Which of the following statements is true regarding mound placement?

The requirement for mound placement to follow the natural slope of the site is critical for ensuring proper drainage and functionality of the septic system. When a mound is aligned with the natural contours of the land, it allows for optimal water flow and absorption into the soil, which is essential for effective treatment of wastewater. This alignment minimizes the risk of surface runoff and can enhance the treatment efficiency as well as the longevity of the system.

In contrast, aligning a mound perpendicular to the site contours could hinder drainage and lead to potential failure of the system, as water may pool or flow improperly. Placing a mound solely on flat terrain may not be feasible in all situations, especially in areas where soil absorption rates vary. Constructing a mound in any direction without consideration of the site's natural slope could lead to similar issues. Therefore, proper alignment with the site's natural slope is essential for maintaining the effectiveness and integrity of the septic system.