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NTF <br /> 6160 Carmen Avenue East <br /> Inver Grave Heights,MN 55076 <br /> IB t' 8051.389.4191 F:651.3B5.4190 Unearthing confidence'"' <br /> NORTHERN <br /> TECHNOLOGIES,LLC WWW.NTIgeO.COm <br /> November 23, 2016 <br /> City of Ramsey <br /> Attention: Mr. Bruce Westby, P.E. <br /> 7550 Sunwood Drive NW <br /> Ramsey, Minnesota 55303 <br /> Subject: Geotechnical Exploration and Engineering Review <br /> Alpine Drive—Street Improvements <br /> Ramsey, Minnesota <br /> INTI Project No. 16.61770.100 <br /> Northern Technologies, LLC(NTI) has completed a total of thirteen (13) borings for the Alpine Drive <br /> project area in the City of Ramsey, Minnesota. <br /> The scope of services included determining existing bituminous and aggregate base thicknesses, and <br /> subsurface conditions, and providing recommendations for site preparation, excavations, engineered fill <br /> and compaction, depths of unsuitable soils to be removed, groundwater management, potential <br /> difficulties during construction, utility installation, and pavement design. <br /> Our services were performed in accordance with our proposal dated October 25, 2016. <br /> PROJECT AND SITE DESCRIPTION <br /> The project includes street and possibly utility improvements to a section of Alpine Drive between <br /> Armstrong Boulevard and Variolite Street in Ramsey, Minnesota. <br /> The pavement sections are proposed to be designed using the average annual daily traffic (AADT) <br /> information and based on a 20-year design pavement life. The AADT information noted on the Mn/DOT <br /> Traffic Data webpage indicates an AADT of 1000 for the project section of Alpine Drive. INTI was not <br /> aware of invert elevations or other design details of the proposed utilities at the time this report was <br /> prepared. <br /> Precision - Expertise • Geotechnical • Materials <br /> FARGO BISMARCK GRAND FORKS - MINOT INVER GROVE HEIGHTS RAMSEY <br />