California ICC UST Service Technician Practice Exam

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What percentage of tank filling requires testing when the tank is filled?

  1. 5%

  2. 10%

  3. 15%

  4. 20%

The correct answer is: 10%

The correct percentage of tank filling that requires testing when the tank is filled is 10%. This is in accordance with federal and state regulations that stipulate a certain percentage of the total tank fill volume must be monitored and tested for leaks. This testing is crucial to ensure that there are no breaches in the tank system that could lead to environmental contamination or hazards. Testing a specified percentage of the total tank filling helps manage risks efficiently and ensures compliance with safety standards. The 10% figure is derived from practices set by regulatory bodies to ensure thoroughness without overwhelming resources. The other percentages are not aligned with the established standards and practices for regulating tank fill testing, making them incorrect in this context. Understanding the standards for testing is vital for anyone involved with underground storage tanks, as it helps maintain operational safety and compliance with environmental regulations.

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