08/29/2001 Env Bd Packet - Laserfiche WebLink

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AGENDA ITEM 5B STAFF ORIGINATOR: Marty Asleson DATE: August 29, 2001 TOPIC: Centennial School District/New Elementary School /Site Plan Review BACKGROUND: Centennial School District has submitted plans to build a new elementary school in Lino Lakes. The site chosen for this new school is north of, and immediately adjacent to, Centennial Middle School on Elm Street. The site is approximately 21.76 acres. The site is zoned as Light Industrial (LI), and is proposed to be rezoned to Public /Semi- Public (PSP). The site plan was received on August 13, 2001. Staff has had one chance to look at the submitted plan since it came in. Many questions have surfaced from traffic flow to environmental issues. I have enclosed the smaller maps in the packet. I will bring the larger more readable maps to the meeting. The GIS shows an area out of the flood plane, with Isanti Wet soils generally where the wetland line is shown on the maps. Although the AES vegetation classification shows this wet soil as reed canary grass, there are some small areas on the fringe that appear to have a bit more plant diversity. The Lino Lakes Handbook for Conservation Development sites a recommendation to have a buffer around the wetland area on the West side of the site. The site is in a Lake Protection Zone. Water in an area on the NE corner of the site is labeled as MALSW. This area ultimately drains to County Ditch 10 through storm sewers. The area of the site to the South and East side of the site is labeled as CD10S in the Surface Water Management Plan. This is a small watershed, which contains the final portion of County Ditch 10. County Ditch 10 empties into the North side of Marshan Lake. Reccomended action in 1994: High Priority to perform drainage study to determine flow rates from water shed in MALSW, and High Priority to perform drainage study to determine drainage system on both sides of Lake Drive. The Assumption in 1994 was that Lake Drive drains North to CD10, and the recommendation was made to study other conveyance needs in the watershed. Since this study, we have started addressing not so much conveyance, but the idea of surface water management, Stormwater Treatment Train, infiltration, etc., in addition to the notion of water