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■j’ <br />Hcui^iUoix, H<yUtie, & /hicciafcd, !f,KC, <br />2335 W. *Juuik Jii^Juvatf 36 <br />St Pout, MluuoioU 55ff3 <br />Pttcut 636-^600 <br />QouXultln^ ^H^ZuceAi <br />C/M C F • ifl/'P**, fX. <br />Ke*,ft II* r r-.e PE. <br />ti'.rfhC P.E <br />lud c»d A Lefnbe^t P.E. <br />D Frli^ud PE <br />Ptthitd f Turner. P.E <br />ta-ne$ C Ohon P E. <br />leureize F. Pe!dslen. PS. <br />G'.en/t R Co.'k. PE. <br />Kruk 4 CcrdoH. P E <br />Tkcr^u E. S^yes. PS. <br />Rir\3-d If*. Fetter. PE. <br />Mctert G SeSurUkt. PE. <br />t. Scr\ata P.E. <br />C Pu'gfi'Jt P.E <br />Ffn^eth R. Memer, P.E. <br />Chzflet A Erickiom <br />January 12, 1979 <br />City of Orono <br />Box 66 <br />Crystal Bay, Mn. 55323 <br />A <br />UXLU.JZO <br />O Q.o <br />Lee M. Pat*f!iky <br />Harlan M. Oltem <br />yl$EWE[| <br />Attn: Mr. Alan Olson <br />JAN 15 1979 <br />Re: File No. 139-436 <br />Halzer <br />2677 Casco Point Road <br />CITY OF ORONO <br />Dear Alan, <br />We have reviewed the wall construction on the Halzer property relative to <br />drainage and potential erosion problems. The construction of the wall <br />retain precipitation on the Halzer property and generally drain west <br />to the lake. This will not cause any hardship on adjacent property owners. <br />The construction of the wall will create erosion problems as all water <br />from the lot will now be directed towards the lake over the recently dis­ <br />turbed soils. <br />We would recommend that the excavated material below the wall be pulled <br />back to support the wall and the ground cover established as soon as possible <br />in the spring. <br />The disposal of the storm water from the lot should be addressed by the home <br />owner but we would recomend some type of coarse rock filtration percolation <br />system adjacent the retaining wall with excess water from heavy rainfalls <br />being allowed to spill over the length of the wall. <br />Yours very truly, <br />BONESTROO, ROSENE, ANDERLIK 6 ASSOCIATES, INC. <br />Glenn R. Cook <br />GRC:li