Wisconsin Mound Soil Absorption System and Area FillPractice Exam

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If stumps and boulders are significant, what action may the system designer take?

Decrease the size of the mound
Increase the size of the mound
Leave the existing design unchanged
Remove them entirely

The correct answer is: Increase the size of the mound

When stumps and boulders are present in the area designated for a soil absorption system, these obstructions can significantly interfere with the effective functioning of the system. Stumps, boulders, and other large debris can inhibit proper drainage and aeration, leading to insufficient treatment of wastewater and potential system failure. In this context, the appropriate action for a system designer is to increase the size of the mound. This adjustment allows for the design to compensate for the limitations caused by these obstructions. By enlarging the mound, the designer can provide additional space for soil absorption and treatment, ensuring that the system can adequately manage the volume and quality of effluent while meeting regulatory requirements. This approach also addresses the potential for uneven settlement or voids caused by the stumps and boulders over time, which could further compromise system performance. Hence, increasing the size of the mound is a proactive strategy to maintain the integrity and effectiveness of the soil absorption system in challenging site conditions.