What is a "soil profile" in the context of OSSF assessments?

A soil profile is defined as a vertical section of the soil that reveals its layers and characteristics. In the context of On-Site Sewage Facilities (OSSF) assessments, understanding the soil profile is crucial because it gives insight into the different layers of soil, including their texture, composition, structure, porosity, and water retention capabilities. This information is essential for determining how well the soil can filter and treat wastewater from sewage systems.

The soil profile is typically examined through soil borings or pits that reveal a cross-section of the soil down to the bedrock. Each layer, or horizon, in the profile can have distinct physical and chemical properties, affecting how wastewater percolates and is treated in the ground. The quality of the soil and its ability to absorb and clean effluent directly influences the design and placement of OSSF systems to ensure environmental protection and compliance with regulations. The detailed analysis of the soil profile helps professionals make informed decisions about system design, placement, and installation practices.