Click here to view a fact sheet EPA released in November. This publication updates the public on EPA's Upper Columbia River Remedial Investigation/Feasibility Study, which extends from the U.S./Canadian border to Grand Coulee Dam. The fact sheet summarizes the status of the most recent studies being done to develop both human health and ecological risk assessments.
As you'll read, some studies are complete while others are in progress. No time line is given regarding when either a draft human health or ecological risk assessment will be available for public comment. Once all assessments and related work are done as part of these Remedial Investigation studies, which thus far have been underway since 2005, EPA will eventually evaluate various cleanup options and propose (to the degree necessary) a plan to address pollution. This would then lead to design and implementation of cleanup actions.