This document discusses producing legally defensible environmental data. It begins with an introduction to the author, Christina Hiegel, who has over 11 years of experience in the environmental field. The rest of the document outlines the six key steps to producing defensible data: define the problem and goals, plan the study, prepare for sample collection and analysis, execute the sample collection and analysis, review the results, and manage the data. It provides guidance on each step, emphasizing the importance of planning, proper sampling techniques, quality assurance protocols, data validation, and data management to ensure data defensibility.