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MS4 Annual Reports

To meet the requirements of the Clean Water Act and subsequent Virginia Pollutant Discharge Elimination System and Municipal Separate Storm Sewer System (MS4) permits, the following annual reports contain detailed information on the accomplishments of the county's comprehensive stormwater management program and the efforts of relevant organizations in:

  • Protecting property from damage;
  • Managing the quantity of stormwater runoff;
  • Monitoring and managing the quality of stormwater runoff; and
  • Educating and involving the residents and businesses of the county, not only in environmentally friendly ways to deal with stormwater, but also in its adverse effects on streams.

The reports are available in PDF format, which will require Adobe Reader to view.  Each is available in its entirety, with larger ones by chapter for ease of download. For more information on the county's MS4 Permit and Annual Reports, please contact the Stormwater Planning Division, 703-324-5500, TTY 711.

2007 MS4 Report (March 2008)

2006 MS4 Report (March 2007)

2005 MS4 Report (March 2006)

2004 MS4 and Stormwater Management Status Report (March 2005)

Complete Report

Foreword, Table of Contents, Introduction
Chapter 1 - Watershed Management Planning
Chapter 2 - Capital Improvement and Infrastructure Retrofit
Chapter 3 - Maintenance and Operation
Chapter 4 - Strategic Initiatives, Policy, Management, and Emergency Response
Chapter 5 - Monitoring and Assessment
Chapter 6 - Public Outreach and Education
Chapter 7 - Additional Permit Requirements, Summary, Acronym List, Index, and List of Appendices 

2003 MS4 and Stormwater Management Status Report (February 2004)

Complete Report

Table of Contents & Executive Summary
Part 1, Pages 1-3
Part 2, Pages 4-10
Part 3, Pages 11-13
Part 4, Pages 14
Part 5, Pages 15
Part 6, Pages 16-19
Part 7, Pages 20-24
Part 8, Pages 25-31
Part 9, Pages 32-35
Part 10, Page 36
Part 11, Pages 37-38
Part 12, Pages 39-45
Part 13, Pages 46-53
Part 14, Pages 54-61