3214 BROADWAY BROADWAY KINECT APARTMENTS 2021-08-11

• American Property Development ES-0599.06 • January 22, 2015 Page 4 • Updated June 9, 2016 • • Geologically Hazardous Areas and Environmental Sensitive Features Review • • As part of our report preparation, we reviewed available maps and resources to identify • designated geological hazardous areas for the site. Specifically, we reviewed the city of • Everett's municipal code regarding Environmental Sensitive Features (37.40) and Geological Hazardous Areas (37.080). • • Everett's municipal code designates slopes of forty percent or greater, landslide hazard areas, • seismic hazard areas and erosion hazard areas to be geological hazardous areas. Wetlands, flood plains and known erosion sensitive areas are listed as sensitive environmental features. • A review of the Everett Department of Public Works and Planning (DPWP) records did not • uncover any documentation indicating the subject property (or adjacent properties) possess • geological hazardous areas or sensitive environmental features. Nor did interviews with departmental personnel reveal any oral record or known history of geologically hazardous • activities or environmental sensitive features in the subject property's vicinity. Furthermore, • ESNW has researched the subject's property's history back to 1894 and did not uncover any • incidents indicating a geological hazard impacting the subject property. • Based on our review of the available resources, the subject site is not located within any DPWP • designated geologically hazardous areas or environmentally sensitive features. • DISCUSSION AND RECOMMENDATIONS • • General • • Based on the results of our study, construction of the proposed apartment complex at the subject site is feasible from a geotechnical standpoint. The primary geotechnical • considerations associated with the proposed development include temporary slope • excavations, excavation support, and foundation support. Based on the results of our study, • the proposed building structure can be supported on conventional spread and continuous • footings bearing on competent, undisturbed native soil. Based on the proposed excavation, we anticipate competent native soils suitable for support of foundations will be exposed at the • foundation subgrade elevation. Where loose or unsuitable soils are exposed at the foundation • subgrade elevation, the soils should be overexcavated and replaced with a suitable crushed • rock material in foundation areas. • Where sufficient space is available, a portion of the lower level excavation may be completed • using temporary open cut excavations. Temporary shoring or a combination of shoring and • temporary slopes will be necessary where the building will be sited in close proximity to the • property limits. In our opinion, where shoring is necessary, the use of a conventional cantilever • or tieback shoring system is feasible for temporary support of excavations. In our opinion, soil nailing is also a feasible alternative for excavation shoring. For purposes of this study, • recommendations for conventional shoring and soil nailing are provided. • • • Earth Solutions NW,LLC • • •