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• • Capping Fill System Diagram • • • 10 feet minimum : 10 feet minimum \\N \\`4\\\\\\. m\\\tit\\\\\\\t\\\.1,\\k m k m•\\t.\ti\fit\\\\\\•\\1\tt'ti'tik,w.t'\'t\mws• \\\\\\\\\ti\\\\\\\\\\\\\\ Fill -10 to 16 inches depending on distribution technique ..\\\\\\\\\\\\\\\\\\\\\\\ Al2" trench depth _ _ �e Original ground : 12" d. �ax3 � iat • Drain Media surface • Capping Fill Construction Requirements. . Construction Requirements: The cap shall be constructed in accordance with permit requirements: Unless otherwise required _ _ , the construction sequence shall be as follows. • a. Construction of capping fills may only occur between June 1 and October 1 unless otherwise allowed. The upper twenty-four • inches of soil must not be saturated or at moisture content which.causes loss of soil structure.and/or porosity when worked. • b. The fill.material must be compatible with the native topsoil on the site. The fill soil must be.examined and approved by a • sanitarian from our office prior to placement on the drainfield site. . c. .The drainfield site and the borrow site must both be scarified (plowed or disced) to destroy the vegetative mat. • d. Apply fill to the drainfield site and work in•(rototill) so that the two contact layers (native soil and fill) are incorporated. Evenly grade fill material to a final depth of 10"for equal distribution or•16"for serial distribution. This will result in a six or twelve inch settled fill depth. . e. ,Install drainfield as specified in construction permit. There must be a minimum of 10 feet separation between the edge of the fill and the'nearest trench sidewall. • f.• • Following inspection and_approval, backfill the trenches carefully. The site must be planted with grass, and protected from livestock, automotive traffic, or other activity that would damage the system. • Required Inspections: The following minimum inspections must be performed for each capping fill installation. • a. Both the drainfield site and the borrow material must be inspected for scarification, soil texture, and moisture content prior to . • cap construction. - • b. •After the cap is placed, an inspection must be made to determine that there is good contact between fill material and native ' soil (no obvious contact zone visible), adequate depth of material, and uniform distribution of fill material. G. A pre-cover inspection of the installed drainfield must be made. A completed "as-built" record of the installation must be submitted with the request for this inspection. d. A final inspection must be made after the system has been backfilled, finish-graded, and seeded. A Certificate of Satisfactory completion may be issued following this inspection. .- . • NOTE: The_system installer is responsible for final backfilling and grading of the system. The property owner is responsible for establishing a vegetative( •er within 30 days of the final grading of the cap. 1