Laserfiche WebLink
Banks and Gesso, LLC <br />Incidental Products <br />It is not anticipated that there will be any incidental products as a result of this proposed <br />mining operation. <br />Explosives and Chemicals <br />Explosives will not be used at this operation. <br />All material mined and processed does not proceed through any chemical treatment, <br />therefore there are no "tailings" that need to be disposed. Earthen materials that cannot <br />be sold as a product will be used in reclamation <br />Dewatering <br />The operator plans to dewater when groundwater is encountered. Preliminary data <br />indicate that a significant portion of the deposit resides in an alluvial groundwater <br />aquifer, with the water table encountered at a depth below the existing ground surface <br />ranging from 5 to 15 feet. <br />Pumps will feed temporary trenches or pipes, running from the active mining area to the <br />freshwater pond, a basin area to combine stormwater functions with clarification of <br />pumped water. The mining area will typically be dewatered by a trench, which will be <br />partially cut around the perimeter of the pit. All water generated from the dewatering <br />operation will either be used as part of the operation or discharged back into Fountain <br />Creek. Except for diversion of some water, as permitted by law under a Temporary <br />Substitute Supply Plan or other decree, all collected waters will be discharged to <br />Fountain Creek at a common outlet. Water that is discharged into Fountain Creek will <br />meet the standards established in Lafarge's CDPS permit. <br />Based on plans to sequence mining and move overburden into backfill areas <br />immediately, it is estimated that dewatering will be limited to approximately 30 acres at <br />any one time. Once the water table has been lowered or dewatering results in a <br />sufficiently dry alluvium, front-end loaders will excavate the material and deposit it into <br />feeders and convey it to the plant area. <br />Sundance Santl and Gravel Resource 06015 <br />Lafarge West, Inc. 11 September 2006 <br />