4704 HARBOR LN 2018-01-02 MF Import

From: 11/20/2009 14:08 #243 P.005/011 FIELD REPORT. NELSON Project: Anderson Property File No.: 816909 GEOTECHNICAL Owner: Rick and Holly Anderson Date: 09/12/09 ASSOCIATES, INC Location: Everett, Washington Report No: 2 17311 135' Ave. NE #A-500 Weather: Partly Sunny, 50's Page: 1 of 3 Woodinville, WA 98072 Purpose of (425) 486-1669 FAX 481-2510 Visit: Wall Installation Monitoring By: BD We visited the site today at the request of Rick and Holly Anderson to observe the installation of a soldier pile retaining wall along the top of the existing steep north -facing slope adjacent to their existing residence and pool. Upon arrival, we met with Jason of Kulchin Drilling and he informed us that they would not be able access Pile #1 (N1) at the western corner of the wall because of the location of the existing trees. We informed him that an extra pile could be added to the western end of the wall. We are labeling this pile N18. We observed the installation of 4 piles (N12 through N10, and N18) as shown on the Site Plan. Each hole was augured with a. 24-inch auger to approximately one foot below the planned bottom of pile elevation. The soil that was exposed during the excavation consisted of brown -gray, fine to medium sand with silt to silty fine to medium sand. We did not observe sloughing in the holes after they were drilled, and we did not observe evidence of groundwater.. All the holes were backfilled today with CDF and the top of the piles were set at an elevation of 190 feet +/- 0.1 inches. We observed that the black pipe running down the slope that previously transported the water generated on the site down towards the creek was cut in to several pieces starting at the property line. Several cut pieces are located on the neighboring property. We will return to the site tomorrow to continue to observe the wall installation. Based on our observations while on site, it is our opinion that the retaining wall is being installed in general accordance with the wall design. Attachment: Site plan + wall profile Distribution: Signed: —�