University of Illinois Extension

Quiz

Section 905.110 — Effluent Discharges

  1. Section 905.110 — Effluent Discharges
    Incorrect. The correct answer is highlighed in green below.

    Which of the following is not an option for discharge by a sand filter, waste stabilization pond, or aerobic treatment system?
    1. A receiving stream, river, lake, or pond which provides greater than a 5 to 1 dilution of the effluent based on a 7 day, 10 year low flow rate.
    2. A common collector provided that the collector does not discharge within one mile upstream from a public water supply intake, public bathing beach, or an public use area.
    3. The ground surface, where the discharge points of private sewage disposal systems with surface discharges does not exceed an average of one per 5 acres.
      (905.110 a-3) The ground surface, where the discharge points of private sewage disposal systems with surface discharges does not exceed an average of one per acre and the effluent does not pond or create a nuisance condition.
    4. The ground surface, where the discharge points of private sewage disposal systems with surface discharges does not exceed an average of one per acre.
  2. Section 905.110 — Effluent Discharges
    Incorrect. The correct answer is highlighed in green below.

    The BOD5 can be calculated by figuring
    1. The arithmetic mean of all effluent samples collected in a period of 7 consecutive days at 45 mg/l.
      (905.110 d-1-A-ii)
    2. The arithmetic mean of all effluent samples collected in a period of 7 consecutive days at 30 mg/l and 90 percent removal.
    3. The arithmetic mean of all effluent samples collected in a period of 30 consecutive days at 45 mg/l and 85 percent removal.
    4. The arithmetic mean of all effluent samples collected in period of 45 consecutive days at 30 mg/l and 85 percent removal.