Inoperative 121 - 365 Days
Any impressed current system that is determined to have been inoperative for a period greater than 121 days but less than 365 days must comply with the following requirements in addition to those listed previously:
A precision tightness test must be performed by a certified tank system tightness tester on the tank system within 15- days of discovery. Test results report (see COMM report form ERS—10785) must include the beginning and end times of the test, as well as the date of the test. A copy of the test results must be maintained at the UST site.