University of Illinois Extension

Quiz

Section 906.40 — Fill Material

  1. Section 906.40 — Fill Material
    Incorrect. The correct answer is highlighed in green below.

    Above the absorption area:
    1. the area above the bed or trenches shall consist of a topsoil to allow plant growth.
    2. sands are not allowed since they drain rapidly and allow more infiltration of precipitation into the absorption area.
    3. topsoil shall be placed to a depth of 6 in. over the entire mound.
    4. the cap soil shall be seeded and fertilized
    5. all of the above
  2. Section 906.40 — Fill Material
    Incorrect. The correct answer is highlighed in green below.

    A mound system shall be provided with a fill material beneath the absorption area (trenches or bed). One of the following fill materials shall be used.
    1. FA-1
    2. FA-2
    3. FA-3
    4. FA-8 or FA-9
    5. any of the above