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77-199 <br />Nitz, Inc. -2- July 15, 1977 <br />REMARKS : <br />Based on the results of the most recent percolation tests, <br />as well as the satisfactory results indicated by previous <br />testing in the area, it is our opinion that a suitable <br />drainfield site with room for expansion exists in the area <br />to the :southwest of the propo:;e�i house. <br />Based on an average percolation rate of 20 mpi, City require- <br />ments would necessitate installation of 250 lineal feet of <br />30-inch wide a► ptive trenches. City requirements indicate <br />that disposal 1_ :s cannot be placed below the ground surface <br />by more than 36 inches and the recommended depth i= 24 <br />inches and that lines be no less than 4 feet a►io-c the known <br />water table. <br />The drainfield system for this lot can be de-, A u-ing <br />five 30-inch wide trenches 60-feet in length fAl a 7-i.,t <br />center to center spacing. Our recommended system design is <br />also shown on the attached sketch. <br />If you should have any further questions regarding this <br />data, l:indj', contact us at your convenience. <br />Very truly yours, <br />BRAUN ENGINEEP TF `ING, INC. <br />• v �Q, <br />Dennis M. Rietschel <br />i Assistant <br />BraL. P.E. <br />resident <br />DMR/JSB:skf <br />cc City of Orono <br />Attn: Al Olson <br />Building Inspector <br />McCombs -Knutson <br />Attn: Greg Frank <br />The content Of Ihis report and supporting docu men is •r re for the saU usi.e use of the addressee In fhe aif ou, prnx written appal <br />we make no feprefentation and as, pine no responsibility to any whet parties regarding Such content <br />BRAHn" <br />ENGINEERING TESTING <br />