06-26-2017 Council Packet - Laserfiche WebLink

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MINUTES OF THE ORONO CITY COUNCIL MEETING Monday, June 12, 2017 7:00 o'clock p.m. 22. #17-3939 JOHN BAILEY, 2807 CASCO POINT ROAD, CONDITIONAL USE PERMIT — Continued Curtis stated they have not, but that she believes Mr. Bailey is saying that the plan has been developed with an engineering mind but without the certification. Bailey stated engineers have their requirements or codes that they have to live by. If the City was going to build a road or a public building, then the City would need to have engineers sign off on it because there is danger of someone from the public getting hurt. Bailey noted this is a residence where there have been three washouts. Bailey stated this plan will put the slope back together as good or better than it was and that he is trying to improve or correct what nature did. Bailey stated he is not refuting engineering principles. Walsh stated there is a steep grade there and that there needs to be a solution arrived at. Walsh stated he does not want to impose a quarter million dollar solution and that the property owner does not want to see further washouts but that the City Council and engineers have to follow certain rules. Dankey noted there are other similar situations on the lake. Walsh commented he does not want to see the situation become worse and that the soil borings show there are pretty stable soils. Seals stated the Filtrex system does look like great bank stabilization but that she is not sure how that will work in conjunction with the pipe underneath and how the size of the pipe was determined. Seals noted Filtrex calls for a 2:1 slope and asked what the applicant is proposing. Seals commented she wants to protect the property owner from having further damage without having to cut the whole yard back. Ron Anderson, Final Grade, noted they have done a number of projects on Lake Minnetonka, such as the Wayzata Muni, and that they are attempting to come up with a landscape solution to help address the problem. Anderson stated they will have to export the dirt since the soils are extremely saturated and get down to a firm base. Anderson indicated they will place some solid clay in there, which will be compacted in, and that the Filtrex will help to stabilize the slope rapidly. The Filtrex will not change or become the structure of the slope. Seals asked how the Filtrex will work with the pipes. Anderson indicated the pipes will go below the Filtrex. Anderson stated the big reason the slope failed in those two areas is the drainage split and the water came down continuously resulting in the slope failure. Anderson stated the pipes will take the drainage away from that slope. Crosby asked how many culverts there will be. Anderson indicated there will be two. Seals asked what slope they are recommending. Anderson stated the existing slope is less than 1: 1 and that they will keep it to just under a 1: 1. Anderson stated matching the property comers at the neighbors will be a challenge since they are steeper than this Page 10 of 19