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ROBERT .1. HUZ.IAK, P.E. <br />PAGE3 <br />• Provided general technical advice to City relative to development and purchase of <br />gravel pits and associated infrastructure. <br />SOUTH TANI DAM AND RESERVOIR PROJECT, THORNTON, COLORADO, FOR CITY OF <br />THORNTON. Project Manager for planning, design and construction phases to convert and <br />expand an existing gravel pit into a lined reservoir and jurisdictional dam. The project <br />increased available storage at the site by 270 percent, which resulted in a total storage <br />volume of 7,200 acre-feet. The project included a 3-mile-long soil-bentonite cutoff wall; a <br />zoned embankment dam up to 45 feet high; a surface water by-pass ditch to convey <br />diverted and storm water; reinforced concrete chute spillway; multiple large diameter <br />interconnect pipelines to adjacent reservoirs, a diversion ditch, and the South Platte River. <br />Developed a groundwater model to evaluate possible impacts to adjacent properties, alluvial <br />water users, and the South Platte River from construction of the lined reservoir and ancillary <br />facilities. Worked closely with the Office of the State Engineer, Division of Minerals and <br />Geology, Urban Drainage and Flood Control, and the U.S. Army Corps of Engineers to <br />obtain the required permits for the project, which is located within the 100-year floodplain <br />of the South Platte River. Part of the embankment was constructed above 25 feet of recent <br />tailings placed from the previous mining activities at the site. <br />NORTH LAKE RESERVOIR, WEST OF TRINIDAD, COLORADO, FOR CffY OF TRINIDAD. Project <br />Manager for dam safety modifications to this 70-foot-high earthen dam to improve seepage, <br />stability, embankment stability, and outlet surging problems. Project involved the video <br />inspection of pipelines under high-head conditions, Identified cost-effective solutions to <br />correct safety concerns. Prepared construction documents and provided construction <br />management for modifications to outlet works, embankment, and spillway. Replaced failed <br />valves in the outlet tower, designed and constructed a new stream release facility, and <br />abandoned an outlet pipe that contained numerous holes. All of this work was completed <br />while the reservoir was full. <br />Managed work to improve safety and meet State requirements while staging improvements <br />to work within the City"s budget constraints. Performed parts of the work using adesign- <br />build approach which enabled the engineer-contractor team to rapidly modify the <br />rehabilitation plan and sequence based on the actual conditions encountered. This <br />approach significantly reduced the overall cost to the owner and was one of the first design- <br />build dam remediation projects approved by the State Engineer. <br />Developed alternatives to replace the existing spillway that has both structural and hydraulic <br />deficiencies. Designed a relief well system to reduce high foundation water pressures that <br />were reducing overall seepage and slope stability. <br />EAST GRAVEL LAKES, ADAMS COUNTY, COLORADO, FOR CITY OF THORNTON. Project <br />Manager for conceptual design, final design, and construction management to convert an <br />existing gravel pit into a lined water storage facility. Work included geotechnical <br />investigations, evaluation of alternative liner systems, and altemative lake configurations. <br />Developed cost-effective concept to increase water storage by about 50 percent by <br />constructing a dam around the pit. Prepared final design analysis and bid documents for a <br />'~' ~ !~ <br />