ARCHIVED REPORTS_2019 SOIL MGMT PLAN (JULY-REVISED)

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Murphy Parkway Warehouse December 19, 2016 Job No. 146-618 Page 3 the property. The test borings generally encountered surface soils consisting of loose to medium dense, brown silty fine sands with some fine sandy silts and extending to depths of four to six feet. Beneath the surface sandy soils medium dense and sometimes variably cemented light brown fine sandy silts and silty fine sands often were encountered. These silty soils were observed to extend to depths varying from six to about nine feet. The silty layers often were underlain by medium dense to very dense white to light gray clean fine to medium sands. The clean sands were observed to extend to depths varying from 12 to 15 feet. Beneath these sands and extending to the 50 foot maximum depth drilled, interlayered light brown to gray stiff clayey fine sandy silts and very stiff silty fine sandy clays, as well as medium dense to very dense gray fine to medium sands were encountered. Borings 14 and 15 were drilled within the former pond areas on the northwesterly portion of the site and were drilled at elevations that appear to be seven to eight feet below the site grades outside of the pond limits. These two borings encountered interelayered sands and silts that are consistent with the soil profile of at similar elevations of the other test borings. BEARING CAPACITY The soils within the upper six or nine feet include loose sand and silt layers that can be subject to some densification and settlement under heavy loads. The native undisturbed soils are considered capable of supporting the planned construction. The building may be supported on spread foundations, however foundation bearing pressures must be limited to control settlements of the loose near surface soils. With the recommended earthwork preparation procedures, new engineered fills placed and compacted in accordance with the recommendations of this report are expected to have sufficient strength for support of the planned construction. EXPANSIVE SOILS The near surface soils consist primarily of low plasticity sands and silt. These soils are considered to be of low expansion potential. Expansive soils are not expected to have a significant effect on the planned construction. GROUNDWATER Groundwater was encountered in the test borings at depths varying from 13 to 17 feet below the ground surface. After drilling, water levels in the borings appeared to stabilize at depths of about varying from about 11 to 14 feet below the site grade. Although the groundwater level will fluctuate somewhat with rainfall and season, the level is expected to remain below final grade levels and not have a significant effect on completed surface improvements. Deep utility or other construction excavations may experience groundwater inflow. Foundation excavations at loading docks may encounter groundwater if constructed during a high groundwater period. Construction excavations extending more than about six feet below the original site grade may engage clean sands that can be subject to sloughing and caving regardless of the groundwater level. Below groundwater levels, the site silty soils also may be subject to sloughing and caving. Sloughing