954 NORTH PARK DR 2023-10-31 - Laserfiche WebLink

GeoTest Services, Inc. September 6, 2019 Proposed Swimming Pool — 954 North Park Drive, Everett, WA Project No. 19-0361 Table 2 Details on Winter 1996-1997 Slope Movements Label* 127 128 129 Approximate Location Relative NW of Site N of Site NE of Site to Site Approximate Dimensions 30 ft by 90 ft 20 ft by 100 ft 60 ft by 50 ft (Width x Height) Approximate Area 2,700 ft2 2,000 ft2 3,000 ft2 Approximate 45 45 50 Slope Angle, deg Type of Slide Debris Flow Debris Flow Shallow Earth Soil Type Colluvium Colluvium Sand/Clay Upslope Runoff; Slide Other Remarks runout partially Slide runout partially c covered BNSF tracks covered BNSF tracks * Labelling from Shannon and Wilson Study, 1997 Data Source: Baum et al., 2000 Otherwise, no substantial indications of tension cracks or large-scale head scarps associated with slope instability were observed either or directly adjacent to the subject property. Please note that not all signs of slope instability can be observed in bare earth imagery due to resolution and scale. Bare earth imagery was also used to generate a cross-section of the hazardous slopes adjoining the property. The Bare Earth Image and cross-section are shown in Figures 3 and 4 of this report, respectively. CONCLUSIONS AND RECOMMENDATIONS Based on the evaluation of the data collected during this investigation, the subsurface conditions at the site appear to be suitable for the proposed development, provided the recommendations provided herein are incorporated into the project design. A discussion of the Geologic Hazards that may be present on or adjacent to the subject property is presented in the following sections. Note that in the following sections, "EMC" refers to the Everett Municipal Code. Landslide Hazards and Slope Stability EMC Section 19.37.080.A.1 states that "very high" landslide hazards are those with "slopes greater than 15 percent in the Qtb, Qw, and Qls geologic units," while "high" landslide hazards 10