(A) Sludge measurement and removal.
(1) At least once a year the owner of any septic tank or his or her agent shall measure or arrange for measurement of the depth of sludge and scum in the septic tank.
(2) When, as a result of that measurement, the top of the sludge layer in the tank or any compartment of the tank is found to be less than 12 inches below the bottom of the outlet baffle or submerged pipe, or if the bottom of the scum layer is less than 3 inches above the bottom of the septic tank outlet baffle or submerged pipe, the owner or agent shall arrange for the removal and sanitary disposal of sludge and scum from the tank; provided that this requirement for measuring shall be waived for any septic tank which is cleaned as indicated at least once each calendar year.
(B) Removal of solids from distribution box.
(1) At least once each year the owner of any system equipped with a distribution box shall arrange for the opening of the distribution box and removal of any settled solids therein.
(2) This material shall be disposed of to the septic tank or by other means acceptable to the Council.
(C) Seepage pit liquid.
(1) At least once between May 1 and June 30 of each year the depth of liquid in each seepage pit shall be measured.
(2) When, as a result of this measurement it is found that the liquid level in the pit is less than 1 foot below the inlet, a second measurement shall be made 8 to 12 hours after the first measurement, during which time no liquid shall be discharged from the seepage pit.
(3) If, as a result of the second measurement, it is found that the liquid level in the pit has not lowered at least 2 feet during the indicated period of time, an additional seepage pit or other acceptable soil absorption system shall be provided.
(1986 Code, § 404.07)