On-Demand Webinars

ARSENIC IN GROUND WATER: Part 1:
Arsenic Geochemistry: Demystifying the Complexities and "Conventional Wisdom"

This 90-minute webinar addresses arsenic geochemistry, occurrence and mobility in ground water. Part 1 of this 2-part series focuses on biogeochemical conditions that cause solid-phase arsenic to become dissolved or mobile in groundwater systems. Part 1 of this 2-part series reinforces key elements of arsenic geochemistry, presenting background information sufficient to demistify common, but complex, mobility and transport issues. This approach demystifies topics we hold as "conventional wisdom".

Despite recent research on this subject, the complex literature on the toxicity and mobility of arsenic in groundwater is not well understood. For example, arsenic-rich sulfide minerals can release soluble arsenic to groundwater under oxidizing conditions. In contrast, arsenic sorbed to, or incorporated into, the mineral structure of metal-(hydr)oxide minerals are a potential source of arsenic to groundwater in reducing environments. Geochemical conditions may be temporally and spatially variable within a hydrogeologic system, impacting arsenic mobility and affecting the distribution of arsenic in groundwater and in wells.

This series of webinars is designed for professionals working in the fields of environmental consulting, site remediation, groundwater investigations, water quality issues, and brown fields developments. Regulators, consultants, engineers and hydrogeologists will appreciate the real-world examples and complex conditions that are characterized and explained with interpretations of familiar types of data and basic geochemical principles.