2011-11-04_INSPECTION - M2004031

• Permit No: M2004031
• IBM Index Class Name: INSPECTION
• Doc Date: 11/4/2011
• Doc Name: Insp Rpt
• From: DRMS
• To: Aggregate Industries-WCR, Inc.
• Inspection Date: 10/5/2011
• Email Name: DB2
• Email Name: TAK
• Media Type: D
• Archive: No

MINE NAME:
Hazeltine Mine
MINE/PROSPECTING ID #:
M- 2004 -031
MINERAL:
SDG
COUNTY:
Adams
INSPECTION TYPE:
Monitoring
INSPECTOR(S):
David Bird, Tom Kaldenbach
INSP. DATE:
05 Oct 2011
INSP. TIME:
14:00
OPERATOR:
Aggregate Industries — WCR, Inc.
OPERATOR REPRESENTATIVE:
Connie Davis, Trey Poulson, Kip Raines,
Mike Refer, Rich Tocher (TetraTech)
TYPE OF OPERATION:
112(c)
REASON FOR INSPECTION:
Citizen Complaint
BOND CALCULATION TYPE:
NN
BOND AMOUNT:
$670,602
DATE OF COMPLAINT:
14 September 2011
POST INSP. CONTACTS:
None
JOINT INSP. AGENCY:
None
WEATHER:
Clear
INSP OJ ATURE:
SIGNATURE DATE:
November 4, 2011
��� c�`O COLORADO DIVISION OF RECLAMATION, MINING AND SAFETY
ti MINERALS PROGRAM INSPECTION REPORT
*
a sps �`
PHONE: [phone]
The Division of Reclamation, Mining and Safety has conducted an inspection of the mining operation
noted below. This report documents observations concerning compliance with the terms of the permit
and applicable rules and regulations of the Mined Land Reclamation Board.
The following inspection topics were identified as having Problems or Possible Violations. OPERATORS
SHOULD READ THE FOLLOWING PAGES CAREFULLY IN ORDER TO ASSURE COMPLIANCE
WITH THE TERMS OF THE PERMIT AND APPLICABLE RULES AND REGULATIONS. If a
Possible Violation is indicated, you will be notified under separate cover as to when the Mined Land
Reclamation Board will consider possible enforcement action.
INSPECTION TOPICS: HB, OD
PROBLEM /POSSIBLE VIOLATION: (PB) The slurry wall installed in 2005, lacking means of ground water
conveyance around the pit, is causing ground water mounding and elevated ground water levels upgradient of
the site. This is causing the water table to rise to the point that areas that were dry before the slurry wall
installation are now saturated, and in some places inundated. This represents an Enforcement Problem, and
could escalate to a Possible Violation if allowed to continue unabated. The following sections of the Colorado
Mined Land Reclamation Act apply: (1) §34- 32.5- 116(4)(h) for failure to minimize disturbances to the
prevailing hydrologic balance of the affected land and of the surrounding area and to the quality and quantity
of water in surface and groundwater systems during the mining operation, and (2) §34- 32.5- 116(4)(i) for failure
to protect areas outside of the affected land from slides or damage occurring during the mining operation.
CORRECTIVE ACTIONS: To relieve the ground water mounding situation, the operator must provide a means of
conveyance around the pit, outside of the slurry wall, that will maintain the ground water table at a level that
will prevent water table rises and saturation / inundation of the upgradient ground. The operator must
provide a plan to the Division in the form of a Technical Revision within 60 days of the date of this report, the
installation of which must be completed within 90 days of final Division approval of the plan. The TR must
contain cost estimates to allow the Division to calculate bonding requirements.
CORRECTIVE ACTION DUE DATE: Plan /Technical Revision by 04 January 2012. Installation within 90 days
following Division approval of plan.
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