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' The spill discharge estimates and the 100-year floodplain for the FEMA Certified Levee <br /> Condition in the vicinity of the Flatiron Property is shown on Figure 6. The floodplain <br /> ' map for the certified flood levee condition indicates that approximately 82 of the 308 <br /> acres of the Flatiron Property would be inundated during the 100-year flood. <br /> Approximately 48 of these inundated acres are at the south and southeast edge of the <br /> property outside the flood protection levee and would remain in the 100-year floodplain <br /> ' under both conditions 1 an 2. <br /> The HEC-2 analysis indicates the South Boulder Creek flow regime adjacent to the berm <br /> during the 100-year flood is flowing critical (Cross Sections 30030 through 30080). <br /> Average velocities adjacent to the berm range from a low of 1.22 feet per second (fps) to <br /> a high of 9.5 fps. <br /> ' A comparison of main channel 100-year spill discharges found in the regulatory (G&O) <br /> model to Condition 1 - "100-Year Floodplain Model - No Levee with 200-Foot Wide <br /> Channel and Condition 2 - 100-Year Floodplain Model - FEMA Certified Flood <br /> Protection Levee are shown in Table 1 below. The results indicate the total volume of <br /> ' 100-year flood waters that split from the main channel of South Boulder Creek is greater <br /> under Condition 1, No Berm Condition than under Condition 2, the FEMA Certified <br /> ' Levee Condition. <br /> I <br /> 1 <br /> ' -20- <br />