11-25-2002 Council Packet - Laserfiche WebLink

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J/ J Bonestroo gjg Rosene V ■ Anderlik & Associates Engineers & Architects October 1,2002 Mr. Mike Gaffron Planning Director City of Orono Post Office Box 66 Crystal Bay. MN5S323 ■encfcroo. ffofcr>€. A««dtrfik snd Aiio<l«tct, Inc. Ii »n AfrifftiEiivc ActloiVfquEt OpA^fwnfty tmpleycr and Employ** Own*tf I Principalt: Ono a ■on*ttroo. P.C. • Mjrvin L Sorvofa. PJ. • Glonn * Cook. PE. • tS ^ I Robert a SciHjnIcm. P.E. • Jtrry A. Bourdon, PJ. Senior Conttiltantf: Robert W. Roser>*. PE. • Joicph C Andertik. PX • Ricttjrd f. Ibrrter PX • Susan U Eberiin. CPA. ^ Aisoclat* Principals: Howard A. Sanford. PX • Keitn A. Cordon. PE. • Robert R. Preffert*. PE. • Richard W. Poster. PX • David O. Loskota. PX • Robert C Rustek. A.1A. • Mark A. Hanson, pj, • Michael T. Rautmann. PX • Sed ILPiefd. PX • Kenneth P. Andersoa PX • Mark R. Roifi. PX • David A Ron*stroo. M^A • Sidney P. Winamson. PE. LI • Agnes M. Rirsg. M BA • ARan Rkk SctvnidL PX Offices: St Paul. St Cloud. Rochester and UOlimar. MM • MRwaukee. WI U^bslte: wwwbonestroo.com • / Re: Stonebay PUD Master Plan, Phase I File No. 1 39-02 000 Plat No. 02-2789 Dear Mike: We have reviewed the PUD master plan for the proposed Stonebay development The site is located in the northwest quadrant of the intersection of Willow Drive and TH 12. The proposal provides for a mix of residential housing and future commercial development. We have the following comments in regards to engineering matters. 1. Sanitary Sewer: The City should review MnDOT plans and schedules for utility improvements as pan their T.H. 12 improvement project As noted in our previous review comments the sanitary sewer between T.H. 12 and the railroad tracks will need to be upgraded to serve the ultimate developntent of the Stonebay site. The plans should identify Ijow sanitary service will be provided to Outlot A. The sanitary sewer manhole details should be revised to include an Infi-Shield exterior sealing system or approved equal. 2. Water Main: Hydrants should be installed at all high points in the system. Stainless steel bolts shall be used on all hydrants. All water main bolts shall be stainless steel or Cor-Blue t-bolts with protected caps. All water main ir.iUllation sh.'ill be in accordance with City standards. 3. Storm Sewer: This latest plan set does not show relocating the downstream pipe from the ponding area north of T.H. 12. We recommend the pond outlet pipe be relocated westerly to align with the existing notth/south ditch along the west side of the golf dome. As noted in our previous letter, the golf dome experiences parking lot and building flooding during heavy rain events. The realignment of the pond discharge will eliminate two bends in tlie ditch and divert storm water away from the golf dome parking lot A minimum of 2-feet of freeboard should be provided between a!i basement elevations and pond high water levels. Grading plans should include 100-year high water elevations and rroposci; emergency overOow elevations and locations for all wetlands and ponding areas. A drainage a.*ca nap. stor a sewer and ponding calculations should be submined for our review. Erosion control plan comments will follow under separate cover. The wetland delineation report should be submitted for review. Final plans should be submitted to the Minnehaha Creek Watershed District ^!C WD) for their review and approval. 4. Streels/Trails: We recommend a minimum radius of SOO-feet for all horizontal curves on Kelley Parkway to provide an added measure of safety and improve sight distance. Plans should include vertical curve information. The riglii-of-way width shown along the e.astcrly SOO-feet of Kelley Parkway is inadequate for the proposed street design. The right of way w idth should be increased to provide a minimum of 15-feet behind the back of curb. A center northbound left turn lane and southbound right turn lane should be constructed on Willow Drive as port of this project The trail shown along Willow Drive north of Kelley Parkway should be realigned to intersect with Kelley Parkway at the intersection with Willow Drive. The plans show a trail and sidewalk adjacent to each other along the south side of Kelley Parkway north of the pond. It is unclear why a trail and sidewalk are necessary. The trail along , Willow Drive south of Kelley Parkway should be consuuctcd to T.H. 1 2 as part of this project The design guideline for Kelley Parkway on Sheet C2.2 shows a 5-foot sidewalk directly behind the curb. The City should review and ectmment whether this is adequate for snow storage. The same design guideline show3 a 5 -foot “trair on the other side of the street all "trails” should be const. u>‘ied to a minimum width of 8-feet A geotechnical report R-value recommendation and pavement design should be pnwided for review. 2335 West Highway 36 • St. Paul, MN 55113 ■ 651*636-4600 ■ Fax: 651-636*1311