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Water Licence Annual Report for 1997, Water Licence N7L2-1616, Ekati Diamond Mine (BHP Billiton, March 1998)
31 March 1998Unknown / Unclassified
BHP Diamonds Inc.'s 1997 Annual Report for Water License N7L2-1616 documents water-related activities at the Ekati Diamond Mine during its construction phase. The report covers freshwater use, dewatering operations, process water management, sewage treatment, environmental monitoring, waste management plans, and spill incidents, with operational startup scheduled for October 1998.
Water Licence Wastewater Water Quality Waste Rock Closure & Reclamation
Technical Review of Acid/Alkaline Rock Drainage (ARD) and Geochemical Characterization Program and Waste Rock and Ore Storage Management Plan, Ekati Diamond Mine (Chris Mills, March 1998)
8 March 1998Report
Chris Mills provides a technical review of BHP Diamonds Inc.'s Acid/Alkaline Rock Drainage (ARD) and Geochemical Characterization Program and Waste Rock and Ore Storage Management Plan for the Ekati Diamond Mine. The review identifies critical uncertainties regarding the realizable neutralizing potential of kimberlitic materials proposed for blending with potentially acid-generating waste rock, particularly Misery Schist and Fox Diabase, and recommends additional quantitative mineralogical studies to resolve these uncertainties before final waste rock dump design.
Acid Rock Drainage Waste Rock Geochemistry Monitoring
Spill and General Contingency Plan, Ekati Diamond Mine (BHP Billiton, March 1998)
1 March 1998Report
BHP's Spill and General Contingency Plan for the Ekati Diamond Mine outlines emergency response procedures, safety protocols, and cleanup strategies for potential spills of petroleum products, chemicals, and other hazardous materials during mining operations and transportation. The plan includes detailed response actions for 24 different substance types, spill response organization, contact lists, equipment inventory, and environmental sensitivity mapping for the mine site and surrounding areas near Lac de Gras in the Northwest Territories.
Regulatory Wastewater Waste Rock Water Quality Environmental Agreement
Environmental Agreement Annual Report Executive Summary, Ekati Diamond Mine (BHP Billiton, 1998)
1 February 1998Report
BHP Diamonds Inc.'s 1998 Environmental Agreement Annual Report documents the first full year of operations at the Ekati Diamond Mine in the Northwest Territories, detailing environmental management practices, monitoring results, and impact mitigation strategies across water quality, air emissions, waste management, wildlife, and community engagement.
Development Plans Monitoring Wildlife
Waste Rock Management Plans, Fox & Misery Pipes, Ekati Diamond Mine (BHP Billiton, 1998 to 2003)
1998–2003Report
Waste Rock Management Plans binder for the Ekati Diamond Mine (BHP Billiton Diamonds Inc.) covering 2000–2006. Includes Kevin Morin (Day, 2003) analysis of acid rock drainage (ARD) prediction problems at Ekati, Sexsmith / Milnes ARD reviews, Agency (Independent Environmental Monitoring Agency) reviews of Waste Rock and Ore Storage Management plans (Red Pederson, Melody McLeod, Gordon Wray correspondence), MVLWB correspondence on Operating Environmental Management Plan support documents, BHP Billiton diamond drill logs (FGT-07 — biotite granite, plagioclase, K-alteration), EBA Engineering Consultants 1997 tailings size-distribution data (Gaudin-Schuhmann), and proposed Misery, Panda/Koala, North/South/East waste rock dump configurations on Lac de Gras.
Acid Rock Drainage Waste Rock Geochemistry
Misery Development File, Water Licence N7L2-1616 and Fisheries Authorization SC01111, Ekati Diamond Mine (BHP Billiton, 1998 to 2008)
1998–2008Report
Misery Development binder for the Ekati Diamond Mine (1998-2002). Includes Misery Pit site maps with explosives magazines, impervious dam, ore stockpile, Thinner Lake, King Pond, Cujo Lake (UTM coordinates near 537,370E / 7,162,000N), AMEC Earth Materials (Calgary, October 2001) precipitation modelling of 10,000 mg/L chloride from calcium-chloride systems and sulfate-salt precipitation, John Witteman (BHP) facsimile to Peter McCart on Misery Pit Year 2000 site layout (Treated Sewage discharge, Freshwater Intake, North/East/South Waste Rock Dumps, Year 2006 Misery Pit configuration), and correspondence with Melody McLeod (MVLWB), Laurie Cordell (MVLWB Misery Waste Rock Dam approval staff report), and Zabey Nevitt (IEMA) on Desperation Pond cofferdams.
Development Plans Waste Rock Regulatory Air Quality
Acid Rock Drainage and Geochemical Characterization Program, Ekati Diamond Mine (Dames & Moore, December 1997)
31 December 1997Report
This final geochemical characterization report for BHP Diamonds' proposed diamond mine in the Northwest Territories evaluates the acid/alkaline rock drainage potential of waste rock, ore (kimberlite), and tailings through static and kinetic testing methods. The study predicts water quality from mine facilities including waste rock dumps, pits, underground workings, ore stockpiles, and tailings, identifying the Misery Schist Waste Rock Dump as a potential source of acidic drainage with elevated metal concentrations, while most other facilities are expected to remain benign.
Acid Rock Drainage Waste Rock Geochemistry
Waste Rock and Ore Storage Management Plan, NWT Diamonds Project (BHP Billiton, December 1997)
30 December 1997Report
BHP Diamonds Inc. submits a comprehensive Waste Rock and Ore Storage Management Plan for the Ekati Diamond Mine in the Northwest Territories, detailing the geochemical characterization of rock types from five kimberlite pipes (Panda, Koala, Misery, Fox, and Leslie), acid/alkaline rock drainage potential, and management strategies for waste disposal over the mine's operational life and closure.
Acid Rock Drainage Waste Rock Geochemistry
Proposed Terms of Reference for a Kimberlite Toxicity Study, Water Licence N7L2-1616 (ETL, January 1998)
18 December 1997Report
Proposal for a comprehensive kimberlite toxicity study for BHP Diamonds Inc. under Water Licence N7L2-1616, designed to assess acute and chronic effects of kimberlite solutions from diamond processing on aquatic organisms and fish health through laboratory bioassays, toxicity identification evaluations, and sub-lethal exposure experiments.
Aquatics Water Quality Waste Rock
Modifications to Repair the Phase 1 Tailings Containment Area (BHP Billiton, October 1997)
6 October 1997Letter
BHP Diamonds Inc. requests modification to water licence N7L2-1616 to repair and reline the Phase 1 tailings containment area due to liner damage discovered during inspection. The remediation work includes dewatering the unlined portion, removing the pumphouse, installing a new HDPE liner, and infilling with till material and waste rock.
Regulatory Water Licence Waste Rock
Interim Abandonment and Restoration Plan, NWT Diamonds Project (BHP Billiton, September 1997)
30 September 1997Report
BHP Diamonds Inc. submitted an Interim Abandonment and Restoration Plan for the NWT Diamonds Project on September 30, 1997, detailing comprehensive reclamation strategies for five kimberlite pipes (Panda, Koala, Fox, Leslie, and Misery) over a projected 25-year mine life, including methods for stabilizing open pits, managing tailings, storing waste rock, and restoring vegetation and water resources.
Closure & Reclamation Closure Plan Revegetation
Industrial Water Use Inspection Reports & Related Correspondence, NWT Diamonds Project (DIAND, July to October 1997)
17 September 1997Report
A comprehensive collection of industrial water use inspection reports from September-October 1997 for BHP Diamonds Inc.'s NWT Diamonds Project (Ekati Mine) under water licence N7L2-1616, documenting dewatering operations at multiple lakes, tailings management, waste disposal compliance, and environmental monitoring program requirements.
Regulatory Water Licence Inspections Waste Rock
Environmental Report 1997 (BHP Billiton, 1997)
1 September 1997Report
BHP's 1997 Environmental Report documents the global mining, petroleum, and resource company's environmental management policies, performance, and initiatives across operations in 70 countries. The report covers environmental compliance, resource conservation, emissions monitoring, community consultation, and major projects including the Northwest Territories Diamonds Project in Canada and ongoing environmental remediation at the Ok Tedi mine in Papua New Guinea.
Development Plans Air Quality Water Quality Waste Rock Closure & Reclamation Wildlife
BHP Environmental Report Booklets, Ekati Diamond Mine (BHP Billiton, 1997 to 2000)
1 September 1997Report
BHP's Environmental Agreement Annual Report for 1997 documents the first year of environmental monitoring at Canada's first diamond mine, Ekati, located in the Northwest Territories. The report presents comprehensive baseline environmental studies and monitoring programs across air quality, aquatic effects, wildlife, archaeology, and reclamation efforts.
Development Plans Monitoring Aquatics
Terms of Reference for Groundwater Study, Ekati Diamond Mine (MVLWB, August to October 1997)
1997Report
Ground Water Studies binder for the Ekati Diamond Mine (1997). Includes Piteau Associates' review (August 19 1997) of BHP's Proposed Terms of Reference for the Groundwater Study (transmitted to Tony Pearse, IEMA), Gordon (NWT Water Board) correspondence to Jim Excell (BHP) under Water Register N7L2-1616 (October 27 1997), and 3D Groundwater Model methodology — periodic GIS-based comparison and calibration with Operational Plan data, geologic mapping inputs, freshet-volume dewatering buffer, characterization of pre-mining regional gradients with discharge to Long Lake and Kodiak Lake, and fault-zone discrete-flow modelling in 2D vs 3D.
Water Quality Monitoring Regulatory Correspondence Development Plans
Construction Phase Environmental Management Plan, NWT Diamonds Project (BHP Billiton, August 1997)
1 August 1997Report
This is BHP Diamonds Inc.'s Construction Phase Environmental Management Plan for the NWT Diamonds Project in the Lac de Gras area of the Northwest Territories, submitted in August 1997. The plan outlines comprehensive environmental management strategies covering air quality, materials handling, wildlife protection, traffic management, aquatic life, waste management, and quarry operations during the construction phase scheduled from January 1997 to October 1998.
Development Plans Air Quality Wildlife
Construction Phase Environmental Management Plan, Appendices Volume 2 - NWT Diamonds Project (BHP Billiton, August 1997)
1 August 1997Report
BHP Diamonds Inc.'s Construction Phase Environmental Management Plan (August 1997) establishes comprehensive environmental awareness training and management procedures for the NWT Diamonds Project, including detailed protocols for all site personnel, contractors, and subcontractors to minimize environmental impacts during mine construction.
Development Plans Monitoring Air Quality Waste Rock
Pilot Revegetation Studies at the Fox Portal Site, NWT, Canada (BHP Billiton, 1997)
1 May 1997Report
This second annual report documents pilot revegetation studies at the Fox Portal site in the Northwest Territories, testing soil amendments (esker sand, lake sediment, organic soil) and plant materials (native grasses, forbs, shrub cuttings) to rehabilitate areas disturbed by diamond mining operations. Results after one growing season show that native-grass cultivars performed best with 4-8% plant cover, while soil microbiology and chemistry varied significantly among amendments, with organic soil showing the most favorable conditions for plant growth.
Closure & Reclamation Revegetation Waste Rock
NWT Diamonds Project News Release, Feasibility Study Completion & Regulatory Approvals (BHP Billiton, February 1997)
4 February 1997Report
BHP announces completion of the final feasibility study for the NWT Diamonds Project and confirms receipt of regulatory approvals including an 8-year Class A Water Licence and Environmental Agreement. Construction of mine infrastructure has commenced with production expected in the second half of 1998.
Development Plans Regulatory Water Licence Waste Rock
Construction Phase Environmental Management Plan, NWT Diamonds Project (BHP Billiton, February 1997)
1 February 1997Report
BHP Diamonds Inc.'s Construction Phase Environmental Management Plan (Version 1.0, February 1997) outlines comprehensive strategies and mitigation measures for managing environmental impacts during the construction of the NWT Diamonds Project (Ekati), covering air quality, materials management, waste management, wildlife protection, traffic control, and environmental monitoring from January 1997 through October 1998.
Development Plans Air Quality Wildlife

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472 documents · Page 18 of 24