How far away from the sidewall or bottom of excavation must there not be unsuitable soil?

The requirement for unsuitable soil proximity to the sidewall or bottom of an excavation is critical in ensuring the stability and functionality of an On-Site Sewage Facility (OSSF). Unsuitable soil can compromise the performance of a septic system by failing to provide adequate drainage or supporting the weight of the system.

In this context, maintaining a distance of at least 2 feet from unsuitable soil ensures that the absorption area for the septic system is not negatively affected. This distance allows for a buffer zone where the soil is more favorable for treatment processes, helping to prevent issues such as system failure or groundwater contamination.

By adhering to this 2-foot standard, installers can ensure that the OSSF operates effectively in managing and treating wastewater, thereby protecting both human health and the environment.