11-17-1997 Planning Packet - Laserfiche WebLink

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r BONESTROO AND ASSOCIATES ^612 6361311 11/1A/97 10:53 0 :02/02 NO:162 Bonestroo Rosene Ancksrlik & Associates •• " ...... • n -------- --------- ^ ‘ ........................ '! •'- •f'-.i. ,i ............ ^ ......... ...... * M ............ , »4 A n A ........... I*,.,,..,, .—ur.;:, r. ;,r; • Engineers & Architects November 13, 1 997 • <f CAi.l « .,,ij j. ( mn . Ms. Cli/iibeth Van Zometcii Cily Planner/Zoning A»lniiniiUuior City of Orono Po« Office Boa 66 Crystal Bay. Minnc«)C;i 55323 Lake Minnetonka W<H>d<« File No. l.19-2.3f'H Dear Liz. lu ^ ^ ^ ‘*"‘*"* "ccepublc from an engineering standpoint Details w" Hexpctiuilon is that Livmgi.un Avenue will be cxlcndoTwesi^^ nr . V ’extending the sani.ary and water main stubs to the west property line v**!."**^* iitea map should include the boundary for flowk to the northerly wetland and CB 35 to"r “ K.! ri*f: a» „r .r=si.rfrsr krik« e. t I . 7 \yr—inc aiiinunuic lime oi conccnlTttli^d for some of the Culculaiion* »com$ high for thi» »ite. We would recommend revmng the storm sewer and poking valtulaiions lot ik ulojted conditions using a maximum time ol ctmceniraiion of 1 5 minutes Pipe grades «.d / or pipe Siee. I^iwcvn CB52 and STMH 31 i.»y need to bc revised. A paved Swale or some type of wrimi contro measure should he piovided at the downstream end of the H-iiwh HDPE pipe. Details of th^nd outlet cont^i .trwure and bnUlcd ;.cir should bc provided for review. The timber we^r may be a future nSuJ^i^e ?n ??**?.' *^.1? T'" •e'*Vorary cul-de-sac on Livingston Avenue exceej.s the maximum of CitvTia'ndi^rfhorizontal alignment proposed lor Livingiton Avenue does not meet the AII^JL ^ ^ ^ mpb design. The radii should be increased to 275 feet or reduced speed warning signs installed constfSm\hi‘w«?'i "1 M “*'*^“‘* recommend ihai Liv,ng«o5 Avenue beconsir^icd to the wesk .iy loi line as part of this project. The proposed driveway to serve the 11 units on Blocks ^ 'h‘.‘ City design standards for private sueeu relative to right-of-way width, minimum rwi?^.tobl^'LTril "r", h"‘ n ““ "" “ Emergency vehicle access to those units on Blocks 3 and secdons sh^nM ll o P>«ms with the appropriate emergency officials. Typical street ^c^ZetL, h «*“* ““ ‘Jr've. A geoicchnicol analysis and R-valucrecummenJaimii should lie suhmiiied to verify the proposed pavement design. Please contact me at 6(U 4X(*3 it you have any questions regarding this niaiter Vours very truly, BONESTROO. ROSENl ANDERLIK. & ASSOCIATES. INC /<yr»i Tom Kellogg 2335 West Highway 36 • St. Paul. MN 55113 • 612-636*4600 • Fair-