Compliance & Testing

Required Testing: Yearly

  • Spill Catchment Basin test (fill, remote fill, Stage I), Double wall Spill Catchment Basin must be tested per manufacturer specifications or in accordance with PEI RP 1200.
  • Piping Precision Tightness test for Pressurized Piping equipped with:
    • Mechanical Line Leak Detector – Unless maintaining monthly piping release detection in accordance with COMAR 26.10.05.02D(2)(b)(ii).
    • Electronic Line Leak Detector – Unless electronic line leak detector is performing daily, weekly, and monthly test in accordance with COMAR 26.10.05.02D.(2)(b)(ii). Must maintain a record of monthly leak detector line test.
  • Automatic Tank Gauge System certification (includes functional test of sump sensors)
  • Line Leak Detector test (mechanical and electronic)
  • Cathodic Protection test for Metal Piping (including flex connectors)
  • Field installed Cathodic Protection test for Metal Tanks
    • For steel tanks that have had supplemental anodes or impressed current system installed

Required Testing: Every 2 Years

  • Piping Precision Tightness test for U.S. Suction
    • Unless maintaining monthly piping release detection in accordance with COMAR 26.10.05.02D.(2)(b)(ii)
  • Helium test for existing Gasoline USTs
    • Only when located in High Risk Groundwater Use Areas or Well Head Protection Areas

Required Testing: Every 3 Years

  • Factory installed Cathodic Protection test for Metal Tanks
  • Maryland Department of the Environment Compliance Inspection
  • Containment Sump test (tank top, vent, dispenser, piping transition, etc.)
    • Double wall Containment Sumps must be tested per manufacturer specifications or in accordance with PEI RP 1200
  • Overfill Prevention Equipment: due upon the installation or repair of overfill prevention equipment; and At least every 3 years after the most recent inspection and functional test was conducted.

Required Testing: Every 5 Years

  • Secondary Piping Tightness test
    • For double wall piping installed or replaced on or after January 12, 2009.
  • Tank Precision Tightness test
    • Only for tanks greater than 550 gallons and less than 2,000 gallons using manual tank gauging as primary method of release detection.
  • Impressed Current Cathodic Protection assessment
    • Only for UST systems with impressed current cathodic protection

per COMAR 26.10