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Pipe Scale Analyses for CCT Evaluation - Cincinnati
Citation:
DeSantis, Mike. Pipe Scale Analyses for CCT Evaluation - Cincinnati. To be Presented at EPA 18th Annual Drinking Water Workshop, NA, Virtual, August 30 - September 02, 2021.
Impact/Purpose:
The analysis of the surface of extracted lead service lines (LSLs) using an array of analytical techniques can accurately identify the solid phases on the pipe surfaces, and thus give insight into the real-world functioning chemical mechanisms that govern solubility and metal release. This presentation describes the steps taken by US EPA’s ORD to obtain scale samples, prepare them for analysis, and the type of information that can be collected from the various analytical techniques, in order to assist in the decision-making process for state drinking water regulators, small-systems operators, and others. It also includes limitations in both the methodology and interpretation of resulting data.
Description:
The analysis of the surface of extracted lead service lines (LSLs) using an array of analytical techniques can accurately identify the solid phases on the pipe surfaces, and thus give insight into the real-world functioning chemical mechanisms that govern solubility and metal release. This presentation describes the steps taken by US EPA’s ORD to obtain scale samples, prepare them for analysis, and the type of information that can be collected from the various analytical techniques, in order to assist in the decision-making process for state drinking water regulators, small-systems operators, and others. It also includes limitations in both the methodology and interpretation of resulting data.