1980-12-15 Septic System Design Report

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10 SITg 3VAJ.OATION RKPORT t R LOT 2, 1141.QCK 2 FARV1 , +i SUBDIVISION • 12-15-60 :his lot was previously tested by us on October 1-11, 1919 for a proposed house t'iat was never constructed. Six percolation holes Were te3te3d at that time and three soil borings taken in an area that is stil ;7snbl:� for a drainfileld site. The percolation holes were dvf- i n- .,.e.s ce •r and 6 incL-e3 in dia►-.ete -, the ,.oil borings were inches In diamoter to the 1� foot depth and 3 in- ches in dianetor to the & foot depth. 5a results are shown on the next page with the average per- colation rate for the b holes being 50.4 ninutes per inch. One hole had a much slower rate probably because of its location near a shall scale. ene drainfiald should be kept to the north to avoid tiAs area and also allow more root. for the house and driveway to be built. Since the soil appeared well drained and no evidence of a higa water table existed, a standard grainfield system could be used for both the primary and alternate sites. For the proro:�ed 3 bedroom hou:;e the estimated sewage flow is `0-450 ia. lons .,or day. :'ith an average percolation r//e of 50 minutes ner ire:: it will be necessary to install at least 10i6sq.ft. of soil treytnent area. Dive trenches 2.1, feet wide and C`) feet lonir wO;L d Y' e_(': +..ir' r-'nure`l 10,10 sq. ft. of area. I'he:se trenci:e3 YT id be A min;emu;,: of ; feet centor to ..enter and 4 feet deep to extend into the better irm..tori.al. '1%4o 1103 7allon ne-ttic tanks should be used with the sy--te-ii and it mill al e o be • i-obabl v necessary to «se some type of pumping s;.►s- tem to serve t`-to bn :anent floor. All construction wid nateri.als shoulg adher, to t.:e )rovi. si ons of the Orono on -site sewage treat- ment _.,,Dtp! , ]:' ::. ' ,,:.ner A r_o •.ded, -loase contact no. Sinserely, P:!:1r,0110 INC. 14ark S. Gronberg, �P'.