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Bonestroo 2335 West Highway 36 • St.P�ul, MN 55113 ; <br /> ROSeIIe Office:651-63G-4G00 ■. F�x: 651-636-1311 <br /> Anderlilc& www.bonestroo.com . ' <br /> Associ�tes � � ' <br /> Engineers&Architects . <br /> �������� <br /> � June 14,zoo6 ,UN ,��� Zp06 � <br /> Ms.Melanie Curtis Y �F ORQ�O <br /> Planner . (',�� <br /> City of Orono <br /> Post Office Box 66 <br /> Crystal Bay,MN 55323 <br /> Re: 2690 Rainey Road . . <br /> � File No. 000139-06000-1 . <br /> Plat No. 06-3204 � <br /> Dear Melanie: � <br /> We have reviewed the survey dated 5-30-06 for the proposed improvements to 2690 Rainey Road.The plans <br /> show several proposed additions to the existing house, a proposed driveway addition, a small proposed <br /> building,�and associated grading.We have the following comments with regards to engineering matters: . <br /> '. • �The proposed grade to the east of the proposed building appears to exceed the maximum allowable <br /> slope of 3:1. A retaining wall may necessary to achieve allowable slopes. <br /> � • Rain gutters should be installed on the home to direct water away from adjacent properties, .� <br /> particularly along the east side.of the property. Rain"gutter locations should be shown on the plans. ` <br /> • Plans should include existing and proposed lowest floor elevations. , <br /> • The plans should clarify the location of the proposed 954 contour line crossing the existing driveway. <br /> It does"not appear to tie into the existing 954 contour. . , � <br /> • The plans should.show proposed driveway grades.Driveway grades should not exceed 10%. <br /> • A rain garden or ponding area should be constructed to the west of the proposed culvert. It should be <br /> _ sized such that the proposed runoff rate off the properry does not exceed the existing runoff rate. A <br /> 'drainage area map and associated drainage calculations for the 2, 10,and 100 storm events should be � <br /> provided�'or?x?sting and prenosed conditions. ' <br /> • If the alternate septic site shown on the plan is to be preserved as an altemate site,all silt fence and, <br /> associated grading should be located such that it does not encroach on any part of the alternate septic <br /> site. <br /> If you have any questions please call me at(651) 604-4863. . <br /> Yours very truly, "~ <br /> BONESTR00,ROSENE,ANDERLIK&ASSOCIATES,INC. <br /> �G''y-'r� � <br /> Tom Kellogg <br /> St. Paul, St. Cloud, Rochester, MN • Milw�ukee, WI • Chicago, IL <br /> Affirmative Action/Equal Opportunity Employer and Employee Owned . <br />