Agenda - Council - 02/28/1984 - Laserfiche WebLink

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- 20 - '1 I I I I Perforation holes shall be as set forth in Table I set forth in section 150,014D Subd. (2). Holes shall be drilled straight into the pipe and not at an angle. The perforated pipe laterals shall be connected to a two- inch diameter manifold pipe with the ends capped. The laterals shall be space no further than 40 inches on center and no further than 20 inches from the edge of the filter material. The perforated pipe laterals shall be installed level with the perforations downward. The manifold pipe shall be connected to the supply pipe from the pump. The manifold shall be sloped toward the supply pipe from the pump. I I 17. The quantity of effluent per ~mp dose shall be at least 25 percent of the estimated or mmasured daily sewage flow. The minimum single effluent dose shall be not less th~n 75 gallons. 18. At least two (2) inches of filter material shall be placed over the lateral or distribution pipes. 19. Straw or marsh hay to an uncompacted depth of three (3) to four (4) inches shall be placed over the filter material. 20. Construction v~hicles shall not be allowed on the filter material until backfill is placed. 21. Sandy loam soil shall be placed on the filter material to a depth of one (1) foot in the center of the mound and to a depth of six (6) inches at the sides. I I I I I I I I 22. A maximum of two (2) ten (10) foot wide beds may be installed side by side in a single mound if the soil percolation rate is between five (5) and sixty (60) minutes per inch to a depth of at least twenty-four (24) inches below the sand layer. The beds shall be separated by four (4) feet of sand. 23. When two (2) beds are installed side by side, the sandy loam fill at the center of the m~und shall be eighteen (18) inches deep and six (6) inches deep at the sides. 24. Six (6) inches of topsoil shall be placed on the fill material over the entire area of the mound. 25. A vegetative cover shall be established over the entire area of the round. 26. No shrubs shall be planted on the top of the mound. Shrubs may be placed at the foot and side slopes of the mound. 27. The side slopes on the round shall be no steeper than three (3) to one (1). 28. Whenever mounds are located on slopes, a diversion shall be constructed ~m~ediately upslope from the round to intercept and direct rtmoff.