Advancing JWI's water resource and mine hydrology capabilities, JWI has brought on board Andy Zdon as a Principal Hydrogeologist. Andy is a recognized expert in characterizing surface water and groundwater interactions, especially in the California desert region and groundwater modeling. With more than 24 years of experience, Andy is a California Professional Geologist, Certified Hydrogeologist and Certified Engineering Geologist, and an Arizona Registered Geologist. He is also a Certified Professional Geologist through the American Institute of Professional Geologists. He received a Bachelor of Science (B.Sc.) degree in geology from Northern Arizona University and has served on the Technical Advisory Committee for the California Board for Engineers, Land Surveyors and Geologists. Andy's diverse and unique expertise ranges from large-scale water resource investigations to mining geology/hydrogeology experience. Andy has managed complex groundwater modeling efforts for both aquifer storage and recovery studies as well as contaminant transport modeling. He has been retained as an expert in a wide variety of environmental pollution and water resource cases.