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D04155GE <br />report prepared by Van Gilder Insurance which discusses testing services during construction. It is <br />our opinion that the owner, azchitect and engineer be familiaz with the information. If you have any <br />questions regarding this concept please contact us. <br />We suggest that your construction plans and schedule include provisions for geotechnical <br />engineering observations and material testing during construction and your budget reflect these <br />provisions. <br />5.1 Structural Fill Quality <br />It is our understanding that the proposed development may include compacted embankmentSill. <br />The quality of compacted embankment fill will depend on the type of material used, fill lift <br />thickness, fill moisture condition and compactive effort used during construction of the embankment. <br />Engineering observafion and testing of embanlanent fill is essential as an aid to safeguazd the quality <br />and performance of the fill mass. <br />Testing of the structural fill normally includes tests to determine the grain size distribution, swell <br />potential and moisture-density relationship of the fill material to verify the material suitability for use <br />as structural fill. As the material is placed the in place moisture content and dry density aze tested to <br />indicate the relative compaction of the placed embanlanent fill. We recommend that your budget <br />include provisions for observation and testing of embankment fill during construction. <br />Testing of the compacted fill material should include tests of the moisture content and density of <br />the fill material placed and compacted prior to placement of additional fill material. We suggest that <br />a reasonable number of density tests of the fill material can best be determined on a site, material and <br />construction basis although as a guideline we suggest one test per about each 300 to 500 square feet <br />of each lift of fill material. <br />6.0 LIMITATIONS <br />It is the owner's and the owner's representatives' responsibility to read this report and become <br />familiaz with the recommendations and suggestions presented. We should be contacted if any <br />questions arise concerning the geotechnical engineering aspects of this project as a result of the <br />information presented in this report. <br />The recommendations outlined above aze based on our understanding of the currently proposed <br />construction. We aze available to discuss the details of our recommendations with you and revise <br />them where necessary. This geotechnical engineering report is based on the proposed site <br />development and scope of services as provided to us by Mr. Louie Giroda, San Juan County Road <br />and Bridge Department, on the type of construction planned, existing site conditions at the time of <br />the field study, and on our findings. Should the planned, proposed use of the site be altered, Lambert <br />and Associates must be contacted, since any such changes may make our suggestions and <br />~IILUEIt 2Iri~~8~4LTiCi2i~'ES <br />CONSULTING GEOTECHNICAL ENGINEERS AND <br />-9- MATERIALS TESTING <br />