Study for the North Carolina Septic Inspector Exam. Use detailed flashcards and multiple choice questions with hints and explanations. Get exam-ready today!

Multiple Choice

Organic soils shall be considered what with respect to soil structure?

The key idea is that soil structure must be stable and well developed to support a septic drainfield. Organic soils, made up largely of decomposed plant material, have unstable aggregates and poor strength. They can be extremely variable in moisture, compact easily under load, and don’t provide consistent, adequate drainage or filtration for effluent. Because a drainfield relies on even infiltration and long-term stability, organic soils don’t meet those requirements, so they’re considered unsuitable with respect to soil structure. The other options imply some level of suitability or a different classification, which doesn’t fit how organic soils behave in terms of structure and drainage.

The key idea is that soil structure must be stable and well developed to support a septic drainfield. Organic soils, made up largely of decomposed plant material, have unstable aggregates and poor strength. They can be extremely variable in moisture, compact easily under load, and don’t provide consistent, adequate drainage or filtration for effluent. Because a drainfield relies on even infiltration and long-term stability, organic soils don’t meet those requirements, so they’re considered unsuitable with respect to soil structure. The other options imply some level of suitability or a different classification, which doesn’t fit how organic soils behave in terms of structure and drainage.