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Koch's Soil Testing s, P.O. Box 81 Loretto, MN 55357 Tel: 16121�479,�§@7 DEC y 1 Dwight Post Const. 12/10/95 Tel; 4.75-9515 Jib Site; Lot 6, Block 1 , Meadow Wood Pond , Orono, Hennep,&n Co. Minn. The above lot was tested in July 1993 to determine what type of drainfield could be installed and still comply with the City of Orono and the Minn. Rules 7080 On-SVIe Sewage Codes. Two site were te.:ted and the results were the following I. Site # 1 Ave. pert . rate--43. 9 min/in. Mott .ed soil level was at 2�-36 inches. Site # 2 ATe perc. rate---43. 3 min/in. Vott ': ed soil level was at 34-38 inches. # yottled soil i consider the high seasonal saturatdd soil levels that exist during the wet seasons( fall and spring) . The City of Or'or � ,and the Minn. Codes require that the minnmum depth to mottled soil be Lt 48 inches or deeper before a standard trench system can' t lbstalled . There .'ore with the above inf,.;a,mation ( mottled soil levels ) the anly' type of system that can be instaled on this lot is a pressurized mound system and still comply with the local and Minn. State Codes. The size of' mour, I system needed for a 4 bedromm home ( based on 600 gal/day daily water usea ;e and a perc . rate of 43. 9 min/in. the sizing factors ) would be the fol '.owing size; Ovt:rall size---�, )42 sq. ft. .t?p:3lope Length-- : O f t. — Downslppe LengtY .-84 ft. Width--39 ft. Rock Bed Size--,,,)0 sq. ft. Length--50 ft. Width--10 ft. ' amount of materials needed ; Sand --180 ,ids. , 255 tons Ave. Depth--1. 6 ft. Rock---19 FIs, 27 tons ---1 . 0 ft. Sandy Loam---40 yds. ,----1 . 0 ft. Topsoil--- -90 Yds. " ,-----9 inches$ rhe above amounts could vary by plus or , minus by 10 This muund must be pressurized therefore a pump tank and - a pump is neeededi Size of pump ta: ;c--1000 gallon Size of pump--- '+0 9.p' -M- ( must overcome at least 17 ft. of head. Pumping Rate--167 gal/cycle( 4 cycles/day) An alarm system must be installed in the house to indicate pump failure this must be both a sound and a light alarm system. f Two 1000 gallon sealed septic tanks should be Installed these tans should b pumped out every 2-1 years. These tanks should be instal ed at a shallow de 1-2 ft below theg?> uzs�" + � ?n° irled"� 'e�ei at�2 +`'lnc3�e: Note ; A soil- boring was done in the proposed site and the same soil condi t. existed as the -ones encounter in the 1993 borings. Therefoe it can be assumed the the soil conditions was not altered from 1993 to the presemt t Therefore the same precoation. rates should also exist. Site Evaluator nobort Koch RA--4 A^1P� I�'1 �� MPCA Certified �C /yah