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1�1 <br />Page 1 <br />August 4, 1996 <br />Ms. Jeanne Mabutsh 3 <br />City of Orono Staff <br />Box 66 <br />Crystal Bay, MN 55322 <br />•sr Jeanne: <br />Enclosed is the data requested by the Staff and the Planning Commission <br />regarding the geothermal heating system proposed for the William Ulrich <br />residence. <br />1. DNR: <br />Contact was made with John Fax of the DNR and the appropriate information <br />submitted. We were issued the Appropriation and Use of Water Permit 86-6178, <br />which authorizes the pumping and discharge of 11,000,000 gallons vearly. j"3'T' G <br />2. PCA: <br />Discharge application forms were completed and sent to Gary Kimble of the <br />MPCA. The MPCA is presently Reeking authorization to issue a general permit <br />program for discharges less than 100,000 gallons per day which constitutes a <br />negligible environmental impact. Per my phone call with Mr. Kimble, August 4, <br />1986, we have satiPfied the necessary requirements, and the PCA will advise if <br />any changes occur. El[WITQ <br />3. LMCD: <br />Clifford Reap, acting as our agent, h`s corresponded with Frank Mix& and <br />the LMCD. Mr. Ktxa stated chat they have no jurisdiction in thin area, and <br />feels the other regulating agencies will answer any environmental concerns. <br />The following information has been gathered from experts involved with <br />geothermal heating systems: <br />1. & 2. Average doily discharge/peak discharge (in gallons per hour), and <br />velocity of discharge as it enters lake through perforations: <br />These two items are explained on the same graph and also on the <br />Information submitted by Terra -Therm, Inc. gvLi�ts Et f Cr <br />3. Supply line specifications - comings, size, depth of well, aquifer tapped <br />effects of water table: 9itk4LI-rs N _ <br />The supply of water will be taken from a private well. The well consists <br />of 8" - 6" casing and a total depth of 322 feet. The aquifer tapped is the <br />Prairie du Chien Jordan aquifer. In it** #9, the well record states that <br />static water level is 65 feet. This means water is sitting in the cosinx h5 <br />faei below land surface. It** 010 states that water level remained at 65 feet <br />after a 20 hour period of pumping at 200 ga!!ors per minute. Conclusion. <br />neglible drowdown after extended pumping schedule. <br />