2017-04-26_GENERAL DOCUMENTS - M1980244

• Permit No: M1980244
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Date: 4/26/2017
• Doc Name: Circuit Release
• From: CC&V
• To: DRMS
• Email Name: TC1
• Media Type: D
• Archive: No

known impacts to human health or the environment have been observed or are expected
to occur.
Excavation depth was determined by digging down past all material that appeared to be
soiled by solution.
The presence and placement of the HGM liner limits the potential for any material
(including slurry)to impact the surrounding environment.
Due to the timing of the event and its correlation with the April 2017 DRMS monthly field
inspection, DRMS inspector Amy Eschberger reviewed the event, including an
inspection of the event site with CC&V personnel to validate the completion of
remediation activities.
c. CC&V Contact
For any further information regarding this event please contact;
Meg Burt
Senior Environmental Manager
PO Box 191,
100 N 3rs St,
Victor, Colorado, 80860
Work: 719-689-4055
Cell: 775-397-3571
Fax: [phone]
d. Monitoring and analyses that are necessary to evaluate the situation and
corrective actions
CC&V will undertake soil samples at the location of the spill to validate that all slurry and
residual cyanide has been remediated.
e. Results of the Operator's investigation
Analysis of the event was unable to identify the specific cause of the blockage. Despite
this, a number of corrective actions have been identified to prevent recurrence of this
type of event within the CIP circuit including;
Installation of enhanced level control on each tank (cell) providing earlier indication of a
high level within each tank. This change is currently being tested to validate correct
functionality
To limit the potential for material to exit the HGM facility, CC&V have undertaken a
review of all doorway locations to ensure sufficient containment is in place. Where
containment can be enhanced, additional infrastructure will be installed.