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I <br />L <br />1/1 Bonestroo <br />l^osene <br />vS Anderlik & <br />Associates <br />Engineers & Architects <br />February 6, 1996 <br />Bonestroo. Rosene. Af>Otfllk and Assooetes. me. It an Affirmacive ActtorVCqual Opportunity Employer <br />Ms. Jeanne A. Mabusth, <br />Building and Zoning Administrator <br />City of Orono <br />Post Office Box 66 <br />Ciystal Bay, Minnesota 55323 <br />Howard A Sanford. P.E. <br />Keith A. Gordon.. P.E. <br />RoOert R. Pfefferie. P E. <br />Richard W. Foster. P E <br />Oavid O. Loskota. P E <br />RoOert C. Russek. AI A. <br />Jerry A. Bourdoa P E. <br />Mark A. Hansoa P E. <br />Michael T. Rautmarwi. P E. <br />Ted K. Field. P.E. <br />Thomas R. Arsderson. A.I.A. <br />r Jamei R Rosenmerkei. P E. <br />I I ^^^onald C Burgardt. P.E <br />Thomas A Syfko. P£. <br />I \ Frederic J. Stenborg. P E. <br />Ismael Martinex. PX <br />Miciwel P. Rau. P.E <br />Otto Q. Bonestroo. PX <br />Robert W. Roserse. P.E.* <br />Joseph C. Andentk. PI. <br />Marvin L Sorvala. P E. <br />Richard E. Turner. PE. <br />GJenn R. Cook. PX <br />Thomas E. Noyes. PX <br />Robert G. Schunicht. P E. <br />Susan M. Eberlin. CP.A* <br />* Senior Consultant <br />Thomas W. Peterson. P E. <br />Michael C. L> nch. PX <br />James R. Maland. PX <br />Jerry D. PertXKh. P E. <br />Scott J. Arganek. P E. <br />Kenneth P. Artderson. P E. <br />MarkR Rolfs. PX <br />Mark A Seip. PX <br />Gary W. Morien. P E. <br />Paul J. Gannoa AI.A <br />Daniel J. Edgerton. PX <br />A. Rick Schmidt. PX <br />Dale A Grove. PX <br />Philip J. Caswell. PX <br />Mark O. Wallis. PX <br />Miles B. Jensen. P f, <br />L Phillip Gravel. PX <br />Karen L Wiemeri. PX <br />Gary D. Krlstofitz. PE. <br />Brtan K. Gage. P X <br />F. Todd Foster. P X <br />Keith R. Yapp. P X <br />Oouglaf J. Benoit. PX <br />Shawn O. Gustafson. PX <br />Ceciiio Olivier. PX <br />Kent J. Wagner. PX <br />Paul a Heuer. PX <br />John P. Gorder. PX <br />Dan O. Boyum. PX <br />Jeffrey J. Ehleringef. PX <br />Joseph X Rhem. PX <br />lee M Mann. PX <br />Charles A ErlcUon <br />Leo M. PawelsKy <br />Harlan M. Olson <br />Agrses M Ring <br />James F. Engeihardf <br />Re: Norbert Johnson Sketch Plan <br />File No. 139-2108 <br />Dear Jeanne, <br />We have reviewed the sketch plan prepared for Norbert Johnson on the proposed five lot subdivision <br />of Lot 2, Block 1. Heathercroft, located west of Wildhurst Trail in the west half of Section 7. There <br />arc several issues that need to be addressed relative to engineering matters and included with the <br />plan. <br />1. Utilities: Sanitary sewer will need to be extended north along Wildhurst Trail approximately <br />310 feet to the centerline of the proposed street and then northwesterly to the end of the cul- <br />de-sac. Plans and specifications should be prepared for the sanitary sewer, sewer service to Lot <br />3, and street reconstruction for Wildhurst Trail, with as-built plans provided to the City upxin <br />completion. As this sanitary sewer and street will be owned and maintained by the City, we <br />recommend that the design, bidding and construction be done by the City with assessments <br />levied to the development. <br />2. Street: The proposed street location appears acceptable. The grades leading up to the cul-de- <br />sac will be steep and may require a considerable amount of excavation. The driveway locations <br />will need to be looked at closely as they too will have steep grades. Plans should be prepared <br />for the street and storm sewer construction. <br />3. Grading: The topography shown on the survey is not adequate or correct. A grading, drainage <br />and erosion control plan should be prepared that shows both the existing and proposed <br />contours, building pad locations and elevations, and erosion control measures to be used during <br />construction. <br />4. Drainage: There arc two major drainageways running through the property. One is located <br />at the northern end of the site which drains northeasterly through Lots 4 and 3. The other is <br />located at the southern end of the site which drains easterly through Lot 5. Both drainageways <br />have a very high potential for erosion. The drainage plan for this subdivision should include <br />stormwater ponding to reduce the runoff flows and velocities leaving the site. Drainage and <br />ponding calculations should be provided for our review. Some type of skimmer structure may <br />need to be included at the pond outlct(s). A detail of the outlet structure and pond elevations <br />should be shown on the plan. The plans should be submitted lO the Minnehaha Creek <br />Watershed District for their review and approval. There does not appear to be any wetlands or. <br />this portion of Saga Hill. <br />2335 West Highway 36 ■ St. Paul, MN 55113 • 612-636-4600