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Home My WebLink About2004-10-16 BRAA CommentsBonestroo Bonestroo, Rosene, Anderlik and Associates, Inc. is an Affirmative Action/E Opportunit Emplo and Emplo Owned Rosene Principals: Otto G. Bonestroo, RE- • Marvin L. Sorvala, RE. ■ Glenn R. Cook, RE, • Robert G. Schunicht, RE- Anderlik& Associates Jerr A. Bourdon, RE. ■ Mark A. Hanson, RE. Senior Consultants: Robert W. Rosene, RE. - Joseph C. Andedik, 4-a-5_usan M. Eberlin, C.P.A. rA- Associate Principals: Keith A. Gordon, RE. ■ Robert R. Pfefferle, i ( 1 PE- ■ Michael T. Rautmann, RE' • Ted K. Field, RE. • Kenneth R Anderso Mark R. Roffs, n M.B,A. E n & Architects Sidne R Williamson, RE., L.S. • A M. Rin M.B.A. • Allan Rick Ct I t PE, • Thomas W. Peterson, RE. James R. Maland, RE. • Miles B. Jensen, RE. L. Phillip Gravel III, ;ef'J..Ed RE. • Ismael Ma i e E. ■ Thomas A. S RE. ■ Sheldon J. Johnson ■ Dale A. Grove, RE.. s A. Roushar,,iPE Robert ,J. D Offices: St. Paul, St. Cloud, Rochester and Willmar, MN • Mi1vv I • Chica IL Website: www.bonestroo.com October 16, 2004 Mr. Eric Johnson, Administrator Cit of Oak Park Hei 14168 Oak Park Blvd., P. 0. Box 2007 Oak Park Hei MN 55082-2007 Re: HSI (Home Free Apartments) Concept Plan Review BRA File No. 55-04-000 Dear Eric: We have reviewed the concept development plans and stonn water calculations for the proposed Home Free Apartments development on the west side of Panama Avenue N. across from 64 th Street N., as submitted b Cen-nak Rhoades Architects, and have the followin comments/recommendations for y our consideration: Site La i y out/Access Locati ons: 1. The proposed drivewa access location is in basicall the same locations as the existin access and is acceptable as shown. Grading & Draina Sewer: 2. The storm water calculations are acceptable as submitted. 3. Storm water runoff from the majorit of this development will be tributar to a proposed rain g arden within the westerl boulevard of 64th Street North. In essence, this rain g arden will function as a small storm water pondin area and rel on infiltration to handle the increase in storm water runoff from the proposed development. Rain g ardens are desi to infiltrate but also t incorporate a storm sewer collection s underneath to ensure storm water runoff removal. In this case, there is no existin storm sewer in the area to connect to, so the rain g arden is rel completel on infiltration. The Cit should be aware that if the rain g arden infiltration fails to function as assumed, or is inundated durin ver lar storm events, excess storm water runoff will overflow the rain g arden to Panama Avenue N. and then northerl alon Panama Avenue N. and/or easterl down 64th Street N. 4. Additionall the proposed rain g arden location is within the public street ri of Panama Avenue N. Storm water ponds servin private developments are t not allowed within public ri Rain g ardens are sometimes allowed in public ri wa if incorporated into existin ditch s in rural t street areas, which is not the case here. As such, we recommend the rain g arden be moved westerl out of the Cit public street ri unless the Cit will permit the rain g arden in its current proposed location. 2335 West Hi 36 & St. Paul, MN 55113 ■ 651-636-4600 n Fax: 651-636-1317 5. As noted in the Cit of Stillwater 's September 9, 2004 internal memorandum,, the location and a detail of an overflow swale for the proposed rain g arden should be shown on the plans. 6. Silt fencin is shown on the demolition plan. We recommend the silt fence be extended alon the entire easterl ed of the parcel. Additionall more detailed sediment and erosion control items ( Includin g , but not limited to, the silt fencin a rock construction entrance, storm sewer inlet protection and areas of seedin and/or soddin restoration). 7. The proposed catch basin in noted as includin a sump, but the detail indicates the sump be filled with concrete to the outlet flow line. This defeats the purpose of the sump. We recommend a 2' sump be incorporated into this catch basin to help with storm water runoff sediment removal prior to enterin the rain g arden. Sanitar Sewer: S. The proposed 6" sanitar sewer service connection to the existin sanitar sewer manhole shall be made via core drillin 9. A minimum 18" separation should be maintained where the proposed sanitar sewer service will cross under the existin water main in Panama Avenue N. Water Main: 10. The proposed 6" water service shall be connected to the existin water main in Panama Avenue N. via wet tap. The Oak Park Hei Public Works Department should be notified 48 hours prior to this connection bein constructed. Miscellaneous: 11. 64th Street N. and Panama Avenue N. shall be restored full-width where the sanitar sewer and water service installations will be occurrin 12. Demolition and restoration will be takin place to the public street, curb, and boulevard within the Panama Avenue N. and 64th Street N. ri for the new drivewa access and sanitar sewer and water service connections. Based on these plans, we recommend the Cit obtain a Letter Of Credit from the owner/developer for $13,125 ( $10,500 x 125%) to cover the costs associated with these improvements and Cit inspection. If y ou have an q uestions or re additional information, please contact me at ( 651 ) 6044815. Sincerel BONESTROO, ROSENE, ANDERLIK & ASSOCIATES INC Dennis M. Postlerl P.E. cc: Jud Holst, Finance Director Tom Ozzello, Public Works Director Jim Butler, Buildin Official Julie Hultman, Communit Development Scott Richards, Cit Planner Mark Vierlin Cit Attorne Kath Widin, Cit Arborist Larr Prinds — Cermak Rhoades Architects DMP, KSE, DDH, File — Bonestroo & Associates K:\55\Old1HSI - Home Free—Concept Plan Review— 10- 16-04. doc