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Home My WebLink About1987-04-14 Septic System Design Report% k % SYSTEM DESIGN FOR JENSEN HOMES OF LOT 3, BLOCK 2. FRENCH CREEK ORONO, MINNESOTA I .rr>.I ! ^ n Q 4-14-87 I. Percolation Rate. Type of System. 9.6 minutes per inch for holes 1-4, Standard system. The previously tested area by others will be used as the alternate site. We tested one hole there in the middle of a tire rut and a rate of 40.0 was obtained. Thus, this is probably the worst case and the area could still be used for standard drain- field trenches. 2. Proposed Flow Rate. 4 bedrooms @ 150 G.P.D. s 600 G.P.O. 3. Soil Treatment Area Required. Use 1.67 rate x 600 G.P.D. =. 1000 Sq. Ft. minimum. 4. Size and Number of Trenches. 334 feet of trenches 3 feet wide = 1000 Sq. Ft. These trenches would be spaced a minimum of 7.5 feet apart center to center and be no deeper than 2 feet deep in the natural soil. They may need to be shallower at the ends of the trenches in order to be level. 5. Orainfield Rock Needed. 55.6 cubic yds. of rock is needed to have 12 inches under and 2 inches over a 4 inch distribution pipe. 6. Septic Tanks. Two septic tanks,each of 1000 gallons, are recommended. In addition, it appears that a third 750 gallon pumping tank and pump will be needed to reach the higher drainfield area. 7. Additional Information. 1 i All construction and materials must adhere to the provisions of the City of Orono. Both the primary site and the alternate site must be kept free from grading and construction traffic. If there are any questions, please notify me. Sincerely, PERCOR, INC. Nark S. Gronberg, PCA certified F f > i ♦.... % mcomnoH tutmta nnr ••M T«*t holt iocAtlcw ^.7 r/L' j- • ■ f ) Bel* -^r /F—/ D*tt t**t bel* v«* pr.p«r«d_V-//-^7 . of holt bette.. ''tj inch**. DUactcr of holt, ^ Inchtt. ^ Soil datafroB ttat bolt: Dtpth, Inchtt vT Soil ttxturt . r CJ//m ^ - tC X/i‘A^. CtAY^y ■ £tAA^. jA^4tr 4^^/Vt t Method of tcratchlnt ildtvall ,1* fH SL inchtt.Depth of pta-tlsed gravtl In bottoa of holt, _ _ _ Date and hour of initial water filling <7. Depth of initial water filling, 'JL Inchet above holt bottom. V—y/- 7 Method used to maintain at least 12 inchet of water dtpth in holt for at least A hours ifh: Pf t L_ _ _ _ _ Percolation test readings made by f) v £iV\ ‘ v ■. " ' starting at f.}L on (date) during rest, f d /V a.B . Maximum water depth above hole bottom inches. f Time •^4Time Interval, ! Minutes I Measurement, inches Drop in water level, Inches Percolation rate, minutes per inch Remarks / 2 . *) rpii / \ U L ^ /// Ak * 9 1 Tr’/'' '/V /^/2- fl ^ - ■?r t / TL — // TlTI 3n t» /7 - /? //. •fxf rVt/ A r, ‘L L / / / / 7 OS' a aav 4MAh.iC. \ t ■ -mCOUTXON TEST AAtA Sim B« B5 T««t holt ioftloa 7*t£A/ S ^jl/^L ) Holt niahtr 2 Ottt tttr hole vtt prtptrtd Depth of hole hotto»,.^y tnchee. Dimaeter of hole, L loehee. Soil dete.froB test hole: Depth, Uiches Soil testure r-//cotter jjtu0 /r-3i coj/exe etfM i44f\r 7AJV ^7: r/err cejty Hethod of ecretchine lidevell Jf jfT^A Jf/l >iachci.Depth of pea-sited gravel in hottoa of hole, ^ Date and hour of Initial water filling V*"//* Depth of initial water filling, inches above hole bottom. Method used to maintain at least 12 inches of water depth ia hole for at least 4 hours ^_ _ _ _ _ _ Percolation test readings made by JJsSX on V**//*** ^ 7 starting at ! ! 9 **”* . Maximum water depth above hole bottom (date) ^ Mli during test, _____________ Inches. Time Time Interval, Minutes Measurement, inches Drop in water level, inches Percolation rate, ^nutes per inch Bemarks / / B- % HeFiiL 3.0 I Ii>' I yyj I 7/f»7 I — 7.Z7 ^Butes per lath. m:/* K f ♦\ \ mCOUTXON TCST OATA flBT Tttt hoXt location JCA/S £JU L C) Bolt nui^r 3 Date tatt hole vaa prepared , Pepth of hole hotten, >0 Inchea. Dlaacter of hole* ^ inchea. Sell data.froB teat hole: Depth, inchea /7-/Z SM. Soil texture Sj»>00Y «■ IL -iY Method of acratchlne aldevall J> r/l Depth of pea-alttd gravel In boctoa of hole.2 inches. Date and hour of initial water filling f ^^'7 Depth of initial water filling, J 4/5" Z2^Inches above hole bottom. Method used to maintain at least 12 inches of water depth in hole for at least A hours t: r/ L- L onPercolation test readings made by JOdAJ fy^ D Ji/^ 4/* //* P 7 atartina at /. / 9 . Maximum water depth above hole bottom— — -:E:2: inches. (date) during test. Time Time Interval, Minutes Measurement, inches Drop in water level, inches Percolation rate, ^nutes per inch Remarks /^/?Q TT^ !y~2Y JAA /2 7t 2a AM ii>. 4^7/» AtJ m I’M/ ! L ^7iO/f/Vv '-i‘4 SB I \TT y. o minutes oar inch. r \ i- )5 mCOLATXON TEST DATA SHEET Tttt holt iocttloa ^^A/S£yL rnahtr____^ Dttt tttt hole vtt prtptrtd Dtptfi of holt bottoa. /g Ditatttr of holt, ^ lochtt. /y iachtt. Soil dttt.froa tttt bolt: Dtpth, Inchtt Soil ttzturt IsAt^ jf£^A sAf^Y cuy Method of tcrttchln^ tidtvtll T'r JT ?Depth of pta-tiztd grtvtl In bottoa of hole, _ _ _ _ _ Date and hour of initial water filling Depth of initial water filling, inchee. 9. u.-r" 1 L Inchea above hole bottom. Method used to maintain at least 12 inches of water depth in holt for at least A hours ^C^ ^ Percolation test readings made by /?^A/ Jo 6^_ _ _ _ _ on S'7 starting at / ^ . Maximum water depth above hole bottom (date) ------- during test, _____________ inches. Time • ime Interval, Minutes Measurement, inches Drop in water level, inches Percolation rate, ^nutes per inch Remarks Q U< f7 'KO FoLU / / L 2JL 2.20 2. ^ ci. / hJL WFvrsf-2’n ■ 7^A;A/ JAAlM. Trw /?Vi/- n 7 6 /f / Pb f 2. M TJJlZ. /JVLT //. ^minutes par Inohi \ \ mCOlATlON TEST BATA tlEET Tttt holt iocttlon\7"£A/ CcA Bolt niabtr Dttt tttt holt vti prtptrtd A/^// ^ *7 Vpth of holt hotteo, / loehtt. Dlaotttr of holt, /!% loehtt. Soil dttt.froa tttt bolt: Dtpth, loehtt Soil ttzturt r^^c. ifiAnt Method of terttehlnt tldewtll ^CpA'TcIi z.loehti.Depth of pea-flzcd grtvtl in hot too of holt. Date and hour of initial water filling 4/ ^^ Depth of initial water filling, f inchea above holt hot too. ^ V Method used to naintain at least 12 inches of water depth in holt for at least 4 hours ffh. Ft L L onPercolation test readings Bade by h dy-yy*- startina at A . Maxinua water depth above hole bottoa----- —^------------p.gu inches. (date) during test. Tiae tiae Interval, Minutes Measureaent, inches /i.io » / BU Drop in water level, inches Percolation rate, Routes per inch Keaarks / 22m /An y 3. 2^ 3 0/1! 7 Vy } 7 •rSL ? HM iM 7 V?>N 7 W W^ I u •• -y/v 11 11n9 \I I n uu Tzl. to-t\ T) t* if loth.r-r- All rate • \ FEKCOUTIOH TlfT PATA CTUT i-SS Tcit hole ioottoB. TBAJ^r/f/^FAfK tX bit nv^tr L—^rrL'LIfKJ WAC liDMP«r ttet* t>*t hole v.t propored S/7 . P^th of hoU hotto..,^ i»eh.., Dlaacttr of hole, 4 Inchtf. Soil dato.froB tost bole: Depth• Inchct OziJt Soil tezturt TjtMUiT /Am^ j*t-zo zr. Lsjti^r rjMO Method of tcretchifte el devil SZ Afjfl c // /»' inchee.Depth of pea-tl:ed gravel In bottoa of hole, _ _ _ _ _ Date and hour of initial water filling -7 Depth of initial water filling, / ^ Inchta above holt bottoa. Method used to salntaln at least 12 Inches of water depth la hole for at least 4 hours i^L'F f L L Percolation test readings aade by D D/i Z jJ) ^ J starting at f . Maxlaua water depth above hole bottoa _ _ _ _ _ _ Inches. (date) during test. 7iae Tiae Interval, Minutes I Measureaent, Inches Drop In water level. Inches Percolation rate, ^nutes per inch Reaarks k 1 /? J vO r.uLU o xli/ ? .c J.2 Vhn 7 0 AJi>/ Hr 11 V. 29 ? D > //U I 3 lYi' /O t 7 P TZHJ /rO-W ■7Z *r ^Vd) yo.o »4tkueoa Mr Inch. ‘y > 5 I . i B-27 Location or Project Jr/. ■ > » /• { >1./ A ' . . /(_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Borings made by ()/>/ , ^ v . .. < ,' ^ a C- >. :> /»’> r‘/^ Date * y y » ^ *7 Claasiflcatiea System: AASHO_ _ _; USDA-SCS X : Unified_ _ _; other_ _ _ Auger used (check two): Hand or Power_ _; Plight_ _, or Bucket other Depth, In feet 0 Boring number / Surface elevation /aa, ^ 2 — 3 — 4 — 5 — ^ 6 — 7 — 8 — S>t*^** T ca4i^ A.’. S4*.i r r <./!>' /*(“/*. iaA4-r l4iA^y SAA'O jiirt lAAi^ End of boring at 7 feet. Standing water table: . Present at ___ feet of depth, hours after boring. Hot present la boring hole X . Mottled soil: Observed at S'm ^ feet of depth. Mot present In boring hole Observations and comnents: Depth, In feet 0 Boring number __ _ Surface elevation /o /, 3 1 — 2 — 3 — 4 — 5 — 6 — 7 — 8 — f/Attr lOAr^ 4ti4^U/A^ ClAt JAP-a'r iAAi^ CAdASf (OAAi r /‘/K'St CitAr <AAA<r rA*.^ End of boring at feet. Standing water table: Present at_ _ _ _feet of depth. hours after boring. Hot present In boring hole Mottled soil: Observed at SI 3 feet of depth. Hot present In boring hole Observations and comments: % 1S 1« i I \ \\ ry 1 I. i s 1 B-27 or Project ^ JT If lede by p/>i» ^ HTfLirhM^ /L » Date I / ^ Location Borings nade Classification System: AASHO JkLZ USDil-SCS X ; Unified : other Auger used (check two): Hand or Power_ _; Flight or Bucket ; other Depth, in feet 0 Boring number ? Surface elevation 9^, S 1 — 3 — 4 — 5 — ^ 6 — 7 — a — /4r«fc/4/ rs^T L§Af^' gt»^ t.04r»v ^€0 fAsi^A CK4r 0040,^ xiMT ^lAy /HOttr dddt 004U,. JAgy0 Cffdr lurr ctAY End of boring at "7. i> feet. Standing water table: Present at_ _ _ _feet of depth. _ _ _ _ _ _ hours after boring. Not present In boring hole ^ Mottled soli: Observed at 3* 3 feet of depth. Hot present In boring hole Observations and comnents: Depth, In feet 0 Boring number Surface elevation 1 ~ 2 — 3 — 4 — 5 — 6 — 7 — 8 — 0 # End of boring at feet. Standing water table: Present at feet of depth, hours after boring. Not present In boring hole Mottled soil: Observed at feet of depth. Mot present in boring hole Observations and comments: