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f <br /> Geotechnical Engineering Evaluation NGA File No.983917 <br /> Stadium Flowers Addition March 10,2017 <br /> Everett,Washington Summary-Page 2 <br /> surface of the asphalt or concrete existing throughout the site. We should note that localized areas of <br /> deeper unsuitable soils and/or undocumented fill could be encountered at this site and exposed at the <br /> proposed foundation subgrade elevations, depending on final site grading and development plans. These <br /> unsuitable soils would likely be associated with previous grading activities and/or the installation of the <br /> existing utilities within the property. This condition would require additional excavations in foundation, <br /> slab, and pavement areas to remove the unsuitable soils. In the attached report, we have also included <br /> recommendations for site grading,temporary slopes,retaining walls,erosion control,andsite drainage. <br /> We should be retained to discuss our recommendations with your design team, and to review final plans <br /> prior to construction. We also recommend that NGA be retained to provide monitoring and consultation <br /> services during construction to confirm that the conditions encountered are consistent with those indicated <br /> in the explorations,to provide recommendations for design changes should the conditions revealed during <br /> the work differ from these anticipated, and to evaluate whether or not earthwork and foundation <br /> 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 any <br /> questions regarding this report or require further information. <br /> Sincerely, <br /> NELSON GEOTECHNICAL ASSOCIATES,INC, <br /> 4111 .411 <br /> r'r <br /> Inhaled M. Shawish,PE <br /> Principal <br />