11020 19TH AVE SE BARTELL DRUGS 2016-01-01 MF Import

i d Subsurface Ezpformion and + Silvcr Lake h1c1!Bnrtef!Drug Smre Ceotecl�nicnl Engineering Repart Everert, Nashington Project and Site Conditions � based on the Yield logs, drilling action, and inspection of the samples secured. In addition to the two recent borings complered by Associated Earth Sciences, Inc. (AESI), the logs for five � monitoring well borings completed by Landau Associates (Landau) in 20C2 are included in the Appendix and were reviewed for this report. � Disturbed but representative samples �vere obtained by using the Standard Pcne[ration Test (SPT) procedure in accordance .vith American Sociery for Testing and Materials (ASTM):D I 1586. This test and sampling method consisrs of driving a standard 2-inch outside-diameter, split-barrel �ampler a distance of 18 inches into the soil with a 140-pound hammer free-falling a distance of 30 inches. The number of blows for each 6-inch �nterval is recorded and the � number of blows required to drive the sampler the final 12 inches is hnown as the Star.dard Penelration Resistance ("N") or blow count. IY' a total of 50 is recorded �vithin one 6-inch interval, the bluw count is recordcd as the number of biows for die corresponding number of � inches of penetration. The resistance, or N-value, provides a measure of the relative densiry of granul�r soiis or the relative consistency of cohesive soils; these values are plo[ted on the attached boring logs. � The :;amples obtained from the split-barrel sampler were dassified in the field and � representative portions placed in watertiglu cuntainers. The samples were then transported to our laboratory for further visual classification and laboratory testing, as necessary. � 3.2 Exploration Pits Gxploration pits were excavated witli a tractor-mounted backhoe. Tlie pits pennitted direct, � visual observation of subsurPace conditions. Materials encountered in the exploration pits wcre studied and classitied in d�e lield by an engineering geologist frum our firm. All exploration oits were backtilled immediately after examination and logging. i 4.0 SUBSURI=ACG CONDII'IONS �` Subsurface conditions at the project site were inferred frum the 6eld exploratio�s accomplished � for d�is study, visual reconnaissance of tlie site, and review of applicable geologic literamre. As shown on the tield logs, the explorations ;enerally encountered loose or soft fill and peat overlying natural deposits o[ very dense, silty, gravelly sand. In die south-central portion of � the site, thc loose sandy fill overlaid dense crushed rock fill. The following section presents more detailed subsurface infonnation organized from the shallowest (youngest) to the deepest (oldest) sediment typ�s. � � � ASSOCI�lTED LARTH SC/EA'CES, ItJC. December�Q _OOd �� � �.vs.i,t.nvoresf,iz r.,,,�«,�:aia,:vne•e�ur Page 3 '�