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559-3535 <br />pgMarch 24, 1977 <br />ixcavation <br />m of spoil <br />and depth <br />i. <br />D CHANGES <br />sea level <br />datum <br />Neater level <br />f^AhllC O. ^RANKOSICVJR. <br />mnocli m. act <br />CawiHtva Vict <br />JIMO. IRAUCMCR <br />Vicf Retidtni <br />CMARLf S C. HANSEN <br />Sccttianr <br />..............—f tm. <br />jCj^Rg^GINEERrNG COMPANY □ ?R1S WAYZATA BLVD. □ MINNEAPOLIS. MN. 55405 □ (612) 3744740 <br />LA«RV G. McMURTHV <br />TfMfyr«f <br />•RUCI R. ICC lLCV <br />Aiioctat# <br />OAVION MclNARy <br />Aiiociaif <br />LESLIE G. RENSC hlER <br />Auocittt <br />• i • « <br />April 11, 1977 <br />Minnehaha Creek Water Shed Jistrlct <br />Eugene A, Hlckok & Associates <br />Mir* John Holnquist <br />545 Indian Mound <br />Wayzata, MN 55391 <br />17ir ^ 0 <br />Gentlemen: <br />Suburban Hennepin County Area vLatioLl Tech i* <br />Dlsmct 287). The bridge, which will be School (Independent School <br />needed to connect neighboring fields Lparated equipment, is <br />easy access to the farm land east of ^ creek. This would permit <br />shown in Figure One. A concern has beenRoad and lorth of the creek as <br />Shed District as to the possibility of the Minnehaha Creek Water <br />storm. This study is to determine th. „ inundated by a design <br />rise at the proposed bridge site for the^bri^e width the creek will <br />storm. ^ bridge during a potential 100 year <br />The report is divided into two <br />nation of the peak rate of flow in the^L^f study. The first is the determi- <br />site. The second area of study is the dete™*^*^^™ proposed bridge <br />and width the water In the creek will rise at the"e^k r«e off 1^. <br />^termination of the PEAK RATE OF ft nu <br />The Rational Method was used to *-u <br />th° method calls for the^'drain^^^ during a potential <br />.s .1 -1 x^e°d --““h <br />on the Euture development e.ected^ In th‘e° <br />CONSULTING ENGINEERS <br />STRUCTURAL • CIVIL <br />LAND SURVEYING <br />400 SIBLEY <br />ST. PAUL, MN. 55101 <br />(612) 291-7000 <br />310 SOUTH LINCOLN STREET <br />ABERDEEN, S.D. 57401 <br />/60RI <br />Hi <br />n <br />4 <br />iwii n iTPiii <br />Minnehaha Creek Wate <br />April 11, 1977 <br />Page 3 <br />SUMMARY AND CONCLUSI <br />1. A 20 foot wide b <br />creek. <br />2, A 24 foot wide b: <br />of creek. <br />This is assuming the <br />Yours truly.cu ^ <br />Bruce R. Kelley, P.E. <br />BRK/ja <br />Enclosures <br />cc: Armstrong, Torse: <br />West Campus Subu: <br />Technical School