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Home My WebLink About2002-02-13 BRAA Ltr to OPHBonestroo 0 Rosene Anderlilc & Associates En & Architects Bonestroo, Rosene, Anderlil( and Associates, Inc. is an iative Action/E Opportunit Emplo and Emplo Owned Principals: Otto G. Bonestroo, P.E. ■ Marvin L. Sorvala, PE. ■ Glenn R. Cook, FE. ■ Robert G. Schunicht, P.E. ■ Jerr A. Bourdon, RE. Senior Consultants: Robert W. Rosene, RE. ■ Joseph C. Anderlik, RE. ■ Richard E. Turner, P.E. ■ Susan M. Eberfin, C.P.A. Associate Principals: Keith A. Gordon, P.E. ■ Robert R. Pfefferle, P.E. ■ Richard W Foster, RE. ■ David J. Loskota, PE. ■ Mark A. Hanson, PE. ■ Michael T. Rautmann, RE. ■ Ted K. Field, P.E. ■ Kenneth P. Anderson, PE. ■ Mark R. Rolfs, PE. ■ David A. Bonestroo, M.B.A. ■ Sidne P Williamson, PE., L.S. ■ A M. Rin M.B.A. ■ Allan Rick Schmidt, PE. ■ Thomas W. Peterson, PE. ■ James R. Maland, PE. ■ Miles B. Jensen, RE. ■ L. Phillip Gravel 111, PF. ■ Daniel J. Ed P.E. • Ismael Martinez, P.E. ■ Thomas A. S RE. ■ Sheldon J. Johnson ■ Dale A. Grove, P.E. ■ Thomas A. Roushar, P.E. ■ Robert J. Dever RE. Offices: St. Paul, St. Cloud, Rochester and Willmar, MN ■ Milwaukee, Wl it Chica IL F ebruar y 13, 2002 Website: www.bonestroo.com Ms. Kris Danielson Communit Development Director FIL copy Cit of Oak Park Hei 14168 Oak Park Blvd., P. 0. Box 2007 Oak Park Hei MN 55082-2007 Re: Wal Revised Final Development Plan Review BRA File No. 55-02-000 Dear Kris-, FFP 9 r - We have reviewed the revised final development plans and draina calculations for tin proposed Wal development at the northeast comer of Os Avenue and 60'h Street �4'. Our office last reviewed lans for this development on September 11, 2_001. The followin p �7 comments and/or recommendations pertain to the revised plans and draina calcuiations p re = lous comments still applicable are shown in italics): si- A.-.avout/ Access Locations: - _--j- I The northerl (main) access to the site off Os Avenue has been revisci-I to kee th-6-, 1 & CLL .,wa improvements entirel within Wal con's propert lines and a shayeei Y drip: e ay access with the dental office to the north. W ashin Co-unt prf vl(_ Us comments re the existin dental office drivewa area be sho.,�n ko-r_j tlie plaris for thllnl�ltli to anal how the existin and proposed ,Jrivewa will functtiorj tc) t:re Ch T it IS w' 11 n eed to be shown on the plans and the proxim't of these two drivw eays reN/ ie w,�Ad a n I %W b Washin Count The drivewa is shown as 36' wide, presurriabl from when this was to be a shared- access. Since this is now solel Wal access, -this drivewa can be narrowed to 2_4' to 28" unless lar deliver vehicle turni movements will be re w ide, C) wi 3. Washin Count and Mn/DOT have previousl approl,-'eci the rip-ht-in onl access, a-, loner Z_ as the fronta road will be closed, Pursuant to this, MiVDOTwill re an Access Permit and a permit to allow work within Mn/DOT ri for the proposed closinc, of and 4.__1 drivewa access into the fronta road. The developer should suppl copies of all peen -lit C� applications and approvals to the Cit 4. Min/DOT has also previousl indicated that since Os Avenue is Washini-,ton Coun,Lv &I q"- -.1 State Aid wa 5 t) Hi 24 an work on Os Avenue must meet St-ate Aid Standards and ZD d Specifications. This will include the proposed drivewa accesses, curb and arutt r installat-lon for closin off the fronta road, storm sewer st.,ructUn- modifications, and traffic control. C Z:) 2335 West Hi 36 x St. Paul, MN 55113 n 651-636-4600 ■ Fax: 651-636-1311 5 . Proposed landscaping in the green area adjacent to Osgood Avenue right-of-way falls within existing utility and sanitary sewer easements. Verbiage should be included in the developer's agreement so that the developer will be responsible for restoring surface improvements should any repair /modifications be required to the existing utilities encompasses by those easements. gran: 6. A retaining wall up to 13' in height is proposed along the majority of the east side of the site. A design for this wall, stamped by a registered engineer in the state of Minnesota, will need to be submitted for our review and approval prior to construction (Lan4form notes this in their September S, .2001 memorandum). Sanitary Sewer: 7. We recommend that the proposed sanitary sewer service wye into the existing sewer just downstream of the existing manhole to alleviate core chilling into the manhole and repouring the manhole invert. Verify preferred location with the City Public Works Department. 8. The plans do indicate to "`Coordinate the abandonment of all existing utilities and services with the City of oak Park Heights ", but we recommend the locations of any existing utilities be shown on the plans so the City has a record of this data. Wnfpr 111Tnin 9. As previously noted, we recommend that the proposed 6" water service connection to the existing main line be accomplished via a wet tap to avoid disruption of ilvater supply to adjacent businesses /residents. An 8 " x 6" tee cut into the existing water line could be constructed, but needs to be approved by the Public Works Director andlor Building Official, to coordinate shutting off valves andlor disruption of service to adjacent b usinesseslresidents. 10. Verify existing hydrant locations (needfor any new hydrants) and emergency vehicle access locations/widths with the Fire Department. .qtnrm .qP - % vP.r - 11. The drainage area calculations are acceptable with one clarification requested. After visually inspecting the site, we believe the 0.35 -acre drainage area on Osgood Avenue should be expanded to the west and the north to accurately include the entire area tributary to the existing storm sewer structures on Osgood Avenue. This drainage area could effectively double or triple, resulting in more storm water runoff through the walgreen's storm sewer system than the calculations currently show. This would, in turn, require upsizing or steepening the grade of the proposed 18" storm sewer under walgreen's parking lot. 12. The easterly curb & gutter of the parking lot has a lowpoint of 904.8 at the end of the proposed retaining wall. This curb & gutter will need to be tipped out or a catch basin installed at this lowpoint. If you have any questions regarding this review, please contact me at (651) 604 -4815. Sincerely, BONESTROO, ROSENE, ANDERLIK & ASSOCIATES INC f •� � t n Dennis M. Post] C - er, P.E. cc: Scott Richards — Northwest Associated Consultants, Inc. Kim Kamper, Acting City Administrator Jay Johnson, Public Works Director Jinn Butler, Building Official DMP, Pile — Bonestroo KA55\01dMalgreens. - Revised FDP Review_2- 13- 02.dae