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• <br />• <br />Project Experience <br />• Structural analyses for structure stability under normal and extreme loadings. <br />Boyle uses several programs related to structural analyses, which include STADDII, <br />ANSYS, ALGOR, and other programs to design walls, slabs, etc. <br />• Civil engineering analyses related to site access and <br />layout of features appurtenant to dams. Boyle often <br />uses EaglePoint and similar software to perform site <br />work. <br />Design and analysis services on dams typically involve field <br />investigations to define material properties, the geologic extent <br />of rock units and soil mass, and the characterization of special <br />geologic features and discontinuities. Boyle has been <br />responsible for field investigations on new and existing <br />embankment, concrete, and RCC dams. Typically, these field <br />investigations included topographic survey, cross- section <br />surveys, geologic reconnaissance, drilling and field- testing; <br />borrow investigations, and laboratory testing. <br />Boyle has also been responsible for field investigations to assess environmental conditions <br />on water resource projects. Most projects begin with a preliminary field investigation to <br />determine existing conditions and establish biological benchmarks for a particular project <br />site. Biological benchmarks are the physical parameters of an existing habitat that can be <br />measured, quantified, and documented. These parameters are then used as a template <br />for the replication, restoration, and enhancement of the natural habitat during the design <br />process. Field investigations on our projects have included wetland delineations and <br />inventories, surveying, habitat evaluations, threatened and endangered species surveys <br />and streambank stabilization evaluations. <br />Geotechnical studies on existing dam projects generally focus on embankment <br />performance, foundation behavior /seepage analysis, and seismotectonic influences on <br />structure stability. Studies performed on Boyle water resource projects include the <br />following: <br />• support on project permitting; <br />• characterizing borrow sources (for aggregate, structural fill, common fill, rock fill, <br />riprap, and earthen filter and drain materials); <br />• defining geologic hazards (slope instability, expansive /collapsible soils, karst, fault <br />rupture, strong ground shaking and related secondary seismic effects such as <br />liquefaction); <br />• characterizing ground water resources and /or seepage /dewatering conditions. <br />Geotechnical studies have included a full range of technical analyses, including slope <br />stability, compression and consolidation (settlement), seepage and dewatering, loadings <br />on backfilled structures and buried outlets, and shallow and deep foundation parameters <br />(bearing capacity, shear strength, etc.). An important component of these studies is testing <br />of selected samples derived from the field investigations. Tests include routine index <br />property and gradation testing, as well as more sophisticated strength (direct shear, triaxial <br />compression), permeability, and deformation (consolidation, swell /expansion, etc.) testing. <br />These geotechnical studies are tailored to provide the input required to support dam safety <br />34 <br />