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1 1 1 1 The Ready Mixed Concrete Company plans to have both a mining and concrete batching operation located on the property. There are three areas of consumptive use that arise from an operation of this type. These include moisture loss Prom gravel hauled from the property, dust control of haul roads and water used in the concrete batch plant. Water losses due to lake evaporation during mining is not considered as a consumptive use. This is based o» the current ruling by Judge Behrman in Division I Water Court on the Zigan Case. It was specifically stated in Chia case that water augmentation for lake evaporation is not required during mining operations. The case is currently being appealed in the Colorado State Supreme Court by Mr. Zigan and the State Engineer. Unless Judge Behrman~s ruling is changed, the mining plan will not require additional augmentation. Moisture loss from gravel hauled average 3 1/2% moisture content. ton. The operation will produce year for sn average of 9.82 afy. from the property is based on an This translates to 6.4 gallons/ approximately 500,000 tons per The concrete batching operation is based on an operation that moves 120 loads per day or 600 loads per week on the average. A concrete truck uses 240 gallons of water per load. This calculates a yearly average consumptive use of 22.98 afy. Dust control will be provided for the haul concrete batch plant. No dust control is mining area due to the use of conveyors material. Approximately 2,400 linear fee watered for dust control. It is estimated afy would be required to maintain the haul the year. roads leading to the needed for the actual Por transporting the t of haul road will be that a total of 1.95 roads for 6 months of ' A total of 26.85 afy would be used consumptively by these three operations. The water rights that are owned by the Ready Mixed Concrete Company have a historic consumptive use ranging between 200 afy to 239 afy for agricultural irrigation. Since these wells have historically used this much water under the administration of the State engineers Office, it is assumed that there are adequate supplies for the proposed mining operation. ' Floodolain Impacts The ma,7or portion of the proposed mining operation lies within t the floodway of the Bouth Platte River. The mining plan has bean designed such that no impact will be felt by adJoining property owners. Oravel mining operations in general are beneficial to a ' river floodway. The creation of the lakes actually increase the amount of temporary storage available for mayor floods. G-4