Huckleberry Mine Ltd. (HML) operates a porphyry copper mine located 86 km southwest
of Houston, in northwestern BC. Huckleberry Mine is owned by Mitsubishi Materials
Corporation, Dowa Mining Co. Ltd, Furukawa Co., Marubeni Corporation; and Imperial
Metals Corporation. The mine is located at the southern base of Huckleberry Mountain
and north ofTahtsa Reach, part of the Nechako Reservoir.
Mine site water quality is regulated under the Environmental Management Act effluent
permit PE-14483. The latest amendments are dated October 31, 2013 (Appendix IA);
and November 9, 2013 (Appendix IB) which includes an Approved a Discharge and
Receiving Environment Monitoring Program (ADREMP) (Appendix IC). The ADREMP
specifies locations that must be monitored, the frequency of sampling, the parameters at
each location that need to be reported, and the concentration limits of specific water
quality parameters (Appendix IA, IB and IC).
The purpose of this report is to provide a history of the site, an update on operations; to
identify any exceedances of permitted parameters; and to identify trends in water quality.
Io 2014, there were a total of five permitted effluent discharges from the mine to the
receiving environment including; Tahtsa Reach Outfall (TRO); seven sediment control
ponds (SC-2, SC-3, SC-4, SC-5). Three additional sediment control ponds (SC-6, SC-7
and SC-9) operated under a temporary permit during TMF -3 construction which expired
in August 2013 and currently are managed under a seasonal pump back system, where
excess pond water is pumped to TMF-3 and discharged via the TRO.
Figure I shows discharge and receiving environment water quality sampling stations.
The TRO is the primary discharge for mine effluents for the entire operation including the
East Zone Pit (EZP), Main Zone Optimization (MZO; Tailings Management Facility No.
2 (TMF-2) and Tailings Management Facility No.3 (TMF-3); and the mill and camp site.
Water quality monitoring of these discharges along with the receiving environment are
described in this report. Additional receiving environment water quality results are
presented under separate cover in the 2014 Annual Aguatic Monitoring Report (AAMR)
(Hatfield, 20 15). In addition, information on site reclamation is presented under
separate cover in the 2014 Annual Reclamation, Acid Rock Drainage & Metal Leaching
Assessment Report (HML 2015).
Huckleberry Mine Ltd., Ashley Brinnen
Kent Christensen. 2014. Annual Water Quality Report 2014. Huckleberry Mine LTD.