BALTIMORE CITY MS4 RESTORATION AND TMDL WIP Baltimore City MS4 and TMDL Watershed Implementation Plan TABLE OF CONTENTS ACRONYMS AND GLOSSARY EXECUTIVE SUMMARY 1 INTRODUCTION ......................................................................................................................................... 1 2 BACKGROUND ........................................................................................................................................... 2 2.1 Existing Conditions ............................................................................................................................ 2 2.1.1 Geography .............................................................................................................................................. 2 2.1.2 History .................................................................................................................................................... 2 2.1.3 Neighborhoods ....................................................................................................................................... 3 2.1.4 Population Trends .................................................................................................................................. 4 2.1.5 Transportation Infrastructure ................................................................................................................ 4 2.1.6 Development Trends .............................................................................................................................. 5 2.1.7 Vacant Properties ................................................................................................................................... 5 2.1.8 Sanitation ................................................................................................................................................ 6 2.1.9 Flooding .................................................................................................................................................. 6 2.1.10 Stormwater Infrastructure and Streams ............................................................................................ 7 2.1.11 Shoreline ............................................................................................................................................. 7 2.1.12 Tree Canopy ........................................................................................................................................ 7 2.1.13 Land Usage and Zoning ....................................................................................................................... 8 2.2 MS4 Permit Coverage .......................................................................................................................10 2.2.1 Watersheds ........................................................................................................................................... 10 2.3 Local Government ............................................................................................................................13 2.4 Non‐government Organizations (NGOs) ...........................................................................................16 2.5 Impervious Area Coverage ...............................................................................................................19 2.5.1 Restoration Prior to 2010 ..................................................................................................................... 19 2.5.2 Watershed Assessments ....................................................................................................................... 20 2.6 TMDLs ..............................................................................................................................................21 2.6.1 Chesapeake Bay Total Maximum Daily Load (TMDL) ........................................................................... 21 2.6.2 Local Baltimore City TMDLs .................................................................................................................. 21 2.7 Other Regulatory Factors .................................................................................................................28 2.7.1 National Pollutant Discharge Elimination System Permits ................................................................... 28 2.7.2 Consent Decree for Unpermitted Discharges from the Wastewater Collection System ..................... 29 2.7.3 Baltimore City Critical Area Management Program ............................................................................. 29 2.7.4 Forest Conservation Act ....................................................................................................................... 30 August 19, 2015 (Revised) Page i Baltimore City MS4 and TMDL Watershed Implementation Plan 2.7.5 Maryland Stormwater Management Act of 2007 ................................................................................ 30 2.7.6 Erosion and Sediment Control Act of 2011 .......................................................................................... 30 2.7.7 International Green Construction Code ............................................................................................... 30 2.7.8 Baltimore City Landscape Manual ........................................................................................................ 31 2.8 Environmental Initiatives .................................................................................................................31 2.8.1 Healthy Harbor Initiative / Plan ............................................................................................................ 31 2.8.2 Vacants to Value (V2V) ......................................................................................................................... 32 2.8.3 Growing Green Initiative ...................................................................................................................... 32 2.8.4 Waste to Wealth (W2W) ...................................................................................................................... 33 2.8.5 Tree Baltimore ...................................................................................................................................... 33 2.8.6 Disaster Preparedness and Planning Project (DP3) .............................................................................. 33 2.8.7 Baltimore City Public Schools’ 10‐Year Plan ......................................................................................... 33 2.8.8 Baltimore Urban Waters Federal Partnership ...................................................................................... 34 3 WIP DEVELOPMENT ................................................................................................................................. 35 3.1 MS4 Public Meetings ........................................................................................................................35 3.2 Stakeholder Meetings ......................................................................................................................35 3.3 Vacant Lot Feasibility Studies for Stormwater Management ............................................................36 3.4 Flood prone areas ............................................................................................................................36 3.5 3‐1‐1 Service requests ......................................................................................................................36 3.6 Water Quality Data (SIS Data) ..........................................................................................................36 3.7 Priority Planting Map (TreeBaltimore) ..............................................................................................36 4 PROJECTS, PROGRAMS, AND PARTNERSHIPS ........................................................................................... 38 4.1 Projects ............................................................................................................................................38 4.1.1 Traditional BMPs .................................................................................................................................. 39 4.1.2 ESD Practices ........................................................................................................................................ 40 4.1.3 Alternative BMPs .................................................................................................................................. 41 4.2 Programs .........................................................................................................................................44 4.2.1 Expanded City‐wide mechanical street sweeping ................................................................................ 44 4.2.2 Preventive cleaning of catch basins and debris collectors ................................................................... 44 4.2.3 Illicit Discharge Detection and Elimination (IDDE) program ................................................................. 45 4.2.4 Erosion and sediment control practices ............................................................................................... 46 4.2.5 Public Education and Enforcement ...................................................................................................... 46 4.2.6 Proposed Methods for Load Reductions