Little Sand Island Subsurface Investigation

Thompson Engineering was hired by the Alabama State Port Authority to evaluate soil conditions of an island used to train the Coast Guard and firefighters on how to respond to petroleum and ship fires. The ASPA wanted to evaluate recognized environmental conditions (RECs), or hazardous substances, on the island, which also served as a dredged material disposal facility.

 

Thompson Engineering’s field activities included the collection of soil and groundwater samples from hand auger borings and temporary well installations. Sample locations were selected to provide data that would be representative of site-wide conditions. Soil and groundwater results for volatiles, semi-volatiles, pesticides, herbicides, and Polychlorinated biphenyls (PCBs) were not detect for the sample parameters. Soil analytical results identified detectable concentrations of inorganic contaminants, arsenic, chromium, copper, lead, mercury and zinc; however, none were above regulatory screening levels. Zinc was the only inorganic detected in groundwater; however, it was less than the regulatory screening level.

 

Based on the laboratory analyses and field observations, the soil and groundwater testing did not reveal any contaminants of concern. Since the area is zoned heavy industrial, potential environmental concerns associated with the soil and groundwater analytical findings were considered minimal or non-existent.

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client

ALABAMA STATE PORT AUTHORITY

location

MOBILE, ALABAMA

market

INDUSTRIAL

Service Specialties

  • CIVIL
  • STRUCTURAL
  • GEOTECHNICAL
  • CONSTRUCTION MANAGEMENT
  • CONSTRUCTION SURVEYING
  • DRILLING
  • LABORATORY TESTING
  • CONSTRUCTION INSPECTION & MATERIALS TESTING

Thompson Engineering