The Environmental Protection Agency issued its Final Plan for Study of Risks Posed to Drinking Water by Hydraulic Fracturing November 3. The study plan will be organized around the water life cycle for the oil and gas drilling process of fracking, which consists of water acquisition, chemical mixing, well injection, flowback, produced water, wastewater treatment, and waste disposal. The study will rely on existing data, retrospective case studies where contamination has occurred, prospective case studies where fracturing is planned, computer modeling, laboratory studies, and toxicological assessments.