William M. Greenslade, P.E., R.G.

Principal Hydrogeologist

William M. Greenslade, P.E., R.G.

M.S., 1967 Hydrology, MacKay School of Mines, University of Nevada, Reno
B.S., 1965 Geological Engineering, MacKay School of Mines, University of Nevada, Reno


Engineer (Geological) – Arizona (10313)
Geologist – Arizona (9741), California (3430)

Years in Profession

Years with Firm


Bill has extensive experience in the performance and management of earth science and environmental projects throughout Arizona and the southwest. A Professional Engineer and Registered Geologist, Bill completed six years of service as Geologist on the Arizona State Board of Technical Registration. His technical professional accomplishments include geologic and hydrologic characterization of ground and surface water flow systems, design of water supply and recharge and recovery wells, analysis of contaminant migration and the development of remedial plans for contaminated soil and groundwater. He has conducted surface water and groundwater studies for water supply development, flood control, dewatering and water quality management. Bill understands the requirements of the Groundwater Management Act and is familiar with the Arizona Department of Water Resources (ADWR) rules and regulations.

Bill is well-versed in Arizona Department of Environmental Quality regulations and various federal agencies including the U.S. Environmental Protection Agency. He has conducted investigations for four Superfund sites in Arizona (19th Avenue Landfill, Motorola 52nd St., Unidynamics Goodyear, and Tucson International Airport). He has coordinated and directed very large projects involving project teams comprised of geologists, hydrologists, biologists, ecologists, engineers, meteorologists, and land-use experts. He has directed and participated in more than 50 comprehensive geological and hydrological investigations at 18 nuclear power plant sites including the evaluation of the rate, direction and quantity of groundwater movement and the potential for transport of contaminants through aquifer systems.

nathan3Bill has participated in numerous mining related projects. These projects involve every aspect of mining including environmental compliance, mine dewatering, and design of storm water diversion and leachate collection systems for mines in Arizona and around the world.

Professional Affiliations/Certifications

  • American Institute of Professional Geologists (CPG-2505)
  • American Institute of Hydrology (PH – 185)
  • Former Geologist, Arizona State Board of Technical Registration
  • National Ground Water Association
  • Arizona Hydrological Society