1004 BROADWAY EVCC STUDENT HOUSING - REPORTS & FINAL DOCUMENTS 2017-01-13

Geotechnical Report - : __ :�ised � ' 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 EXPLORATIONS 3.1 SITE GEOLOGY General geologic information far the project area was obtained by reviewing thc Geologic Map of the Marysville Quadrangle, Snohomish County, Washington (Minard 1985). Based on our review, the project site is underlain by Vashon Till — Geologic Map Unit Qvt�. Vashon Till consists of an unsorted deposit (diamict) of clay, silt, sand and gravel that has been glacially transported and deposited. This soil has been directly deposited by a glacier and overridden by several thous�nd feet of glacial ice a.nd is typically dense to veiy dense. 3.2 SussuRracE EaPLouA�r�oN Three borings were drilled on the south parcel located at 1008 Broadway on March 3, 2015. The borings were drilled using an Acker Soil Mechanic, limited access drill rig operated by Boretec, Inc. subcontracted to PanGEO and were logged by an engineering geologist with our finn. The borings were drillecl to a maximum depth of 8 feet below existing grade. The approxiinate boring locations were located in the field by measuring fi•om property coiners and site features and are sllown on Pigure 2, Site and Exploration Plan. Standard Penetration Tests (SPT) were performed 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, Standa�d Test Method ,for Penetf�ation 7est and Splzt Barrel Sc�mpling of Soils. The soils were logged in generai accordance with ASTM D-2487 Standard P�°actice fo� Classification of Soils for Engineering Pitrposes and the system summarized on Figure A-1, Terms and Symbols for Boring and Test Pit Logs. On May 7, 2015, we returned to the site and excavated three test pits by hand on the center (1006 Broadway) and north parcel (1002 Broadway) to confirm the soil conditaons ol� thesc parcels are consistent with the soil conditioils o�l the south pat•cel. � l_>-U-4S 10OS l3rua<l�cay_ Rcvi'scd �l�e J Ptin�iL',�9 IIIG.