At Grade System
An OWTS dispersal system with specific design parameters that has the infiltrative surface located at, or close to, the original grade, (e.g. mounds or bottomless sand or peat filters). <
At Grade System
An OWTS dispersal system with specific design parameters that has the infiltrative surface located at, or close to, the original grade, (e.g. mounds or bottomless sand or peat filters). <