APPENDIX A.22B: Spill Contingency Management Plan Volume A.i: PREFACE VOLUME A.V: Volume A.V: Volume A.ii: Volume A.iii: Volume A.iV: ADDITIONAL Project BioPhysicAl socio-economic AdditionAl introduction VAlued VAlued YESAAyesAA & oVerView comPonents comPonents REQUIREMENTSreQuirements A.1 Introduction A.6 Terrain Features A.13 Employment and A.20 Effects of the Income Environment on Concordance Table to the the Project A.1A A.7 Water Quality A.13A Economic Impacts of the Executive Committee’s Request Casino Mine Project for Supplementary Information A.21 Accidents and A.7A Variability Water Balance Model Malfunctions Report A.14 Employability First Nations and A.2 A.7B Water Quality Predictions Report A.22 Environmental Community A.15 Economic Management Consultation A.7c Potential Effects of Climate Change on Development and the Variability Water Balance A.22A Waste and Hazardous Business Sector Materials A.2A Traditional Knowledge Management Plan Bibliography A.7d Updated Appendix B5 to Appendix 7A A.16 Community A.22B Spill Contingency A.7e 2008 Environmental Vitality Management Plan A.3 Project Location Studies Report: Final A.17 Community A.22c Sediment and Erosion A.7F The Effect of Acid Rock Drainage on Control Management A.4 Project Description Casino Creek Infrastructure and Plan Services A.7G Toxicity Testing Reports A.22d Invasive Species A.4A Tailings Management Facility Management Plan Construction Material Alternatives A.7h Appendix A2 to Casino Waste Rock A.18 Cultural and Ore Geochemical Static Test As- A.22e Road Use Plan A.4B Information on Alternative Access Continuity sessment Report: Cross-Sections Road Alignments A.18A Heritage Resources A.22F Socio-Economic Assessment Areas Management Plan A.4c Feasibility Design of the Heap A.7i Casino Kinetic Testwork 2014 Update Leach Facility for Ore, Waste Rock and Tailings A.18B Heritage Sites Summary A.22G Liquid Natural Gas Management Plan A.4d Report on the Feasibility Design of A.7j Preliminary Risk Assessment Metal the Tailings Management Facility Leaching and Acid Rock Drainage A.19 Land Use A.22h ML/ARD A.4e Results of Additional Lab Testing of A.7K Casino Mine Site Borrow Sites and Tenure Management Plan Leach Ore ML/ARD Potential A.23 Environmental A.7l Casino Geochemical Source Term A.4F Waste Storage Area and Stockpiles Monitoring Plans Feasibility Design Development: Appendix B A.4G Updated Hydrometeorology A.7m 2013-2014 Groundwater Data Report A.24 Conclusions Report A.4h Cold Climate Passive Treatment A.7n Extension of Numerical Systems Literature Review Groundwater Modelling to include Dip A.25 References Creek Watershed A.4i Open Pit Geotechnical Design Air Quality A.4j Laboratory Evaluation of the A.8 SO2/Air and Peroxide Process A.8A Emissions Inventory for A.4K Metal Uptake in Northern Construction and Operations Constructed Wetlands A.9 Noise A.4l Revised Tailings Management Facility Seepage Assessment A.10 Fish and Aquatic A.4m Processing Flow Sheets Resources A.4n Scoping Level Assessment A.10A Updated Fish Habitat Offsetting Plan of Casino Property A.4o Advanced Metallurgical A.10B Fish Habitat Evaluation: Instream Assessment of the Casino Flow and Habitat Evaluation Copper Gold Project Procedure Study A.4P Production of Environmental Tailings Samples for the Casino A.11 Rare Plants and Deposit Vegetation Health A.4Q Mine Site Borrow Materials A.12 Wildlife Assessment Report A.4r Report on Laboratory Geotechnical A.12A Wildlife Mitigation and Monitoring Testing of Tailings Materials Plan V.1.2. | Supplementary Information Report | Mar 2015 A.12B Wildlife Baseline Report V.2 CASINO PROJECT A.5 Effects Assessment Methodology A.12c Moose Late Winter Habitat Suitability Report CASINO PROJECT SPILL CONTINGENCY MANAGEMENT PLAN PRELIMINARY DRAFT Prepared by: Casino Mining Corporation March 2015 Casino Mining Corporation Casino Project Executive Summary The Casino Mine Project is an approximately 22 year mine project that will produce copper and molybdenum concentrates, and gold dore bars via flotation milling and heap leach processing, respectively. The proposed project includes a four year construction period and a 26 year post-closure period. A key component of the Casino Project is the upgrade and extension to the existing Freegold road, jointly called the Casino Mine Access Road. The Freegold Road is an existing 80 km long gravel resource road owned and operated by the Yukon Government. Casino Mining Corporation (CMC) proposes to upgrade the existing Freegold Road, including the addition of a bypass road around the town of Carmacks, and extend the road a further 120 km to the Casino Mine Site. Both the upgrade and the extension would be two-lane, gravel resource roads designed for all weather use by haul trucks with highway legal loads. The roads will be designed to BC Ministry of Forest guidelines, with a 70 km/hr design speed, with some short 50 km/hr sections where road geometry is limited by the terrain. The road will be 8.2 m wide with maximum grades of 8%. The Casino Project will require the transportation of various materials for operation and construction of the mine, including up to eleven tanker trucks per day for LNG transportation from Fort Nelson. Additionally, the milling processes will require shipment of reagents, including cyanide based reagents for the leaching of gold in the heap leach facility. This Spill Contingency Management Plan (SCMP) is a preliminary plan to outline the precautions and spill response procedures for the proposed Casino Project. The SCMP will be updated as the project is refined, and has been derived from guidance in the Plan Requirements Guidance for Quartz Mining Projects (Government of Yukon, 2013), Guidelines for Preparing Contingency Plans for Carriers of Hazardous Waste (Ministry of Environment, 2011), and from the Land Transportation Emergency Response Guideline for Petroleum Spills (Canadian Petroleum Products Institute, 2008). The SCMP contains information on the identification of the potential spills that may occur at the Casino Mine, and outlines spill response procedures for specific types of spills. Spill Contingency Management Plan i March 2015 PRELIMINARY DRAFT Casino Mining Corporation Casino Project TABLE OF CONTENTS 1 - Introduction ............................................................................................................................................... 1 2 - Hazardous Material Identification ............................................................................................................. 4 2.1 LNG ............................................................................................................................................... 5 2.2 Diesel ............................................................................................................................................ 5 2.3 Reagents ....................................................................................................................................... 5 2.4 Cyanide ......................................................................................................................................... 6 2.5 Contaminated effluent ................................................................................................................... 9 3 - Spill Prevention and Training ................................................................................................................. 11 3.1 Access Road ............................................................................................................................... 11 3.2 Mine Site ..................................................................................................................................... 11 4 - Spill Reporting ........................................................................................................................................ 13 5 - Emergency Response Communication .................................................................................................. 15 5.1 Emergency Organization and Responsibilities ........................................................................... 15 5.2 External Notification .................................................................................................................... 16 6 - Emergency Response to Spills .............................................................................................................. 17 6.1 General Emergency Response ................................................................................................... 17 6.2 Response Action and Containment............................................................................................. 19 6.2.1 Spill Response Equipment .................................................................................................. 20 6.2.2 Containment and Cleanup .................................................................................................. 20 6.2.3 Spills to Land ....................................................................................................................... 20 6.2.4 Spills to Water ..................................................................................................................... 22 6.2.5 Spills to Ice or Snow ............................................................................................................ 23 6.2.6 Chemical Spills ...................................................................................................................