What is the standard size of a drainfield based on excavation dimensions?

The standard size of a drainfield based on excavation dimensions is determined by adding a specific measurement to the bottom of the excavation, specifically one foot of sidewall. This consideration is crucial because the sidewall area plays a significant role in the overall treatment and dispersal of effluent in the soil.

When a drainfield is designed, it is essential to account for the absorptive capacity of the soil in both the bottom and the sides of the excavation. By including one foot of sidewall in the calculations, it helps ensure that the effluent can effectively percolate through the soil, maximizing the treatment process and reducing the risk of system failure or pollution.

Properly sizing the drainfield based on these dimensions supports effective wastewater treatment, minimizes environmental impact, and adheres to regulatory compliance, all of which are critical for the successful operation of an On-Site Sewage Facility.