24-MMP-A6 Mining and the Environment · May 2015
Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
EGBC National Exam — Mining and Mineral Processing Engineering, 09-MMP-A6 Mining and the Environment, 2015-May. 3 hours duration, open book (any non-communicating calculator permitted). FIVE questions constitute a complete exam paper: Questions 1 and 2 are MANDATORY, and THREE questions must be selected from the OPTIONAL Questions 3 to 6, with only the first three optional answers appearing in the answer book marked. Most questions require a full-sentence or bullet-point response.
Reference texts: BC Ministry of Energy, Mines and Low Carbon Innovation, Health, Safety and Reclamation Code for Mines in British Columbia (current edition) (permitting, reclamation and closure planning requirements); Canadian Dam Association (CDA), Dam Safety Guidelines (2013/2019 update) (dam classification, tailings dam consequence categories, dam safety review and inspection intervals); Global Industry Standard on Tailings Management (GISTM, 2020) (tailings governance, design and closure principles); Price, W.A., MEND Report 1.20.1, Prediction Manual for Drainage Chemistry from Sulphidic Geologic Materials (1997/2009) (acid-base accounting, NPR screening criteria, ARD prevention and treatment); International Network for Acid Prevention (INAP), Global Acid Rock Drainage (GARD) Guide (ARD prediction, prevention, treatment and waste rock encapsulation design); Government of Canada, Metal and Diamond Mining Effluent Regulations (MDMER, the current name for the exam's "MMER") under the Fisheries Act; Government of Canada, Impact Assessment Act (successor to the 2012 Canadian Environmental Assessment Act); Government of Canada, Canadian Environmental Protection Act, 1999 (National Pollutant Release Inventory); Mining Association of Canada, Towards Sustainable Mining Tailings Management Protocol; International Cyanide Management Institute, International Cyanide Management Code; ATSDR, Toxicological Profiles for polycyclic aromatic hydrocarbons, mercury, lead and cyanide.
Question text not reproduced: the examination questions are © Engineers and Geoscientists BC. Open the official past paper (linked at the top of this page) to read the question, then follow the worked solution below.
All eight listed instruments are discussed below, covering both required groups in full (the exam asks for any five subject to the group limits; a working candidate would select two federal plus three industry items).
| Instrument | Role, operator responsibilities, and government powers |
|---|---|
| Canadian Environmental Assessment Act (now the Impact Assessment Act) | Triggers a formal federal impact assessment for a proposed mine (new or major expansion) that meets a prescribed capacity threshold on the Physical Activities Regulations, requiring the proponent to characterize baseline environmental, health, social and Indigenous-rights effects and propose mitigation before a Minister or the Impact Assessment Agency decides whether the project may proceed. The operator's engineering staff must produce the technical baseline studies, design mitigation measures (e.g. tailings facility siting, water management plans) and commit to enforceable conditions of approval; the federal government holds the power to refuse the project outright, impose binding conditions, and require follow-up monitoring to verify predicted effects. |
| National Pollutant Release Inventory (NPRI, under the Canadian Environmental Protection Act, 1999) | Requires facilities exceeding prescribed employee-hours and substance-quantity thresholds to report annually on releases, disposals and transfers of over 300 listed substances (including many metals and their compounds) to air, water and land, creating a public, facility-level emissions inventory. Site environmental staff compile and submit the annual report; Environment and Climate Change Canada administers the database, verifies submissions, and can pursue enforcement for non-reporting or misreporting, though NPRI itself sets no discharge limits – it is a public transparency and trend-tracking tool that regulators and communities use to identify facilities warranting closer scrutiny under other instruments (such as the MDMER). |
| Metal Mining Effluent Regulations (MMER, now the Metal and Diamond Mining Effluent Regulations) under the Fisheries Act | Governs the deposit of mine effluent (and, via Schedule 2 listing, tailings) into water frequented by fish, setting authorized concentration and mass limits for key deleterious substances and mandating an Environmental Effects Monitoring program to confirm the receiving environment is actually protected. The operator must design, build and operate a treatment system capable of meeting the limits, self-monitor continuously, and report to Environment and Climate Change Canada; engineering staff are responsible for the treatment plant design and the EEM sampling program. The federal government inspects, audits EEM cycles and can prosecute under the Fisheries Act, which carries some of the most severe penalties in Canadian environmental law, including significant fines and personal liability for corporate officers. |
| Instrument | Role, operator responsibilities, and enforcement mechanism |
|---|---|
| Canadian Dam Association (CDA) – Dam Safety Guidelines | A voluntary technical guideline (not a statute) that classifies dams, including tailings dams, into consequence-of-failure categories and specifies the corresponding design flood and design earthquake return periods, inspection frequency, and interval for an independent Dam Safety Review (Question 1.2). The operator's Engineer of Record is responsible for the dam safety management system and OMS manual; there is no CDA enforcement mechanism, but most provincial mines regulators now incorporate the CDA guidelines by reference into permit conditions, giving them the practical force of law even though the document remains voluntary. |
| Mining Association of Canada (MAC) – Towards Sustainable Mining (TSM) Tailings Working Group | A voluntary, MAC-member-mandatory framework whose Tailings Management Protocol requires each facility to name an accountable executive, maintain an OMS manual, conduct regular dam safety inspections, and publicly self-assess and report performance, verified by an independent third-party audit every three years. The operator implements the protocol and its engineering staff execute the OMS program day to day; MAC administers verification and publishes results, but its only real sanction for non-conformance is reputational and membership-based. |
| International Cyanide Management Code for the Gold Mining Industry | A voluntary certification program for gold operations using cyanide in processing, covering the full cycle from production and transport through on-site use to decommissioning, requiring an independent triennial audit with public certification results. The operator commits corporately and funds the audits; engineering staff implement the cyanide management plan, including worst-case-discharge tank design and spill contingency planning. The International Cyanide Management Institute administers certification (and can suspend or revoke it) but has no government enforcement power, though certification is frequently a practical precondition for project financing, insurance and permitting. |
| International Council on Mining and Metals (ICMM) | A CEO-led industry association whose member companies commit to ten Mining Principles and associated performance expectations covering environmental and social risk management, closure planning, and (jointly with UNEP and PRI, following Brumadinho) co-authored the Global Industry Standard on Tailings Management. Member company engineering/sustainability staff must implement conformance systems and undergo independent assurance against the Mining Principles; ICMM itself has no regulatory power, but can suspend membership for non-conformance, and its standards are increasingly referenced by lenders and investors as a due-diligence benchmark. |
| International Network for Acid Prevention (INAP) – Global Acid Rock Drainage (GARD) Guide | A freely-available, continuously-updated technical guidance document (not a certification scheme) covering ARD/metal leaching prediction, prevention, mitigation and treatment across the full mine lifecycle, referenced throughout Questions 2 and 5 of this exam. Mine engineering and environmental staff use it as the primary technical reference for designing ABA/kinetic testing programs, waste rock encapsulation strategies, and water treatment systems; INAP (an association of major mining companies) funds and maintains the guide but has no enforcement role – its influence is as the de facto technical standard that regulators and independent reviewers measure a proponent's ARD management plan against. |
