ERC has provided water resource and environmental services to Newmont Mining Corporation at their eight Nevada sites. At all locations, accurate quantification of water requirements and needed storage capacity is paramount to efficient and safe operations. Climatological conditions have been quantified to allow the mines to understand both short-term and multi-month and year weather conditions that can impact water management. Probabilistic water balance modeling has been completed to predict operational variability at tailings storage facilities, heap leaches and operations that have multiple interlinked facilities. ERC’s stochastic models have been used for project planning, permitting, design and closure scenarios. We have been involved in overall water management of facilities including estimates of fresh water requirements and design of diversion channels and sediment control measures. ERC has also provided ecological planning and design services for heap cover/closure design, revegetation planning and landscape-based closure reclamation.