2013-01-15_HYDROLOGY - M2010071 - Laserfiche WebLink

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Mr. Wayland Goose Haven #2 Expansion SWSP January 9, 2013 Page 4 of 5 8. All releases of replacement water must be sufficient to cover all out -of- priority depletions in time, place, and amount and must be made under the direction and /or the approval of the water commissioner. The release of replacement water may be aggregated to maximize beneficial use. The water commissioner and /or the division engineer shall determine the rate and timing of an aggregated release. 9. As long as dewatering remains continuous, the net accretions should be sufficient to replace the lagged depletions. At least three years prior to the planned cessation of dewatering, the operator must submit a dewatering analysis that shows how post pumping depletions will be replaced. As this analysis requires knowledge of the total volume dewatered, all dewatering activities must be metered with a totalizing flow meter that is recorded and reported on the submitted monthly accounting. 10. 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. In addition, 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 (Div1Accounting @state.co.us) and the water commissioner (Bob Carlson at Bob.Carlsonstate.co.us) on a monthly basis. The accounting must be submitted within 30 calendar days of the end of the month for which the accounting is being made and conform to the Administration Protocol "Augmentation Plan Accounting, Division One — South Platte River" (attached). In addition, the applicant shall verify that the City of Lafayette (WDID 0602503) includes in their monthly accounting, a report on the reusable water released to provide replacement for this SWSP. It is the Applicants responsibility to ensure Lafayette releases the leased water in the correct time, place, and amount. 11. The name, address, and phone number of a contact person who will be responsible for the operation and accounting of this plan must be provided on the accounting forms to the division engineer and water commissioner. 12. Conveyance loss for delivery of augmentation water is subject to assessment and modification as determined by the division engineer or water commissioner. 13. 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 1 Water Court 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. 14.1n 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 Reclamation Act and the Mineral Rules and Regulations for the protection of water resources. As the DRMS permit holder and land owner is the City of Lafayette, a bond to cover the cost of backfilling or lining the pit is not required as Lafayette is a governmental agency. As the