What the pHudge is going on

Alison O'Connor, Ramboll
Allie Wyman-Feravich, Life Cycle Geo, LLC
Shannon Zahuranec, Life Cycle Geo, LLC

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.

 
May 15th, 1:00 PM May 15th, 1:30 PM

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.