2006-07-12_REVISION - M1977439

• Permit No: M1977439
• IBM Index Class Name: Revision
• Doc Date: 7/12/2006
• Doc Name: Response to Reclamation Permit Application Consideration
• From: OSE
• To: DMG
• Type & Sequence: AM3
• Media Type: D
• Archive: No

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STATE OF COLORADO
OFFICE OF THE STATE ENGINEER
Division of Water Resources
Department of Natural Resources
1313 Sherman SVeet, Room 818
Denver, Colorado 80203
Phone [phone]
FAx [phone]
wwwwatecstate.co.us
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Response to Reclamation Permit Application Consideration
July 12, 2006
Richard M. Wenzel, Environmental Protection Specialist
Division 1 Office, District 3 Water Commissioner
FROM: loana Comaniciu, E.I.T.
RE: Home Office Mine, File No. M-1977-439
Operator: Lafarge West, Inc.
Contact: Eric Reckentine-970-407-3620 or Noel Weisenbacher-303-657-4000
Section 33, Twp 8 North, Rng 69 West, 6th P.M., Lorimer County
CONDITIONS FOR APPROVAL
Bill Owens
Governor
Russell George
Executive DireROr
Hal D. Simpson, P.E.
State Engineer
^ The proposed operation does not anticipate exposing groundwater. Therefore, exposure of ground
water must not occur during or after mining operations.
® The proposed operation will consume ground water by: ®evaporation, ®dust control, ®reclamation,
® water removed in the mined product, ®processing.
Lafarge is seeking to amend its existing 112 permit to reflect the addition of 0.38 acres to the mining
plan. Also Lafarge has indicated that the reclamation plan is being revised to allow for approximately
11.18 acres silt storage on the western edge of the Home Office Pits. This would reduce the original
open water (in area F) from approximately 34.4 acres to 23.22 acres.
® A well permit was obtained for the current use and exposed pond surface area of the gravel pit, permit
no. 42997-F in accordance with Section 37-90-137(2) and (11), C.R.S. A substitute water supply plan for
the site was approved on December 2, 2004 and the plan is currently valid until October 31, 2006. No
new well permit is required, however the Applicant must continue to operate under an approved
substitute water supply plan or decreed plan for augmentation.
^ The proposed operation may have potential impact on existing water rights near the project location.
Applicant needs to demonstrate that the proposed project will not alter or impact the historic operation of
existing water rights.
^ The applicant has indicated plans to use other water for purposes at the permit site. The source
of water for this use is to be obtained from Applicant needs to document that this water was
diverted in priority under a water right decreed for such industrial use. Applicant should contact the
water commissioner for further information.
^ The applicant has not identified any proposed use of water at the permit site. If water will be used for
any purpose at this site, the applicant will need to document that the water was obtained from a legal
source, or the use of the water was decreed for such industrial use.
COMMENTS: If stormwater runoff is intercepted by this operation and is not diverted or captured in priority, it
must be released to fhe stream system within 72 hours. This may require a discharge permit from CDPHE-
WOCD. Otherwise, the operator will need to make replacements for evaporation.
The applicant may contact the State Engineer's Office with any questions.