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Silver Lake Elementary School Subsurface Erploration, Geologic Hazard, <br />Building Additions, Service Drive, and Water Line Installation and Geotechnical Engineering Report <br />Evereu, Washington _ Design Recmuuueudntions <br />gradation and variable thickness, and should therefore not be considered part of the required <br />pavement section. If the existing 5/a-inch minus crushed rock can be removed without <br />significant fines contamination, the material can be reused as the upper leveling course in the <br />ratio described above (1 inch of I 1/-inch:11/ inches of 5/e-inch crushed rock). <br />16.0 PROJECT DESIGN AND CONSTRUCTION MONITORING <br />At the time of this report, site grading and construction methods had not been finalized. We <br />are available to provide additional geotechnical consultation as the project design develops and <br />possibly changes from that upon which this report is based. We recommend that AESI <br />perform a geotechnical review of the plans prior to final design completion. In this way, our <br />earthwork and foundation recommendations may be properly interpreted and implemented in <br />the design. <br />We are also available to provide geotechnical engineering and monitoring services during <br />construction. The integrity of the pavement section depends on proper site preparation and <br />construction procedures. In addition, engineering decisions may have to be made in the field <br />in the event that variations in subsurface conditions become apparent. Constriction monitoring <br />services are not part of this current scope of work. If these services are desired, please let us <br />know, and we will prepare a cost proposal. <br />We have enjoyed working with you on this study and are confident that these recommendations <br />will aid in the successful completion of your project. If you should have any questions or <br />require further assistance, please do not hesitate to call. <br />Sincerely, <br />ASSOCIATED EARTH SCIENCES, INC. <br />Kirkland, Washington <br />Susan G. Beckham, P.E. <br />Senior Project Engineer <br />Attachments: Figure l: Vicinity Map <br />Figure 2: Site and Exploration Plan <br />Appendix: Exploration Logs <br />E%P1aES 11/20/ f)ui <br />Kurt D. Mernman, I'.I:. <br />Principal Engineer <br />November 8, 2006 ASSOCIATED EARTH SCIENCES, INC. <br />SCE11d-K£02599BZ- ProjemlN0205991W1VP Page 15 <br />