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Bonestroo,Rosene,Anderlik and Associates,Inc.is an Affirmative Action/Equal Opportunity Employer Bonestroo and Employee Owned Rosene Principals:Otto G.Bonestroo.P.E.- Marvin L.Sorvala.P.E.-Glenn R.Cook,P.E.-Robert G.Schunicht.P.E.- r Jerry A.Bourdon,P.E.- Mark A.Hanson,P.E. Anderlik& Senior Consultants:Robert W.Rosene.P.E.- Joseph C.Anderlik.P.E.-Richard E.Turner.P.E.- Susan M.Eberlin.C.P.A. Associates Associate Principals:Keith A.Gordon.P.E.-Robert R.Pfefferle.P.E.-Richard W.Foster,P.E.-David O.Loskota.P.E.- Michael T.Rautmann,P.E.- Ted K.Field,P.E.• Kenneth P.Anderson,P.E.-Mark R.Rolfs.P.E.- David A.Bonestroo.M.B.A.- Sidney P.Williamson.P.E..L.S.-Agnes M.Ring.M.B.A.-Allan Rick Schmidt.P.E.- Thomas W.Peterson,P.E.- Engineers&Architects James R.Maland.P.E.- Miles B.Jensen,P.E.- L.Phillip Gravel Ill,P.E.- Daniel J.Edgerton,P.E.- Ismael Martinez.P.E.- Thomas A.Syfko,P.E.- Sheldon J.Johnson- Dale A.Grove.P.E.- Thomas A.Roushar.P.E.- Robert J.Devery.P.E. Offices:St.Paul.St.Cloud.Rochester and Willmar.MN-Milwaukee.WI-Chicago,IL January 22, 2004 %*bsite:www.bonestroo.com Mike Gaff'ron V ��— �l ►n��J C Planning Director City of Orono1 1 ) Post Office Box 66 SD a C r IV, 4 9- Crystal Bay,MN 55323 3 UV o,kQrUU h '(_as Re- 3220/3240 Watertown Road , Plat No. 04-2971 File No. 139-04-000 L Dear Mike, 3 30 W A-V c�a w vitD aA We have reviewed the preliminary plans for the proposed two lot subdivision on the site located at 3220/3240 Watertown Road.The proposed use is for single-family homes.The two lots will be served by a single shared driveway constructed across Outlot A. The driveway to serve Lot 1 requires the construction of a creek crossing and culvert installation. The creek crossing results in some wetland impacts and mitigation will be necessary. We have the following comments in regards to engineering matters. • The proposed culvert size appears to be acceptable however we recommend the culvert be an arch RCP so as to reduce the overall height of the structure. • The low point on the driveway at the creek crossing should be lowered from 73.0 t 972. o provide adequate freeboard for the home on Lot 1. • Plans should be submitted to the Minnehaha Creek Watershed District for review and approval. • Final plans should include plan and profile views of the driveway from Watertown Road to the proposed home site on Lot 1. The finished driveway should be paved and the plans should include atypical driveway section. Driveway grades should not exceed 10% at any location. • Plans should include storm water treatment provisions. This might include best management practices (BMP's)such as filter strips,buffers, infiltration areas, etc. • Driveway easements should be in place for Lots 1 and 2 across Outlot A. • Erosion control measures should be installed,inspected and approved by the city prior to any work on site. • The fire chief should review and comment on the access,particularly to Lot 2. Please contact me at(651)604-4863 if you have any questions regarding this Yours very truly, Ian g0rwiw�BONESTROO,ROSENE, ANDERLIK&ASSOCIATES, 3 oil Tom Kellogg Cc: Greg Gappa,City of Orono ��ed 6troti6Er okc / 01 ti Inn k d 1n 1.J �� d �- �� U t n 2335 West Highway 36 - St. Pa MN 551 3 ■ G51-63G-4 00 ■ Fax: 651-G3G-1311 ` a 1 al le P