ENFORCE34720

• Permit No: M1988112
• IBM Index Class Name: Enforcement
• Doc Date: 7/22/1992
• Doc Name: BOARD MEETING
• Media Type: D
• Archive: No

(Z) If the l=lAD cyanide level :~ithin an active taiiicgs pond a.,ceej;,l5 pcm, 6,4RI
shall immediately notify the Division and cease thz rzleasz of ~ailings and
liquids from the pie processing plant to the active tailing; pod until it has
achieved 15 ppm or less WAD cyanide concentration in the active, tailings pond.
(3> If the WAD cyanide level within an inactive tailings pond exceeds 10 ppm, BMRI
shall immediately notify the Division and shall take all necessary steps to
return the pond to 10 ppm or less. In addition, 6MRI shall not initiate the
release of tailings and liquids from the ore processing plant ttD the inactive
tailings pond until it has achieved 10 ppm or less WAD concentration in the
pond.
(4) BMRI is to use all reasonably practical steps to continue to 1o er the cyanide
levels in ill tailings ponds to the lowest reasonably achievabl levels, and to
continue to use its best efforts at all times to achieve that g a1. If at any
time the staff, or other parties, believe that BMRI is not doin everything
reasonably practical, BMRI can be brought back to the Board for further action,
including civil penalties and further corrective action orders.
(5) BMRI also proposes to implement the INCO S02/Air tailings treat ent process
described in TR-O10 as a final process to achieve and maintain c mpliance with
the cyanide level permit standards specified in the permit. TR- 10 was
submitted to the Division on June 16, 1992 and is currently under review. BMRI
shall commence operation of the INCO Process as soon after appr al as
possible, in accordance with the schedule for implementation contained in
TR-010.
(6> Upon implementation of the INCO tailings treatment process, BMRI shall commence
treatment of the the active tailings pond to bring it into compliance with the
permit standards of 4.4 ppm total Cyanide and 3.8 ppm WAD cyanid as rapidly as
possible. After the active tailings pond has achieved compliant with the
permit standards, BMRI shall commence treatment of the inactive M~tailings pond
to bring it into compliance with the permit standards as rapidlyas possible.
(7> BMRI received verbal approval for the installation of the two ad itional ground
water monitoring wells proposed within its technical revision TR 008 on July 7,
1992. No later than August 6, 1992, BMRI shall install, complet ,
hydrologically test, geophysically log, and sample the wells. B Ri shall also
evaluate the data and submit a report presenting Bh1RI's conclusi n regarding
the necessity of additional ground water monitoring modification .
Wi-iin thirty days following the Division's approval of the eval ative report
submitted in accordance with TR-008, BMRI shall install and comp ete any
necessary additional ground water monitoring wells.
If BMRI fails to meet any of the above deadlines, or any leakage!1s detected
from the tailings impoundment, BMRI shall immediately notify the Division and
cease operation of the ore processing plant.
(8) The Division, and any other party wishing to do so, shall provid~ the Board
with monthly reports on the status of the tailings pond detoxifi ation process,
until such time as cyanide levels within the tailings ponds have .re turned to
compliance with the permit standards.