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1. <br />Bones troo <br />Rosene <br />Anderllk & <br />Associates <br />Engineers & Architects <br />October 10, 1989 <br />City of Orono <br />Box 66 <br />Crystal Bay, MN 55323 <br />Attnt Ms. Jeanne Mabusth <br />ORO G BonnhDo PE <br />Houcn W ftwene PE <br />Joseph C Arx»n It PE <br />DrjOBcyd A Lefnoefij PE <br />P<hA#o E PE <br />Jjtfnrs C C(son. PE <br />Cenn 9 CtXJC PE <br />TNxtvis E Noyn PE <br />Pobrrt G Schix»*chf PE <br />Mjfva-! L SorvjU PE <br />Ktm A Gordon PE <br />PchaftJ W Fouer. PE <br />Donjid C Bunjj'Ot. PE <br />Jerry A Booroon PE <br />Mj't A Mjnvorr PE <br />K E<^J PE <br />M<fvjd T RALtffTvjnn PE <br />RoOert 9 P*f**tr^ PE <br />O Losmxa. PE <br />Thomjs W Ppterson PE <br />Mchjei C Lynch. PE <br />Jjrn« R M^Lind. PE <br />Kcnr^ P Anjenon PE <br />Krrfh A BJChm.»nn PE <br />Mart R RO#i PE <br />RoOerT C Rusveif A i A <br />Thorrvw E Anguv PE <br />McMrjrO A Sjrh>tl. PE <br />Dane! J EtJgwTon PE <br />Mjrfc A Seia PE <br />Phr*<5 J C^SV^ PE. <br />Mjrt 0 PE. <br />rhomji R Andenoh, A ' A <br />Gty r ffyr^fyje* <br />Chines A EnrfcJOh <br />Leo M Pj^s^ <br />Hjilin M Ohon <br />SuMh M EberWi C PA <br />. v: ;-T .7 <br />ccr I! <br />•« « « <br />Ret File No. 139-1469 <br />Orono Police Dept. Siren <br />Dear Jeanne, <br />Ve have revieved the request for placeoent of an I^ergency Preparedness Siren <br />in the vicinity of NSP pole #40 within the Vindjav^ner Lane right-of-way. <br />1. <br />2. <br />3. <br />4. <br />5. <br />Ve recommend that the siren be placed atop an anodized aluminum pole which <br />is the same type of pole used for the siren at the water treatment plant. <br />An anodized aluminum pole would be a long lasting pole and would require <br />little maintenance. <br />Controls for the siren must be attached to the pole in watertight enclo­ <br />sure 10 feet off the ground. An antenna is situated at the controls for <br />activation of controls by radio signal. <br />The siren rotates 359* and then reverses direction back to its original <br />position. The siren is activated for 3 minutes when tested on the first <br />Wednesday of each month at 1:00 P.M. A 125 decibel siren will register <br />125 decibels at 100 feet and 70 decibels at 4500 to 5000 feet. <br />There is currently 1 siren located in Navarre and 2 in Long Lake. An <br />additional siren is needed in the Windjammer Lane area as it is a popu­ <br />lated area currently without a warning device. The siren is necessary fer <br />public safety in the event of a tornado or other catastorphlc events. <br />Placement on high ground is preferred so that the 4500 feet radius of <br />coverage is met. <br />The concrete <br />feet deep. <br />footing for the pole is anticiapted to be 24* in diameter 6 <br />If you have any questions, please contact this office. <br />Yours very truly, <br />BONESTROO, ROSENE, ANDERLIK t ASSOCIATES, INC. <br />Michael C. Lynch <br />MCL:11 <br />2335 West Highway 36 • St. Paul. Minnesota 55113 • 612-636-4S0C