University of Illinois Extension

Quiz

Section 906.30 — Soil and Site Requirements

  1. Section 906.30 — Soil and Site Requirements
    Incorrect. The correct answer is highlighed in green below.

    During mound construction, for shallow permeable soils over pervious bedrock, the percolation test shall be run at:
    1. a depth of 12-18 in. below the natural surface.
    2. a depth of 20-24 in. below the natural surface
    3. a depth as determined by the proximity to underground fractured limestone or comparable material
  2. Section 906.30 — Soil and Site Requirements
    Incorrect. The correct answer is highlighed in green below.

    At the proposed mound site, there shall be:
    1. a minimum of 24 in. of unsaturated soil between the soil surface and pervious bedrock or the seasonal high water table, including a perched water table.
    2. a minimum of 12 inches of unsaturated soil between the soil surface and pervious bedrock or the seasonal high water table, including a perched water table.
    3. a minimum of 48 inches of unsaturated soil between the soil surface and pervious bedrock or the seasonal high water table, including a perched water table.
  3. Section 906.30 — Soil and Site Requirements
    Incorrect. The correct answer is highlighed in green below.

    High water tables can be determined:
    1. only by presence of significant water levels being present
    2. by soil mottling of grey and red soil in mottling patterns
    3. only the presence of grey soil coloration
  4. Section 906.30 — Soil and Site Requirements
    Incorrect. The correct answer is highlighed in green below.

    When preparing the site:
    1. vegetation shall be cut and removed prior to construction
    2. the site must be plowed with a mold board plow 7-8 in. deep with the plowing done perpendicular to the slope. Chisel plowing may be used in place of mold board. Plowing shall not be done with the furrow running up and down the slope.
    3. roto-tilling is prohibited.
    4. all of the above