In 2011, the United States Environmental Protection Agency (EPA) initiated its Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources. EPA’s intent is to study the potential impacts of hydraulic fracturing on drinking water resources, if any. EPA also wants to identify the driving factors that may affect the severity and frequency of drinking water resource impacts. EPA has designed the scope of the research around five stages of the hydraulic fracturing water cycle. Each stage of the cycle is associated with a primary research question: 1. Water Acquisition: What are the possible drinking water resource impacts of large volume water withdrawals from ground and surface waters? 2. Chemical Mixing: What are the possible drinking water resource impacts of hydraulic fracturing fluid surface spills on or near well pads? 3. Well Injection: What are the possible drinking water resource impacts of the injection and fracturing process?…