10-28-1996 Council Packet - Laserfiche WebLink

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1/1 Bonestroo Rosene m Andcrlik &. Associates Engineers & Architects January 5, 1995 Ms. Jeanne A. Mabusth, Building and Zoning Administrator City of Orono Post Office Box 66 Bonestroo. Rosene. Anderiik end Associates, me is an Affirmative Action^ Equal Opportunity Employer Otto C Bof>estroo. P £ Robert W Rosene PE • Joseph C Andeflik. P E Marvin L Sorvaia. P E Rich^d E Turner. P E Gienn R Cook. P E Thomas E Noyes. P E Robert G Schunicht, PE Susan M Eber lin CPA* * Senior Consultant Howard A Sanford. PE Keith A Gordon.. PE Robert R Pfefferie PE Richard 'Ji/ Foster. P E Oavid O Loskota PE Robert C Russek. AIA Jerry A Bourdon. PE Mark A Har^son. P£ Michael T Rautmarm. PE Ted K Field. P E Thomas R Anderson. AI A James R Rosenmarket. PE Donald C B ifgarcst. P E Thomas A Syfko. PE Frederic J Sienborg. P E tsmaei Martinet. P E Michael P Rau. P E Thomas Sfr Peterson. P.|. Michael C lynch. P E James R Maiand, P E Jerry D Fertiich, P E Scott J Arganek. PE Kenneth P Andersoa PE Mark R Rolfs. P.E Mark A Seip. P E Gary W Mofien PE Paul J Gannon. A t A Daniel J Edgerton. P E. A Rick Schmidt. P £ Dale A Grove P E Philip J Caswell. P E Mark 0 Wallis. P E Miles B Jensen. P E L Phillip Gravel. P E Karen L Wiemeri. P E Gary D Krisiofiu. PJ. Brian K Gage. P E F Todd Foster. P E Keith R Yapp. PE Douglas J Benoit. P£ Shawn D Gustafson. P.E. Cecillo Olivier, P E Kent J Wagner. P E. Paul G Heuer, P E John P Gorder. P E Dan O. Boyum. P.E. Jeffrey J Ehieringer. P i. Joseph R Rhein. P E Lee M Mann. P E Charles A. Erickson Leo M Paweisky Hartan M Olson Agnes M Ring James F Engeihardt Crystal Bay, Minnesota 55323 Re; Orono Ice Arena File No. 139-2103 Dear Jeanne, 'JAN S 1996 A • I t . V • * it ^ We have reviewed the schematic design for the proposed Orono Ice Arena located west of Old Crystal Bay Road and south of CSAH 6 in the southwest quarter of Section 28. There are several issues that need to be addressed relative to engineering matters, and added to the plan set. Both sanitary sewer and water main will need to be extended north along Old Crystal Bay Road for service, assuming that the City ’s Comprehensive Plan amendment is approved by the Metropolitan Council. Due to the elevation of the site, wastewater should be pumped from a grinder pumping station through forcemain to the existing gravity sewer. An 8-inch DIP water main should be extended from the existing water main to the northwest corner of the site for a future connection to the City of Medina ’s water system. A 6-inch service line and hydrant should be extended within the site. We do not recommend 4-inch copper for the domestic water piping due to the high cost. Plans and specifications should be prepared for the sanitary sew’er and water main extensions, with as-built plans provided to the City' upon completion. The existing sanitary sewer and water main are located approximately 400 and 1100 feet south of the property', respectively (see Record Plan A132). There are two wetlands on the site which have been delineated. The wetlands are regulated by the Minnehaha Creek Watershed District (MCWD) at the State level as part of the \Vetland Conservation Act (WCA), and under the jurisdiction of the U.S. Army Corps of Engineers (COE) at the Federal level. It appears that both wetland areas may meet the requirements for a WCA exemption. The applicant should obtain such exemptions or permits that may be necessary from the MCWD and C DE for filling or draining the wetland areas. The proposed drainage on the site is directed northeasterly through a proposed stormwater pond to an existing culvert. This concept is acceptable. Drainage and ponding calculations should be provided for our review. We recommend that some type of skimmer structure be included at the pond outlet. A detail of the outlet structure and pond elevations should 2335 West Highway 36 ■ St. Paul, MN 55113 ■ 612-636*4600