04-21-1986 Planning Packet - Laserfiche WebLink

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April 11, 1986 ^ I Ms. Jeanne Mabusth Zoning Administrator City of Orono Box 66 Crystal Bay, MN 55322 Dear Jeanne: I am writing this letter in response to your request for additional informa tion regarding *.he construction of a geothermal heating and cooling system, the completion of construction of the seawall around the existing lagoon and the drainage relief system which was previously installed on the property. Regarding the geothermal proposal, I have included a brochure that explains the general principles of the system. Basically, a geothermal system pumps water from a well, circulates it through a heat exchanger and discharges the water into the lake. Our system is in the design stages and will not be completed for approximately 60 days. We are aware that a conditional use permit will be necessary for Installation of underground pipes. At this point, it is premature to make an application to the City for work that may be necessitated within 75 feet of the laxeshore. Your second request was for more information regarding the seawall. You may recall that at an earlier Planning Commission meeting Mr. Ulrich and I presented pictures showing the existing lagoon and seawall. I believe we indicated that Mr. Ulrich had a desire to extend the existing seawall around the balance of the lagoon. At present, because of other priorities, we have not obtained the necessary engineering drawings nor had the opportunity to obtain Installation bids. Those two steps are necessary before we can finalize plans for this particular project. Again, we understand that a conditional use permit from the City v;ill be necessary. As you are aware, we will also need approvals from the Department of Natural Resources. Quite frankly, this has not been a priority project because of the immediacy and significance of the other requests currently pending before the City. With regard to the drainage relief system, you may recall that we had a meeting with various City Staff, including yourself, Bruce Schmitt and me. During that meeting the City Staff authorized backfilling, removal of stock piles from the right-of-way and the completion of the drainage relief system. That system consists of a two foot deep sewer rock with filter fabric buried entirely below grade. The system was inspected and approved by Tom Jacobs. The function of the system is to relieve hydrostatic pressure by diverting water away from the foundation walls of the project. We would like the Planning Commission members and City Council members to understand the full scope of this construction project. As a result, we have shared this additional information with you so that you may include it with your staff reports. However, we do feel it is premature for us t > submit conditional use permits for the geothermal system and for the construction of