Kootenay Boundary presents GeoEnviro Pro Webinar: Bioavailability 101 for Site Investigators
Friday, Mar. 29 at 11:00 am PST/12:00 MST
Jeff Rees, P.Ag. of Kootenay Boundary will show BCIA members the webinar Bioavailability 101 for Site Investigators. This webinar presented by Beth Powers is part of the GeoEnviroPro webinar library now available to BCIA members. Jeff will lead a short online discussion following the webinar.
With an increasing number of sites going to risk assessment, it is important that site investigators understand how a risk assessor will bridge off their data to understand and describe risks. Most regulatory standards assume that the total amount (i.e., 100%) of a contaminant measurable in environmental media is “bioavailable”. Broadly speaking, the term “bioavailability” is used to describe the fraction or percentage of a contaminant that is taken up by an organism that is actually absorbed and in systemic circulation. The extent to which a contaminant can be taken up by an organism is related to the adverse response, or risk.
This talk will discuss how people and critters “see” those concentrations that you measure in various environmental media. For both humans and ecological receptors, the common measures of bioavailability will be reviewed for various environmental media. Some measures that contribute to understanding bioavailability are simple (e.g., measuring pH and alkalinity) whereas others are contaminant- and situation-specific (e.g., physiologically based extraction technique, biotic ligand model). Participants will be encouraged to talk to risk assessors early in the process, so that measures of bioavailability can be selected and made at the appropriate time to streamline the risk management process.
Beth Power, a Partner in Azimuth, has been an environmental consultant for over 27 years – her practice falls into three main areas: ecological risk assessment, contaminated sediments and science policy/risk communication. Beth tends to work at the interface between owners, developers, the regulatory community, engineers, lawyers and other professions. She is trained in design and facilitation of group processes (e.g., meetings, workshops). Beth has developed and applied ecological risk assessment frameworks in a variety of settings, such as watersheds, mines, oil and gas, ports and harbours, brownfields, and for risk ranking. Beth thrives on supporting clients to address complex, multi-party problems.
To participate, please register (below) and go to the BCIA Adobe Connect link to join the webinar presentation and discussion. Please sign in at about 5 minutes prior. Go to the Adobe Connect pre-meeting test to check that your software is up to date.
In order to view the full library, BCIA members are encouraged to also complete the Request for Access to the GeoEnviro Pro webinars. (Please allow one to two weeks for confirmation of access)
Other featured GeoEnviro Pro webinars in the discussion series. For information on webinars, go to https://geoenviropro.com/gprotalks/
- The Quality of Chemical Data - April 26 - 11:00 am PST/12:00 MST