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Tebks4.1 summarizes constructed conditions for sediment ponds K42C|1 through <br /> MO01. <br /> TABLE4.1: SEDIMENT POND KR201 THROUGH M601 SUMMARY <br /> Dam Crest Elevation 6819 feet <br /> 176832 feet 6847 f�eet 6709.5 feet 6684 feet <br /> Dam Crest Width 32 feet 30 7feet 36 feet 12 feet 15 feet <br /> 200 feet south <br /> Dam Location As designed As designed As designed of designed As designed <br /> location <br /> Primary Water Corrugated 1 perforated perforated perforated perforated <br /> Outlet Steel Pipe CSP CSP <br /> standpipe standpipe standpipe standpipe <br /> standpipe <br /> Northwest of South dam <br /> Spillway Location West of dam West of dam North of dam <br /> dam face <br /> Spillway Invert <br /> Elevation <br /> Spillway Depth 2 feet 1 foot 0.5 feet 1 foot 2 feet <br /> Spillway Width 30 feet i 40 feet 10 feet 10 feet 10 feet <br /> Spillway Erosion <br /> Protection <br /> Note: Constructed conditions estimated from available topography and aerial imagery. Detailed surveys not <br /> available for N12D1. M3O1. and M4O1 <br /> Based on anecdotal evidence, pond, api!}way, and road areas were cleared of vegetation before <br /> construction. Juniper and pinion trees removed during vegetation clearing were stockpiled outside <br /> the construction area for use in future reclamation. <br /> The ponds were created by constructing d8noG from indigenous fill material. Spillways were <br /> excavated into native ground. Spillways are lined with riprap (approximately 1 foot deep) for <br /> erosion protection, The CSP standpipes were constructed with a surrounding gravel pack and <br /> wire mesh screens to prevent clogging. The CSP standpipe outlets and spillways are protected <br /> against erosion with riprap splash pads. Construction records are not available, hovvever, the <br /> ponds were constructed over 10yeara ago and no significant issues with performance (such as <br /> erosion, cracks, |aGko, etc.) have been noted. BLK8and CO DRK8S have inspected the ponds <br /> annually with no significant exceptions. <br /> The single-lane road between ponds was constructed using cut tofill nl*dhods, following existing <br /> terrain as much as possible to reduce surface disturbance. Ponds and roads will be reclaimed as <br /> described in existing permits (CO ORIMS. 2OO1; BLM. 2OO2). <br /> 40 <br />