Chapter 1: Introduction

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Adoption of this Manual

Information regarding the effective date of the manual. Any project that has completed the preliminary design phase, or approximately 50% of the full design, as of the effective date is not subjected to this new version of the Manual and should continue to follow the 2004 Manual guidelines. Any projected completed prior to the effective date should continue to meet the guidelines set by the 2004 Manual. Municipal regulations can be updated at any time, but should refer to the effective date or earlier.

Purpose of the Manual

Explanation of overarching goal of this new version of the Manual: providing guidance on the measures necessary to protect the water of Connecticut from the adverse impacts of stormwater runoff. Guidelines set in this Manual are applicable to post-construction stormwater controls for new development, redevelopment, and retrofits.

Revisions to the Manual

Summary and primary objectives of revisions to the 2004 Manual and 2011 LID appendix, including:

  • Updated information on structural stormwater BMPs
  • Improve consistency between this Manual and the CT Guidelines for Soil Erosion and Sediment Control
  • Improve consistency with the CT DEEP general stormwater permits
  • Incorporate impacts of climate change and resilient considerations
  • Enhance usability of the ManualĀ 

Applicability and Regulatory Basis of the Manual

While the Manual is not a set of legally required standards, the CT DEEP MS4 General Stormwater Permit does require updates to municipal regulation for all projects to follow guidelines established within this Manual.

Organization and Use of the Manual

The Manual is organized into 2 parts: Background (Chapters 1 - 3) and Design (Chapters 4 - 13). See the diagram below for a better understanding the flow of the Manual.

diagram of manual chapters