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UST SERVICES

Johnson County:  Underground Storage Tank (UST) removal, closure and on-site management at a high security U.S. Air Force Base.  Federal contracts were secured, health and safety plans were developed and removal of UST’s and backfill occurred without disrupting the daily operation of the Air Force Base.

Polk County:  Site Characterization and Risk Assessment of former Aboveground Storage Tank (AST) bulk plant.  Soil borings were advanced, samples collected and monitoring wells were installed to collect groundwater samples.  Current and future use of property and surrounding properties were evaluated for potential exposure to the environmental impact found from the sample results and a No Further Action Letter was requested from the Missouri Department of Natural Resources.

Statewide:  Performed over 50 “sufficiently impervious” evaluations across the State.  This engineering evaluation is required by the Missouri Department of Agriculture for AST secondary containment systems that are made of earthen materials or other materials that may need an engineering report to determine if the system can be judged “sufficiently impervious” for the material being stored.  Gredell Engineering has developed a report format that addresses every concern identified in both the Missouri Department of Agriculture regulations and the Steel Tank Institute definition of “sufficiently impervious” to fulfill the needs of our clients and satisfy the regulatory authority.