Herst & Associates, Inc. assessed the nature and extent of impacts to groundwater at a Florida site, and developed a statistical method for determining cleanup objectives. In addition, Herst & Associates, Inc. created an innovative remedial system using aerobic enhancement to augment in-situ bioremediation rates, with the flexibility to allow future system modifications at very little cost. The simplicity of the remedial design allowed the client to utilize its own on-site personnel for system installation.