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P~EESURIZED DISTRIBUTION SYSTEM CONSTRUCTIONDET&IL SHEET April 15, 1992 APPLICANT: DONALD BORNER SITE NUMBER: 13394 Your site has been found suitable for a PRESSURIZED DISTRIBUTION ALTERNATIVE SE.___WAGE DISPOSAL SYS~. The following construction specifications shall apply to the installation of your septic system. 1. The septic tank shall have a minimum liquid capacity of 1000 gallons. 2. The projected daily sewage flow for this project is calculated at 450 aallons Der day. Based on soil conditions observed on this site, the disposal field will be sized at 75 lineal feet per 150 aallons of projected daily sewage flow. A minimum of 225 lineal f~e~ ~f dis~ou&l field ~ill be ~e~uir~ for your proposed deveIop- 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 (±1") and contoured to follow the natural ground surface. The disposal field piping is 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 shall be constructed with e~ual 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 ~_e~e~t ~ea~on %he_pro_Debt_v, ...... 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 p~M~T TO INSTATJ. T~ SEPTIC SYSTEM. DO NOT INST~T,?. THE SYSTEM UNTIL A VALID P~MIT HAS BEEN ISSUED BY THIS OFF~CE.