Agenda - Council - 09/12/1989 - Closed Executive Session and Regular Meeting

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!50.01.gF - FINAL TREATMENT AND DISPOSAL - STANDARD SYSTEM Final treatment and disposal of all sewage tank effluent shall be by means of soil treatment and disposal. Subd. 1 - Sizinq 1. The required soil treatment area shall be determined by number of bedrooms for dwellings and definition of "water usage" ..... for o~her establishments. .~.' .-~.- 2.'~:~ Th~ minimum soil treatment area required for any dwelling '~'~"~'~ shall p~°vide for at least two (2) bedrooms. 3. The minimum soil treatment area required for multiple residential units shall consist of the sum of the areas required for each individual unit. 4. Trench and bed size shall be at least as large as set forth in Table II. TABLE II Required Soil Treatment Area in Square Feet of Trench Bottom Percolation rate in min- utes per inch Faster Than O. 1 (d) 0.1 to 5(e) 6 to 15 Percolation rate in min- utes per inch Per Gallon of Sewage Flow per day Special 0.83 1.27 Per Gallon Depth of Filter Material Below Distribution pipe (c) 6" 12" 18" 24" Soil Treatment Required. See Section 170 170 135 115 105 255 255 205 170 155 of Sewage Flow per day Depth of Filter Material Below Distribution pipe 16 to 30 1.67 335 31 to 45 2.00 400 46 to 60 2.20 440 61-120(e) - - 335 270 225 205 400 32Q .... 265 ......... 240 440 355 290 265 Table II is based on a sewage flow of two hundred (200) gallons per day per bedroom and shall be used as the basis for sizing household systems. In every case, sufficient area shall be provided for at least two (2) bedrooms in dwellings. For systems other than household systems, the required treatment area shall be based upon gallons of waste per day. The required treatment area may be reduced, for trenches only, by the following 2