What is the composition of Class 1b soil?

Class 1b soil is characterized primarily by its sandy composition. This type of soil consists predominantly of sand particles, making it relatively well-drained compared to soils with finer textures. Sandy soils allow for good aeration and promote drainage, which can be beneficial in certain on-site sewage facility applications as they reduce the risk of standing water and facilitate proper filtration of wastewater.

In contrast, other soil classifications such as clay-heavy soils contain a high percentage of clay particles, which can retain water and lead to poor drainage. Soils with high organic matter are typically richer, supporting plant growth but may affect drainage and aeration in the context of wastewater treatment. Gravelly soils, while also well-draining, have larger particle sizes, which influence the physical dynamics of how wastewater moves through the soil.

Overall, identifying the sandy nature of Class 1b soil is crucial for understanding its role in the effectiveness and efficiency of on-site sewage facilities, particularly how it interacts with the treatment processes involved.