Kentucky Underground Storage Tank (UST) Operator Certification Practice Test 2025 - Free UST Operator Practice Questions and Study Guide

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What is the acceptable minimum burial depth of cover required for non-metallic underground tanks in traffic areas?

2 feet of earth

3 feet of earth

The acceptable minimum burial depth of cover required for non-metallic underground tanks in traffic areas is 3 feet of earth. This requirement is in place to ensure the structural integrity and protection of the tank from surface loads caused by vehicular traffic. Non-metallic tanks, while resistant to corrosion, still require sufficient earth cover to mitigate risks associated with ground pressure and potential impacts.

Having a minimum cover of 3 feet helps to distribute the weight of vehicles driving over the area, reducing the likelihood of deformation or damage to the tank. Additionally, it serves to provide an adequate barrier against accidental surface disturbances or impacts that could compromise the tank's integrity. This standard helps to promote safety and prevent hazardous materials from leaking into the environment.

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4 feet of earth

5 feet of earth

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