Alabama

The various sites are all located in rural sections of Alabama. The sites all contained free product with varying degrees of soil and groundwater contamination. Most of the sites also contained both gasoline and diesel contaminants. Several sites had significant off-site contamination and sensitive receptors that required strict containment of pollutants.

Soil and groundwater investigations were conducted beginning in the early 1990s. Following review of the site investigations by the Alabama Department of Environmental Management (ADEM), pilot studies were conducted to establish viable remedial alternatives.

Mr. Lloyd was contacted by the Huntsville, Alabama office of QORE, Inc. to review site data and the pilot study results. From the data provided, Mr. Lloyd then designed several new remedial systems and made suggestions to revise the existing systems already in place. Due to the complexity of the fate and transport of contaminants, multiple technologies and combination of technologies were reviewed. Remedial technologies reviewed include air sparging, soil vapor extraction, granular activated carbon, dual phase extraction (DPE), monitored natural attenuation (MNA), and overexcavation along with free product recovery. The final systems installed were mounted on trailers to allow mobility since the sites continued their operations and usable space was a large concern.