2015-08-06_HYDROLOGY - M1996049

• Permit No: M1996049
• IBM Index Class Name: HYDROLOGY
• Doc Date: 8/6/2015
• Doc Name: Substitute Water Supply Plan
• From: Resource Engineering
• To: DRMS
• Email Name: ECS
• Media Type: D
• Archive: No

from the East Section line. Water is diverted from this well for the following uses associated
with Everist's aggregate mining operation at MCR: vehicle washing, landscape irrigation, and
domestic. The well is permitted for average annual diversions of 8.5 acre-feet at a pumping
rate of 250 gallons per minute (gpm). Long-term depletions for these uses are estimated at
3.0 acre-feet per year.
E. Groundwater well Permit No. 515944, located in the SWI/4 SE1/4 of Section 15, T. 4S,
R. 78W of the 6th P.M., approximately 175 feet from the South Section line and 2,375 feet
from the East Section line. Water is diverted from this well for the following uses associated
with Everist's aggregate mining operation at MCR: concrete batching, concrete truck
washing, and domestic. The well is permitted for average annual diversions of 8.5 acre-feet
at a pumping rate of 500 gallons per minute (gpm). Long-term depletions for these uses are
estimated at 8.5 acre-feet per year.
F. Groundwater well Permit No. 51595-F, located in the NW1/4 NEI/4 of Section 22, T. 4S,
R. 78W of the 6th P.M., approximately 300 feet from the South Section line and 2,000 feet
from the East Section line. Water is diverted from this well for the following uses associated
with Everist's aggregate mining operation at MCR: dust control and asphalt production. The
well is permitted for average annual diversions of 3.5 acre-feet at a pumping rate of 300
gallons per minute (gpm). Long-term depletions for these uses are estimated at 1.3 acre-
feet per year.
Lone -term Depletions
Everist long-term operation plans (i.e. after gravel mining ceases) include production of CDOT
asphalt and concrete batching. Everist has estimated its maximum long-term production targets
for asphalt and concrete and calculated the associated consumptive use amounts. In addition,
Everist has estimated the evaporative losses corresponding to the unlined ponds that will
remain after completion of mining operations. The maximum long-term estimated depletions
that would result from the consumptive uses described above equal 73.3 acre-feet per year.
These long-term depletions would be offset utilizing the sources of replacement water outlined
below.
6. Water to be used for Ione -term Augmentation
A. Consumptive use credits from historic irrigation. A total of 138 acres of historically
irrigated fields have been effectively dried-up and permanently removed from irrigation as a
result of gravel mining operations in MCR. A map which depicts the MCR irrigation water rights
and the corresponding historically irrigated fields is attached as Exhibit A. The water rights
utilized for such historic irrigation are listed below:
I. Famine Creek Ditch, Administration Number 11840.00000, Case No. CA1277
ii. McKay Ditch, Administration Number 32075.28032, Case No. CA1805
iii. Old Whetstone/Sheep Creek Ditch, Administration Number 12235.00000, Case No.
CA1277
iv. South Rock Creek Ditch, Administration Number 31233.00000, Case No. CA1709.