2702 59TH ST SW 2024-07-05 - Laserfiche WebLink

FIELD REPORT ULM GEOTECHnICAL ASSOCIATES, Inc 17311 135th Ave. NE #A-500 Woodinville, WA 98072 (425) 486-1669 FAX 481-2510 105 Palouse Street Wenatchee, WA 98801 (509) 665-7696 Project: Miller Residence Slope Stabilization NGA File: 13333B-22 Client: Dennis & Chelsea Miller Date: 10/16/2023 Location: 2702 — 59th Street SW Report No: 3 Everett, Washington Weather: Light Rain; 50s OF Page 1 of 3 Purpose of Geotechnical Consultation and By: ABR Visit: Construction Monitoring We visited the site today at the request of Pearson Drilling on behalf of the homeowners, to provide geotechnical consultation services for the proposed slope stabilization project located at the above address in Everett, Washington. Upon arrival, we met with Pearson Drilling to discuss project plans. The contractor planned to begin drilling for installation of the vertical elements of the planned soldier pile wall. 1-beams to be installed in the drilled holes were stockpiled along the southeastern portion of the site and were measured to verify dimensions conform with the approved plans. The contractor was utilizing an excavator mounted drill mast to advance 24-inch auger to the specified depths. Immediately above the surveyed drill locations, a vertical cut on the order of 2- to 4-feet in height was previously made at roughly the location of the upper landslide scarp. We did not observe shaft caving issues during the drilling activities and only encountered very minor groundwater seepage approximately 4-feet below the ground surface at pile 2 location. After completion of the 7 piles installed today, each shaft was filled with Portland cement mixture to top of hole (bottom of excavation). A summary of the drilled shafts completed today is shown in Table 1 below. Table 1 Pile Number Approx. Depth of hole (feet) Pile 2 24.5 Pile 3 29.0* Pile 4 24.5 Pile 5 24.5 Pile 6 24.5 Pile 7 24.8 Pile 8 24.5 *30.5' length pile installed at this location, longer than specified on plans. In preparation for drilling, the work area was previously stripped of loose slide debris and topsoil to form a roughly uniform grade from the approximately the crown of the slide to the newly installed silt fence along the southern grading limits specified on the plans. Gravel surfacing was imported to the site to form an equipment access ramp and drill pad extending from the southeast corner of the house and down below the pile alignment. Steel plates were also placed on the concrete driveway and on the grass eastern side yard to allow for equipment access into the southern backyard work area and an Attachment: Site Plan Signed: Distribution: