Location
Grand Rapids, Michigan
Start Date
15-5-2024 2:00 PM
End Date
15-5-2024 2:30 PM
Description
Aquifer Characterization Techniques to Evaluate Coal Combustion Residuals Sources Authors Mr. Vincent Buening - United States - TRC Mr. Wenbo Xie - United States - TRC Abstract Many of the constituents monitored in groundwater for CCR Rule compliance occur naturally in the environment. Sorting through natural and anthropogenic sources often requires additional in-depth analysis beyond the routine groundwater monitoring program. TRC’s practical application of several aquifer characterization tools and strategies can be used to evaluate potential sources of CCR constituents in groundwater. These strategies include the use of stable isotopes such as boron (δ11B), lithium (δ7Li), and strontium (δ87Sr); age dating techniques that rely on tritium (δ3H), deuterium (δ2H), and oxygen 18 (δ18O); and geochemical statistical tools in combination with the application of advanced statistical methods such as principal component analysis and linear discriminant analysis. These techniques can be used to identify influence from other sources and aid in the feasibility evaluation of remediation technologies in support of remedy selection. Conclusions drawn may include whether the aquifer remains unaffected by CCR or whether the final remedy selected will meet groundwater cleanup requirements. TRC’s approach promotes the use of multiple characterization techniques that coalesce into a cohesive conceptual site model framework that supports and strengthens compliance positions, helps guide relevant stakeholders to similar conclusions, and ultimately results in more defensible self-implemented decisions.
Document Type
Event
Aquifer Characterization Techniques to Evaluate Coal Combustion Residuals Sources
Grand Rapids, Michigan
Aquifer Characterization Techniques to Evaluate Coal Combustion Residuals Sources Authors Mr. Vincent Buening - United States - TRC Mr. Wenbo Xie - United States - TRC Abstract Many of the constituents monitored in groundwater for CCR Rule compliance occur naturally in the environment. Sorting through natural and anthropogenic sources often requires additional in-depth analysis beyond the routine groundwater monitoring program. TRC’s practical application of several aquifer characterization tools and strategies can be used to evaluate potential sources of CCR constituents in groundwater. These strategies include the use of stable isotopes such as boron (δ11B), lithium (δ7Li), and strontium (δ87Sr); age dating techniques that rely on tritium (δ3H), deuterium (δ2H), and oxygen 18 (δ18O); and geochemical statistical tools in combination with the application of advanced statistical methods such as principal component analysis and linear discriminant analysis. These techniques can be used to identify influence from other sources and aid in the feasibility evaluation of remediation technologies in support of remedy selection. Conclusions drawn may include whether the aquifer remains unaffected by CCR or whether the final remedy selected will meet groundwater cleanup requirements. TRC’s approach promotes the use of multiple characterization techniques that coalesce into a cohesive conceptual site model framework that supports and strengthens compliance positions, helps guide relevant stakeholders to similar conclusions, and ultimately results in more defensible self-implemented decisions.
