Comp Plan 1974-1977 FILE #1 - Laserfiche WebLink

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15, Gravity Distribut'ion. (a) The four-inch distribution pipes shall be rigid plastic with holes at least one-half inch diameter spaced no further than 36 inches. One row of holes shall be laid at the bottom of the pipe. (b) The distribution pipe shall slope downward two inches per 100 feet away from the distribution box. (c) The far ends of the distribution pipe shall be connected. (d) The distribution pipes shall be spaced no further than five feet apart and no further than 30 inches from the edge of the filter material. (e) The distribution pipes shall connect to the outlets of a distribution box. 16. The quantity of effluent per pump dose shall be at least 150 gallons per bedroom for dwellings. For other establishments the dose shall be at least 25 per- cent of the estimated or measured daily sewage flow. 17. At least two inches of filter material shall be placed over the lateral or distribution pipes. 18. Straw or marsh hay to an uncompacted depth of three to four inches shall be placed over the filter material. 19. Construction vehicles shall not be allowed on the filter material until backfill is placed. 20. Sandy loam soil shall be placed on the filter material to a depth of one foot in the center of the mound and to a depth of six inches at the sides. 21. A maximum of two ten-foot wide beds may be installed side by side in a single mound if the soil percolation rate is between five and sixty minutes per inch to a depth of at least 24 inches below the sand layer. The beds shall be separated by four feet of sand. 22. When two beds are installed side by side the sandy loam fill at the center of the mound shall be 18 inches deep and six inches deep at the sides. 23. Six inches of topsoil shall be placed on the fill material over the entire area of the mound. 2O