City of Chattanooga

Rainwater Management Guide (RMG)

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Compare each cited field to the official PDF before relying on it. What this means

Full RMG binder with addenda; text truncated at ~1M chars. Pipeline excerpt repair removed 1 unlocated citation(s).

Fields not found in document: design_criteria.design_storm_return_periods_years, design_criteria.required_hydrologic_hydraulic_software, document_metadata.state_code

Other manuals in Tennessee: City of Clarksville, City of Franklin, City of Knoxville, City of Memphis and Shelby County, City of Murfreesboro, Metropolitan Nashville and Davidson County, Tennessee, Tennessee Department of Environment and Conservation

Document Metadata

Jurisdiction level

City

“City of Chattanooga”
Cover

State

Not found in document

No evidence cited

Version / edition

December 1, 2014 edition with Addenda (Addendum 1 11/29/2017; Addendum 2 08/30/2019)

“Addendum 1 – 11/29/2017 / Addendum 2 – 08/30/2019”
TOC / Addenda

Adoption / effective date

2014-12-01

“December 1, 2014 edition”
Addendum 1

Last revised date

2019-11-15

“Addendum 2, Revision 1 – 11/15/2019”
TOC

Relationship to state manual

independent

“City RMG / NPDES MS4 Permit technical guidance”
Introduction

Design Criteria

Design storm return periods (years)

Not found in document

No evidence cited

Water quality volume method

Stay-On Volume (SOV) runoff reduction: entire City uses 1.0 inch of rainfall for SOV (required for ≥1 acre disturbance; may be based on impervious area). Performance standards also address water quality treatment and peak rate control; LID/green infrastructure preferred. Infeasibility pathways documented in RMG/addenda.

“entire City of Chattanooga will use 1.0" of rainfall for SOV”
Addendum 1

Peak flow calculation method(s)

Stay-On Volume (SOV) calculation, Stormwater management performance standards (Chapter 3), BMP Excel Workbook / calculation methodologies (Chapter 7), Peak rate control standards

“Stormwater Management Performance Standards”
Chapter 3

Hydrologic/hydraulic software

Not found in document

No evidence cited

Approved BMP categories

Runoff reduction / Stay-On Volume practices, Green infrastructure / LID BMPs, Manufactured treatment devices (per Addendum 2), Structural stormwater control measures

“Stay-On Volume (SOV) measures / stormwater management practices”
Addendum 1 / Chapter 5