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Earth` <br /> %44,S44:04`}' : <br /> December 15, 2015 }r° YN <br /> ES-4011.02 • <br /> Earth Solutions NW LLC <br /> Veritas Construction, inc. <br /> 22819 Woodway Park Road Geotechnica( Engineering <br /> Woodway, Washington 98020 s Construction Monitoring <br /> o Environmental Sciences <br /> Attention: Ms. Ashley Previs <br /> Subject: Supplement Assessment— Lot 5 <br /> Proposed Vault Structures <br /> Soundview Business Center <br /> Everett, Washington <br /> Reference: Earth Solutions NW, LLC <br /> Stability Assessment <br /> Vault Structures <br /> ES-4011, dated October 6, 2015 <br /> Dear Ms. Previs: <br /> In accordance with your request, Earth Solutions NW, LLC (ESNW) has prepared this letter <br /> and supplement assessment of stability for Lot 5 of the Soundview Business Center property. <br /> Lot 5 is located to the west of the proposed development area, and is currently undeveloped <br /> and heavily forested. As part of the above referenced stability assessment for the proposed <br /> Soundview Business Center vault structures, the descending slope areas of Lot 5 were <br /> evaluated and considered with respect to overall site stability. Soils throughout Lot 5 are <br /> interpreted as dense and stable granular till deposits. Overall stability of the Lot 5 soils and <br /> descending slope area is characterized as good. Additionally, given recent episodes of heavy <br /> rain, a follow up reconnaissance of the descending slope area throughout Lot 5 was conducted <br /> on December 14, 2015. No indication of deep seated slope movements or shallow debris flow <br /> activity was observed. Soils near surface are comprised of relatively well drained granular till <br /> soils. The mature evergreen trees throughout the sloped areas exhibit vertical growth patterns, <br /> with no indication of severe arching indicative of slope movements. In this respect, and based <br /> on the prior stability analyses, Lot 5 is considered stable. If Lot 5 will be developed in the <br /> future, ESNW should prepare a formal geotechnical report specific to the proposed <br /> development activity. <br /> We trust the letter and supplement assessment meet your current needs. Should you require <br /> additional information, or have questions, please call. �� .. <br /> .� t�-0l) A <br /> Sincerely, <br /> EARTH SOLUTIONS NW, LLC 14. °}1:40 o <br /> .1141 k' ' <br /> Raymond A. Coglas, P.E. <br /> ,8 <br /> Principal � / ;� � =- r: P <br /> 1805 -136th Place N.E.,Suite 201 Bellevue,WA 98005 (Sf `1 } ; '�7`� ° 1.1' It125)449,4711 <br /> .,tr <br />