Herst & Associates, Inc. provided on-site environmental sample collection and site characterization activities at a site with potential hazardous waste impacts to groundwater. Herst & Associates, Inc. incorporated innovative analytical testing techniques using a mobile laboratory to allow the collection of numerous samples in a short time frame, providing increased confidence in the determination of the nature and extent of impacts at significantly reduced costs compared to typical investigative techniques. Herst & Associates, Inc. successfully demonstrated that the extent of impacts was limited to a previously identified area.