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Chdl�xik Pant Mc��agc <br />htths:�ihlulh�l.nwil.Iivc.cc,n► mill I'n lit Nlcssagc>.a q)v ?cpIIIN :Iy�It�,�> <br />Varra Companies, Inc. - riverside berm breach - Greeley, <br />Colorado <br />l_�rom: Bradford .lanes (bl.jforester((i}msn.com) <br />Sent: 'l-hu I I / 14/13 1:24 PM <br />lo: 'ferry McKee ( tart .y.a.ntckee((i?usacc.armv.mil) <br />C'c: GC'VARRAVC'I (gcvarravci(u)aol.com) <br />5 attachments <br />L) urham _USGS_LocationMah.l)dt'(509.5 K13) , Exhibit 13.doc (2? M13) , <br />Durham BreachMcasttretiien ts.1x11'(634.2 K13) , Secd Mix Ldoc (38.5 K13) , Secd 1\141y <br />2.doc (39.0 K13) . <br />Terry McKee <br />Denver Regulatory Office <br />U.S. Army Corps of Engineers - Omaha District <br />Subject: Flood Impacts to our Durham operation in Greeley, Colorado - located in parts of Section <br />9 & 10; Township 5 North, Range 65 West, 6th P.M., Weld County, Colorado. <br />Good Afternoon Terry. <br />Our sand and gravel extraction activities at the above referenced operation in Greeley, were impacted by <br />recent flooding. Specifically, work completed under a CLMR (case number: 05- 08- 0565R), maintains <br />the existing floodway by establishing a riverside berm elevation into our operations of <br />4622.2- 4620.2 feet along a 1,260.6 foot concrete sill. The sill had a dimension of one foot in width <br />and a depth of 4 feet, and the pre -flood berm surrounding the sill was equal to or less than the sill <br />elevation. A segment of the berm and concrete sill was undercut by floodwaters, eventually <br />dropping into the underlying floodwaters, and leaving a gap in the riverside berm between the <br />river and our extracted basin apx. 291 feet long. We desire to fill this gap to the pre -flood <br />elevation and approximate extent. <br />Flooding along the Cache la Poudre River commencing on or near Thursday 12 September 2013, <br />progressed to overtop our existing CLMR constructed floodway dike, which breached approximately mid <br />day Sunday 15 September 2013. This correspondence serves multiple purposes. First, receding <br />floodwaters may negate the need for any Army Corps 404 permit; or the materials provided here -in may <br />qualify under Regional General Permit 96 -07, or Nationwide Permit NWP -13. <br />Flood waters have receded since the peak flows near Sunday 15 September 2013 had their way, leaving <br />a gravel bar of underlying (or possibly some flood born sediment), which needs to be returned to its near <br />pre -flood elevation. Because the underlying material now lies above the waters of the Cache la Poudre <br />River, there remains a possibility that a Nationwide Permit is no longer essential to make the repair. We <br />are providing information that we hope will allow the Army Corps to make a determination either way. <br />We can follow this message up with hard copies of the same should you require it. What follows is our <br />assessment and information necessary to either allow the project to occur either with or without a <br />I ol'II II IN 10I I I_' I C I "Ii <br />