1. 2006 Air Quality EIS Health Canada Technical Review  Cumberland Resources investigated and did not find background air quality monitoring data from other development sites within Nunavut  The regular wetting is not feasible considering the size of a large live ore stockpile 17 m high and 44 m diameter  Mitigation of ore pile fugitive dust will be achieved by: -natural moisture of ore which is about 10% -natural precipitation that will add moisture to the pile -content of aggregate fines (up to 20 cm diameter material)  Winds associated with dust storm are over 124 km/h; this has occurred 1 hour over 30 year period (probability 1 : 262,800) and 63 km/h winds occurred with 4% frequency

2. 2006 Air Quality EIS Health Canada Technical Review The STOCKPIL fugitive dust model was used to predict fugitive dust emissions at different wind speeds with conservative assumptions: - threshold friction velocity 0.5 m/s - all particulate size < 30 µm - material density 3.1 g/cm 3 -roughness surface coefficient 0.03 (dimensionless) Wind data are as per Environment Canada Climate Normals, Baker Lake 1971-2000 Wind Speed, km/h Hourly Emission, kg/h 200.1 289.3 52331.9 63753.3 1248391.2

3. 2006 Air Quality EIS Government of Nunavut Technical Review  Incinerator emissions management plan will be developed to meet CCME Canada-wide Standards for dioxins and furans. The plan will include but not be limited to: -keeping qualitative and quantitative records of all waste generated at the mine site during construction and operation -annual reports of waste inventory during construction and operation in 3 categories: landfilling, recycling and incinerating - implementing segregation process aimed at materials with greater potentials to generate emissions of dioxins and furans mercury -the incinerator operational parameters at the designed specs - staff will be trained to ensure that the incinerator is operated properly

4. 2006 Air Quality EIS Government of Nunavut Technical Review  Dust suppression guidelines issued under Paragraph 2.2 of the Environmental Protection Act will be added to Cumberland Air Quality Management Plan  Prior to operation, Cumberland will develop Energy Conservation Plan that would ensure the proper utilization and management of energy sources and reduction in GHG emissions

5. 2006 Air Quality EIS Environment Canada Technical Review  Cumberland will measure annual PCDD/PCDF emissions by manual stack sampling in accordance with Environment Canada Method EPS1/RM/2 for Semi-Volatile Organic Compounds and mercury emission as per US EPA Method 29 Determination of Metals Emissions from Stationary Sources and report results to Environment Canada and Nunavut Department of Environment  Cumberland will reassess the selection of the incinerator choice based on Best Available Economically Feasible Technology (BAEFT)