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Prince Albert Mine Plan of Operations Interim Management Plan <br />6.3 Measures to Isolate or Control Toxic or Deleterious Materials <br />Potentially toxic materials on site are limited to storm -water runoff from ore stockpiles, fuel, and oil. <br />All stockpiled ore will be transported off site to an appropriate processing facility or placed back in <br />the underground workings within six months of any temporary closure in accordance with DRMS <br />requirements. During short-term shut -downs of one to six months, all materials that represent a spill <br />threat to the environment (fuel, oils and other petroleum products) or a physical threat to the public <br />(explosives) will be kept in locked secured areas with secondary containment features. Secondary <br />containment features will be periodically inspected and maintained. If mine operations are suspended <br />over a longer time period, all hazardous materials will be removed from the site. <br />6.4 Maintenance of the Project Area <br />The surface areas will be maintained in accordance with the project's Storm Water Management Plan <br />(Attachment U.8.1 "Stormwater Management Plan (SWMP)" to the Exhibit U "EPP "). Areas <br />exhibiting erosion will be repaired and runoff will be monitored in accordance with the SWMP. <br />Ditches, and other surface drainage features, will be periodically inspected and cleaned out as needed. <br />All areas of the site will be kept clean and free of litter and debris. Trash, used tires, old equipment <br />parts, empty barrels, and other miscellaneous materials will be removed from the site and either <br />recycled or disposed of properly. Site security and the safety of the general public will be maintained <br />by discouraging unauthorized access through the use of locked gates, fences, and warning signs. <br />6.5 Monitoring Site Conditions during Periods of Non - operation <br />Monitoring of site conditions during periods of non - operation will continue uninterrupted in <br />accordance with the provisions of the Stormwater Management Plan. In addition, all surface areas <br />will be inspected at least weekly during a closure of six months or less. If site conditions remain <br />stable and the closure period extends beyond six months, Rimrock may reduce the frequency of <br />surface inspections to once per month. <br />6.6 Closure Schedule and Reporting <br />No seasonal or maintenance shutdowns of the project are anticipated at this time. Rimrock will <br />provide notice to the BLM within 30 days after any suspension in operations that may last longer than <br />180 days in conformance with Part 3802.4 -7 of Title 43 of the CFR. This notice will include: <br />a. Verification of intent to maintain structures, equipment and other facilities. <br />b. The expected reopening date. <br />c. Current mine contact information. <br />d. Any revisions to this Interim Management Plan. <br />Rimrock Exploration and Development Page 25 of 27 <br />