Hydrogeological contaminant investigations require a unique combination of professional training and experience. DAI Environmental, Inc. uses a team of hydrogeologists, geologists, and engineers to conduct subsurface investigations. Successful subsurface assessments have included studies of dense chlorinated solvents, petroleum products, other NAPLs, and heavy metals. DAI may use a combination of methods and procedures to evaluate the extent of contamination in the most expeditious and cost-effective manner.