Environmental Impact Statement Support

Hydrogeologic expertise for projects that require an EIS or an EA


M&A has extensive experience investigating the hydrologic impacts — direct, indirect, and cumulative — to the quantity and quality of water resources. We typically work as part of a multidisciplinary team on Environmental Impact Statements (EIS) for projects that must comply with NEPA and, in California, CEQA requirements.  We prepare the water resource portions of EIS submittals using hydrologic models, field investigations, historical records review, and remote sensing to document surface water and groundwater conditions and evaluate potential project impacts. M&A also assists with the public input process by interfacing with federal, tribal, state, local, and agencies, as well as with special interest groups. Our experts deliver public presentations are clear, objective, and defensible, and are known for communicating complex concepts in a way that is understandable to a range of audiences.


  • Characterizing surface and groundwater resources at the site-specific and regional scales
  • Formulating a range of alternative actions
  • Evaluating impacts to water quality and quantity using numerical and analytical models
  • Designing methods for assessing impacts
  • Designing and implementing data-collection programs
  • Preparing reports, submittals, and responses to public comments