A consultant’s technical and scientific expertise can only be effective at a contaminated site if the work is carefully and strategically managed throughout the life of the project. Managers on behalf of both the client and consultant must have the capability to identify the potential environmental liabilities, define and adopt strategies to address the risks, and focus the investigation and remedial work on the most important elements. It is vital that the client authorize sufficient monetary support to ensure that the data collected are adequate, technically defensible, and presented in a well-written and easily-understood report. The consultant must ensure that the investigation expenditures are focused on only the identified risks and then presents the data in a report that addresses these risks. Long experience in providing expert witness testimony and the review of thousands of consultant reports for contaminated sites indicates that the adoption of an effective project strategy, collection of an adequate and well-defined data base, and the installation of an effective remedial system will lead to an overall lower project cost, efficient site remediation, and fairer resolution during litigation.