Which guideline is essential for vehicle fueling and maintenance activities?

The guideline emphasizing the necessity of providing secondary containment during vehicle fueling and maintenance activities is crucial for preventing environmental contamination. Secondary containment refers to a protective barrier or structure that prevents spills and leaks of hazardous substances from reaching the surrounding environment, particularly surface water and groundwater.

When fueling vehicles, there's always a risk of spills, leaks, or overflows. If these substances reach the ground, they can enter storm drains or water bodies, causing significant pollution and harming aquatic ecosystems. By employing secondary containment measures, facilities can capture these potential spills and prevent them from dispersing into the broader environment. This practice aligns with stormwater management goals, as it reduces the risk of contaminants entering the stormwater system, which is essential for maintaining water quality.

In contrast, allowing fueling to occur anywhere on the site, conducting maintenance near storm drains, or assuming no precautions are necessary can lead to serious environmental harm and regulatory violations, as these practices increase the risk of contaminants entering stormwater runoff.