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M98168GE • . 15.0 POST DESIGN CONSIDERATIONS The project geotechnical engineer should be consulted during construction of the project to observe site conditions and open excavations during construction and to provide materials testing of soil and concrete. This subsurface soil and foundation condition study is based on limited sampling; therefore, it is necessary to assume that the subsurface conditions do not vary greatly from those encountered in the field study. Our experience has shown that significant varia- tions are likely to exist and can become apparent only during additional on site excavation. For this reason, and because of our familiarity with the project, Lambert and Associates should be retained to observe foundation excavations prior to foundation construction, to observe the geotechnical engineering aspects of the construction and to be available in the event any unusual or unexpected conditions are encountered. The cost of the geotech- nical engineering observations and material testing during con- struction or additional engineering consultation is not included in the fee for this report. We recommend that your construction budget include site visits early during construction schedule for the project geotechnical engineer to observe foundation excavations and for additional site visits to teat compacted soil. We recommend that the observation and material testing services during construction be retained by the owner or the owner's engi- neer or architect, not the contractor, to ma4ntain third party credibility. We are experienced and available to provide material testing services. We have included a copy of a report prepared by Van Gilder Insurance which discusses testing services during con- struction. It is our opinion that the owner, architect and engi- neer be familiar with the information. If you have any questions regarding this concept please contact us. We suggest that your construction plane and schedule include provisions for geotechnical engineering observations and material testing during construction and your budget reflect these provi- sions. 15.1 Structural Fill Quality It is our understanding that the proposed development may include compacted structural fill. The quality of compacted structural fill will depend on the type of material used as atructuzal fill, fill lift thickness, fill moisture condition and compactive effort used during construction of the structural fill. Engineering 21 Lambert ana ~,o~ociateo COMWLTIMO O[OT[CMMIC~L [MOIM[[q •YO Y~T[III~L iE7TIM0