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<br />? <br /> <br />'\ <br /> <br />. <br /> <br />. <br /> <br />. A status update letter regarding the levee review was distributed by Les Botham. <br /> <br />. The geotechnical field work has been completed, and the consultant is now conducting lab <br />tests. <br /> <br />. Thc preliminary rcsults ofthe geotccOOical revicw will likely be completed within two wecks <br /> <br />. The Flatirons company is moving ahead with the application to requcst levec ccrtification <br />from FEMA <br /> <br />. There is no set criteria for spacing of the test holes along the levee. John Liou said that <br />FEMA will require the engineer to justify and substantiate the test hole spacing as part of the <br />application submittal. <br /> <br />. FEMA has taken a very hard stand regarding ccrtification of private levees. This is due to <br />numerous private levcc failures during flooding from 1993 to present in several areas of the <br />country. The Flatirons levee is considered to be private because its design and construction <br />was not performed by the Corps of Engineers. <br /> <br />. The levee certification will require the applicant to satisfactorily address FEMA technical <br />criteria including I) gcotechnical/stability analysis, 2) hydraulic analysis/freeboard, 3) <br />interior drainage, 4) levee geomctry, and 5) other criteria as outlined in thc application <br />forms. <br /> <br />. Les Botham would like to be providcd with a copy of the "final" hydraulic computer models <br />in order to assess the levee freeboard requirements. <br /> <br />. The levee owners are willing to rehabilitate the levec to mcet or cxceed FEMA criteria, <br />which may include an additional 6 to 12 inches of freeboard above what is required. <br /> <br />. The Flatirons company wants to certify the middle and upper portions of the levee, and not <br />the downstream portion of the levee. Thcy can have the application materials ready for <br />submittal within 60 to 90 days. <br /> <br />. Local officials (Boulder County and the City of Bouldcr) will be asked to review the request <br />for levee certification, and will be able to provide their comments to FEMA. According to <br />Larry Lang, the University could submit the certification request dircctly to FEMA without <br />having to receive comments from local officials. This would be truc of all State govcmment <br />agencies. <br /> <br />Hydraulic Analyses <br /> <br />. There have been sevcral floodplain studies performed in the study area. The Corps of <br />Engineers originally developed the hydrology for South Boulder Creek, Greenhorne & <br />O'Mara (G&O) completed a floodplain study for thc cxisting FEMA Flood Insurancc Study, <br />Love & Associates (Love) reviewed and revised the G&O results, and Taggart Engineering <br /> <br />2 <br />