Laserfiche WebLink
iiy .f <br />March 16,1999 <br />ANDERSON-JOHNSON <br />ASSOCIATES, <br />INC. <br />Landscape Architecture • Site Planning • <br />Elizabeth Van Zomeren <br />City Planner/Zoning Administrator <br />City of Orono <br />P.O. Box 66 <br />Orono, MN 55323 RSCSIVED <br />RE: Proposed New Orono Middle School <br />Reconstmction of Orono High School <br />Orono, Minnesota <br />MAR 1 8 1999 <br />Cl IV u.- OnOiVO <br />Dear Liz: <br />As a quick response to some of the issues raised by your consultants in their review of the School <br />District’s CUP submission, we offer the following comments: <br />BRA Associates letter dated March 15.1999 <br />1.Access - Pedestrian crossings will be provided at the street crossings along Old Cr>'stal <br />Bay Road at the north and south intersections of the two school entrances. Likewise, <br />crosswalks will be painted at curb-cuts, pedestrian crossings, etc. at the proposed City <br />trail, building entrances, and the like. <br />2.Sanitary Sewer - Proposed sanitary sewer for the middle school will be designed as a <br />gravity feed to the existing manhole in Old Crystal Bay Road. Unfortunately, we <br />incorrectly labeled the inverts of the sanitar>' pipe as it exits the building and enters the <br />e.xisting sanitary sewer structure. The correct invert for the building service (BSl) should <br />be 1018.0 (5* below finished floor elevation). The invert at MH2 will be 1017.85 with 6" <br />PVC pipe sloping at 0.5% for the 555-foot run to the existing manhole (MHl). The new <br />invert will be 1015.07. Sanitary manhole castings will be per City standard (1642B). <br />3.Water Main - The connection of the proposed 12-inch DIP to the existing stub under Old <br />Crystal Bay Rd. will be by an open cut. The street will be restored per the City’s <br />requirements for typical compaction, street pavement section, etc. Regarding hydrant <br />spacing, we are waiting the Fire Marshall’s review, however, we appreciate Mr. <br />Kellogg’s comments regarding the hydrant spacing at the front of the building. <br />4.Storm Sewer - We will specify that storm sewer pipe below all paved areas and above 15 <br />inch diameter to be reinforced concrete pipe. Pipe in grassed areas and 12" diameter and <br />smaller will be RCP or PVC (contractors option). Calculations and associated drainage <br />sketches will be provided for the proposed stomi sewer system. <br />VALLEY SQUARE OFFICE CENTER • SUITE 200 • 7575 GOLDEN VALLEY ROAD • MINNEAPOLIS. MN 55427 <br />PH (612) 544-7129 • FAX (612) 544-0531