HYDRO28622

• Permit No: M1979205
• IBM Index Class Name: Hydrology
• Doc Date: 5/3/2005
• Doc Name: Substitute Water Supply Plan
• From: OSE
• To: Oldcastle SW Group Inc. dba United Companies of Mesa County
• Media Type: D
• Archive: No

NAY-03x05 11:05Aµ FROM-Cola Div of Ylater Resources

[phone]
STATE OF
T-6T0 P.002/012 f-251
~LO~o
OFFICE OF THE STATE ENGINEER
~Divhion of water Resources
Deparpnent of Natural Rewurtes
1313 Sherman Street, ROOM 819
Deriver, Colorado 80203
Phone [phone]
FAx [phone]
www.watersrete.m.us
May 3, 2005 ~
Mr. Brent Kerr
United Companies/
P2273 River Road; P.O. Box 3609
Grand Junction, Colorado 81502
Re: Scott Expansion of the Chaplbers Pit,
DMG File No. M-79-205 /
Section 15, T6S, R93W of the 6'" P.M.
Water Division 5, Water District 14
Dear Mr. Kerr.
~:
~ra'16~
em o..ero
Governor
Resell Gearlpe
EwcuUve Director
Mal D. Simpson, P.E
Sure Enµinaar
MAY 0 ~ 2005
Q~ JtOn fieir? tYris.~
~gdon of AAism rn.p ~ caa;.~av
Substitute Water Suppty Plan
This letter is in response to your application of June 15, 24D4 requesting a substitute water
supply plan (SW SP) for a sand and gravel pit to be operated by the applignt, United Companies,
In accordance wHh 37-90-137(11) C.R.S. The Applicant shall be responsible for compliance with
this plan, but the State Engineer's Office may also pursue the landowner, for eventual compliance.
The required fee of $1,343 for the substitute water supply plan has been paid.
The proposed plan anticipates a maximum year net depletion of 57.87 acre-feet for up
to 55.52 acres of exposed groundwater surface. Depletions from the mining of this proposed
operation will accxue to the Colorado River. Call records on the Colorado River show that out-
of-priority depletions generally occur only during the period form April 16 through October 31.
As a result, the maximum anticipated out-of-priority depletions associated with this operation far
the approved period is 12.90 acre-feet. Even though the operator of this aggregate mining
operation anticipates dry mining of the Scott Expansion of the Chambers Pit by dewatering, the
proposed plan accounts for evaporative depletions as if the excavation were not dewate2d.
Because this is a new mining operation, no groundwater was exposed within the permit
boundary prior to January 1, 1981.
You have provided a monthly breakdown of the maximum annual depletions totaling
208.29 acre feet of evaporative loss from a maximum of 55.52 acres of exposed groundwater,
1.86 acre feet of water used and consumed for dust control, and 7.11 acre-feet of water Lost
with the mined product. A phreatophyte credit of 159.39 acre-feat has been applied to this plan
based on the 17.64 aces of high-density growth willows and cottonwood trees and 23.8fi acres
of medium-density growth willows and cottonwood trees that presently occupy this site.
Because the exposed groundwater associated with this mining operation is to be located less than
100 feet from the Colorado River, all depletions to the river system are assumed to be
instantaneous.