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DISTRIBUTION SYSTF24 CONSTRUCTION DETAIL SHEET April 15, 1992 APPLICANT= DONALD BORNER SITE NU~ER: 13394 Your site has been found suitable for a PRESSURIZED DISTRIBUTION ALTERNATIVE SEWAGE DISPOSAL SYSTEM. The following construction specifications shall apply to the installation of your septic system. The septic tank shall have a minimum liquid capacity of 1000 gallons. The projected daily sewage flow for this project is calculated at 450 qallons per day. Based on soil conditions observed on this site, the disposal field will be sized at 75 lineal feet per 150 qallons of projected daily sewage flow. A minimum of 225 lineal feet of disposal field will be required for your proposed develop- ment. The disposal trenches are constructed two (2) feet wide and on minimum ten (10) foot centers and with no line exceeding 125 feet in length. The trenches and perforated pipe are installed level {i1") and contoured to follow the natural ground surface. The disposal field piping i~ minimum two (2) inch pressure piping, with a minimum 160 psi rating. The sidewalls of the disposal trenches and top of the filter material shall be lined with filter fabric. The disposal field shai1 be constructed with equal distribution with a minimum trench depth of 12 inches and a maximum trench depth of 12 inches. There must be at least .16 inches of backfill over the top of the gravel, measured from the natural ground surface. An effluent lift pump or siphon which is sized to provide a minimum residual head of five (5) feet at the most distant orifice is required A capping fill is required with this system. The system shall be constructed as indicated on the attached Capping Fill construction detail sheet. This approval is site specific to the area tested and the septic system must be located in the immediate area of the test pits unless otherwise authorized by this office. A new site evaluation may be required if the system is proposed for a different area on the property. SPECIAL CONDITIONS: The drainfields must be constructed within the immediate area of the test pits, preferably within the area of the most easterly pit. Con- struct the drainline trenches only into the natural undisturbed topsoil. THIS IS NOT A PERMIT TO INSTALL THE SEPTIC SYSTEM. DO NOT INSTALL THE SYSTEM UNTIL A VALID PERMIT HAS BEEN ISSUED BY THIS OFFICE.