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LRRWMO Meeting Minutes May 22, 1991 Page 5 been found, Mr. Kollodge indicated they monitored three prime wells in the subdivision and no contamination has been found. It was Waste Management's contention this is because the residential area is on a bedrock high which is keeping the contaminants in the present area. However, it is starting to move east and south around the bedrock high. Mr. Kollodge stated the bedrock acquifers are approximately 150 to 220 feet deep. Jankowski queried when the impact on Sunfish Lake is anticipated. Mr. Kollodge indicated they were not certain there would. be an impact on the lake. However, should it occur, it is not expected for approximately two years after the project begins. Jankowski further queried the impact to the wetlands to the south and west. Mr. Weaver stated the wetland to the .west was not expected to be affected. However, the wetland to the south, if lowered, can be also have treated water pumped back into it. Mr. Kollodge stated should there be a need to replace water into Sunfish Lake, it would be supplemented at ten gallons per minute, a much slower rate than the water being pumped out of the wells. Therefore, he confirmed it would not be possible to put all of the treated water into the lake. Weaver indicated it was extremely important this board hear and review this project. However, he noted since Barr Engineering is already reviewing it in some detail for Anoka County, it is probably not necessary to incur additional LRRWMO expense to do it again, noting the other state agencies also reviewing it. However, Weaver stated the LRRWMO should definitely be made aware of what is going on. Jankowski concurred with this position. Schrantz stated this board can acknowledge other agency reviews and stay abreast of project developments through official reports. He indicated his concern with this project was the LRRWMO did not know anything about it. Skallman expressed two items of concern with regard to this project with which the LRRWMO should be involved: 1) The impact on groundwater; and 2) the permitting authority by this board during the construction process in relation to erosion control. Schrantz added outfall is also a concern. Mr. Weaver stated the water will be pumped at 1,100 gallons per minute. Their engineering firm of Hokanson Anderson has indicated the water will take up approximately two per cent of the City of Ramsey's storm sewer capacity. Schrantz stated this water flow will be continuous.