1004 BROADWAY EVCC STUDENT HOUSING - PUBLIC WORKS 2017-01-13

Geotechnical Report - Revised Proposed Apartments: 1002, 1006, and 1008 Broadway Street, Everett, Washington May 12, 2015 have been correctly interpreted and adequately implemented in the construction documents. 3.0 SUBSURFACE EXPLQRATIONS 3.1 SITE GEOLOGY General geologic information for the project area was obtained by reviewing the Geologic Map of the Marysville Quadrangle, Snohomish County, Washington (Minard 1985}. Based on our review, the project site is unde�-lain by Vashon Till — Geologic Map Unit Qvt. Vashon Till consists of an unsorted deposit (dia�nict) of clay, silt, sand and gravel that has been glacially transpot�ted and deposited. This soil has been directly deposited by a glacier and oven•idden by several thousand feet of glacial ice and is typicaliy dense to very dense. 3.2 SUBSURFACE EXPLORATION Tlu•ee borings were drilled on the south parcel located at 1008 Broadway on March 3, 2015. The bot7ngs were drilled using an Acker Soil Mechanic, limited access drill rig operated Uy Boretec, Inc. subcontracted to PanGEO attd were logged by an engineering geologist with our firm. The borings were drilled to a maximum depth of 8 feet below existifig grade. The approximaie boring locations were tocated in the field by measuring from propei-ty corners and site features and are sliown on Figure 2, Site and Exploration Plan. Standard Penetration Tests (SPT) were per•formed at 2'/z- to 5-foot depth intervals using a standard, 2-inch diameter split-spoon sampler. The sampler was advanced with a 140- pound drop hammer falling a distance of 30 inches for each strike, in general accordance with ASTM D-1586, Starulard `I'est Metho�l for Penetf•ntioft Test and Split Barrel Sa�npli�7g of Soils. The soils were logged in general accordance with ASTM D-2487 Standar•d Pr�actice for Classifrcation of Soils for Engineering Putposes and the system summarized on Figure A-1, Teims and Symbois for Boring and Test Pit Logs. On May 7, 2015, we returned to the site and excavated three test pits by haud on the centei• (]006 Bi•oadway) and north parcel (1002 Broadway) to con�rm the soil conditions on these parcels are consistent with the soil conditions on the south parcel. 15-04ti 1003 l3roadway, Reviscd ��abE � �b1D��?C); II]C.