Underground Storage Tank Closures

Duncklee & Dunham has conducted hundreds of projects associated with UST systems on publicly and privately owned sites in North Carolina, Kentucky, Maryland, West Virginia, Delaware, Washington, Tennessee, Ohio, and Virginia.  Mr. Duncklee began conducting UST projects before the UST regulations were effective in December 1988. Mr. Dunham has performed UST services across an area that encompasses most of the southeastern United States.  Our senior staff has extensive experience working with staff in the regional offices of NCDEQ, which oversee assessment and remediation at UST sites in North Carolina. 

Our scope of services has included: 

  • Site Checks,
  • oversight of UST system leak testing and tightness tests,
  • oversight of replacement or upgrades to UST and dispenser systems,
  • oversight of UST closures,
  • performance of Phase I and II Limited Site Assessments and Comprehensive Site Assessments,
  • management of free product – aggressive fluid-vapor recovery and mobile multi-phase extraction events,
  • development of Corrective Action Plans,
  • pilot testing of remediation-system equipment, design of treatment systems, and oversight of the installation of treatment systems,
  • arrange connection of point-of-entry systems for impacted property owners to public water supply,
  • acquisition of air and NPDES permits associated with operation of remedial systems, and
  • as-needed technical support of public participation for corrective action planning and implementation at leaking UST sites. 

Duncklee & Dunham has worked with regulated and unregulated USTs that range in size from 280- and 550-gallon tanks common at residences and small commercial buildings to 10,000- and 20,000-gallon tanks common at commercial and industrial facilities. Commonly, we use geophysical methods to locate USTs and underground fuel lines when the actual location of the UST system is not known, which is not unusual in commercial transactions for sites long in operation.