2003-04-07_REVISION - M1974069

• Permit No: M1974069
• IBM Index Class Name: Revision
• Doc Date: 4/7/2003
• Doc Name: Adequacy Response
• From: Landmanrk Engineering Ltd.
• To: DMG
• Type & Sequence: AM1
• Media Type: D
• Archive: No

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MAR - ~ Zoo3 STATE OF COLORADO
OFFICE OF THE STATE ENGINEER
Division of Water Resources ~---------^--°
Department of Na[ural Resources
1313 Sherman Stree4 Room 818
Denver, Colorado 80203
Phone [phone]
FN( [phone] February 24, 2003
www.watecstate.co.us
Ms. Jennifer S. Lindahl, P.E.
Bishop-Brogden Associates, Inc.
333 West Hampden Avenue, Suite 1050
Englewood, Co 80110
RE: Substitute Water Supply Plan, Lorimer Pit, DMG #74-069
Sections 15, 16 and 17, TSN, R69W, 6th P.M.
Water Division 1, Water District 4, Lorimer County
Dear Ms. Lindahl:
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Bill Owens
Governor
Creg E. Walther
&ecu[ive Director
Hal D. Simpson, P.E.
State Engineer
Your letter dated January 27, 2003, requesting renewal of the above referenced substitute water
supply plan to cover depletions caused by an existing gravel mining operation has been reviewed. The
required fee of $217 for the renewal of this substitute water supply plan has been submitted. The original plan
was approved on July 27, 1998 and it was most recently renewed on April 18, 2000. An augmentation plan for
the site was filed with the Division 1 W ater Court in Case No. 2000CW 142.
The anticipated net depletion for this plan is 43.88 acre-feet per year for a total of 22.89 acres of water
surface exposed after December 31, 1980. According to the information submitted, 82.47 acres of water
surface, out of a total of 128.85 to be exposed at the site, was exposed within the reclamation permit boundary
prior to January 1, 1981. You have provided a monthly breakdown of the depletions for this year of operations
from March of 2003 through February of 2004. The depletions total 23.88 acre-feet of net evaporative loss,
14.09 acre-feet of water used to batch concrete (which represents production of 153,120 cubic yards of
concrete), 0.48 acre-feet of water lost with mined product (which represents 16,488 tons of mined product),
and 5.40 acre-feet of water used for dust control. Phreatophyte credits of 5.29 acre-feet per year have been
applied to this plan.
The proposed sources of replacement water for this pit are 27.6 Barnes Ditch inches diverted from the
Big Thompson River and previously used for irrigation of the mined property and 93.62 units of Colorado-Big
Thompson Project water owned by Loveland Ready Mix. The Barnes Ditch inches, from dry-up of
approximately 42.2 acres of alfalfa and barley, provide a dry year total of 45.38 acre-feet of historic net stream
depletions during May through October, and carry an historic return Flow obligation of 1.48 acre-feet during
November through April. The acreage dried-up will need to be verified by the Division Engineer prior to any
renewal of this plan. Replacements during May through October will be made by diverting the Barnes Ditch
water, measuring it, and then returning it to the Big Thompson River. Adequate flow measuring devices,
satisfactory to the Water Commissioner, must be installed for the administration of this replacement water
from the Barnes Ditch. Replacement for depletions during November through April, plus shortages after
Barnes credits during July through October, will be met by releases of C-BT water owned by Loveland Ready
Mix. At a quota of 0.3 acre-feet per unit, the 93.62 units committed to this plan will provide up to 28.09 acre-
feet of replacement credit. The C-BT units are approved for use in this temporary substitute water supply
plan. However, they cannot be used as a replacement source in a permanent plan for augmentation for this
site.
I hereby approve the proposed substitute water supply plan in accordance with §37-80-120, C.R.S.
subject to the following conditions: