practices (BMPs) for construction sites required to comply with the NPDES 1200-C General Permit, current state turbidity rule, and City of Gresham requirements for small and large projects. Keep in mind that City requirements may be more stringent than DEQ requirements. 1.1 Objective of the Manual This Manual provides users with a standardized set of procedures and tools: best management practices (BMPs) for implementation on construction projects throughout the City of Gresham. When appropriately designed and implemented, the BMPs will reduce water quality impacts by land-disturbing activities. The authority