Ms. Linda Ta is a Project Manager/Chemist at Laboratory Data Consultants, Inc. She has over 5 years combined environmental laboratory and data validation experience. Her experience includes performance of data validation for GC, HPLC, GC/MS, and HRGC/HRMS methods for Level II and III. Ms. Ta assists the other project managers through project set-up, validation, report review, and writing project data quality assessment reports. She is also in training to perform ERPIMS database tasks. She is the administrative support specialist for LDC Advantage secure data sharing portal where she assists with project and client set-up.
PFAS Data Validation: A Technical Perspective
Over the past 30 years, the Environmental Protection Agency (EPA) and the Department of Defense (DoD) with on-going research and investigations have identified a variety of emerging contaminants; each presenting a unique set of challenges and impacts. A current significant group of contaminants that have been identified are Per- and Polyfluoroalkyl Substances (PFASs). As testing for these contaminants expands using EPA Method 537 and modifications of this method, laboratories have been confronted with developing applicable analytical procedures to produce high quality data. Data validation has become a critical component of the EPA and DoD data quality process to assure the quality of the PFAS results. In the evolution of data validation, several validation documents have been produced, including the EPA National Functional Guidelines (NFGs) developed for the EPA Contract Laboratory Program (CLP) and the DoD General Data Validation Guidelines. This presentation will highlight the current status and process for data validation of PFAS methods and results relative to these guidelines. Additionally, it will provide a perspective on the path moving forward in PFAS data validation and how it relates to the DoD/DOE QSM 5.2 and the DoD General Data Validation Guidelines. We will walk through critical elements in the DoD/DOE QSM 5.2 document and how DoD data validation guidance specific to PFAS analyses will foster consistency in validation and reporting of PFAS data for DoD projects.