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. Koch's sols Testing <br /> P.O. Box 81 <br /> ' Loretto, MN 55357 <br /> Tel: (B 12)479-2637 <br /> Rex Rewtz 9/i6/94 <br /> �3z0 Torth 'Shore 'EV,ive <br /> Crono, Finn. <br /> fob Site; Above Address <br /> The current drai`nfield is malfinctionincr therefore another site was <br /> tested' in the fall of ' 1.993 (August!--1993) . The percolation tests indicated <br /> �En:,:.averao•e )er'colat.ion rate• on37. 1 min/in. and the dpth to mottled soil <br /> was at 14-2 inches with water at 22-38 inches . <br /> With the above infomation a mound system would hate to tae installed <br /> due to the water table. <br /> a system was design however the alj)j)arent size of the lot was not as <br /> bi.w as was assumed by. .the owner. herefore w'nne the actual survey <br /> of the lot was done' . a:, dif fernt design was done to see if the system <br /> could fit in the appiont.ed are;4s <br /> T!^.e size ' of mound system needed for .a 3 bedroom home ( based on 4.50 gal/da <br /> d ily water •useage and a pert . rate of 37. 1 min/in. the sizing factors ) <br /> would bee (-,4 ft. long on the upslope, 68 ft. lon,7 on the •downslope <br /> and 47 ft. "'wide .( 3102 sq. ft. ) . <br /> The size of the roW, bed needed would be 10 ft. wide by 38 ft. long <br /> ( <br /> 380 5.q. ft. ) . <br /> i1ronut of material needed,; <br /> 6and---225• yds. ---315 tons ave. depth--2.3 ft. <br /> Hods---14 yds. ---20 tors- " ,--1 ft''. . <br /> Sandy Loam- =---30 yds. "-1 ft. <br /> Topsoil------86 yds "--3/4 'ft. a <br /> The above amounts could vary by plus or,'m_inus 10 % <br /> This mound iiust 'be preesuri4'ed therefore •a pump tants (1000 gallon) <br /> and a pump ( 30 g/p.m.--145 gal/cycle--4 cycles/day .) must be installed . <br /> An alarm system both a sound and a light alarm systwm must be installed <br /> In the house to indicate pump failin9e. <br /> Fote ; Another_..�percolation test was done next to the d•rivway (1:-4) <br /> and the ave:' perc rate was 14:.Ili min/in.The soil borin; (,3.B.-6 ) <br /> indicated that sone, fill material was present however the oti$inil <br /> soil had a pert . rate of 14.•j• min/in. ,Therefore it can be assumed the <br /> compaction of the original topsoil did not occur. Howevev when the <br /> system is installed this fill • material should be removed so the sand <br /> is actually placed on.. top of' the ori,a;ln3l'-tpps6il. This practice will <br /> ensure better treatment of •the ' f:ffluent. <br /> Site Evaluator <br /> tHo ert A. Foch r.P.C.a., 1429 <br /> MPCA Certified <br />