February 2023

Metal Leaching and Acid Rock Drainage

Status: Advanced registration is now closed. Please contact Alanna Reyse at [email protected] for more information. Thank you.
Date: Thursday, February 23, 2023
Time: 12:00 PM-1:00 PM: Group Webinar Registration
Location: Webinar
Presenter: Alexander Kaul, P.Geo.
Credit: Eligible for 1 CE Hour(s) of Informal Learning
Cost: Engineers and Geoscientists in the Resource Sector Division member: $15 + GST = $15.75

Engineers and Geoscientists BC registrant (Professional or EIT/GIT): $20 + GST = $21.00

Non-registrant of Engineers and Geoscientists BC: $25 + GST = $26.25 (Note: Non-registrants need to create an online account prior to registering for webinars. See below for more details.)

Group webinar presentation (for office environments): $45 + GST = $47.25

Students: $10 + GST = $10.50

Please note that all attendees must have an online account with Engineers and Geoscientists BC prior to registering for webinars. For non-registrants and first-time users, this will mean creating a new account. Once your account is created, please login and return to the event registration page to complete your registration.

Note: Division membership is free in 2022. We highly encourage attendees to become a member of the Division for discounts on webinars, participation in the Division LinkedIn group, and inclusion in monthly newsletters keeping members informed of upcoming events. More information about the Division can be found here: Engineers and Geoscientists in the Resource Sector Division
Contact: For registration inquiries please contact Victoria Stevens at [email protected].
As any rock is excavated, mined, or otherwise exposed to the elements, a silent environmental risk can potentially lurk beneath the surface - Metal Leaching (ML) and Acid Rock Drainage (ARD). This presentation is intended as an introduction to ML/ARD for practitioners that are new to this field of study and seek to gain a foundation of knowledge, and to direct further career development.

ML and ARD have been a major topic for industry, government and public in recent years. Contrary to popular believe, ML/ARD is not limited solely to the mining industry. ML/ARD has been identified as an environmental concern on a variety of projects, which require disturbance of rock. The effects of ML and ARD, which are not mutually dependent on each other, can be long-lasting and far-reaching and examples date back millennia.

To effectively predict the ML/ARD potential of rock, it is crucial to understand the underlying principles governing its formation and have a practical scope of work in place to characterize the potential. Without a clear geologic, mineralogical, and geochemical understating, ML/ARD effects can easily be overlooked with potentially catastrophic environmental and socio-economic consequences.

This presentation will aim to provide the audience with a practical and high-level overview of what the important key points are to consider in any ML/ARD study. The focus of the presentation will include the underlying geochemical and microbiological processes of ML/ARD and how these are identified through field observations and analytical testing requirements. This information will provide the audience with the knowledge necessary to properly scope and time studies to align with project schedules and requirements. Finally, this presentation will discuss the general prevention, management and mitigation philosophies currently utilized and what regulatory considerations should be included in ML/ARD studies.


Alexander Kaul, P.Geo.

Alexander Kaul, P.Geo., holds a degree in geology and is currently working as a Senior Environmental Geoscientist with the Major Mines Office of the Ministry of Energy, Mines and Low Carbon Innovation. His main area of expertise is geology and geochemistry. Alex is responsible for the review of metal leaching and acid rock drainage and geoscience information provided by major mines for regulatory permitting requirements. Alex has worked in the mineral exploration, mining and consulting industry for over a decade prior to joining the Public Service. Alex has worked with Golder Associated Ltd/WSP as a Geochemist for 9 years dealing with contaminated sites assessment, hydrogeologic baseline characterizations, and metal leaching and acid rock drainage assessments. Alex has extensive experience with civil construction, industrial and major mining projects.

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