2012-03-30_HYDROLOGY - M1999050

• Permit No: M1999050
• IBM Index Class Name: HYDROLOGY
• Doc Date: 3/30/2012
• Doc Name: SWSP
• From: OSE
• To: Applegate Group, Inc.
• Permit Index Doc Type: Hydrology Report
• Email Name: MAC
• Media Type: D
• Archive: No

Depth to Ground
Water (Feet)
Percent Reduction in CU Credit'
Native Grass
Alfalfa
1
85%
100%
2
50%
90%
3
30%
75%
4
20%
50%
5
15%
35%
6
10%
20%
7
5%
15%
8
0%
10%
Mr. Jared Dains
Timnath - Connell SWSP
March 30, 2012
Page 5
1. Adapted from EVAPOTRANSPIRATION AND AGRONOMIC RESPONSES IN FORMERLY
IRRIGATED MOUNTAIN MEADOWS, South Park, Colorado, March 1, 1990; Revised
September 1, 1991
12. Adequate accounting of depletions and replacements must be provided to the division
engineer in Greeley (Div1Accountinqstate.co.us) and the water commissioner
(Georqe.Varrastate.co.us) on a monthly basis. All amounts shall be in acre -feet. All
submitted accounting shall conform to the Administration Protocol "Augmentation Plan
Accounting, Division One — South Platte Rivet" (attached).
13. The name, address, and phone number of the contact person who will be responsible for the
operation and accounting of this plan must be provided on the accounting forms submitted to
the division engineer and the water commissioner.
14. Monthly excess recharge credits are dedicated to the SerFer Pit as their primary replacement
water source. Submitted accounting must adequately show the monthly amount as a
depletion to the Timnath - Connell Pit. As the Applicant owns both the SerFer and Timnath-
Connell Pits, combined accounting is acceptable.
15. This substitute water supply plan may be revoked or modified at any time should it be
determined that injury to other vested water rights has or will occur as a result of this plan.
Should this supply plan expire without renewal or be revoked prior to adjudication of a
permanent plan for augmentation, all use of ground water must cease immediately.
16. If reclamation of the mine site produces 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 years prior to the completion of mining to include, but not be
limited to, long -term evaporation losses. If a lined pond results after reclamation,
replacement of lagged depletions shall continue until there is no longer an effect on stream
flow. Granting of this plan does not imply approval by this office of any such court
application(s).
17. The Timnath - Connell Pit has been continuously dewatered. Dewatering at this site creates
lagged accretions that mimic its lagged depletions. The Applicant intends to line the pit
when mining activity is complete thereby eliminating the depletion caused by the first fill.
Therefore the Applicant proposes that once dewatering at the site ceases, there will not be
any delayed depletions that must be addressed.
18. If dewatering of the Timnath - Connell Pit were discontinued prior to the completion of a
liner, the pit would fill creating additional depletions to the stream system and resulting in
increased evaporation. To assure that additional depletions to the river do not occur, a
bond for $510,198 for the Timnath - Connell Pit for lining or backfilling of the pit was