HomeMy WebLinkAbout20101190.tiff r.a ,, . �
fr PUBLIC WORKS DEPARTMENT
faitim
1111 H STREET, P.O. BOX 758
GREELEY, COLORADO 80632 WEBSITE: .CO.US
W I l p CPHONE: (97 356-4000,FAX: (970)304-6 97
COLORADO
Weld County Planning Department
May 21, 2010 GREELEY OFFICE
Colorado Division of Reclamation, Mining, & Safety
Attention: Jared Ebert MAY 24 7nln
1313 Sherman Street, Room 215 RECEIVED
Denver, CO CO 80 80203
Re: Lafarge West, Hamm Pit, Permit No. M-1987-176
Dear Mr. Ebert,
Weld County Public Works received your notice for the partial acreage release of the Hamm Pit on May
18, 2010. The mining activity has impacted the way in which the FEMA mapped floodplain (St. Vrain
Creek) functions. FEMA's floodplain regulations (44CFR 60 and 65) require that changes such as water
surface elevations, floodplain boundaries, and floodway boundaries be documented and accepted
through the Letter of Map Revision process (LOMR). To date, Weld County has not been informed of any
pending LOMR for the Hamm Pit.
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. Pending
CWCB regulations will make it so that all state agencies will have to comply with the Federal, State, and
Local floodplain regulations. These agencies also have regulations in place regarding the erosional
stability of the fill that may be left in the St. Vrain Creek Floodplain at the completion of mining.
In order to ensure that citizens in unincorporated Weld County are not adversely impacted the changes
that have occurred in the floodplain due to the mining process, Weld County respectfully requests that
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 mining activity has had on the floodplain and unincorporated Weld
County citizens.
Sincerely,
711 74
Clay Kimmi, P.E., CFM
Drainage and Floodplain Engineer '
Weld County Public Works
Original: Jared Ebert,DRMS
PC:: 1!.SR-f 199,1lanun Pit Crl
CC: Lafarge ANeel,10170 Church Ranch [Puy Sic. 2110, IFecrminster CD 80021
Gim Ogle.Planning Services tr
JC
ealttiuuu,cohw,q (0-7—a o 7 O 2010-1190
Page 1 of 1
M:\PLANNING-DEVELOPMENT REVIEW\USR-Use by Special Review\USR-1199 Hamm Pit\USR-1199 DRMS Letter 5-21-10.clocx PI- lad I
Hello