What must be done if a tank is found to be leaking according to DEQ requirements?

When a tank is found to be leaking, the immediate response required is to pump out the contents of the tank to prevent further spillage and environmental contamination. This action is critical not only to protect the surrounding environment but also to minimize potential safety hazards, such as fire risks or exposure to harmful substances. By emptying the tank, you also help facilitate any necessary repairs or assessments, ensuring that the issue can be addressed properly.

The requirement to pump out the tank aligns with standard operational procedures set forth by regulatory bodies like the Department of Environmental Quality (DEQ) to minimize risks associated with leaks. Promptly removing the contents allows for a more accurate evaluation of the extent of the leak and prepares the site for the next steps in the remediation or repair process.

The other options involve actions that do not directly address the immediate risks posed by the leaking tank. Filling the tank with water does not solve the problem and could potentially create additional hazards. A technical investigation, while necessary eventually, would follow the urgent need to secure the site and prevent further leakage. Sealing off the site permanently is a drastic measure that is not typically aligned with best practices for addressing leaks, as it may prevent recovery or remediation efforts.