Many states have programs that enable firms to deal with situations on a more flexible basis than they would under traditional regulatory enforcement. Participation is frequently voluntary and is often linked to the purchase or sale of a property. Most states also have programs that focus on specific sources of contamination such as leaking underground storage tanks (LUST), dry cleaner facilities, and agricultural chemicals. For the most part, these programs utilize an approach called risk-based corrective action. This approach enables the responsible party to account for site-specific conditions and potential impacts of a site on nearby wells, streams, and other potential environmental receptors. Hyde routinely assists companies with state compliance programs throughout the central United States. We specialize in quantifying the fate and effect of contaminants, and evaluating environmental risks by applying sound science and experience at site throughout the nation.