Laserfiche WebLink
The existing pond area of 6.45 acres will not be expanded or lessened for the post -mining land use <br />although the configuration of the ponds will change, as is seen on Map F-1 and F-2. For this reason, no <br />gravel well permit is needed. <br />Quaternary age flooding of the River produced the gravel deposits (with alluvial gold) that currently <br />exist on the site. Uphill and east of the site is the Columbia Ditch, which is also owned by the Ducommun <br />Trust and has been in place for many decades. It supplied past mining operations with water to wash <br />gold from the gravel. This ditch begins at the Columbia Reservoir north of the permit area and can be <br />intercepted at any location in the permit area to provide water to the site. The ditch is earth lined and is <br />approximately 3.0 feet wide and 1.5 feet deep. It is used during the spring, summer and fall months and <br />requires maintenance from time to time. The ditch is outside the permit area since it has been in place <br />for many decades. This ditch will be used to provide some water to either of the mining operations and <br />will probably also be used to supply ponds once the post mining site is ready for development. <br />2.0 Water Use for the Operation <br />Water for processing, dust control and materials handling will come from two sources that the <br />Ducommun Trust has on the site: <br />2) All water available from the pump at the "Point of Diversion" in the South Platte River as shown on <br />Map C-2. This right is owned by the Trust and allows water extraction up to 5.0 cfs. The gold operation <br />has used this source in the past mining and processing activities. <br />3) <br />4) The Trust also can use the Columbia Ditch located immediately east of the permit area. Two existing <br />takeoff ditches bring water to the permit area. This ditch can also be used to supply the site only to <br />the point that the combined flow from both sources does not exceed 60.0 cfs. <br />The water rights for this property are sufficient for any possible use. The documents are included in <br />Appendix A - Right of Entry. <br />Alma Place Mine 01/15 61 <br />