2004-07-08_REVISION - M2000158

• Permit No: M2000158
• IBM Index Class Name: Revision
• Doc Date: 7/8/2004
• Doc Name: Adequacy Review
• From: DMG
• To: Platte Sand & Gravel LLC
• Type & Sequence: AM1
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
7313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FA:K: [phone]
July 8, 2004
Rocky Hoffschneider
Platte Sand & Gravel LLC
P.O. BOX 180
Littleton, CO 80106
./
;[tE: Platte Sand & Gravel LLC, File No. M-2000-158
S & H Mine 112 Amendment Application~l (AM-Ol)- Adequacy Review
Dear Mr. Hoffschneider,
COLORADO
DIVISION O F
MIN&RALS
GEOLOGY
0.ECtAN ATIO N. MINING
SAfETY•SCIENCE
Bill Owens
Governor
Russell George
Executive Director
Ronald W. Cottony
Division Director
NaCUral Resource Trustre
I fisted below are adequacy review comments for the S & H Mine Amendment 112 Permit Application
(AM-O1), File No. M-2000-158. The amendment changes the mining method from wet to dry Honing
with the installation of a slurry wall around Longhorn and Sharkey lake azeas. The Division of Minerals
and Geology ("Division") is required to make an apgroval or denial decision no later than August 23,
2004, therefore, your response to the following adequacy review concerns should be submitted to the
Division as soon as possible. -
1. As required by Rule 1.6.5 (2), please submit the proof of publication of the public notice circulated
in the local newspaper and all owners of record of surface lands, and easement holders that are on
the affected land and within 200 feet of the boundary of the affected land. Proof of notice may be
return receipts of a Certified Mailing or by proof of personal service.
Rule 6.4.3 Exhibit C- Pre-Mining and Mining Plan Map(s) of Affected Lands
2. Exhibit C-1 was revised to depict the lakes that will be lined with a slurry wall to prevent the
migration of groundwater into Longhorn Lake and Sharkey's Lake. It was difficult to determine the
location of the slurry wall in relation to the gas(oil lines that surround the pits(lakes. Please revise
the map to clearly depict the location of the slurry wall in relation to the gasloil lines and wells.
Rule 6.4.4 Exhibit D-Mine Flan
On Page 3 of the application, the applicant states that remaining lake azeas may change, and a
Technical Revision will be filed once Platte Sand and Gravel knows what changes will need to
upgrade the groundwater impacts and lake configurations for the rest of the mine area. Lakes that
are lined either by slurry wall or compacted clay liners for the purpose of storing water does change
the .end land use to developed water resources. Please be aware -that lining any-of-the remaining
lakes via a slurry wall or compacted clay liner may need to be addressed as a future amendment to
Office of Office of Colorado
Mined Land Reclamation Active and Inactive Mines Geological Survey