02-02-93 CCM - Laserfiche WebLink

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LAKE ELMO CITY COUNCIL MINUTES FEBRUARY 2, 1993 2 B. Resolution No. 93-8, A Minor Subdivision with Variance: Keith and Elaine Raleigh M/S/P Johnson/Mottaz - to approve Resolution No. 93-8, A Resolution granting a minor subdivision with a variance to Keith and Elaine Raleigh. (Motion carried 5-0). C. Olson Lake Estates (Update from Jerry Filla) City Attorney Jerry Filla reported he met with some of the representatives from the lakes association groups. He handed OUt a document ahowing the currant pond elevation at 955,3 and rising. The engineer for the watershed district was going to take another measurement today, but had not completed that process as of this time. The lowest elevation of a basement around that pond is 962.8. There is a study from Oakdale indicating that it is 961.7. The watershed district is monitoring the level of the pond and taking samples of the water in the pond to determine the various chemical content. They are also taking samples of Olson Lake. The DNR's position was not certain. They have two concerns: (1) the quality of the water that would go from the pond to Olson Lake; (2) the pipe elevation is at 952 initially because that is where the DNR wanted it because they wanted this particular pond to be a wetland. There are a couple of alternatives to discharging directly into Olson Lake. One is to pump the water from the pond north into the wetland north of 50th St. According to the watershed's engineer if they can figure out how to do this or where they can put the pipes, they could pump temporarily to that area. There is an advantage to this. They can control the amount of the pumping, whereas if they unplug the pipe, it's all going into Olson Lake. If they pump north and west, they can control the amount that is coming out the pond and monitor what's happening in the wetland and the impact on Long Lake. It obviously costs more money than simply pulling the plug. They can bypass Olson Lake with a series of pipes, but that's long term and very costly. Pumping toward Long Lake and retaining water in the system is a possibility that the engineers of the watershed district are investigating and intend to do before they release water into Olson Lake. Filla pointed out we need to establish volume and the quality of water and the impact of that on Olson Lake. It. seems there will be a considerable amount of silty water containing high phosphorus content which would have a significant impact of Olson Lake.