Find documents by name, keyword, or question across the IEMA Ekati archive.
A comprehensive research binder containing bibliographic references and materials organized into four tabs covering air quality studies, aquatic research, wildlife monitoring, and miscellaneous environmental topics related to the Ekati Diamond Mine region in the Northwest Territories.
This conference paper presents field experiments conducted in April 1992 near Inuvik, Canada, investigating net fluxes of nitrate and sulfate between arctic snow surfaces and the atmosphere, with particular focus on the influence of solar radiation. Results show solar radiation had no significant effect on NO3 and SO4 exchange, while sulfate exhibited dry deposition in the second experiment with a calculated deposition velocity of 0.09 cm s⁻¹.
Field experiments near Inuvik, NWT measured spatial and temporal variations in snowmelt runoff chemistry across a 0.25 m² lysimeter with 16 compartments, demonstrating that solute concentration factors are inversely related to flow volume early in melt and converge as melt progresses, with implications for understanding heterogeneous flow path controls on meltwater chemistry.
The Northwest Territories Waters Act, assented to June 23, 1992, establishes the legal framework for managing water resources in the Northwest Territories, creating the Northwest Territories Water Board to issue water use and waste deposit licences and regulate water management through type A and type B licensing systems.
The Northwest Territories Water Board published guidelines for the discharge of treated municipal wastewater in the NWT, establishing effluent quality criteria and receiving water quality objectives to protect public health and environmental quality. The document specifies treatment requirements, monitoring protocols, and licensing procedures for municipal waste systems across different receiving environments including streams, rivers, lakes, estuaries, and marine waters.
The Northwest Territories Water Board's 1992 guidelines establish effluent quality standards and receiving water quality objectives for the discharge of treated municipal wastewater throughout the NWT, incorporating revised criteria based on empirical data and addressing summer/winter discharge differences, operational requirements, and site-specific considerations.
A Department of Fisheries and Oceans publication explaining Canada's Fisheries Act and its protections for fish habitat, including definitions, prohibitions, compliance obligations, enforcement powers, and penalties for harmful alterations or pollution of fish spawning, rearing, and migration areas in Canadian waters.
United Nations Economic Commission for Europe report on post-project analysis (PPA) in environmental impact assessment, based on a task force led by Canada. The report analyzes 11 case studies from multiple countries to document approaches for using PPA to monitor project implementation, verify impact predictions, ensure compliance with conditions, and improve future EIA processes.
A comprehensive overview study of surface water resources in the Coppermine River basin, Northwest Territories, examining water quantity and quality data collected by Environment Canada's Inland Waters Directorate, with analysis of hydrologic characteristics, regional context, and implications for future mineral and hydroelectric development.
This academic article examines environmental impact assessment (EIA) failures and successes for the James Bay hydroelectric project in northern Quebec, analyzing six case studies of predicted and unpredicted impacts on Cree and Inuit populations. The author argues that impact prediction is intrinsically difficult due to nonequilibrium systems and identifies the need for more comprehensive ecosystem approaches, integration of social and environmental monitoring, and focus on manageable subsystems rather than linear, mechanistic assessments.
This report develops site-specific water quality criteria for nitrogen compounds (nitrate, nitrite, and ammonia) in the Canadian portion of the Flathead River Basin to support fish and aquatic life and address concerns about potential impacts from proposed coal mining and oil/gas development. The criteria account for nitrogen cycling processes, physical and chemical factors affecting toxicity, and the specific life stages and species of fish present in the system.
The Northwest Territories Water Board's February 1987 guidelines provide comprehensive technical standards and procedures for designing, constructing, operating, and abandoning tailings impoundment facilities in the unique permafrost environment of the NWT, addressing site selection, design considerations specific to cold regions, construction methods, operational control, and closure planning.
This is the Department of Fisheries and Oceans' national policy for fish habitat management in Canada, presented to Parliament in October 1986. The policy establishes a framework for achieving a net gain in the productive capacity of fish habitats through conservation, restoration, and development goals, guided by a 'no net loss' principle and implemented through eight strategies including protection, compliance, integrated resource planning, research, and cooperative action.
This study compared stream habitats and grayling populations in reaches affected by instream granular materials mining during Trans Alaska Oil Pipeline construction (1974-1977) with undisturbed control reaches in five northern Alaskan streams, finding that mining typically reduced habitat quality, fish size, and biomass, with effects persisting 4-9 years after disturbance, though one exceptional case showed improved juvenile grayling habitat from increased depth.
A three-year field study examining habitat distribution of juvenile and adult Arctic grayling (Thymallus arcticus) in 23 streams across the Brooks Range, Alaska, comparing occupied habitats with available habitat to determine habitat preferences and selection patterns.
This research paper presents relative suitability-of-use functions for juvenile and adult Arctic grayling (Thymallus arcticus) in 23 streams across northern Alaska, using depth, velocity, and substrate type as key habitat parameters. The study demonstrates that juvenile grayling prefer depths of 0.65 m with zero velocity and fine substrates, while adults prefer greater depths of 0.80 m, with both groups showing clear correlations between habitat suitability function values and fish occupancy and density.
A comprehensive synoptic review of cadmium hazards to fish, wildlife, and invertebrates documenting toxicity thresholds, bioaccumulation patterns, sublethal effects, and recommendations for environmental protection standards across freshwater and marine ecosystems.
Surface lease agreement between the Province of Saskatchewan and Anok Ltd. for uranium mining and milling operations on 2690.4 hectares, establishing terms for mine development, environmental protection, occupational health standards, abandonment procedures, and economic benefits for northern residents including employment quotas, training programs, and local business preferences.
Surface rights lease agreement between the Saskatchewan Crown and ANOK LTD. for uranium mining and milling operations covering 2,690.4 hectares, with provisions for environmental protection, occupational health, employment of northern residents, and local business participation.
Two experimental studies comparing the susceptibility of Atlantic salmon smolts and yearling rainbow trout to zinc sulphate and ammonium chloride across varying salinity levels from fresh water to full-strength sea water. Results show resistance to both poisons increases with salinity up to 30–40% sea water, with salmon smolts consistently more susceptible than trout, and tolerance differences attributable to gill permeability and osmotic effects.