Location
Grand Rapids, Michigan
Start Date
15-5-2024 1:00 PM
End Date
15-5-2024 1:30 PM
Description
What the pHudge is Going On: Statistical and Geochemical Techniques for pH Alternative Source Demonstrations Authors Dr. Alison O'Connor - United States - Ramboll Dr. Allie Wyman-Feravich - United States - Life Cycle Geo, LLC Ms. Shannon Zahuranec - United States - Life Cycle Geo, LLC Abstract Regulation of wider lists of parameters which may trigger corrective action activities for coal combustion residuals units puts increasing weight on the importance of robust alternative source demonstrations (ASDs). Exceedances of pH, whether above or below a groundwater protection standard range, can be particularly challenging to attribute to alternative sources. We present the use of multivariate statistical methods and geochemical approaches to inform pH ASDs for three units in conjunction with a multiple lines-of-evidence approach. The pH exceedances at these units were attributed to iron reactions in two ASDs and a peat point source in the third.
Document Type
Presentation
What the pHudge is going on
Grand Rapids, Michigan
What the pHudge is Going On: Statistical and Geochemical Techniques for pH Alternative Source Demonstrations Authors Dr. Alison O'Connor - United States - Ramboll Dr. Allie Wyman-Feravich - United States - Life Cycle Geo, LLC Ms. Shannon Zahuranec - United States - Life Cycle Geo, LLC Abstract Regulation of wider lists of parameters which may trigger corrective action activities for coal combustion residuals units puts increasing weight on the importance of robust alternative source demonstrations (ASDs). Exceedances of pH, whether above or below a groundwater protection standard range, can be particularly challenging to attribute to alternative sources. We present the use of multivariate statistical methods and geochemical approaches to inform pH ASDs for three units in conjunction with a multiple lines-of-evidence approach. The pH exceedances at these units were attributed to iron reactions in two ASDs and a peat point source in the third.
