Laserfiche WebLink
L <br />Bonestroo, Rosene, Anderlik & Associates, Inc. <br />2335 W. Trunk Highway 36 <br />St. Paul, MN 55113 <br />612.636.4600 <br />September 18, 1986 <br />City of Orono <br />Box 66 <br />Crystal Bay, MN 55323 <br />Attn: Ms. Jeanne Mabusth <br />O <br />Engineers & Architects <br />Re: William Ullrick Res. <br />Conditional Use Permit #1039 <br />Geothermal Systems Analysis <br />File No. 139 <br />Dear Jeanne, <br />Uoa G. Bonrlsruu. , r. <br />Mubrrl W. Rwrnr. 1' L <br />.-ph C. Andrd,A. P L <br />Brad/urd A. L.rmbrr;, P. L. <br />R,rhord L. T.rner, P.E. <br />James C. Udun, P.E. <br />Glrnn R. Coin, P L <br />Amh A Curd... P L. <br />T Aumm L N.Y", Y L <br />Ma Au.d W. Lw lrr, P.L <br />Nubrrl G. &A. —At. PL <br />Mor.,n 1. S, r .l.. P t <br />Donald C Bur,ard,. P L- <br />Jell r A. Bu.rdun, P L <br />M-A A. Nonsun. P L <br />led A. Fuld, ^ 1. <br />M,rAwl I" Muulrnuwn, P L <br />Nubrn N Ylr//rrlr. /' L <br />L.rdU Lwlula. P.L <br />Thomas M . Menu.. P L <br />Ala A"/C. Ly., A. PL <br />Amen L. Wd/o, P L <br />lumn R. Mubwd. PE. <br />Arnnrlh P. Awdenun, PL. <br />AaM A. Bwhm.nn, P.L. <br />4.4 R. Rolls, Y E. <br />Ruben C. R.wt, A.D.A. <br />Thum.$ E. A",., P.E. <br />.w ull L Yu.Q, P.L. <br />CAurlts A. Lrw Asun <br />Lru .Al P.—AA), <br />//.,/an M, Ubun <br />Susan M. Lbrrbw <br />I have contacted groundwater experts from the W. Geological Survey, the U.S. <br />Geological Survey and Twin City Testing for input concerning the depletion of <br />the Prairie Du Chein/Jordan Acquifer by random application of geothermal heat- <br />ing/cooling systems. <br />These experts indicate that one home pumping an average of 30 gpm of flow from <br />the Prairie Du Chein/Jordan acquifer or even 100 such homes will have essen- <br />tially no effect upon the acquifer. There is some concern amongst experts and <br />regulating agencies that a concentration of "big users" u y be causing a fluc- <br />tuation of the groundwater level within the acquifer. One such example is the <br />City of St. Paul water system. This system has caused a noticeable fluctua- <br />tion in the level of the acquifer due to an immense quantity of groundwater <br />withdrawal from a relatively small area. On the other hand, Tuwnsquare in St. <br />Paul has a geothermal system that pumps at a rate of 1200 gpm without regional <br />depletion of the acquifer. The usage of the acquifer is currently being regu- <br />lated by the DNR and the Health Department. <br />The popularity of geothermal heating systems for <br />been dying out the past couple years as there is <br />for their use and the placement of such a system is <br />tive. <br />Y.jurs very truly, <br />BONESTR00, ROSENE, ANDERLIK & ASSOCIATES, m . <br />Michael C. Lynch <br />MCL:li <br />residential properties has <br />no longer an energy credit <br />generally not coat-effec- <br />7932d 30 Year <br />Anniversary <br />