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Storm Water Management Criteria Manual

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Storm Water Management Criteria Manual S˝˘˛˖ˠˊ˝ˎ˛ Mˊ˗ˊːˎ˖ˎ˗˝ C˛˒˝ˎ˛˒ˊ Mˊ˗˞ˊ˕ June 2019 Prepared by: City of Tulsa - Engineering Services Department 2317 South Jackson Avenue Tulsa, OK 74107 CITY OF TULSA, OKLAHOMA TABLE OF CONTENTS Chapter 100 EXECUTIVE SUMMARY .............................................................. 100 INTRODUCTION .................................................................................................... 100 Manual Contents ....................................................................................... 100 Executive Summary.................................................................................. 100 ADMINISTRATIVE PROVISIONS ....................................................................... 101 General Provisions .................................................................................... 101 Stormwater Policy and Standards ............................................................ 101 Drainage and Detention Report Requirements ........................................ 102 TECHNCIAL PROVISIONS .................................................................................. 102 Hydrology Analysis .................................................................................. 102 Hydraulic Analysis ................................................................................... 102 Street Drainage, Storm Sewer Inlets and Pipe Design ............................. 103 Detention Ponds ........................................................................................ 103 OTHER REQUIREMENTS .................................................................................... 104 Construction Stormwater Pollution Prevention Plan ............................... 104 Maintenance and Design .......................................................................... 104 Chapter 200 GENERAL PROVISIONS ............................................................. 200 APPLICATION ........................................................................................................ 200 PURPOSE AND INTENT ....................................................................................... 200 ENACTMENT AUTHORITY ................................................................................. 200 AMENDMENT AND REVISIONS ........................................................................ 200 ENFORCEMENT RESPONSIBILITY ................................................................... 200 INTERPRETATION ................................................................................................ 201 Minimum Standards ................................................................................. 201 Other Regulations ..................................................................................... 201 Other Agreements ..................................................................................... 201 VARIANCES ........................................................................................................... 201 Stormwater Management Criteria Manual i October 2019 Table of Contents CITY OF TULSA, OKLAHOMA Variance Procedure .................................................................................. 202 Technical Variance Procedure.................................................................. 202 APPEALS ................................................................................................................. 202 REVIEW AND APPROVAL .................................................................................. 202 Chapter 300 STORMWATER POLICY AND STANDARDS ............................. 300 GOALS .................................................................................................................... 300 PRINCIPLES ............................................................................................................ 300 Urban Sub-System .................................................................................... 300 Multi-Purpose Resource ........................................................................... 300 Jurisdictional Boundaries ......................................................................... 301 Preventive Measures ................................................................................. 301 WATERSHED DEVELOPMENT ORDINANCE ................................................. 302 Purpose ................................................................................................. 302 Drainage Policies ...................................................................................... 302 REGIONAL AND LOCAL PLANNING ............................................................... 303 Stormwater Management Master Drainage Plans.................................... 303 Maintenance Access ................................................................................. 304 Water Quality Control .............................................................................. 306 Watershed Transfer of Storm Runoff ....................................................... 307 Acceptance of Existing Stormwater Drainage Systems........................... 308 TECHNICAL STANDARDS AND CRITERIA .................................................... 308 Drainage Design and Technical Criteria .................................................. 308 Drainage Construction Plans .................................................................... 308 Storm Runoff Determination .................................................................... 308 Drainage Facility Performance ................................................................. 309 Roadway Drainage Systems ..................................................................... 311 DRAINAGE IMPROVEMENT RESPONSIBILITY ............................................. 312 Developer Responsibility ......................................................................... 312 Property Owner Responsibility ................................................................ 313 City of Tulsa Responsibility ..................................................................... 313 Engineer Responsibility ............................................................................ 313 Stormwater Management Criteria Manual ii October 2019 Table of Contents CITY OF TULSA, OKLAHOMA DEVELOPMENT POLICY ..................................................................................... 313 Downstream Effects ................................................................................. 313 Downstream Drainage System Capacity .................................................. 313 Fee-In-Lieu of Onsite Detention .............................................................. 314 Site Drainage Plans ................................................................................... 314 LOT DRAINAGE .................................................................................................... 314 Lot Drainage for New Developments ...................................................... 315 Lot Drainage in Existing Subdivisions That Do Not Have a Detailed Drainage Plan and Infill Lot Development ............................... 315 Chapter 400 FLOODPLAIN MANAGEMENT POLICY AND STANDARDS...... 400 GOALS .................................................................................................................... 400 BACKGROUND ...................................................................................................... 400 National Flood Insurance Program (NFIP) .............................................. 400 FLOODPLAIN MAP AMENDMENTS AND REVISIONS ................................. 402 FEMA Floodplain Map Amendments and Revisions .............................. 403 Letter of Map Amendment (LOMA) ....................................................... 403 Letter of Map Revisions Based on Fill (LOMR-F) ................................. 403 Conditional Letter of Map Revision (CLOMR) ...................................... 403 Letter of Map Revision (LOMR) ............................................................. 404 City of Tulsa Regulatory Floodplain Map Amendments and Revisions ................................................................................................. 404 PERMITTING .......................................................................................................... 407 Watershed and Floodplain Development Permits .................................... 407 Chapter 500 DRAINAGE AND DETENTION REPORT REQUIREMENTS ...... 500 INTRODUCTION .................................................................................................... 500 FULL DRAINAGE & DETENTION REPORT REQUIREMENTS ..................... 500 Summary Statement ................................................................................. 500 Cover Letter .............................................................................................. 500 Report Contents ........................................................................................ 501 Required Report Exhibits ......................................................................... 504 Stormwater Management Criteria Manual iii October 2019 Table of Contents CITY OF TULSA, OKLAHOMA SINGLE LOT DRAINAGE RESIDENTIAL REQUIREMENTS ......................... 505 General Requirements .............................................................................. 506 Cover Letter .............................................................................................. 506 On-Site Drainage Plan
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