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From: Drew Martin <dmartin@everettwa.gov> <br /> Sent:Tuesday, May 23, 2023 10:44 AM <br /> To:Andrew Hoff<ahoff@geogroupnw.com> <br /> Subject: City of Everett Permit Services: 7105 Juniper Drive (PW2305-011) <br /> Hello, Andrew. <br /> Thank you for taking my call to discuss this project. This email recaps some of our conversation <br /> regarding the site and wall conditions. Pending confirmation of the following points, I will conclude the <br /> Building review without further comment. <br /> The design and site conditions are understood to be as follows: <br /> 1. The wall construction consists of typical compact(i.e., 12"-deep) dry-stack blocks. The bottom <br /> block is embedded below the grade on the toe side. The slope was excavated such that minimal <br /> to no loose soil was backfilled behind the wall (i.e.,the retained soil is generally <br /> undisturbed). The grade on the toe side is effectively level and not susceptible to erosion. The <br /> wall was constructed with a gravel drainage layer behind the wall and drainage pipe at the <br /> base. Geogrid was not used in the construction. <br /> 2. The minimum distance to the house on the adjacent property is approximately 10 feet. The <br /> estimated difference between the bottom of house foundation and bottom of wall is <br /> approximately 4-5 feet, resulting in a slope of about 1V:2H. Due to this angle, a building <br /> surcharge on the back of the wall was not deemed to exist. <br /> 3. The maximum surface slope of the retained soil is approximately 12.5-degrees, or less than <br /> 3V:12H, resulting in minimal soil slope surcharge. However,the wall was evaluated using a 75 <br /> pcf to provide additional pressure over a typical level retained soil condition. <br /> Please confirm or correct the items above at your earliest convenience. Thank you. <br /> — Drew Martin, P.E.,S.E. <br /> Associate Engineer—Commercial Plans Examiner I Permit Services <br /> 425.257.8810 1 3200 Cedar Street, 2nd Floor, Everett, WA 98201 <br /> EVERETT Phone Hours: M/W/T: 8 am - 12 pm & 1 pm—3 pm;Tu: 1:00pm-3:00pm <br /> everettwa.gov/permits I Facebook I Twitter <br /> Note:Emails and attachments sent to and from the City of Everett are public records and may be subject to disclosure pursuant <br /> to the Public Records Act. <br />