Navigating the TMDL Process
Method Development for Addressing Narrative Criteria (WERF Report 01-WSM-1)
Published on 1. December 2003
106 pages
978-1-78040-406-6 (ISBN)
Description
Narrative water quality criteria are an integral component of States water quality standards but they pose special problems when incorporated into the TMDL process. The TMDL process is typically a quantitative activity, defining numeric allowable loads necessary to meet a numeric water quality objective. Narrative criteria confound development of quantitative TMDLs, due to the absence of these numeric criteria. The objective of this research was to improve the methods for addressing narrative water quality criteria in the TMDL process. The problems associated with narrative criteria in the TMDL process are known in general terms but, prior to this research, there has not been a thorough review of the use of narrative criteria in TMDLs nor broad guidance on how to address narrative criteria in the TMDL process. The approach taken for this research was to define the range of problems associated with all types of narrative criteria by means of a comprehensive review of 120 narrative TMDLs, and provide guiding principles to help address these problems.
More details
Series
Language
English
Place of publication
London
United Kingdom
Target group
College/higher education
Professional and scholarly
File size
1,73 MB
ISBN-13
978-1-78040-406-6 (9781780404066)
Copyright in bibliographic data and cover images is held by Nielsen Book Services Limited or by the publishers or by their respective licensors: all rights reserved.
Schweitzer Classification
Other editions
Additional editions
Paul L. Freedman
Navigating the TMDL Process
Book
12/2003
IWA Publishing
€166.66
Shipment within 3-4 weeks
Content
- Cover
- Copyright
- Acknowledgments
- Abstract and Benefits
- Table of Contents
- List of Tables
- List of Figures
- List of Acronyms
- Executive Summary
- Chapter 1.0: Introduction
- 1.1 Narrative Water Quality Criteria
- 1.2 303(d) Listing and Total Maximum Daily Loads (TMDLs)
- 1.3 Challenges of Addressing Narrative Criteria in the TMDL Process
- 1.3.1 Determination of Impairment
- 1.3.2 Problem Identification
- 1.3.3 Target Analysis
- 1.4 Research Intent
- Chapter 2.0: Review of Narrative Criteria TMDLs
- 2.1 Introduction
- 2.2 The Review Process
- 2.2.1 Preliminary Review
- 2.2.2 Compilation of Additional Narrative Criteria TMDLs
- 2.2.3 Structure of Narrative TMDL Review
- 2.3 Summary of Review Findings
- 2.4 Review Findings for Toxicological Impairments
- 2.4.1 Defining Toxicological Impairment
- 2.4.2 Determining Causes of Toxicological Impairment
- 2.4.3 Setting Toxicological TMDL Targets
- 2.5 Review Findings for Ecological Impairments
- 2.5.1 Defining Ecological Impairment
- 2.5.2 Determining Causes of Ecological Impairment
- 2.5.3 Setting Ecological TMDL Targets
- 2.6 Review Findings for Aesthetic Impairments
- 2.6.1 Defining Aesthetic Impairment
- 2.6.2 Determining Causes of Aesthetic Impairment
- 2.6.3 Setting Aesthetic TMDL Targets
- Chapter 3.0: Guiding Principles for Defining Impairment
- 3.1 Introduction
- 3.2 Challenges and Concerns
- 3.2.1 Over-Reliance on Site-Specific Judgment
- 3.2.2 Use of Surrogate Measures and/or Inappropriate Levels
- 3.2.3 Data Interpretation
- 3.2.4 Nuisance Thresholds for Aesthetic Impairment
- 3.3 Consistent Decision Process
- 3.3.1 Guiding Principles
- 3.3.2 Case Examples
- 3.4 Selection of Measures and Levels of Impairment
- 3.4.1 Guiding Principles
- 3.4.2 Case Example
- 3.5 Data Interpretation
- 3.5.1 Guiding Principles
- 3.5.2 Case Examples
- 3.6 Determining Aesthetic Impairment
- Chapter 4.0: Guiding Principles for Determining Causes of Impairment
- 4.1 Introduction
- 4.2 Challenges and Concerns
- 4.3 Listing Candidate Causes
- 4.3.1 Guiding Principles
- 4.3.2 Case Example
- 4.4 Analyzing the Evidence
- 4.5 Identifying Potential Causes
- 4.5.1 Guiding Principles
- 4.5.2 Case Examples
- Chapter 5.0: Guiding Principles for Setting TMDL Target Measures and Levels
- 5.1 Introduction
- 5.2 Challenges and Concerns
- 5.3 Selecting Target Measures
- 5.3.1 Guiding Principles
- 5.3.2 Case Example
- 5.4 Setting Target Levels
- 5.4.1 Guiding Principles
- 5.4.2 Case Example
- Chapter 6.0: Conclusion
- Appendix A: List of Reviewed TMDLs
- Appendix B: Checklist of Guiding Principles
- References
