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<br />Geotechnical Engineering Report <br />Eagleview Drainage Channel <br />Southwest of "F" Street and 35`h Avenue <br />Terracon Project No. 21035051 <br />Terracon <br />at approximate depths of 6 to 10 feet. These observations represent groundwater conditions at the <br />time of the field exploration, and may not be indicative of other times, or at other locations. <br />Groundwater levels can be expected to fluctuate with varying seasonal and weather conditions. <br />ENGINEERING ANALYSES AND RECOMMENDATIONS <br />~ Geotechnical Considerations <br />The site appears suitable for the proposed construction based upon geotechnical conditions <br />~ encountered in the test borings. <br />Based on the geotechnical engineering analyses, subsurface exploration and laboratory test results, it <br />is our opinion that the proposed drainage channel may be constructed at the site. It should be noted <br />that seepage analysis for the drainage channel was beyond the scope of services for the project. <br />Proposed box culverts may be supported by spread footing/pad foundation systems. <br />Design and construction recommendations for foundation systems and other earth connected phases <br />of the project are outlined below. <br />Foundation Systems <br />Due to the properties of the on-site soils and anticipated loading conditions, spread footing/pad <br />foundations bearing upon undisturbed subsoils and/or engineered fill appear suitable for support for <br />the proposed box culverts. The footings/pad may be designed for a maximum net allowable bearing <br />pressure of 1,500 psf. The design bearing pressure applies to dead loads plus design live load <br />conditions. The design bearing pressure may be increased by one-third when considering total loads. <br />Total settlement for the proposed culverts is estimated to be on the order of 1 inch or less. <br />Footings should be placed a minimum of 30 inches below finished grade for frost protection and to <br />provide confinement for the bearing soils. Finished grade is the lowest adjacent grade for pedmeter <br />footings. <br />Foundation excavations should be observed by the geotechnical engineer. If the soil conditions <br />encountered differ significantly from those presented in this report, supplemental recommendations will <br />be required. <br />4 <br />