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if <br />ASCG <br />INCORPORATED <br />ENGINEERS • ARCHITECTS • SURVEYORS • PLANNERS <br />June 10, 2005 <br />Mr. Ted Kowalski <br />Legal Protection Specialist <br />Colorado Water Conservation Board <br />1313 Sherman Street, Room 721 <br />Denver, Colorado 80203 <br />Ms. Angeline C. Kinnaird <br />Program Director <br />Board of Licensure for Professional Engineers and Professional Land Surveyors <br />Department of Regulatory Agencies — Division of Registrations <br />1560 Broadway, Suite 1300 <br />Denver, CO 80202 <br />Re: Professional Engineering Problems <br />Recreation Engineering and Planning <br />Mr. Gary Lacy PE <br />Recreational In- Channel Diversion (RICD) Application Support; <br />Engineering Analysis and Design of River Facilities including Bed and Bank <br />Modifications and Low Head Dams for River Parks, <br />Salida, Buena Vista and Other Sites in Colorado <br />Dear Mr. Kowalski and Ms. Kinnaird: <br />Mr. Kowalkki and Mr. Thomas Browning of the Colorado Water Conservation Board asked me to <br />conduct a review of the Recreation Engineering and Planning's Report for the RICD in Buena Vista <br />and Salida, Colorado on the Arkansas River. Review of the report has raised concerns regarding <br />the engineering standard and conduct supporting the document. Various modifications of the river <br />have been made to develop a river park in each community and enhance whitewater recreation. <br />Substantial modifications of the Arkansas River have been made, Many similar modifications have <br />been designed by Recreation Engineering and Planning on other rivers. Typically the key <br />structures are low head dams formed of plain and grouted boulders and other riprap work. They <br />back up the water and create a fall which creates whitewater features. <br />q3 <br />12596 WEST BAYAUD AVENUE, SUITE 200, LAKEWOOD, CO 80228 <br />303.458.5550 FAX 303.480.9766 <br />