As of 1998, ______ USTs were required to have some form of corrosion protection.

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Multiple Choice

As of 1998, ______ USTs were required to have some form of corrosion protection.

Explanation:
Steel tanks buried underground are especially vulnerable to corrosion from moisture and soil chemicals. To prevent leaks that can contaminate soil and groundwater, regulations require some form of corrosion protection for steel USTs, such as protective coatings or cathodic protection. Other materials like fiberglass or concrete are not subject to the same ferrous corrosion issue, and aluminum USTs are far less common, so the protection rule focused on steel. That’s why steel is the correct choice.

Steel tanks buried underground are especially vulnerable to corrosion from moisture and soil chemicals. To prevent leaks that can contaminate soil and groundwater, regulations require some form of corrosion protection for steel USTs, such as protective coatings or cathodic protection. Other materials like fiberglass or concrete are not subject to the same ferrous corrosion issue, and aluminum USTs are far less common, so the protection rule focused on steel. That’s why steel is the correct choice.

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