2010-11-22_PERMIT FILE - M2009076 ‎(4)‎

• Permit No: M2009076
• IBM Index Class Name: PERMIT FILE
• Doc Date: 11/22/2010
• Doc Name: Review of Tr and Adequacy Response Ltr.; Adequacy Review#3
• From: DRMS
• To: Venture Resources, Inc.
• Email Name: JLE
• Email Name: AJW
• Email Name: PSH
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
November 22, 2010
Ryan McHale, PE
Venture Resources, Inc.
P.O. Box 1974
Idaho Springs, CO 80452
RE: Hukill Gulch Millsite; File No. M-2009-076
Review of Technical Revision and Adequacy Response Letter; Adequacy Review #3
Dear Mr. McHale,
COLORADO
D IV IS I ON OF
RECLAMATION
MINING
- Si-
SAFETY
Bill Ritter, Jr.
Governor
Mike King
Executive Director
Loretta E. Pineda
Director
The Division of Reclamation, Mining and Safety received your full response to the second adequacy
review on November 22, 2010. There are several issues that must be addressed prior to the Division's
approval of the application. The decision date for this application is November 24t", 2010. Please
address the following concerns:
1.) Page 5, Item #9g of the second adequacy review indicated Venture Resources is to notify the Division
in advance of tailings sample collections so the activity can be inspected. Please commit to notifying the
Division 10 days prior to tailings sample collections. If the Shelby tube samples are found to be un-
representative of undisturbed tailings, DRMS will require cone penetrometer or other direct testing be
done.
2.) The Division disagrees with Venture Resources response to item #9d in the response letter.
Imported material will likely not meet the definition of "Inert Material" as defined by Rule 1.1(24).
After processing, the tailings of this imported material should be inert and will be used as structural fill
to create the tailings impoundment. Some of the requirements of the structural fill notice described in
Rule 3.1.5 (9) are described in the mining plan; however, as stated in the Rule, the Division is not limited
to just those requirements specified. The Division will require a notice prior to importation of material
into the site indicating a general description of the material to be imported, location information and
DRMS permit number for the source of the material, the volume of material to be imported, the
approximate dates the importation will commence and end, however, such dates shall not be an
enforceable condition. The Division will process the notice(s) to be submitted in accordance with Rule
3.1.5(9).
3.) The revised Exhibit C submitted with the Technical Revision received by the Division on November
12, provides a sampling procedure to measure saturation levels using piezometer standpipes. This will
measure saturation of the tailings and the phreatic surface location. Proper dewatering of the tailings
and the location of the phreatic surface will have a substantial impact on the stability of the
impoundment. Venture Resources committed to conducting monitoring of these piezometers once
every quarter and plotting the results on a graphic map schematic of the tailings impoundment. Please
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