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' return to its floodplain. The current G&O study incorrectly states that <br /> approximately 1,660 cfs spills to the north and rejoins the South Boulder Creek <br /> main channel floodplain downstream of US Highway 36. <br /> 4. Since 1973 when the R.W. Beck study was published, it was identified that <br /> properties in the Keewayden Meadows neighborhood and other properties to the <br /> ' north of US 36 are at risk from flooding of South Boulder Creek. The split flows <br /> in South Boulder Creek existed prior to the mining of the Flatiron property due to <br /> ' the construction of the elevated section of U.S. Highway 36 which was built in <br /> the late 1950's. <br /> 5. If a FEMA certified flood protection levee is completed on the Flatiron Property, <br /> the neighborhoods to the north of U.S. 36 would be in less of a flood hazard than <br /> ' without the levee in place. Additionally, the levee will serve to keep the majority <br /> of the Flatiron Property out of the South Boulder Creek 100-year floodplain. <br /> ' Under Condition 1, 100-Year Floodplain Model - No Levee with 200-Foot Wide <br /> Channel approximately 113 acres or 37% of the property is within the floodplain. <br /> Ten of these 113 acres would be in a shallow flooded condition and could be <br /> removed with minor modifications to the interceptor channel. Under Condition <br /> 2, 100-Year Floodplain Model - FEMA Certified Flood Protection Levee, 82 <br /> acres or 27% of the property would be located within the South Boulder Creek <br /> 1 floodplain. In neither condition is a majority of the Flatiron Property in the South <br /> Boulder Creek floodplain. <br /> RECOMMENDATIONS <br /> Based upon the findings of the hydraulic analyses of the South Boulder Creek 100-year <br /> ' floodplain in the vicinity of the Flatiron Property it is our professional opinion that it <br /> would be in the best interests of all parties to have the berm on the Flatiron Property <br /> ' certified as a FEMA approved flood protection levee. The certification process is very <br /> extensive in its requirements. Numerous engineering tests and calculations will be <br /> -24- <br />