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GSL Sand St Gravel Substitute Water Supply Plan Page 4 of 5 December 19, 2022 Division of Water Resources website on the "Services" —> "Data St Information" page under the heading of Online Data Submittal. Accounting and reporting procedures are subject to approval and modification by the Division Engineer. Accounting forms need to identify the WDID number for each structure operating under this SWSP. Additional information regarding accounting requirements can be found in the attached Augmentation Plan Accounting Protocol. NOTE: Monthly accounting, even during the winter non-irrigation season, is required. In addition, the Applicant shall verify that the entity making replacements is identifying the Applicant's use specifically on the entity's accounting submitted to this office, and shall claim credit only for actual amounts released as shown in the entity's accounting. For the period of this plan, that entity is the City of Aurora (WDID 0802593 - Aurora Reuse). 10. 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. 11. Applicant must follow the Augmentation Plan Accounting or any other applicable protocols as referenced in the attached documents, for the operation of this SWSP. 12. In order to prevent injury to other water rights, the Division Engineer and Water Commissioner must be able to administer Applicants' replacement water past headgates on the river at times when those headgates would otherwise be legally entitled to divert all available flow in or "sweep" the South Platte or its tributaries. Applicant shall not receive credit for replacement of depletions to the South Platte below such diversion structures unless bypass and measurement structures are in place to allow the Division Engineer and Water Commissioner to confirm that Applicant's replacement water is delivered past the headgates. In the event that delivery past dry-up points requires the use of a structure for which a carriage or use agreement with a third party is required, Applicant shall be responsible for securing such agreement. Until such time as the Applicant provides a copy of the carriage or use agreement to the division engineer and water commissioner, no credit will be allowed for replacement of depletions to the South Platte below such diversion structure. 13. The Division of Water Resources will not be responsible for any enforcement or administration of third party agreements that are not included in a decree of the water court. 14. 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, or lagged depletions only if a lined pond results after reclamation, until there is no longer an effect on stream flow. 15. The Applicant is required to maintain their DRMS permit and an adequate bond to cover their reclamation plan until (1) there are no longer lagged depletions hitting the river, (2) a suitable augmentation plan is obtained, or (3) another party assumes full augmentation responsibilities. The Applicant has a current bond of $368,590 to account for backfilling the pit. With all future SWSP renewal requests, the Applicant will be required to demonstrate continuing compliance, or diligent pursuit of compliance, with their DRMS permit reclamation plan and the April 30, 2010 DRMS letter, specifically in regard to the required financial warranty for the site.