2009-12-14_HYDROLOGY - M2001107 - Laserfiche WebLink

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Michelle L. Hatcher December 14, 2009 Page 3 5. Approval of this plan is for the purposes as stated herein. Any additional uses of this water must first be approved by this office. 6. The applicant shall maintain daily records of all diversions, replacements, and the amount of water used for each particular purpose. The applicant shall provide a report of these records to the division engineer and the water commissioners on a monthly basis on a form approved by them. The accounting must be submitted within thirty (30) calendar days of the end of the month for which the accounting is being made. In addition, the applicant shall submit a report from the City of Thornton. The reports shall include an accounting of all replacement water controlled by Thornton, showing the total volume of water under their control and the amount committed to each of the recipients of the water. 7. All diversions shall be measured in a manner acceptable to the division engineer. The Applicant shall install and maintain such measuring devices as required by the division engineer for operation of this SWSP. 8. All releases of replacement water must be sufficient to cover all out of priority depletions and be made under the direction and /or approval of the water commissioner. The replacement may be aggregated to maximize beneficial use. The water commissioner and /or division engineer shall determine the rate and timing of an aggregated release. 9. The name, mailing address, and phone number of the contact person who will be responsible for operation and accounting of this plan must be provided on the accounting forms to the division engineer and water commissioner. 10. The approval of this substitute water supply plan does not relieve the Applicant and /or landowner of #Fie 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 1 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 shall continue until there is no longer an effect on stream flow. 11. This substitute water supply plan may be revoked or modified at any time should it be determined that injury to other water rights has or will occur as a result of this plan. Should this substitute water supply plan expire without renewal or be revoked prior to adjudication of a permanent plan for augmentation, all excavation of product from below the water table, and all other use of water at the pit, must cease immediately. 12. 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 attributable to the dewatering operation. If dewatering at the site ceases, the delayed depletions must be addressed. At least three years prior to completion of dewatering, 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.