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<br />MAYOR CRICHTON: Assuming no development or development <br />under those conditions. <br /> <br />MR. CHRISTOFFERSEN: Right. <br /> <br />. <br /> <br />MAYOR CRICHTON: We have so much going down there now that <br />it won't handle it. <br /> <br />MR. CHRISTOFFERSEN: That's correct. And the reason it <br />appears it's handling it is because of the tremendous amount of <br />ponding in that ditch and also currently pending in the freeway, <br />flooding the intersections at times. <br /> <br />COUNCILMAN JOHNSON: <br />and 50 year floods. This <br />design criteria? <br /> <br />We were aware of the' 100 year floods <br />36 inch now, as proposed, what is the <br /> <br />MR. CHRISTOFFERSEN: It's based on a five year frequency <br />storm. A type of storm that could be expected to happen once <br />every five years, although that's not a promise. It could <br />happen twice in one year. <br /> <br />COUNCILMAN McALLISTER: Are we getting any pressure from <br />the State to do this after it flooded badly in 1978 - because <br />they're concerned over their freeway? <br /> <br />MR. CHRISTOFFERSEN: Obviously the State is concerned. The <br />State requested some alterations to the plan as proposed in 1974. <br />This plan reflects those alterations. The plan in 1974 con- <br />sidered - was very similar in nature to this. The State has <br />proposed what I described - that they were going to construct - <br />primarily to protect their freeway from a 50 year storm. They <br />are planning to pay for this. As a result of that, what they <br />are doing causes us - it enables the design of this storm sewer <br />to be a smaller size than what was proposed originally. So what <br />the State is proposing is of benefit. There were some problems <br />with their picking up their fair share. I believe that they <br />are at this time and by doing what they propose to do, I be- <br />lieve, in my opinion, it reduces the overall cost to Shoreview <br />and Arden Hills and Ramsey County. <br /> <br />MAYOR CRICHTON: Any further questions? <br /> <br />. <br /> <br />COUNCILMAN JOHNSON: In a very preliminary manner we have <br />previously reviewed that combined 42 and the 48. I am aware of <br />the road coming down from the north, Grey Fox Road, and goes <br />into that 42. Then the additional 48, I guess I am still having <br />a little bit of a problem of just how much of that 48 is neces- <br />sary, recognizing that you have that 30/36 coming in from the south. <br /> <br />MR. CHRISTOFFERSEN: The 48 is necessary because the 42 <br />does not have the capacity to carry the projected flows, <br />beginning at the point of Grey Fox and Lexington. If it is pro- <br />posed, under this plan, to utilize the 48 and the 42 inch <br />(inaudible). In other words, in a five year frequency storm, <br /> <br />14 <br />