2015-09-22_HYDROLOGY - M1986079

• Permit No: M1986079
• IBM Index Class Name: HYDROLOGY
• Doc Date: 9/22/2015
• Doc Name: Sub Water Supply Plan
• From: DWP
• To: DRMS
• Email Name: TOD
• Media Type: D
• Archive: No

Rick Parsons
MEtG SWSP
September 17, 2015
Deliveries limitation to the Polly Mann Pit for recharge
Page 5 of 8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Total
0.0
0.0
0.0
4.5
17.5
27.6
34.6
29.8
19.8
9.3
0.0
0.0
143.3
The water delivered to the pit will be multiplied by the CU factors above to determine
the CU portion and the surface return portion. The CU portion will be lagged to the river and
credited as replacement for lagged evaporation depletions and the calculated wintertime return
flow obligations. The surface return portion will exit the northwest corner of the pit through a
corrugated metal pipe under 120th Ave and will reach the east bank of the South Platte River on
the north side of 120th Avenue. Winter time return flows will be calculated based on the total
amount recharged during the previous irrigation season. The recharge operation will require a
measurement structure capable of measuring and recording the farm headgate deliveries into
the pit, and a measurement structure capable of measuring and recording the surface return
portion that is returned to the river. The surface return measurement structure must not also
intercept storm water runoff. No credit will be given to water delivered to the pit or returned
back to the river that is not measured to the satisfaction of the water commissioner. According
to the information received from the Applicant, on April 2, 2014 the required water
measurement device was installed thus the measurement structure is capable of measuring and
recording the surface return portion that is returned to the river. However the water
commissioner has to also approve this structure before credit can be given to water delivered to
the pit or returned back to the river. According to the information provided by the water
commissioner the required measuring device for the recharge _o ep ration identified in the
SWSP has not been approved. However the Applicant was claiming deliveries for recharge
in the accounting for the months of May, June and July 2015. Since deliveries for
recharge was not allowed as the proper measuring device was not in place, the Applicant
is hereby notified that this SWSP will not be renewed for the MFtG site which would result in
Cease and Desist Orders against the mine site unless the required measuring device for
the recharge operation has been approved by the water commissioner.
Non -irrigation uses are limited in agreement with other Fulton Ditch historic consumptive
use analyses, current ditch operations, and expected yields during a dry year. It is possible the
ditch will be limited to its 1865 right of 79.7 cfs during parts of the season. This would result in
deliveries to each of the three ditch sections for 2 days on and 4 days off with 1 cfs delivered to
each 38.4 shares owned (1 miner's inch per share) for about 10 days per month. This translates
to approximately 1.59 cfs for all 61 shares.
The SEO has accepted the HCU analysis based on the previous factor from change case
no. OOCW202. However the Applicant is hereby notified that this is the last year this
analysis is accepted. Any future SWSP requests must provide additional information about
the use of the Fulton Ditch shares on the Polly Mann and Tower farms, including years of
use and justification of use of the subject 50 Polly Mann shares after the end of the chosen
study period and a NEW historical use analysis.
Long Term Augmentation Requirements
In accordance with the letter dated April 30, 2010 (attached) from the Colorado Division
of Reclamation, Mining, and Safety ("DRMS"), all sand and gravel mining operators must comply