ARCHIVED REPORTS_2019 SOIL MGMT PLAN (JULY-REVISED)

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Murphy Parkway Warehouse December 19, 2016 Job No. 146-618 Page 2 PROPOSED CONSTRUCTION We understand the property will be developed for a single distribution warehouse. The warehouse will have plan dimensions of about 510 feet by 1680 feet. The building construction is expected to be of concrete tilt-up-panel design with a concrete slab-on-grade floor. Depressed portland cement concrete paved loading docks would be provided along the north and south sides of the building. Asphalt concrete paved automobile parking and driveways would be placed along the west side of the building. Truck driveways would surround the building and connect the docks to Murphy Parkway. Building foundation loads are expected to be moderate and typical to this type of construction. For the purposes of this report we have assumed that the building pad level will be near the average existing site grade. SITE CONDITIONS AND CONCLUSIONS SURFACE The subject site encompasses 48.6 acres and is situated between about 500 feet and 2800 feet east of the northerly end of Murphy Parkway. The property is bordered on the north by the shuttered Pilkington glass plant, and on the south by warehouse, trucking and distribution businesses. A pasture and lands of a Simplot fertilizer plant are to the east of the subject parcel. A shuttered cogeneration plant that apparently supplied the Pilkington plant, occupies the northerly portion of the parcel between Murphy Parkway and the subject site. An earth berm, power lines, and chain link fencing are along the northerly border at the glass plant. A drainage swale with trees is along the southerly edge of the site. Wire fencing is along the westerly border. Most of the property is relatively flat and is currently used as sheep pasture. The easterly portion supports dry weeds and new grass growth. Patchy weeds are present on the westerly portion. An eight- to ten-foot deep depression of an apparent former pond is on the northwesterly portion of the site. It appears the pond may have been used for disposal by the adjacent glass or cogeneration plants. Aerial photos also suggest that glass had been stored or disposed of on the northwesterly corner of the property, and was later spread further to the south. We observed considerable amounts of broken glass on the surface and mixed into the surface soils of the west edge of the subject property as well as on the southerly portion of the cogeneration parcel to the west. SUBSURFACE Boring 2 was drilled on the northwesterly corner of the property and found about five feet of fill on the surface. The fill was observed to consist loose to medium dense silty fine sands and to contain glass fragments and shards. Boring 2 was located in an area that is shown on aerial photographs to have supported large piles of glass beads or fragments. Except for the surface fills at Boring 2, the test borings revealed relatively uniform soil conditions across