Stormwater

The updated version of the Coastal Stormwater Supplement’s (CSS) Site Planning and Design Spreadsheet, Supplemental FAQ and User’s Guide documents for the CSS Site Planning and Design Spreadsheet can be found towards the middle of this page.

 

Stormwater discharges are generated by run-off from land and impervious areas such as paved streets, parking lots, and building rooftops during rainfall and snow events that often contain pollutants in quantities that could adversely affect water quality. Most stormwater discharges are considered point sources and require coverage by a National Pollutant Discharge Elimination System (NPDES) permit. The primary method to control stormwater discharges is through the use of best management practices (BMPs).

Under the NPDES stormwater program, operators of large, medium and regulated small municipal separate storm sewer systems (MS4s) require authorization to discharge pollutants under an NPDES permit. Chatham County and all of the municipalities within those boundaries fall under these guidelines for medium and large MS4 operators and are required to submit comprehensive permit applications and are issued individual permits.

The most significant portion of the application is the operator or municipal stormwater management program that would meet the standard of “reducing pollutants to the Maximum Extent Practicable (MEP).” Stormwater management programs for medium and large MS4s include measures to:
- Identify major outfalls and pollutant loadings;
- Detect and eliminate non-stormwater discharges to the system;
- Reduce pollutants in runoff from industrial, commercial, and residential areas; and
- Control stormwater discharges from new development and redevelopment areas.

More information on the permit application requirements and stormwater management programs for medium and large MS4s can be found from the following link: Storm Water Permit

STORMWATER POND MAINTENANCE BROCHURE

Check out this great resource and guidance brochure on what local municipalities will be looking for when inspecting local ponds and stormwater system structures for compliance. Stormwater System Maintenance Guidance

ADDITIONAL RESOURCES:

U.S. Environmental Protection Agency: EPA Stormwater Program – Office of Wastewater Management.

Download Powerpoint Presentation:
NPS Solutions.ppt

CSS G3 Training 12 08

The MPC in conjunction with the City of Savannah and Thomas and Hutton Engineering held a training session on February 23, 2011 to discuss proper stormwater detention maintenance. Please click here for a copy of the presentation.: City of Savannah Stormwater Pond Maintenance

BRIEF SUMMARY OF THE COASTAL STORMWATER SUPPLEMENT TO THE GEORGIA STORMWATER MANAGEMENT MANUAL

The Coastal Stormwater Supplement (CSS) adds to the multitude of information found in the Georgia Stormwater Management Manual (GSMM) http://www.georgiastormwater.com/ by providing specific guidance for Georgia’s coastal communities. Georgia’s coastal areas have high water tables and a large tidal range with unique terrestrial and marine habitats that are addressed within the new Coastal Supplement. The Coastal Stormwater Supplement can be used to shift the focus of Coastal Georgia’s post-construction stormwater management efforts onto the prevention, rather than the mitigation of the negative impacts of the land development process. Runoff reduction strategies are detailed as an approach to manage stormwater. Coastal High Priority Plant and Animal Species and Habitat Areas are provided and integrated from the State’s Comprehensive Wildlife Action Strategy,http://georgiawildlife.dnr.state.ga.us/
statewildlifeactionplan_conservation.aspx
and Coastal Rainfall Analysis, a Coastal Stormwater BMP Monitoring Protocol, and a model local government ordinance for Coastal Georgia are attached to the Supplement. The project also included guidance for coastal local governments on establishing a stormwater financing mechanism developed by the University of Georgia. Additionally, a user-friendly excel worksheet is also provided as a tool to ensure a project’s consistency with the Coastal Stormwater Supplement. The CSS provides Georgia’s coastal communities with comprehensive guidance on an integrated, green infrastructure-based approach to natural resource protection, stormwater management and site design that can be used to advance protection of coastal Georgia’s unique and vital natural resources as the region grows and develops.

COASTAL STORMWATER SUPPLEMENT TO THE GEORGIA STORMWATER MANUAL APRIL 2009 EDITION

To view details please click on file below:


Click here to view now

Georgia-CSS-Site-Planning-Design-Worksheet-12-9-13 – Printable

User Guide CSS Site Planning and Design Worksheet

CSS Site Planning and Design Spreadsheet FAQs

Please check back regularly to ensure you have the latest edition of the CSS SP&D Worksheet. Should you need assistance with any components of the CSS please contact us to obtain support from the CSS Technical Advisory Committee.

SUMMER 2013 CSS TRAINING

Please see the following attachments for copies of the materials presented on the Coastal Stormwater Supplement and the related Planning & Design Worksheet during the summer of 2013. These workshops were financed in part through a grant from the US EPA under the provisions of Section 319(h) of the Federal Water Pollution Control Act, as amended.

Introduction to the CSS and its History

Basics of Runoff Reduction

Georgia CSS BMP Specifications

CSS Site Planning and Design Worksheet Example

 

CSS TRAINING IN SAVANNAH AND BRUNSWICK

To view details please click on files below:

CSS Brunswick Attendee List

CSS Training Attendees Dec 10-11 08

Connecting Green Infrastructure & Stormwater Management

COASTAL STORMWATER SUPPLEMENT Integrates Green Growth Guidelines

Technical Guidance Overview

Vegetated Filters

Green Infrastructure Practices

Stormwater Ponds and Wetlands

Development in Coastal Georgia – The Watershed Impacts

Stormwater Management and Site Planning & Design Criteria

Effective Post-Construction Stormwater Management

Stormwater Management Planning & Design

Stormwater Mangement Plan

Infiltration Trenches

Bioretention

Courtney Monitoring Protocol

Courtney Regulatory Requirements

Section 6.8 credits

Section 6.8 design challenges

Section 7.6 BMP site challenges

ECONOMICS OF GREEN INFRASTRUCTURE-BASED BETTER SITE DESIGN

To view details please click on files below:

The Economics of Low-Impact Development: A Literature Review

Synthesis of Existing Cost Information for LID vs. Conventional Practices

http://www.epa.gov/owow/nps/lid/costs07/

STORMWATER UTILITY HANDBOOK: A STEP-BY-STEP GUIDE TO ESTABLISHING A UTILITY IN COASTAL GEORGIA

To view details please click on file below:


Click here to view now

COASTAL POST-CONSTRUCTION MODEL ORDINANCE

To view details please click on files below:

Model Post-Construction Stormwater Management Ordinance for the Coastal Nonpoint Source Management Area

STORMWATER UTILITY MANUAL TRAINING WORKSHOP

To view details please click on files below:

Development in Coastal Georgia – The Watershed Impacts

Georgia Stormwater Utility Handbook

Stormwater Management Programs for Local Governments

Utility Training Attendees

BIORETENTION WORKSHOP

To view details please click on files below:

The Georgia Stormwater Management Manual-Coastal Supplement

Breaking New Ground in Retail Development: A Case Study of Abercorn Common

Coastal Stormwater Management: The Bioretention Option

State of the knowledge: Stormwater Ponds in the Coastal Zone

TIDAL CREEK HABITATS SENTINELS OF COASTAL HEALTH

To view details please click on files below:

Click here to view now

HOW TO CONSERVE NATURAL RESOURCES ON CONSTRUCTION SITES

To view details please click on file below:

Click here to view now

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