1976.10.18 ORD 1976-132 - Laserfiche WebLink

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(1) All open joints shall be protected on top by strips of asphalt-treated building paper at least ten (10) inches long and three (3) to six (6) inches wide or by other acceptable means. (2) All bends used in the disposal field shall have tight joints at each end of the bend. (d) Filter material shall be crushed stone, gravel, or similar insoluble, durable and acceptable material having sufficient voids. This material may vary from 1/2 to 2 1/2 inches in size and shall be free of dust, sand or clay. The filter materials shall completely encase the tile in accordance with item #6 , 9 thru 12. In any case, disposal trenches constructed within ten (10) feet of large trees or dense shrubbery shall have at least twelve (12) inches of filter materials beneath the tile (e) The top of the filter material shall be covered with untreated building paper or a two-inch layer of hay or straw so as to prevent settling of backfill material into the filter material. (f) Where it is necessary to fill an area for construction of tile laterals, the bottom of the tile trenches shall extend not less than one (1) foot into the original soil. (g) The trench above the filter material shall be overfilled with four (4) to six (6) inches of earth. The backfill shall be hand-tamped. (h) Before filter material is placed, all smeared or compacted soil in the trench bottom shall be broken up and removed by raking or other effective means to provide natural soil conditions. Subd. E. Maintenance. Maintenance shall be conducted and meet the following requirements: (1) At least once a year the owner of any septic tank or his agent shall measure or arrange for measurement of the depth of sludge and scum in such septic tank. When, as a result of such measurement, the top of the sludge layer in the tank or any compartment of the tank is found to -15-