2014-12-10_REVISION - M1974086

• Permit No: M1974086
• IBM Index Class Name: Revision
• Doc Date: 12/10/2014
• Doc Name: Response
• From: DWR
• To: DRMS
• Type & Sequence: AM3
• Email Name: MAC
• Media Type: D
• Archive: No

AVCOLORADO
Division of Water Resources +�
Department of Natural Resources
1313 Sherman Street, Room 821
Denver, CO 80203
Response to Reclamation Permit Amendment Application Consideration
DATE: December 10, 2014
TO: Michael A. Cunningham, Environmental Protection Specialist RECEIVED
CC: Division 1 Office, District 7 Water Commissioner k1l
DEC 10 2014
FROM: loana Comaniciu, P.E.
DIVISION OF RECLAMATION
RE: Ralston Quarry, File No. M-1974-086 MINING AND SAFETY
Operator: Asphalt Paving Company
Contact: M. L. Richardson, [phone]
Sections 4, 5 and 8, Twp 3 South, Rng 70 West, 6th P.M., Jefferson County
CONDITIONS FOR APPROVAL
® The proposed mining operation does not anticipate exposing groundwater. Therefore, exposure of
ground water must not occur during or after mining operations.
® The proposed operation may have potential impact on existing water rights near the project
location. The proposed project shall not alter or impact the historic operation of existing water
rights.
® The applicant has indicated plans to use water for the following purposes at the permit site:
dust control, ® crushing and screen plant ® asphalt plant
The source of the water for the above uses will be from the Upper Long Lake Reservoir via a
purchase agreement.
COMMENTS: The application seeks an amendment to change the post mine land use of the site to a water
storage reservoir. The amended permit boundary will encompass 271.6 acres.
The primary commodity to be mined at the site is basalt for construction material. The site is proposed
to be reclaimed to a water storage reservoir and rangeland.
The Denver Water Tunnel located underneath of the permit area carries water from a ditch to the Upper
Long Lake Reservoir located east of the permit area. The proposed mining operation is not expected to
directly affect the Denver Water Tunnel.
If stormwater runoff is intercepted by this mining operation and is not diverted or captured in priority, it
must be released to the stream system within 72 hours, which may require a discharge permit from
CDPHE-WQCD. Otherwise, the operator will need to make replacements for evaporation.
The applicant may contact the State Engineer's Office with any questions.
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1313 Sherman Street, Room 821, Denver,CO 80203 P 303.866.3581 F 303.866.3585 www.water.state.co.us I
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