2012-11-07_HYDROLOGY - M1997054 - Laserfiche WebLink

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Stephen Buechner, Applegate Group Page 4 November 7, 2012 3.0 acres, additional replacement water must be made available to replace the losses. 4. The annual amount of water used at the operation shall not exceed 9.0 acre -feet for dust control and the total product mined shall not exceed 400,000 tons per year above the groundwater surface resulting in 9.37 acre -feet of water lost with the product. 5. Total consumption at the Parkdale Project site must not exceed the aforementioned amounts unless an amendment is made to this plan. 6. Approval of this plan is for the purposes as stated herein. Any additional uses of this water must first be approved by this office. 7. All pumping for product washing and dust control shall be measured in compliance with the Amended Rules Governing the Measurement of Tributary Ground Water Diversions Located in the Arkansas River Basin. 8. Accounting of water in this plan, including pumping, stream depletions, and replacement water deliveries must be provided to the Water Commissioner (Brian.Sutton @state.co.us) and Division Engineer (Div2Ground.Water @state.co.us) on forms and at times acceptable to them. Said accounting must be received by the 10 of the month following the month being reported. The name, mailing address, and phone number of the contact person who is responsible for operation and accounting of this plan must be provided on the accounting forms. 9. The approval of this substitute water supply plan does not relieve the Applicant and /or the landowner of the requirement to obtain a Water Court decree approving a permanent plan for augmentation or mitigation to ensure the permanent replacement of all depletions, including long -term evaporation losses and lagged depletions after gravel mining operations have ceased. If reclamation of the mine site will produce a permanent water surface exposing groundwater to evaporation, an application for a plan for augmentation must be filed with the Division 2 Water Court at least three (3) years prior to the completion of mining, to include, but not be limited to, long -term evaporation losses and lagged depletions. If a lined pond results after reclamation, replacement of lagged depletions from mining and dewatering shall continue until there is no longer an effect on stream flow. 10. Dewatering at this site will produce delayed depletions to the stream system. As long as the pit is continuously dewatered, the water returned to the stream system should be adequate to offset the depletions. However, once dewatering at the site ceases the delayed depletions must be addressed. At least three years prior to completion of dewatering at the Parkdale Pit a plan must be submitted that specifies how the post pumping dewatering depletions (including refilling of the pit) will be replaced, in time, place and amount. 11. In accordance with the letter dated April 30, 2010 (copy attached) from the Colorado Division of Reclamation, Mining, and Safety ( "DRMS "), all sand and gravel mining operators must comply with the requirements of the Colorado