Agenda - Council - 06/28/1983 - Laserfiche WebLink

Home

I I I I I I I '1 I I I I I I I I distribution box cannot be used as specified in Subd. l(b) above, a drop box shall be instal]ed at the head end of each lateral line. Connection between drop boxes shall be by watertight pipes; 1. The drop box shall be watertight and constructed of dur- able materials not subject to excessive corrosion or decay. Each out- let shall have at least six (6) inches of sidewall space and the side of any out]et shall be at least four (4) inches from any corner. 2. ~Ti3e invert of the inlet pipe shall be at least one (1) inch-h.3gher than the invert of the outlet pipe to the next trench. 3. The invert of the outlet pipe to the next trench shall be at ]east two (2) inches higher than the invert of the outlet pipe of the trench in which the box is located. 4. When sewage tank effluent is delivered to the drop box by a pump, the pump discharge shall be directed against a wall or side of the box on which there is no outlet. 5. The drop box shall have a removable cover either flush or above finished grade or covered by So more than six (6) inches of soil. 150.014E DOSING When the sewage quantity exceeds the amount that can be disposed of in five hundred (500) linear feet of tile, a dosing tank may be used. DOSING CHA3.IBER 1. The dosing chamber shall be watertight and constructed of sound and durable materials not subject to excessive corrosion or decay. 2. There shall be one (1) or more manholes, at least twenty (20) inches in dimension, and preferably located directly above the dosing device. The manhole shall extend through the dosing chamber cover to final grade and shall be so constructed as to prevent unauth- orized entry. 3. The size of the effluent dose shall be determined by design of the soil treatment unit, but in no case shall the dosing chamber be sized to provide a dose of less than seventy-five (75) gallons. IX)SING DEVICES FOR GRAVITY DISTRIBUTION 1. A pump or siphon shall deliver the dose to the soil treatment unit for gravity distribution over the soil treatment area. 2. For systems for dwellings, the dosing device shall dis- charge, at ]east six hundred (600) gallons per hour, but no more than two thousand seven hundred (2,700) gallons per hour. 3. For other establishments, the dosing device should dis- charge at a rate at least ten percent (10%) greater than the. water supply flow rate, but no faster than the rate at which effluent will flow o,t of the d~stribution device.