Effective strategies for characterizing subsurface contamination

Groundwater can be impacted by industrial or naturally occurring contaminants, and M&A has decades of experience characterizing this contamination at federal- and state-led Superfund sites, mines, and other locations. Our expertise includes working with arsenic, chromium, industrial solvents, PFCs, 1,4-dioxane, fuel hydrocarbons, coal combustion residuals, metals, perchlorate, and other contaminants. M&A professionals specialize in developing models to project contaminant behavior in complex hydrogeologic environments. Our work has supported successful negotiations between potentially responsible parties and regulatory agencies.


  • Characterizing the occurrence and nature of contaminants
  • Characterizing vadose zone and aquifer conditions
  • Identifying and evaluating impacts from contaminant source areas
  • Sampling groundwater, soil vapor, and soil in accordance with regulatory protocols
  • Assessing vapor intrusion risks
  • Using groundwater flow and transport models to project contaminant migration, attenuation, and cleanup in soil and groundwater
  • Preparing plans–such as monitoring, quality assurance, and health and safety–and reports–such as preliminary investigation, site characterization, and remedial investigation–to meet regulatory requirements

To learn more, contact Juliet McKenna at 520.881.4912 or in California, Lisa Porta at 916.661.8389