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i&I <br />•E ENGINEERING <br />GEOTECHNICAL ENGINEERING STUDY <br />EVERETT COLLEGE -FORMER INDEX HALL FIELD <br />EVERETT, WA 98201 <br />PROJECT NO. 21-0101 <br />1.0 SUMMARY <br />The following summary of project geotechnical considerations is presented for introductory purposes, <br />and as such, should be used only in conjunction with the full text of this report. <br />• Project Description: The subject site is located at 2000 Tower Street, Everett, Washington. We <br />understand the former Index Hall Field will be developed with a new greenhouse, a new multi - <br />sport court, and associated improvements. The site and surrounding area generally slope <br />downwards from south to north, approximately from elevation 125 to 120 feet (NAD 1983), <br />respectively. <br />• Exploratory Methods: MPE explored subsurface conditions on March 19, 2021 by four hand <br />borings advanced at strategic locations across the project site to a depth up to 8 feet below <br />existing grade. <br />• Site Conditions: The site generally slopes down from south to north, approximately from <br />elevation 125 to 120 feet, respectively. Site boundaries are generally delineated by Glacier Hall <br />to the north, Whitehorse Hall Parking Lotto the south, Gray Wolf Hall to the west, and by Shuksan <br />Hall to the east. <br />• Soil Conditions: Our on -site explorations revealed fairly uniform near -surface soil conditions and <br />confirmed the mapped stratigraphy of Fill material over Vashon Till deposits. Our geotechnical <br />laboratory tests revealed that the existing native Vashon Till deposits to be currently above their <br />optimum moisture contents and highly sensitive to moisture content variations, due to their high <br />silt content approximately 26 percent. <br />• Groundwater Conditions: At the time of exploration (March 2021), groundwater was <br />encountered at 4.2 feet below ground surface III Because our explorations were performed <br />during an extended period generally wet weather, these observed groundwater conditions may <br />closely represent the yearly high levels; somewhat lower levels probably occur during the <br />summer and early fall months. At all times of the year, groundwater levels would likely fluctuate <br />in response to precipitation patterns, off -site construction activities, and site utilization. <br />MP ENGINEERING, PLLC MPGEOTECH.COM <br />