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7 � <br /> Geotechnical Engineering Evaluation NGA File No. 1213420 <br /> CM Heating Additions January 8,2021 <br /> Everett,Washington Summary-Page 2 <br /> It is our opinion from a geotechnical standpoint that the planned site development is feasible from <br /> geotechnical aspects provided that our recommendations are incorporated into the design and <br /> construction of this project. In general, the native glacial soils underlying the site should adequately <br /> support the planned structures. Foundations should be advanced through the loose and/or <br /> undocumented fill soils and be supported directly on the competent glacial material interpreted to <br /> underlie the site or structural fill extending to these soils, for bearing capacity and settlement <br /> considerations.These soils should generally be encountered approximately two to three feet below the <br /> existing ground surface, based on our explorations. However, deeper areas of loose soil and/or <br /> undocumented fill could also exist within unexplored areas of the site. If undocumented fill is <br /> encountered in unexplored areas of the site, it should be removed and replaced with structural fill for <br /> foundation and pavement support. In the attached report, we have also provided general <br /> recommendations for site grading, slabs-on-grade, structural fill placement, retaining walls, erosion <br /> control,and drainage. <br /> We should be retained to review and comment on final development plans and observe the earthwork <br /> phase of construction. We also recommend that NGA be retained to provide monitoring and <br /> consultation services during construction to confirm that the conditions encountered are consistent <br /> with those indicated by the explorations, to provide recommendations for design changes should the <br /> conditions revealed during the work differ from those anticipated, and to evaluate whether or not <br /> earthwork and foundation installation activities comply with contract plans and specifications. <br /> We appreciate the opportunity to provide service to you on this project. Please contact us if you have <br /> any questions regarding this report or require further information. <br /> Sincerely, <br /> NELSON GEOTECHNICAL ASSOCIATES, INC. <br /> Khaled M.Shawish, PE <br /> Principal <br />