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Environmental Guidelines

Guidelines for Environmental Management of Development in Montgomery County, January 2000

Table of Contents

Environment Guidelines cover

Details of Publication (pdf, 357KB)

Purpose (pdf, 56KB)

Introduction (pdf, 73KB)

Guidelines for Development (pdf, 410KB)
Stream Valley Protection
Wetland and Floodplain Protection
Forest and Tree Conservation"Unsafe and Unsuitable Land Protection
Danger Reach/Dam Break
Threatened and Endangered Species and Species in Need of Conservation
Site Imperviousness Considerations

Natural Resources Inventory (pdf, 310KB)
Streams and Floodplains
Stream Buffers
Topography
Wetlands
Forest and Trees
Unsafe and Unsuitable Land
Danger Reach/Dam Break
Threatened and Endangered Species and Species in Need of Conservation

Special Protection Areas (pdf, 281KB)
Goals and Objectives for Special Protection Areas
Special Protection Area Wetland Buffers
Expanded and Accelerated Forest Conservation Opportunities
Imperviousness Limitations

Implementation (pdf, 193KB)
Development Agreements
Conservation Easements
Waivers to Base Zone Standards and Specifications
Exceptions to the Guidelines

The Patuxent River Watershed Primary Management Area (PMA) (pdf, 331KB)
Background and Purpose
Introduction: The Patuxent River
The Patuxent River Policy Plan
The Montgomery County Primary Management Area (PMA)
Septic Field Requirements Within the PMA

Glossary of Terms (pdf, 125KB)

Appendices (pdf, 285KB)

  1. State Designated Water Uses - List of Map for Montgomery County Streams
  2. Stream Order Determination
  3. Erodible Soils List
  4. State Patuxent River Policy Plan Recommendations

References (pdf, 96KB)

List of Tables

  1. Recommended Minimum Stream Buffer Widths
  2. Recommended Buffers for Wetlands, Springs, and Seeps Outside SPAs
  3. Recommended Buffers for Wetlands, Springs, and Seeps in Special Protection Areas
  4. Criteria for Determining Primary Management Area Applicability
  5. Recommended Environmentally Sensitive Land Features to be Included in the Stream Buffer Area
  6. Possible Best Management Practices (BMPs)

List of Figures

  1. Natural Resources Inventory
  2. Stream Buffer Determination for a Use I Stream Using Steep Slopes
  3. Hypothetical Subdivision with Stream Buffer for a Use I Stream
  4. Illustration of Stream Buffers in a Use III Watershed with Wetlands
  5. Illustration of Stream Buffers in a Use IV Watershed with Wetlands
  6. Sample Calculations of Impervious Areas
  7. Special Protection Areas
  8. Illustration of the Patuxent River Primary Management Area
  9. Upper Patuxent River Basin and Hawlings River Subbasin
  10. Illustration of the Patuxent River Primary Management Area
  11. State Water Use Designations for Montgomery County
  12. Stream Order Determination