Georgia Septic Installer Practice Test

What should not be done when excavating absorption trenches?

1. Use heavy machinery

2. Work during dry weather

3. Excavate when wet

4. Follow local regulations

The correct answer is: Excavate when wet

Excavating when wet is not advisable because wet soil conditions can lead to several issues that negatively impact the installation of absorption trenches. When soil is saturated, it becomes more difficult to dig, and the risk of the walls of the trench collapsing increases, which can create unsafe working conditions. Additionally, wet soil can lead to improper compaction and support for the septic system, potentially resulting in failure of the system in the long term. Furthermore, excavating during wet conditions can cause soil to clump and stick to machinery, making the trench walls uneven and more challenging to shape properly. This could subsequently affect the percolation of effluent from a septic system into the surrounding soil, which is crucial for effective wastewater treatment. Proper site conditions are essential during installation to ensure the septic system operates effectively and complies with local regulations.