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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />November 29, 2006 <br />Project 06-507B <br />2007 Street Reconstruction <br />Deerfield 3rd Addition Improvements <br />Elk River, Minnesota <br /> <br />- - - - - - -- - --. .F~ -Closing -- <br /> <br />Our work was performed for geotechnical purposes only and not to document the <br />presence or ex1ent of any contamination on the site. We can note that our crew did not <br />detect any obvious contamination by sight or smell during drilling operations. However, <br />human senses are limited in terms of contamination detection and, therefore, the lack of <br />detection through human sensing does not preclude the possibility of the presence of <br />contamination of the site. <br /> <br />This report represents the result of our subsurface investigation and is based on <br />information gathered at specific locations. Subsurface conditions can change a great deal <br />over short horizontal distances. Also, the actual interface between strata will likely be a <br />gradual transition rather than an abrupt change as represented on the boring logs. <br /> <br />Geotechnical engineering is based extensively on opinion. Therefore, the data contained <br />in this report should be used as a guide, and we recommend that construction monitoring <br />be performed by a qualified geotechnical engineer or technician. Any change~ ~~e .. _ <br />subsurface conditions from those found during this geotechnical exploration should be <br />brought to the attention of a soils engineer. <br /> <br />c:b6507B-Ipt <br /> <br />Page 9 <br />