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1994-06-09 Drainage Issue ~~ MEYER-ROHLIN, INC. ENGINEERS-LAND SURVEYORS 1111 Hwy. 25 N., Buffalo, Minn. 55313 Phone 612- 682-1781 June 9, 1994 Bob Robertson R. C .M . 605 Franklin Avenue NE st. Cloud, MN 56301 RE: Psyks 6th Addition Albertville, MN Dear Bob: In an attempt to get the Psyk/Marx drainage issue resolved, I am submitting additional background information regarding the psyk 4th Addition development. Our firm did not plat the 4th Addi tion; however, the record plat follows quite closely the concept 1 plan that we did for Mr. Doug Psyk in 1972-1973. The topo for the psyk proposed development was done by our field crews in December, 1972. The aerial topography for the balance of the area to the north and west was flown in November of 1981 and subsequently purchased by the City of Albertville. Enclosed is a combined blueprint of the topography of the Psyk development areas. We have indicated by the blue line the general drainage areas prior to any development of the land as it drained to the north into the large wetland areas. Enclosed also are the plan and profile sheets for the City of Albertville's improvement project for the finished street construction of Psyk's 4th Addition, defining the final drainage pattern from the 4th Addition. The yellow/green line indicates the drainage area that is proposed to flow to the northeast from the finished Psyk 4th, the proposed 6th Addition, and any future additions to the west of the 5th and 6th additions. Please refer to our letter.of May 27, 1993, addressed to you. Mr. Bernard Marx's concerns apparently have been the amount of flow into his wetland area. The proposed and current development pattern of the Psyk areas have, in reality, greatly reduced the runoff area to the wetlands. The runoff characteristics have changed somewhat; however, the runoff from row crop land is not that different from runoff from suburban residential. I think the proposal of Mr. Psyk to escrow funds for a future storm sewer and sedimentation basin before outletting into the wetlands, with costs to be shared on a final developed land Thore P. Meyer, Professional Engineer Robert Rohlin, Licensed Land Surveyor /.;' 'i ? basis, is a very fair and reasonable solution. If the need for a temporary detention pond located on the last northeast lot of the 6th Addition, before overflowing into the existing swale on the Marx property, would be deemed necessary, possibly Mr. psyk would be agreeable to this. The construction of a storm sewer across the undeveloped land to the existing storm sewer on Lander Avenue NE is not a practical solution. The existing 18" storm sewer at Lander Avenue would not have the required capacity without the construction of a detention basin to reduce the peak flows. We know the proposed sketch plan for the Marx property is not acceptable, as no attempt has been made to avoid the wetlands; therefore, at this time a location for a storm sewer and detention pond cannot be defined. It would seem more practical to use the existing wetlands, with a sedimentation basin, to perform the same tasks with much less storm sewer cost. This is about all the historical information that we have in our office; however, if you have any questions, please feel free to contact me. I think the Albertville City Council needs some direction from you so that a decision can be made regarding the P syk 's 6th~ Addition. To get the SCS people involved regarding watersheds, etc., seems to be an overkill for such a natural drainage solution. I understand you will be back in the office on Monday. After you have looked at all of this, please give me a call to se~ what other information we can get to you. Doug psyk needs a decision on his project as soon as possible. Sincerely, cc: Doug Psyk /' Mike Couri, Radzwill Law Office File 94120