Which of the following is not listed as a required component or practice in the UST guidelines?

• A. Line leak detector
• B. Gauge stick measurement to the nearest one-eighth inch
• C. Emergency shutoff valve
• D. UST operator training

Answer: (C)

The guidelines emphasize detecting leaks, accurate monitoring, and trained personnel. A line leak detector is required to monitor underground piping for leaks, so leaks are caught quickly. Gauging the tank with a gauge stick to the nearest one-eighth inch supports precise measurement of stored product and helps identify losses beyond expected variance. Operator training ensures those responsible understand proper monitoring, maintenance, and response procedures. An emergency shutoff valve, while potentially useful, is not listed as a universal required component or practice in these guidelines. That’s why the option describing an emergency shutoff valve is the one not required by the guidelines.