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MINUTES OF THE PLANNING._^.OMMISSION MEETING HELD AUGUST 18, 1986 <br />9 ULRICH CONTINUED <br />Pollution Control Agency - Applications on this <br />level o. sage ;+re being permitted and monitored. <br />LMCD - Concerned regarding the possibility of a de- <br />icing effect. They have the authority to prohibit <br />the use of this system if it causes a de-icing <br />effect. <br />Dean Buendorf of Terra -Therm stated that they have <br />installed over 1800 systems in Minnesota. He noted that <br />they are oasically for residential use but have also <br />installed for commercial operations. He noted that <br />there was a similar system currently in operation on <br />Bald Eagle Lake in White Bear Lake. He stated that that <br />system '^as not created a de-icing effect. <br />Planning Commission recommended that staff contact the <br />owner of the system in 'Ahite Bear Lake for more <br />understanding of this system. <br />George Shoppie stated that based on his experience and <br />his research calculation, he stated the discharge pipe <br />will not create a de-icing effect. <br />Bellows asked `aim if the the discharge pipe might <br />prevent the ice from forming in the first place. <br />Mr. Shoppie stated no because the freezing action is <br />greater than the thawing action of system and during the <br />time of year whet; the ice is freezing, the system is not <br />operating at full capacity. <br />kovegno questioned the v•;, l .dity of a lin-, r equal <br />velocity over the entire 20' of pipe. <br />Mr. Shoppit -tatted fac'_s that supported nis finding that <br />the pressure would be equal. <br />City Consulting Engineer MiXe Lynch s4inorted Mr. <br />Shoppie in his finding stating that the difference would <br />be negligible. <br />MCDQ^eld expre6ged concerns with setting a precedent by <br />allowing this type of system and the impact on the 3eke <br />if many of these systems were installed. <br />Addr Ting McDo aid's concern. Cliff Reep stated the. <br />ther. culd be little impact on the lake level due to <br />evaporation and contol by the Gray's Bay Dam. <br />