HYDRO20869

• Permit No: M2001085
• IBM Index Class Name: Hydrology
• Doc Date: 8/15/2007
• Doc Name: Substitute Water Supply Plan
• From: OSE
• To: Martin & Wood Water Consultants, Inc
• Media Type: D
• Archive: No

Ms. Michelle Cunico Johnson, Ms. Carrie Spritzer
August 14, 2007
Page 2
the Take as a result of discharging water to the Ski Lake.
Water for dust control and augmentation at the site will be
Laramie-Fox Hills aquifer water pumped from well no. 64401-F. 1
average annual withdrawal of 15.6 acre-feet per year and is perm
augmentation, dust control, residentia{ and domestic uses.
Depletions
The annual depletion resulting from evaporation from the 2
water is 5.7 acre-feet. Between this approval period (May 1, 2007 tl
the water lost in mined product will be 9.72 acre-feet from 330,000 t
SWSP request anticipates that the slurry wall will be approved prior
the slurry wall is approved the applicant is no longer required to repl
water lost in mined product, therefore the plan does not show any d
mined product after October 31, 2007.
sided by nontributary
veil is limited to an
for industrial, commercial,
ss of exposed ground
ugh October 31, 2007)
s of mined product. The
October 31, 2007. Once
a depletions resulting from
etions from water lost in
Depletions resulting from evaporation and water lost in produdt were lagged to the
stream system based on a Glover analysis and assuming a Stream Depletion Factor ("SDF") of
120 days. The lagged depletions are shown in attached Table 2. Those lagged depletions
account for depletions that result from previous operations at the site.
Replacements
The replacements sources for this plan are nontributary Lara ie-Fox Hills water
withdrawn by well no. 64401-F and 5.40 acre-feet of fully consumable~water leased from the City
of Brighton. This lease is necessary to cover an increased augmentation obligation that results
from the delay in lining the pit. You have provided a copy of the leasel(attached) and have
informed the water commissioner of the use of this water. The delivery of fully consumable
Fulton Ditch water will be made to the South Platte River from Brighto is Midland augmentation
station.
The nontributary Laramie-Fox Hills water will either be discharged into the Ski Lake and
recharged back to the river or discharged directly to the river via Brighton's 124th Avenue
Pipeline. If the water is discharged into the Ski Lake, the accretions will be lagged to the river
based on a SDF of 100 days.
The replacement schedule for January 2007 through July 20081is shown in the attached
Table 3.
Conditions of Approval
I hereby approve this substitute water supply plan, in accordanoe with Section 37-90-
137(11), C.R.S., subject to the following conditions: ~
This SWSP shah be valid for the period of May 1, 2007 througf? October 31, 2007, unless
otherwise revoked, modified, or superseded by decree. If the applicant provides evidence to
the State Engineer's office that the slurry wall has been approvetl, prior to August 31, 2007,
this plan shall be extended until July 31, 2008. If the pit is not lined and all lagged depletions
resulting from the mining operation have not been replaced by the plan's expiration date, a