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October 14, APPLICANT: 1993 John Davidson 93-03~39 Your site has been found suitable for a STANDARD ON-SITE SEWACE DISPOSAL SYSTEM. The following cons=ruction specifications shall apply to the installa- tion of your septic system. I, The septic tank shall have a minimum liquid capacity of 1000 gallons. 2. The p~ojected daily sewage ~low for this project ~s calculated at 450 gal!one D~ day. Based on soil conditions observed On this site, th~ disposal field wi~l ~ sized at 150 lin~.l, feet ~er 150 ~allon~ of projected daily ~wage flow. A minimum of .450 lineal fee____~t of disposal field will ~ =e~ir~ for you~ p~o~sed develop- msnt, The disposal trenohes are constructed t~ (2) fee~ wide and on mln~um ten (10) {oo~ centers and with no liDe exceeding 125 feet in length. The trenche~ an~ perforated pipe are installed level (~1") and contested ~O follow the ~atural ground surfac~. 3~ The dis~a~ field shall be constructed wi~h e ~1 di~t ' with a min~ trench depth Of ~4 inches a~ a max~um ~rench du~h of 24 %~h~s- There must be at least ~.~. inohes of backfill over the to~ Of the gravel~ measured from the natural g~ound ~urface. A groundwater interceptor is =~/uifed as part of this system. This intercepter trench must be constructed a minin%um twelve (12) inch~s wide by 48 inches dee~ with 36 inches of clean ~avel placed ovmr a four (4) inch smooth wall perforated pipe. The interceptor must be located at least ~en (10) feet upslope from the disposal field and must disOharge through a watertight, non- perforated pipe beside or below the disposal field. A separation of 25 feet is required from the septic tank if the tank is located u~slope of the groundwa- ter interceptor. This approval is site s~=ific to the area tested and the septic system must be located in the immediate area of the test pits unless otherwise autho- rized by this office. A new site evaluation may be required if the system is p~oposed for a different area on th~ property. SPECIAL CONDITIONS~ ~ee the attached setback table for minimum separatio~ distances, Those setbacks cf particular importance en this site are highlighted.