University of Illinois Extension

Quiz

Section 906.50 — Mound design

  1. Section 906.50 — Mound design
    Incorrect. The correct answer is highlighed in green below.

    A mound system:
    1. shall include a septic tank for pre-treatment of sewage
    2. shall include a septic tank for pre-treatment of sewage when necessary
    3. does not have to include a septic tank
  2. Section 906.50 — Mound design
    Incorrect. The correct answer is highlighed in green below.

    The design of the mound shall be based upon:
    1. the expected daily waste water volume using the data contained in Appendix A, Illustration A, of the Private Sewage Disposal Code, (77 Ill. Adm. Code 905)
    2. the soil percolation rate
    3. sized such that they can accept the daily waste water flow without surface seepage,
    4. the ability to avoid encroachment of the water table into the mound
    5. all of the above
  3. Section 906.50 — Mound design
    Incorrect. The correct answer is highlighed in green below.

    The mound height shall consist of:
    1. the fill depth
    2. the trench or bed depth
    3. the cap and topsoil depth
    4. all of the above
  4. Section 906.50 — Mound design
    Incorrect. The correct answer is highlighed in green below.

    Mounds require:
    1. a minimum of 1 foot of fill under the bed or trenches.
    2. a minimum fill depth of 2 feet for sites where the soil depth is less than 3 feet over creviced bedrock
    3. the same fill depth regardless of underlying geology
    4. A and B