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FIELD REPORT <br />it son GEOTECHnim <br />ASSOCIATES, inc <br />17311 135th Ave. NE #A-500 <br />Woodinville, WA 98072 <br />(425) 486-1669 FAX 481-2510 <br />105 Palouse Street <br />Wenatchee, WA 98801 <br />(509)665-7696 <br />Project: Miller Residence Slope Stabilization NGA File: 13333B-22 <br />Client: Dennis & Chelsea Miller Date: 10/18/2023 <br />Location: 2702 — 59th Street SW Report No: 5 <br />Everett, Washington <br />Weather: Overcast; 57 °F Page 1 of 2 <br />Purpose of Geotechnical Consultation and By: SLD <br />Visit: Construction Monitoring <br />We visited the site today at the request of Pearson Drilling on behalf of the homeowners, to provide geotechnical consultation <br />services for the proposed slope stabilization project located at the above address in Everett, Washington. Upon arrival, we <br />met with Pearson to discuss project plans. <br />During our visit, we observed the installation of five of the planned soldier piles. The boreholes for each pile were drilled with <br />a 24-inch diameter auger. No groundwater seepage or sloughing was observed within the boreholes. However, a large rock <br />was encountered at a depth of roughly 4.0 feet within the borehole for P15. The rock was removed with the excavator and <br />then the hole backfilled and drilling of the borehole continued. The beams were placed within the drilled holes and the <br />contractor pumped cement mixture into the boreholes up to the embedment depth for each piles. The number of piles <br />installed and depth of hole from the existing ground surface can be found in Table 1 below in order each soldier pile was <br />installed. <br />Table 1 <br />Pile Number <br />Pile Length (ft) <br />Borehole Depth (ft) <br />Pile Schedule <br />P17 <br />28.5 <br />25.3 <br />W14x34 <br />P16 <br />28.5 <br />26.9 <br />W1434 <br />P15 <br />28.5 <br />26.7 <br />W14x34 <br />P14 <br />28.5 <br />26.5 <br />W14x34 <br />P13 <br />30.5 <br />27.5 <br />W14x34 <br />While on site we also observed as the contractor excavated the material around soldier piles P1 through P6 and <br />installed lagging within the 5 exposed bays. Lagging consisted of 12 by 4 pressure treated timber placed <br />between the piles with no spacing between the boards. <br />We have been providing geotechnical consultation and construction monitoring services on a full-time basis. Our findings <br />and conclusions are based on specific observations made while on site. In our opinion, the soldier piles observed today <br />were installed correctly and in general accordance with project plans. We will continue to monitor the installation of the <br />shoring system. <br />Attachment: Site Plan <br />Distribution: <br />Signed: <br />ForISaah L. Dunn <br />