Skip Navigation Links
Training Exchange Logo
December 10, 2023
Current Training

By Course Title
By Location
By Date
By Training Partner
By Delivery Method

Course Catalog
By Course Title
By Training Partner
By Delivery Method


View Registrations/Transcripts
Edit Your Profile
Request Training

About Trainex
Contact Us

OLEM Training Coordination Team
Locate Team Members
Regional/State Training

Other Training Resources
Other U.S. Government
Intermediate Predicting the Toxicity of Metals to Aquatic Organisms: An Introduction to the Biotic Ligand Model
Hosted by U.S. EPA - Region 10


Water quality criteria (WQC) for metals have been developed to protect the integrity of aquatic systems. However, tests used to develop WQC were performed in laboratory waters that often are not representative of natural waters. Water effect ratio (WER) tests account for the effects of substances that alter the toxicity of metals in natural waters but can be costly and time consuming.

The biotic ligand model (BLM), a computationally efficient alternative to conducting WER tests, has ...  [click for more]

For general information contact Diane Ruthruff by telephone at 206-553-5139 or via e-mail at

 Upcoming Events

 No upcoming events.

Previous Events (click to view/hide)
Bullet  Seattle, WA
  February 26, 2009 - February 26, 2009
Logo for website