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UNIVERSITY OF MINNESOTA <br />TWIN CITIES <br />Mr. Roger Runyon <br />3046 LaBore Road <br />Little Canada, MN 55109 <br />Dear Mr. Runyon, <br />Minnesota Geological Survey <br />1633 Eustis Street <br />St. Paul, Minnesota 55108 <br />(612) 373-3372 <br />July 23, 1976 <br />As we discussed in our telephone conversation this morning, I am <br />sending you a map which indicates the first geological formations <br />that occur below the soil zone in the area around your home. I have <br />colored yellow, the Hugo Sand Formation which underlies your home and <br />the proposed housing development. The red dots indicate water -wells <br />which draw water from a common sand and gravel body. The other homes <br />shown on the map may have wells which obtain water from the sand and <br />gravel unit below the Hugo Sand, but we have no record of these wel.1s. <br />I am enclosing the records of several water -wells shot -in on the map. <br />Although these wells vary in depth, they end at approximately the <br />same elevation above sea level in the same sand and gravel formation. <br />Whether groundwater withdrawn from the proposed housing development <br />will affect future yields from this common water bearing formation <br />(i.e. aquifer) is difficult to determine without extensive study. <br />However, it appears that many homes already use this aquifer with <br />little effect upon it. It is highly probable that if the sixty homes <br />in the proposed housing development were to each have a well drilled <br />into the aquifer used by you and your neighbors, very little effect <br />would be noted in the groundwater supply available for your wells. <br />Possibly, pumping from the sixty wells concentrated in such a devel- <br />opment may cause a localized lowe'r'ing of water levels in surrounding,. <br />we l:Ja, :but '. i owes'. i n­the pumps s w i i 1 so i ve . th i s prob 1 ern.-. <br />In summary, although I cannot give you a definite statement <br />regarding the influence the proposed housing development will have <br />on water yields from the existing wells in your area, it appears <br />such an effect would be minimal. If you have any further questions, <br />please feel free to contact me. <br />Sincerely, <br />.�. �i•l i,� ` � i l l ` <br />Bruce Olsen <br />Geologist <br />Enclosures <br />Clerk's exhibit <br />meeting Aug. 11 <br />V <br />no, <br />109 <br />BO/rmm <br />Original on file under <br />Land records <br />West Wind Platt <br />