Mr Appleby holds a bachelor degree in chemistry, and has over 35 years of experience in organic analytical chemistry, quality assurance, and laboratory management. He has been involved with the Contract Laboratory Program (CLP) for data review, data quality assessment, and laboratory evaluation, since 1994, and has served as CLP Organic and Non-Routine Analytical Services Program Manager since 2010. Mr Appleby authored the first set of National Functional Guidelines (NFG) for the review of polychlorinated dibenzo-dioxin and dibenzo furan data in 2010, and recently published updates of the NFG for volatile and semi-volatile organics, pesticides, and aroclors, all of which are currently posted on the Superfund CLP website. He has been presenting seminars on data validation since 2003.