Agenda - Council - 11/25/1997 - Laserfiche WebLink

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§ 8.30 c. Printed 12./28/90 4. Any soil treatment area shall be set back the following distances if located in an area which has been designated as follows by any local, state or federal regulation. Regulations Setback Distance in Feet Recreatic- ial development lakes 75* General development lakes and streams 50 Wild rivF-, 150 Scenic river 100 Critical river Designated tributaries of wild, scenic and recreational rivers 100 75* *Required for new developments and, where applicable, for existing developments. 6. Soil treatment- areas shall not be placed in flood plains delineated by local ordinances adopted in compliance with the Statewide Standards and Criteria for Management of Flood Plain Areas of Atinnesota (Chapter 6120), or in areas for which regional flood information is available from t�L Department of Resources except that in areas where ten year flood information is available from and/or approved by the DNR, soil treatment systems may be installed in accordance with the provisions of Chapter 7080.0210. 6. Soil treatment areas of individual sewage treatment systems that are designed to treat an estimated daily sewage flow greater than 3,000 gallons per day must be separated from other similarly sized systems by at least 300 feet. Design and construction. 1. The bottom of trenches and beds shall be at least 4 feet above the water table or bedrock. 2. The trenches shall be not less than 18 inches, nor more than 36 inches wide. Any trench wider than 36 inches shall be considered a bed. No bed may be wider than 25 feet and parallel beds must not be located closer than 10 feet apart. 3. Trenches and beds shall be not more than 100 feet in length. 4. The bottom of the trench of bed excavation shall be level. 5. The bottom and sides of the soil treatment system to the top of the drainfield rock shall be excavated in such a manner as to leave the soil in a natural, unsmeared, and uncompacted Page 251