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Silver Lake Elementary School Subsurface Exploration, Geologic Hazard, <br /> Building Additions, Service Drive, and Water Line Installation and Geotechnical Engineering Report <br /> Everett, Washington Design Recommendations <br /> gradation and variable thickness, and should therefore not be considered part of the required <br /> pavement section. If the existing 518-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 114-inch:11/2 inches of 5/8-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. Construction 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, M[. <br /> ASSOCIATED EARTH SCIENCES, INC. y� <br /> Kirkland, Washington �`�At, wA. '1 b,, <br /> 0 x7,:: .. Al* <br /> 1 <br /> 04, _6_23580 <br /> • I <br /> 41/ONAL St4° <br /> %24/"P- dt/..J17514,aux11. I EXPIRES 11/20/j` <br /> Susan G. Beckham, P.E. Kurt D. Merriman, P.E. <br /> Senior Project Engineer Principal Engineer <br /> Attachments: Figure 1: Vicinity Map <br /> Figure 2: Site and Exploration Plan <br /> Appendix: Exploration Logs <br /> November 8, 2006 ASSOCIATED EARTH SCIENCES,INC. <br /> SGB/!d-KE02599B2-Projeas120020599IKEIWP Page 15 <br />