This type of test is used to provide a quick, subjective, estimate of the compressive strength of soil.

As part of an ATU, the clarification chamber aerates the influent wastewater for aerobic bacterial growth.

___ independently evaluates and certifies the performance of manufactured on-site treatment units with design flows ranging from 400 gpd to 1500 gpd.

A soil cannot be classified as Type A if:

This type of fixed growth ATU has bacteria growth on the surface the media submerged in aerated wastewater.

All of the following are advantages to using an ATU (aerobic treatment unit) EXCEPT:

The design of a protective system must consider which of the following factors?

In a textile filter the first compartment acts as a septic tank and the second compartment treats the effluent.

Decentralized on-site wastewater systems can provide potential advantages over large centralized systems because:

All of the following are advantages to using a UV lamp for disinfection of effluent EXCEPT: