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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...
Water Quality Indicators: Nutrient Impacts on Chlorophyll or Algae Species Composition
The researchers have developed a methodological framework that aims to provide a predictive approach to water quality criteria selection.
The basic constituents of the proposed methodology...
State of the Science: Review of Quantitative Tools to Determine Wastewater Soil Treatment Unit Performance
The literature review described in this report is part of a larger research project to assess STU performance with respect to treatment of important wastewater constituents. The overall goal of...
Trace Organic Compounds and Implications for Wastewater Treatment: Technical Brief
This Technical Brief has been prepared in response to concerns over the presence of trace organic compounds (TOrC) in wastewater, water supplies, and the receiving environment (Associated Press,...
Development of a Microbial Fuel Cell for Sustainable Wastewater Treatment
Microbial Fuel Cells (MiFCs) are a promising renewable energy technology, but suffer from low power densities which hinder their practical applicability. In this work, flame deposited, carbon...
Advanced Tools and Models to Improve River Basin Management in Europe in the Context of Climate Change
Advanced Tools and Models to Improve River Basin Management in Europe in the Context of Climate Change - AquaTerra has developed from an integrated project of the 6th EU...
Nature for Water: A Series of Utility Spotlights
By 2025, two thirds of the world’s population will be living in water stressed conditions. Meanwhile, the degradation of water ecosystems is occurring at alarming rates. Water utilities and water...
