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TMDLs, or total maximum daily loads, are required under the Clean Water Act, Section 303(d), for waterbodies that do not attain water quality standards. The objective of this research was to review the existing TMDL process and to develop an improved design for TMDL development where improvements are needed.
This objective was accomplished through: (1) Identifying and verifying problems with the existing TMDL program; (2) Formulating a range of recommended improvement options on specific topics that address identified weaknesses; and (3) Providing case studies examples that highlight these recommended changes to improve the TMDL process.
The research team identified ten specific areas for improvement, based on a review of approved TMDLs, a survey of state programs, and an in-depth review of specific case study examples.
Each topic is addressed in a separate chapter of the report, with a discussion, recommendation of improved approaches where appropriate, and specific examples to help guide water quality professionals when developing or reviewing TMDLs.
Navigating the TMDL Process
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...
Management Practice for Drinking Water Pipelines: Synthesis Report
This report presents state-of-the-art literature and current practice review of management practices for drinking water pipelines. These practices focus on the pipe condition evaluation and...
Chemical Exposure and Effects in Freshwater Aquatic Species
To protect aquatic ecosystems from stresses induced by toxic chemicals, risk models must be developed, calibrated and verified for feral populations. Although risk models require good estimates of...
Application of a Dynamic Model to Assess Microbial Health Risks Associated with Beneficial Uses of Biosolids
Microbial risk assessment is a structured approach to estimating risks associated with environmental exposure to pathogens by using available environmental data.
In this report the...
Accounting for Toxicity Test Variability in Evaluating WET Test Results
Characterizes sources of WET test variability and evaluates existing and new methods that integrate variability into decision making. Will identify technically defensible methods to improve the...
Membrane Technology in Water Treatment in the Mediterranean Region
The complex dimensions of the Mediterranean freshwater resources, their fragility and their scarcity have been highlighted and have received considerable attention as a primary priority issue...
Water Management and Water Loss
Water Management and Water Loss contains a selection of papers and articles written by various internationally recognised specialists in the field of water loss reduction. The articles...
Southeast Asian Water Environment 4
This is the fourth volume in the series of books on the Southeast Asian water environment.
The most important articles presented at the Sixth and Seventh International Symposiums on...
Environmental History of Water
The World Water Development Report 2003 pointed out the extensive problem that: 'Sadly, the tragedy of the water crisis is not simply a result of lack of water but is, essentially, one of poor...