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��}"��;j�[{;,�`� CONSULTANTS <br /> L�,�����E��� � ENVIRONMENTAL <br /> ��'+ � GEOTECHNICAL <br /> l ESTIh�yy �tiC. MATERIALS <br /> � FORENSICS <br /> May 24, 2016 <br /> Mr. Daniel Bovitz <br /> Hennepin County Emergency Management <br /> 1600 Prairie Drive <br /> Medina, MN 55340 <br /> Re: Weather Station Tower Support <br /> Various Sites <br /> AET Project No. OS-06764 <br /> Dear Mr. Bovitz: <br /> American Engineering Testing, Inc. (AET) has completed our services related to construction of <br /> weather station towers at various sites in Hennepin County(County). The scope of our services <br /> was presented in our proposal dated April 5, 2016, and was limited to the following: <br /> 1. Review the design of the proposed tower support system. <br /> 2. Perform site documentation and evaluation of soil conditions at five tower locations. <br /> 3. Prepare a report with our opinion on the adequacy of the proposed tower support system. <br /> Our services were performed in accordance with the terms of CSA Agreement A152997 and <br /> P.O.No. HNCTY-26262G. <br /> Proiect Information <br /> The County is planning on erecting several weather station towers around the county. The <br /> towers will all be Campbell Scientific, Inc. (Campbell) UT30 models which will stand 30 feet <br /> high with three (3) guy wires providing lateral support. <br /> The County will follow the installation procedures outlined by Campbell for the UT30 tower <br /> except that, in some locations,they may deviate as follows: <br /> 1. The tower base will be placed on grade and anchored to the ground with four(4) steel <br /> rods driven to a depth of 48". The preparation of the subgrade below the base has not <br /> been specified. <br /> 2. The guy wire anchors will be anchored into the ground using a galvanized steel, 54-inch <br /> earth screw anchor with a 4-inch diameter helix. <br /> 550 Cleveland Avenue North�Saint Paul,MN 55114 <br /> Phone(651)659-9001 �(800)972-6364�Fax(651)659-1379�www.amengtest.com�AA/EEO <br />