313 76TH ST SE WESTERN WIRELESS CORPORATION Geotech Report 2018-01-02 MF Import

ADaPT Engineering, Inc. Western Wireless Corporation AMPT Job No. WA98.993 April I, 1998 Page 2 During drilling, soil samples were obtained on 5-foot depth intervals using the Standard Penetration Test (SPT) procedure (ASTM: D 1586). This test and sampling method consists of driving a standard 2-inch outside diameter(OD)split-barrel sampler a distance of 18 inches into the soil with a 140-pound hammer, free-falling a distance of 30 inches. The number of blows required to drive the sampler through each of the three, 6-inch intervals is noted. The total number of blows struck during the final 12 inches of penetration is considered the Standard Penetration Resistance, or"blow count". If 50 or more blows are struck within one 6-inch interval, the driving is ceased and the blow count is recorded as 50 blows for the actual number of inches of penetration. The resulting Standard Penetration Resistance values provide a measure of the relative density of granular soils or the relative consistency of cohesive soils. The boring log appended to this report describes the various types of soils encountered in the boring, based primarily on visual interpretations made in the field. The log also indicates the approximate depth of the contacts between different soil types, although these contacts may be gradational or undulating. Where a change in soil type occurred between sampling intervals, we inferred the depth of contact. Ir. addition, the log indicates the depth of any groundwater observed in the boring; the Standard Penetration Resistance at each sample location,and any laboratory tests performed on the soil samples. SITE. CONDITIONS The following sections describe our observations, measurements, and interpretations concerning surface, soil, groundwater,and seismic conditions at the project site. Surface Conditions The host parcel is located at 319 76'" Street SW in Everett, Washington (Figures 1 and 2). The proposed lease site is located near the southwest comer of an existing water reservoir site for the City of Everett. In addition to the steel tank reservoir which is located centrally on the host parcel, the site also supports an existing guyed tower and a wooden pole used for antenna support. The reservoir site is fenced and nearly level topographically. The reservoir site is mowed, and is covered by low grass. The area to the west is heavily vegetated with large trees and brush, and grades drop to the west outside the reservoir fence. The tower site is accesses' by an existing gravel surfaced access road, extending northwards from 76'" Street SW. "rwo existing storage sheds are situated on the north side of the access roadway. According to information provided to AMPT by Western Wireless Corporation,the elevation of the proposed tower lease site is approximately 584 feet above the mean sea level.