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Toxicity Identification/Reduction Evaluations (TIE/TRE)
A Chronic Fish WET Test |
When biomonitoring data reveal persistent toxicity, it is often necessary to conduct a toxicity reduction evaluation (TRE). The overall objective of a TRE is to identify and eliminate the source of the toxicity. The professionals at EnviroScience can custom design a program to meet your needs. We have decades of combined experience in this field, allowing us to be strong advocates for our clients when they are faced with complex regulatory challenges.
By nature, the TRE process must proceed in step-wise, iterative fashion. Information obtained by one technique must be verified and evaluated before determining the next course of action. For these reasons, EnviroScience's approach rarely set forth a fixed sequence of steps to be followed at the outset of a TRE project. Rather, we work with our clients to develop a conceptual plan for the TRE which accomplishes the following major tasks:
determine whether toxicity is consistently present. If so, determine a baseline for future studies;
thoroughly evaluate in-plant practices, processes, and chemical usage in an attempt to identify factors which influence toxicity in the facility discharge. Termed an operational assessment/chemical optimization study, this program identifies both potential problem areas and corrective measures;
identify the general class(es) of toxicant(s) present and then proceed to identify the specific toxicant(s) and source(s). Information gathered in the operational assessment is used to prioritize and minimize the laboratory portions of the study;
provide information, as needed, to support any necessary treatment or process changes.
Examining C.dubia |
By proceeding in a step-wise fashion we help our clients minimize expenditures on the laboratory analyses, which are often the most costly parts of these studies. Unlike many laboratories which bundle toxicity identification analyses, we use our clients knowledge of their facility and our extensive experience with a wide range of industrial and municipal plants to prioritize and select only those analyses which are most appropriate.
Please contact one of the EnviroScience professionals listed to the left to learn more about EnviroScience's innovative and cost-effective approaches to TIE/TRE studies.
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