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April 12,2018 <br /> Page 5 of 5 <br /> Retaining Wall Design <br /> Limitations <br /> Earthwork construction is characterized by the presence of a calculated risk that soil and <br /> groundwater conditions have been fully revealed by the original evaluation. This risk is <br /> derived from the practical necessity of basing interpretations and design conclusions on <br /> limited observation of the earth. The recommendations made in this report are based on <br /> the assumption that soil conditions consist of glacially consolidated till or outwash <br /> materials. if any variations or undesirable conditions are encountered during <br /> construction, Cobalt Geosciences should be notified so that supplemental/alternative <br /> recommendations can be made. <br /> The conclusions of this report are based on the limited information provided regarding <br /> the proposed construction. If the proposed construction is relocated or redesigned, the <br /> conclusions in this report may not be valid. Cobalt Geosciences should be notified of <br /> any changes so that the recommendations can be reviewed and re-evaluated. Cobalt <br /> Geosciences should monitor all aspects of wall construction. <br /> The information presented herein is based upon professional interpretation utilizing <br /> standard practices and a degree of conservatism deemed proper for this project. We <br /> emphasize that this report is valid for this project as outlined above,and should not be <br /> used for any other site. <br /> Sincerely, <br /> Cobalt Geosciences, LLC <br /> oVIONyk <br /> f , . <br /> 54896 <br /> 3` 0"G!STERS ;\ <br /> . IONS .. <br /> Exp 6-26-2018 <br /> Phil Haberman, PE, LG, LEG <br /> Principal <br /> PH/sc <br /> Figure 1;Site Plan <br /> Figure 2; Generalized Wall Layout <br /> Attachments:Wall Design Output Files <br /> 22 <br />