Tim Parker is Principal Hydrogeologist, Parker Groundwater Management, California, specializing in groundwater resources management. His experience includes water policy analysis, groundwater management and monitoring, recharge & storage, and assessing potential impacts to groundwater from carbon sequestration and hydraulic fracturing. Tim serves GRA as Director and Legislative Chairman, CGC as Director, and National Ground Water Association as Scientist’s and Engineers Division Director. He is principal writer on Sustainability from the Ground Up, Groundwater Management in California, a Framework (ACWA 2011), and co-authored the books Potential Groundwater Quality Impacts Resulting from Geologic Carbon Sequestration (WRF 2009), and California Groundwater Management (GRA 2005).