• Certain actions are required as part of the walkthrough inspection for tank release detection and piping release detection every 30 days and annually.

For tank release detection: As part of the walkthrough inspection requirement, at least every 30 days:

• Check to make sure the release detection equipment is operating with no alarms or other unusual operating conditions present; and
• Ensure records of release detection testing are reviewed and current.

Annually:

• Check hand-held release detection equipment such as tank gauge sticks and groundwater bailers for operability and serviceability; and
• Test operability of mechanical and electronic release detection equipment such as automatic tank gauges, probes, and sensors, and make sure they are working properly.

For piping release detection: As part of the walkthrough inspection requirement and at least every 30 days:

• Check to make sure the devices being used are automatically shut off or restrict flow of product or triggers an alarm to indicate a leak are operating with no alarms or other unusual operating conditions present; and
• Ensure records of testing these devices are reviewed and current.

Annually:

• Visually check containment sumps with interstitial monitoring for damage, leaks to the containment area, or releases to the environment;
• Check double-walled sumps with interstitial monitoring for a leak in the interstitial area.

Owners and operators must also annually test operability and determine devices they are using to automatically shut off or restrict flow or trigger an alarm. To indicate a leak in the piping, meet the three gallons per hour at 10 pounds per square inch line pressure within one hour performance standard, by simulating a leak. Operability of mechanical and electronic components such as suction pumps of suction systems must also be tested annually to ensure they are operating as required.