How many soil samples must be collected when decommissioning a heating oil tank in place?

When decommissioning a heating oil tank in place, it is essential to collect soil samples to assess any potential contamination resulting from leaks or spills. The requirement to collect samples from each end of the tank ensures a comprehensive evaluation of the surrounding soil. This approach captures variations in soil conditions and potential contamination levels, as contaminants may migrate from different areas of the tank's location.

By obtaining two samples from each end of the tank, the assessment becomes more thorough, enabling a better understanding of the environmental impact of the tank's operation. This sampling strategy helps meet regulatory requirements and protects the environment by ensuring that any contamination is identified and addressed properly.