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Veritas Construction Inc ES-4011.03 I <br /> June 17, 2016 Page 4 <br /> Revised June 22, 2016 <br /> In addition, the referenced WSS resource identifies Alderwood-Everett gravelly sandy loam with <br /> slopes of 25 to 70 percent across the majority of the site and surrounding areas; Alderwood <br /> gravelly sandy loam with slopes of 0 to 8 percent are identified in the southeast area of the site <br /> and Alderwood gravelly sandy loam with slopes 15 to 30 percent are identified in the northwest <br /> area of the site. Based on our field observations and reported subsurface data, native soils on <br /> the subject site are generally consistent with the geologic setting outlined in this section. <br /> Groundwater <br /> Groundwater seepage was encountered at a depth of 29 feet below existing grades at one <br /> boring location (B-1) during our subsurface exploration completed on April 18, 2016. 111 <br /> Groundwater was not encountered during our subsurface exploration completed in July 2015; <br /> however, light to moderate (perched) groundwater seepage was reported in the referenced <br /> AESI report at depths of one to six feet below existing grades. Subsurface exploration was <br /> conducted in March 2000 and December 1988 for the AESI report. <br /> Our interpretation of the reported groundwater seepage is that of a perched condition atop the <br /> relatively impermeable glacial till. Groundwater seepage is common within glacial till, and is <br /> typically observed at the contact with the dense to very dense, unweathered deposits. It should 111 <br /> be noted that groundwater elevations fluctuate depending on many factors, including <br /> precipitation duration and intensity, the time of year, and soil conditions. In general, <br /> groundwater levels are generally higher during the wetter, winter months. With respect to the <br /> proposed development activities, locally perched seepage zones should be expected in <br /> underground utility and general site excavations, but flow volumes are expected to be relatively <br /> light. I <br /> Geologically Hazardous Areas <br /> As part of this proposed, the site and development areas were evaluated for the presence <br /> of geologically hazardous areas. As part of our evaluation, Chapter 37 of the Everett Municipal <br /> Code (EMC) was reviewed as well as critical area maps provided by the City of Everett. i <br /> I <br /> I <br /> Earth Solutions NW,LLC <br /> I <br />