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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />STUDY <br /> <br />AREA <br /> <br />SECTION I <br />INTRODUCTION <br /> <br />The "Major Drainageway Planning Sloan's Lake Basin" Report, Phase A was <br /> <br />prepared for Urban Drainage and Flood Control District by URS Company <br /> <br />in March 1977. The Phase A report provides an overview of the drainage <br />and flood control problems and the general concepts of solutions to <br /> <br /> <br />the problems in the Sloan's Lake Basin. This prel iminary design, Phase B <br /> <br /> <br />report will further examine and provide a preliminary design for the <br /> <br /> <br />selected alternative in sufficient detail for planning and proceeding <br /> <br />with final design plans and specifications. <br /> <br />The decisions reached in Phase A are re-examined in light of final <br /> <br /> <br />hydrologic and hydraulic studies. A preliminary drainage and flood <br /> <br /> <br />control design for the selected alternative is then presented with plan <br /> <br /> <br />and profile drawings. Cost estimates including all maintenance aspects <br /> <br />are tabulated by reach and a recommended staged construction program is <br /> <br />included. The results of this preliminary design are summarized in the <br /> <br />letter of transmittal at the beginning of the report. <br />