CC MINUTES 07121988 - Laserfiche WebLink

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1 either because there's not enough land available for the first or 2 because of the low elevation of Silver Lake Road when compared to the • 3 elevation of the park. The only area large enough to accommodate a 4 240 X 240, 9 foot basin which would have to be deep enough to hold a 5 ten year storm overflow, would be in the shopping center the City is 6 trying to redevelop for housing, which the engineer estimated would 7 cost $560,000 to construct in addition to the hundreds of thousands 8 of dollars Mr. Childs had estimated the City would have to pay for 9 the land. 10 Mr. Folen commented that it didn't seem reasonable to spend a couple it million dollars to prevent $4,000.00 or $5,000.00 in damage to two or 12 three homes on St. Anthony Boulevard. He added that, if such a pond 13 were contemplated, a detailed topographic survey would have to be 14 taken to find out who else might be affected if the pond should flood 15 and safety of the pond would also have to be a concern. St. Anthony 16 might also have a problem trying to sell sending the overflow 17 spillage down through the Highway 88 trunk line to Minneapolis. 18 Enlarging Wilson Street Pipes Would Also be Very Expensive 19 Mr. Folen reiterated how expensive the above would be and wondered if 20 instead the City might want to look towards flood proofing the homes 21 in the area which are the most apt to be affected by the next big 22 storm. He indicated homeowners who realize their properties might be 23 in danger could raise their garages and pour new slabs. Another 24 option might be for them to regrade their backyards to keep the water • 25 away from the house. 26 Sundland noted that these suggestions would only work if everybody 27 in the neighborhood cooperated so adjoining properties would not be 28 flooded as a result of a neighbor's property being regraded. 29 Hamer Reports on City Areas Which Had Problems Last Summer 30 The Public Works Director indicated the City had not changed the 31 drainage system that much in the area off Wilson Street where new 32 homes are replacing the Johnson Florist business which was wiped out 33 in the 1984 tornado. There is still an open system which has the 34 capacity for backing up onto the new tennis courts. The only thing 35 different is that the new homes have been built extremely high and 36 have walkout basements which aren't as apt to be flooded. As proof, 37 Mr. Hamer reported that during last summer's storm, the system had 38 again backed up in that area, causing some of the siding which was 39 lying around to float down about four blocks away from the site. 40 The Public Works Director reported he perceived there were only two 41 homes in the Murray/St. Anthony Boulevard area which are 42 consistently affected by storm water flooding. However, there are 43 many more homes with backed up sanitary sewer systems. He said the 44 only way to hold the storm sewer overflow back is to have higher 45 retaining walls built. • 13