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NOvember 30, 1992 APPLICANT: SITE NUMBER: Fd~NNETH ALLEN 92-380~ Your ~ite has been found suitable for a SAND FILTER ALTBRNATIVE S~WAG~ DISPOSAL SYSTEM. The following construction specifications shall apply to the installation of your septic syster~. The septic tank shall have a minimum liquid capacity of ~000 gallons. The projected daily sewage flow for this pro,eot is calculated at 450 oak~ons~0er~ay- ~a~ed on soil conditions observed on thi~ ~ite~ the d&aposal field will be eased at ~ linea!_feet Der !50 ~Lallq,ss o~ projected daily sewage flow. A minimum of ~3~ lineal fee~ of d~spo~a~ field will be required for your proposed develop- ment. The disposal trenehe~ are constructed tw~ (2) feet wide and On minimum ten (i0) foot c~nter~ and with no line exceeding feet in length. The trenches and perforated pipe ar~ installed level (~1") and contoured to follow the natural ground surface. The disposal field shall be constructed with ~al ~ist~ibutiq~ with a minimum trench depth of ~ in~es and a maximum trench depth of ~i~ches. ~here must be at least ~ inqhes of backfill over =he top of the gravel, measured from the natural 9round s~rfaoe. The sand filter system shall be designed and ~perated as per OAR 340-71-290 through $40~71-305. Detailed plans for the system mu~t be submitted prior to ~armit issuance. A building permit is required if a site built concrete box is u~ed as the sand filter container. A ~unphlet is availabl~ in our office which detail~ the requirements for a sand filter system. An effluent lift pump may be necessary to construct the disposal fie~d in the approved area and a~ the correct depth, This approval is site specific to the area tested and the septic must b~ located in the i~mediate area of the tes~ pits unless otherwise autho- rized by this office, A new site evaluation may be required if the system is proposed for a different area on the proper~y. SPECIAL The ~and filter drainfieids must be constructed wi%bin the immediate area of %he two, new southwesterly test pitS.