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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 />II <br />I <br />I <br />I <br />I <br />I <br />II <br /> <br />I'JOlTE <br /> <br />BEYOND ENGINEERING <br /> <br />City of Brush <br />Storm Drainage Master Plan <br /> <br />Future Planning/Design Considerations <br />Limited information was available regarding existing drainage systems and <br />recommendations included in this study are based on a combination of available <br />information, engineering judgment and reports of historic flooding events by local <br />residents. While appropriate for planning purposes and comparison of alternatives, all <br />details of proposed drainage facilities should be evaluated in greater detail during final <br />design. <br /> <br />For retention facilities, 100-year, 24-hour duration storm runoff should be used as a <br />minimum design criteria wherever possible. The 100-year design volumes noted assume <br />that flows in excess of storm sewer capacity will be conveyed to the retention facilities <br />overland or by flowing in the street. Due to uncertainties in existing survey information <br />and existing street capacity, that assumption cannot be verified and it may not be feasible <br />to provide retention for the entire 100-year storm runoff. This should be evaluated during <br />future design efforts. <br /> <br />Nolte Associates,Inc. <br /> <br />18 <br />