HYDRO21277

• Permit No: M2002020
• IBM Index Class Name: Hydrology
• Doc Date: 9/30/2002
• Doc Name: Substitute Water Supply Plan
• From: SEO
• To: DMG
• Media Type: D
• Archive: No

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STATE F~ ~ ~~~
O COL~RADO
OFFICE OF THE STATE ENGINEER
Division of Wa[er Resources
Department of Natural Resources
1313 Sherman Street, Room 818
Denver, Colorado 80203
Phone [phone]
FAx [phone]
www.watecstate.co.us
September 30, 2002
Mr. Richard T. Raines C ~ ~~ G~I~
Applegate Group, Inc, 02,~ ~ .S I~
1499 West 120 Avenue, Suite 200
Denver, CO 80234-2728 /
Re: Substitute Water Supply Plan, 25th Avenue Pit (M-02-020)
Section 36, Township 6 North, Range 66 West, 6th P.M.
Water Division 1, Water District 3, Weld County
Dear Mr. Raines:
OF'~~[O
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Biil Owens
Governor
Greg E. Walther
Ezecutive Director
Hal D. Simpson, P.E.
Stale Engineer
This letter is in response to your application for a substitute water supply plan for the 25th
Avenue Pit in accordance with Section §37-80-120, C.R.S. The required fee of $1,343 for the
substitute water supply plan has been submitted.
The 25th Avenue Pit was previously a part of the Greeley West Pit (M-77-081). The City of
Greeley has purchased the two groundwater ponds on this site and plans to line the ponds with a
slurry wall and use the ponds for storage. The two ponds included in this new plan will be operated
under a new DMG number (M-02-020).
The anticipated net depletion for this plan is 32.0 acre-feet per year from construction water
losses associated with construction of the slurry wall. The water surface exposed during mining will
have an evaporative replacement requirement of 173.8 acre-feet based on an exposed water
surface of 59.5 acres. You have provided a monthly breakdown of the annual depletions totaling
205.8 acre-feet.
Replacementwaterwill be provided by the City of Greeley using wholly consumable effluent
from the City's wastewater treatment plant resulting from use of the City's Windy Gap Shares. A
copy of the letter of-commitment for 205.8 acre-feet #om the-city ef~ireeley dated-May 15; 2-002
has been received. According to the information submitted, no water surface acreage was exposed
within mining boundary prior to January 1, 1981. No phreatophyte credit has been applied to this
plan.
As required by Senate Bill 89-120 in Section 8, this substitute water supply plan has been
provided to an outside consultant for review. The consultant has recommended approval of the plan
by way of this letter. Based upon statutory requirements and the recommendations of the
consultant, I hereby approve the proposed substitute water supply plan in accordance with §37-80-
120, C.R.S., subject to the following conditions:
t. If written objections to the following conditions are not received by this office and the