2018-08-01_HYDROLOGY - M2008017

• Permit No: M2008017
• IBM Index Class Name: HYDROLOGY
• Doc Date: 8/1/2018
• Doc Name: Substitute Water Supply Plan
• From: DWR
• To: DRMS
• Email Name: ECS
• Email Name: MAC
• Media Type: D
• Archive: No

Derr Pit SWSP August 1, 2018
Plan ID 5240 Page 5 of 6
for each well operating under this SWSP. NOTE: Monthly accounting, even during the winter
non-irrigation season, is required.
12. The Applicant shall verify that the entity making replacements (City of Greeley) has included
the Applicant on their accounting and submitted their accounting to the division office and
the water commissioner.
13. Applicant shall follow the attached Augmentation Plan Accounting Protocol for the operation
of this SWSP.
14. Conveyance loss for delivery of augmentation water is subject to assessment and modification
as determined by the division engineer.
15. The division engineer, or his designated representative, will administer all such water
transported in the South Platte River or its tributaries under this SWSP, including water for
replacement of depletions, past intervening headgates to ensure that such water is not
intercepted or otherwise diminished in quantity by diversion, use or other interference by
intervening water rights and to assure that such water remains available and suitable for
Applicant's uses under this SWSP, except when any intervening headgate is diverting the
entire flow of ("sweeping") the river. In the event that delivery past headgates which sweep
the river requires the installation of a bypass structure or the use of an existing bypass
structure by agreement with a third-party, Applicant is responsible for either installing a new
bypass structure with a continuous recording measuring device(s) as approved by the water
commissioner or securing an agreement with a third-party to use an existing bypass structure
and providing such information and agreement to the division engineer.
16. 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.
17. Dewatering at this site will produce delayed depletions to the stream system. As long as the
site is continuously dewatered, the water returned to the stream system should be adequate
to offset the depletions, thus dewatering is required to continue during the term of this plan.
Once dewatering at the sites cease, the delayed depletions must be addressed, including
depletions resulting from the gradual refilling of the pit. At least three years prior to
completion of dewatering, a plan must be submitted that specifies how the post pumping
dewatering depletions will be replaced, in time, place and amount.
18. If dewatering of the site is discontinued, the pit would fill creating additional depletions to
the stream system due to increased evaporation. To assure that additional depletions to the
river do not occur, a bond for $215,400 through the DRMS for lining or backfilling of the
exposed ground water has been obtained. Therefore, if the dewatering is discontinued the
bond can finance the completion of the lining of the pit or the backfilling, thus preventing
depletions to the stream system.
19. The approval of this SWSP does not relieve the Applicant and/or 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 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.