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PUBLIC WORKS DEPARTMENT
1111 H STREET, P.O. BOX 758
GREELEY, COLORADO 80632 WEBSITE: .WELD.CO.US
PHONE: (970)35FAX:(970) 304-6497
COLORADO
September 8, 2010
Colorado Division of Reclamation, Mining, & Safety
Attention: Jared Ebert
1313 Sherman Street, Room 215
Denver, CO 80203
Re: Lafarge West, Stromquist Pit, Permit No. M-1983-031
Dear Mr. Ebert,
Weld County Public Works has recently become aware of a pending reclamation release request from
Lafarge West for its Stromquist Pit located in or about section 20, T2N, R68W. The mining activity has
impacted the way in which the FEMA mapped floodplain functions.
FEMA requires that changes such as water surface elevations,floodplain boundaries, and floodway
boundaries be documented and accepted through the Letter of Map Revision process (LOMR). The
Federal Regulations that apply include but are not limited to the following and can be found in: 44CFR
60.3(b)(3), 60.3(b)(7), and 65.3.DRMS should be aware that FEMA, the State of Colorado Water
Conservation Board, and Weld County have floodplain regulations which potentially impact how the site
can be used after reclamation. The above mentioned agencies also have regulations in place regarding
the erosional stability of the fill that may be left in the Boulder Creek Floodplain at the completion of
mining.
In order to ensure that Weld County citizens are not adversely impacted by a total or partial mine release,
Weld County respectfully DRMS not to release any portion of the mine site until such time as FEMA has
approved a LOMR which documents the impacts that the mine has had on the floodplain and the citizens
of Weld County.
Sincerely,
Clay Kimmi, P.E., CFM
Drainage and Floodplain Engineer
Weld County Public Works
Original: Jared Ebert,DRMS
PC: USR-536
CC: Kim Ogle,Planning Services
2010-2121
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M:\PLANNING-DEVELOPMENT REVIEW\USR-Use by Special Review\USR-536 Stromquist Pit\USR-536 DRMS Letter 9-3-10.docx
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