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~~ <br />CERTIFICATION <br />I have reviewed the listed SEDCAD+ (hydrology and sedimentology) small area exemption <br />demonstrations files for the rockfall hazazd mitigation zones. The demonstrations are <br />consistent with the methodology of the SEDCAD+ documentation. Based on the <br />information provided, consideration of the limitations of the SEDCAD+ model, and effect <br />of minor adjustments in input, the approximations concluded aze, to the best of my <br />knowledge, values within the probable accurary of the model. <br />WTNKTREN <br />WTNKOUT <br />ETRENCH4 <br />06-06-1995 <br />OCr06-1995 <br />06-06-1995 <br />B~crft G. Walker, PE <br />Colorado Registration # 18378 <br />• <br />1 <br />is fw /PIaJ ~' <br />Dat/e <br />TAB 4.8, PG 2 <br />Permit Renewal No. 3 FCIRMERLY ~ A-I21 11/1/99 <br />