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.PROJECT EXPERIENCE <br />Mr. Lytle has over 25 years of diversified project experience in designing, implementing and managing surface and <br />ground water-related projects throughout the United States. This experience includes: <br />~ surface and ground water modeling <br />alternatives evaluation For the development of water resources <br />~ operational studies [o determine water supply management with surface storage <br />~ surface and ground water hydrology studies <br />~ litigation support involving water quality and surface- andground-water hydrology <br />development of water supply management plans <br />~ evaluation of complex water supply projects related to physical and legal availability within the constraints <br />of the water rights system <br />Experience in surface water modeling includes the evaluation of legally available water supplies, reservoir operational <br />studies, delineation of flood plains, flood routing, sediment transport, and hydraulical ly-connected surface water/ground <br />water systems. Mr. Lytle has also been involved in many surface water supply evaluations, including assessment ofthe <br />legal andphysical availability ofwater, surface storage siting, reservoir operational smdies, assessment ofcontainment <br />transport via surface flows, and surface flow and water quality chazacterizations. <br />Experience in ground water modeling studies has included simulating the effects of large-scale well pumping on <br />adjacent water users, simulating the potential suitability of an injection program for underground water storage with <br />subsequent recovery by a pumping well, and simulating the potential for purging contaminants from alluvial and <br />bedrock aquifers by the use of pump and treat systems. Mr. Lytle has also conducted several evaluations of surface <br />water/ground water hydraulic interactions, including characterizations ofhydraulic and water quality interactions in <br />urbanized drainages and alluvial valley floor studies. This work has included the use of surface water/ground water <br />interactive models. <br />Recent projects have included the management of the surface and ground water modeling associated with an <br />Environmental Impact Statement to construct an off-stream reservoir to provide new, renewable water supplies for a <br />community in the southeastern Denver Metro azea. These smdies included the combined surface water/ground water <br />modeling of the Cherry Creek stream system [o assess hydrologic impacts and operational studies to evaluate the <br />operational characteristics of the proposed reservoir. This work has resulted in the issuance of the first Section 404 <br />permit for a water supply reservoir along the Front Range of Colorado in over 20 years. <br />Other recent work has involved the evaluation of alternative reservoir sites, selection of the preferred alternative, and <br />operational studies to evaluate water supply availability for a proposed mine near Fairbanks, Alaska. These studies were <br />conducted in support of obtaining a permit through the Alaska Department of Natural Resources. <br />Mr. Lytle has also been involved in many geohydrologic investigations, including the design and installation of <br />monitoring well and ground water sampling programs, as wel I as ground water modeling. This experience has included <br />predictirig the movement of contaminants to the ground water table and in the ground water system, and the associated <br />effects of contaminant movement in ground water with regard to health and safety issues and general water quality <br />degradation. It has also included the installation of groundwater monitoring networks to develop underflow and water <br />quality data bases. This work has also included smdies to evaluate the need to dewater portions of an aquifer to allow <br />mining to continue unimpeded by inflows to a pit or underground workings. <br />Surface water hydrology studies have included extensive work in the mining industry, developing baseline flow and <br />water qualitydatabases to define pre-mining conditions. Follow-up studies have typicallybeen conducted [o assist with <br />mine closure and re-establishment ofpre-mining hydrologic conditions. <br />BRUCE A. LYTLE, P.E. <br />