City of Deer River Municipal Ordinances
and where such use does not reduce the safety of surrounding water supplies.
The pit excavation shall terminate at least four (4) feet above the highest known or calculated ground water table. The depth of the excavation shall not exceed fifty (50) percent of the depth of any well casing in the area or twenty (20) feet, whichever is least.
The location of seepage pits, in addition to the general provisions under paragraph 3 shall be not less than the stated minimum distances from the following:
(1) Any water supply well or buried water suction pipe -- 75 feet.
(2) All classes of public water as determined by the State Department of Natural Resources - from the normal high water mark as follows:
(aa) On Natural Environment Lakes and Streams, at least 150 feet.
(bb) On Recreational Development Lakes, at least 75 feet.
(cc) On General Development Lakes and Streams, at least 50 feet.
(3) Other bodies of water - 50 feet.
(4) Occupied buildings - 20 feet.
(5) Property lines and buried pipe distributing water under pressure - 10 feet.
(6) Other seepage pits - 3 times the diameter of the largest pit (edge to edge).
Minimum seepage area of the disposal field (total flat area of trench bottom exclusive of sidewall area) shall be determined by the following percolation test procedure as applied to Table 2.