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v <br /> May 9, 2024 <br /> ES-8528.05 <br /> Earth Solutions NW LLC <br /> Pacific Ridge — DRH, LLC Geotechnical Engineering, Construction <br /> 17921 Bothell-Everett Highway, Suite 100 observation/Testingand Environmental Services <br /> Bothell, Washington 98012 <br /> Attention: Jason Atkin <br /> Subject: Building Drainage <br /> Chelsea Heights <br /> 9506 — 7t" Avenue Southeast <br /> Everett, Washington <br /> Dear Jason: <br /> In accordance with your request, Earth Solutions NW, LLC (ESNW) has prepared this letter <br /> regarding building drainage. ESNW reviewed the referenced documents and visited the site to <br /> observe site conditions. If buildings will incorporate crawl spaces rather than slab-on-grade, in <br /> our opinion, a crawl space drain system will provide adequate drainage in lieu of perimeter footing <br /> drains. The crawl space drain must provide positive drainage to an appropriate outlet. If footing <br /> drains are not installed, we recommend backfilling footings with a relatively impermeable soil. <br /> We trust this letter meets your current needs. If you have any questions or <br /> if additional <br /> information is needed, please call. V L� <br /> Sincerely, <br /> EARTH SOLUTIONS NW, LLC MAY 16 2024 <br /> T . CITY OF EVERET�,wR E� <br /> w Permit Services A <br /> y D �CL4 <br /> 53803 MAY 1 01024 <br /> ��FSS/c►srlrR�����'� CITY OF EV <br /> ONAL 05/09/2024 Perrnjr ServviiReg�T <br /> Henry T. Wright, P.E. <br /> Associate Principal Engineer <br /> References: <br /> • Typ. Crawl Space Drainage Design, prepared by Pacific Ridge Homes <br /> • Geotechnical Engineering Study, prepared by ESNW, ES-8528.01, dated July 18, 2022 <br /> 15365 NE 9011 Street,Suite 100 • Redmond,WA 98052 • (425)449-4704 <br /> 3130 Varney Lane,Suite -105 • Pasco,WA 99301 • (509)905-0275 <br /> esnw.com <br />