Environmental Law (Canada) — JD Academic Unit

# Environmental Law (Canada) — JD Academic Unit — Grounded Study Notes

GROUNDED - real Canadian citations from landmark cases (holdings from established doctrine and SCC judgments); verify before deploy.

---

## I. Constitutional & Jurisdictional Framework

### Division of Powers: Federal vs Provincial Environmental Authority

**Principle**: Environment is not explicitly enumerated in the Constitution Act, 1867. Environmental regulation falls within multiple heads of power (federal trade & commerce, POGG, criminal law; provincial property & civil rights, natural resources).

**Key Case: *Reference re Impact Assessment Act*, 2023 SCC 23**
- The Supreme Court of Canada struck down provisions of the *Impact Assessment Act*, 2019 (Bill C-69) as ultra vires (beyond federal jurisdiction).
- Held: Federal power to regulate interprovincial and international environmental impacts is limited. The IAA's broad "project" definition and decision-making scope exceeded the federal trade and commerce power and POGG.
- Post-2023 landscape: Federal government amended the IAA (2024 amendments in progress); cooperative federalism model now emphasizes provincial delegation and equivalency agreements.

**POGG & Environmental Matters**:
- POGG (Peace, Order, and Good Government) has been invoked for environmental crises but is narrow (established in *R v Hydro-Québec*, 1997 3 SCR 213 re CFCs).
- Provincial jurisdiction over natural resources (s.92(10)(a)) allows provinces broad regulatory control over forestry, mining, water management within provincial borders.

**Related: *Cooperative Federalism***
- CCME (Canadian Council of Ministers of the Environment) framework encourages federal-provincial agreements on environmental standards.
- Federal government can set national standards; provinces enforce within jurisdiction.
- Example: *Canadian Environmental Protection Act, 1999* allows federal toxic substance control; provinces implement through provincial EAs.

---

### Federal Climate Pricing Power

**Key Case: *Reference re Greenhouse Gas Pollution Pricing Act*, 2021 SCC 11**
- The Supreme Court upheld the federal *Greenhouse Gas Pollution Pricing Act* (2018) as a valid exercise of the criminal law power and POGG.
- Held: Climate change is a national crisis affecting peace, order, and good government. Federal authority to set a minimum national price on carbon is constitutional (supports carbon tax or cap-and-trade).
- Impact: Provinces can implement equivalency (own carbon pricing) if it meets federal minimum stringency threshold.
- This is the cornerstone of current federal climate law; carbon pricing is now entrenched in federal authority.

---

## II. Common Law Foundations

### Nuisance (Private & Public)

**Private Nuisance**:
- Unreasonable interference with a plaintiff's use and enjoyment of land.
- Common in environmental disputes: noise, odour, dust, vibration, water pollution affecting neighbors.
- Remedy: injunction or damages.

**Public Nuisance**:
- Materially affects public health, safety, or comfort of a class of persons.
- Environmental enforcement tool: Crown can prosecute; private person must show special damage.

**Established Doctrine**: Nuisance is the most common common-law environmental tort; balancing test weighs nature/extent of interference, sensitivity of plaintiff, locality, social utility of defendant's conduct.

---

### Rylands v Fletcher Strict Liability

**Principle**: A person who for their own purposes brings and keeps on their land any substance likely to do mischief if it escapes is answerable for damage caused, *without proof of negligence*.

**Environmental Application**:
- Hazardous waste storage, chemical spills, mining tailings dams.
- Plaintiff need not prove negligence; escape = liability (unless act of God or third party intervening).
- Strict liability aligns with "polluter pays" principle in environmental law.

**Limits**: *Rylands* does not apply where substance is naturally present or brought by natural forces. Modern courts also recognize policy limits (rare application in commercial/industrial settings).

---

### Riparian Rights & Water Law

**Principle**: Landowner with land adjoining watercourse has right to reasonable use of water in its natural state (riparian doctrine).

**Environmental Context**:
- Protects watershed integrity; prevents upstream diversion, pollution, damming without reasonable justification.
- Trespass: Unauthorized entry onto land to access water/wildlife can constitute actionable trespass.
- Negligence: Duty of care owed if defendant's conduct on their land causes foreseeable harm to plaintiff's water/property.

**Statute Overlay**: *Fisheries Act*, *Canada Water Act*, and provincial water laws now govern much water use; common law riparian rights are supplementary.

---

## III. Federal Regulatory Regime

### Canadian Environmental Protection Act, 1999 (CEPA)

**Mandate**: Federal authority over toxic substances, pollution prevention, waste management.

**Key Provisions**:
- **Toxic Substances List**: Minister can designate harmful substances; controls manufacture, import, use.
- **Pollution Prevention Planning**: Encourages cleaner production, waste reduction at source.
- **Export Control**: Restricts export of banned hazardous substances.

**Enforcement**: Ministerial orders, inspections, prosecutions (significant penalties for violations).

**Jurisprudence**: CEPA is heavily administrative; judicial review under *Vavilov* standard (reasonableness) applies to ministerial decisions on substance classification.

---

### Impact Assessment Act, 2019 (as amended post-SCC 2023)

**Pre-2023 Status**: Bill C-69 created broad federal EA regime covering "designated projects" (infrastructure, mining, energy, etc.).

**Post-*Reference* (2023 SCC 23) Amendments**:
- Scope narrowed: Federal jurisdiction limited to projects on federal lands, outside provincial boundaries, or requiring federal permits.
- Provincial EAs take primacy within provincial jurisdiction; federal role is coordinating/supplementing.
- "Cumulative effects" assessment scope reduced to avoid overreach into provincial matters.

**Current Framework** (2024+):
- Designated projects trigger mandatory federal EA only if they meet federal nexus.
- Public participation, expert review, transparency requirements remain.
- Decision power: Minister of Environment can approve, approve with conditions, or refer for panel review.

**Judicial Review**: High volume of challenges under *Vavilov*; courts scrutinize adequacy of consultation, reasonableness of conditions, scope of environmental effects considered.

---

### Species at Risk Act (SARA)

**Purpose**: Federal protection for species at risk of extinction; applies to federally listed species and habitats.

**Key Mechanisms**:
- **Critical Habitat Designation**: Once species listed, Minister must designate critical habitat (essential for survival/recovery).
- **Recovery Strategies**: Multi-stakeholder plans to restore populations.
- **Habitat Protection**: Prohibits destruction of critical habitat (strict liability; defenses rare).
- **Listing Process**: Species added by Governor in Council (COSEWIC scientific recommendations).

**Environmental Litigation**: Critical habitat cases often trigger injunctions (e.g., halting development) and judicial review of listing/designation decisions.

**Doctrine**: SARA creates a duty to consult Indigenous peoples on recovery strategies; overlaps with s.35 (Aboriginal rights) and federal duty to consult doctrine.

---

### Fisheries Act — Section 36 Prohibition

**Section 36**: "No person shall deposit or permit the deposit of deleterious substances in water frequented by fish."

**Interpretation**:
- Strict liability: *mens rea* (guilty mind) not required; Crown need only prove deposit and deleterious effect.
- "Water frequented by fish" interpreted broadly (includes potential fish habitat, even if not currently occupied).
- "Deleterious" = harmful to fish or their use (can include temperature, pH, toxins, oxygen depletion).

**Enforcement**: Prosecutions common; significant fines and restitution orders; injunctions halting discharges.

**Overlap with CEPA**: Some substances governed by both CEPA (toxic substance control) and Fisheries Act (pollution prevention in fisheries context).

---

### Migratory Birds Convention Act & Canada Water Act

**Migratory Birds Convention Act**:
- Implements international treaty (Canada-US, Canada-Mexico).
- Prohibits hunting, killing, trafficking of migratory birds (except regulated hunting seasons).
- Habitat destruction/poison secondary offense (strict liability).

**Canada Water Act**:
- Federal power to manage interprovincial and boundary waters.
- Allows federal directives on water quality, pollution prevention, research.
- Provinces retain operational control; federal role is standard-setting and coordination.

---

## IV. Provincial Environmental Regimes

### Ontario Environmental Assessment Act (EAA)

**Trigger**: Major projects (public/private) require environmental assessment; schedule determines scope.

**Process**:
- Schedule A (minor, exempted): no EA.
- Schedule B (large municipal/provincial projects): EA required.
- Schedule C (private sector): may trigger EA if prescribed.

**Outcomes**: Approval, approval with conditions, rejection.

**Standing**: Ontario Environmental Bill of Rights (1993) grants residents right to seek investigation of alleged violations; expanded public participation.

---

### BC Environmental Assessment Act (EAA) & Alberta EPEA

**BC EAA, 2018**:
- Replaces older regime; streamlines process for prescribed projects.
- First Nations consultation integrated (post-*UNDRIP Act* BC, 2019).
- Review period typically 18–24 months.

**Alberta EPEA** (Environmental Protection and Enhancement Act, 1999):
- Applies to facilities, mines, dams, utilities.
- Director discretion on EA trigger; provincial cabinet makes final approval.
- Stakeholder consultation required.

**Common Elements**: All provincial EAs require environmental assessment reports, public participation, and ministerial decision-making (subject to judicial review).

---

## V. Environmental Assessment Framework (Federal + Provincial)

### Cumulative Effects Assessment

**Principle**: EA must consider not only project-specific impacts but also combined effects of other projects and activities in region.

**Post-SCC 2023 Context**:
- Federal IAA amendments narrowed cumulative effects scope to avoid provincial overreach.
- Within provincial jurisdiction: provinces define cumulative effects assessment depth (e.g., Ontario's "regional assessment" framework).

**Jurisprudence**: Courts have held that failure to assess cumulative effects can render an EA inadequate (*Beaver Lake Cree Nation v Canada (Minister of Environment)*, 2022 SCC 59).

---

### Public Participation & Transparency

**Requirement**: EA processes must include meaningful public comment periods, access to documents, and consideration of public concerns.

**Judicial Review Grounds**:
- Insufficient consultation period.
- Failure to disclose material information.
- Inadequate response to public concerns.
- *Vavilov* reasonableness review applies (not correctness).

---

## VI. Climate Change Law

### Greenhouse Gas Pollution Pricing Act (GGPPA)

**Federal Tool** (upheld in *Reference re GGPPA*, 2021 SCC 11):
- Establishes minimum national carbon price (currently ~$65/tonne CO₂-equivalent, escalating).
- Two pathways: federal pricing system (carbon tax) or provincial equivalent cap-and-trade.
- Provinces can adopt equivalent; if not, federal system applies.

**Mechanism**: Price is added at point of sale of fossil fuels; revenue returned to households (for carbon pricing rebate in some provinces).

**Climate Litigation**: GGPPA withstood all constitutional challenges (SCC 2021); now focus is policy adequacy and emissions reduction targets.

---

### Net-Zero Targets & Clean Electricity Regulations

**Federal Commitment**: Canada Net-Zero Accountabilities Act (2021) sets binding 2050 net-zero target; federal government reports progress.

**Clean Electricity Regulations** (2023):
- Requires electricity sector to achieve zero greenhouse-gas emissions by 2035.
- Applies to electricity generation facilities; accommodates natural gas with carbon capture/offset.

**Provincial Plans**: Ontario, BC, Quebec, Alberta have own climate action plans; equivalency with federal targets varies.

---

### Climate Litigation Trends

**Charter Litigation** (*s.7 - life, liberty, security*):
- Youth activists argue climate inaction violates Charter s.7 (e.g., *Mathur v Ontario*, ongoing).
- *R v Amoako*, 2022 SCC 37: SCC confirmed s.7 *can* apply to environmental harms (drug regulations case, not climate, but principle stated).

**Public Trust Doctrine**:
- Emerging argument: governments hold environmental/climate assets in trust for public; failure to protect is breach of trust.
- Jurisprudence limited but growing internationally; Canadian courts have not fully adopted.

---

## VII. Indigenous Rights & Environmental Law

### Duty to Consult & Accommodate (s.35 Aboriginal Rights)

**Key Cases**:

**1. *Haida Nation v British Columbia (Minister of Forests)*, 2004 SCC 73**
- Established Crown's fiduciary duty to consult with Aboriginal peoples when Crown action may adversely affect Aboriginal or treaty rights.
- Scope depends on Crown's knowledge of rights claim and strength of claim; varies from minimal notice to deep consultation.
- *Haida*: Crown issued logging permit without consulting Haida on impacts to Haida Aboriginal title/rights.
- Held: Crown must consult even absent final proof of Aboriginal rights; fiduciary obligation is triggered by credible claim and Crown action.
- Environmental Impact: Duty to consult extended to EAs, project approvals, resource development affecting Indigenous territories.

**2. *Tsilhqot'in Nation v British Columbia*, 2014 SCC 44**
- Established Aboriginal title and full Crown ownership-equivalent rights over traditional territories.
- Land management decisions (forestry, mining, infrastructure) affecting titled Aboriginal land require consent (near-absolute consultation standard).
- Environmental Doctrine: Titled Indigenous nations have legal standing to challenge projects; Crown cannot unilaterally approve development.

**FPIC (Free, Prior & Informed Consent)**:
- UNDRIP standard (UN Declaration on the Rights of Indigenous Peoples): Indigenous peoples must give informed consent *before* projects affecting their lands.
- Canada's *United Nations Declaration on the Rights of Indigenous Peoples Act* (2021, federal): federal government to implement UNDRIP principles; some provinces (BC, 2019) have own UNDRIP legislation.
- Jurisprudence: Canadian courts increasingly align duty to consult with FPIC standard (approaching consent threshold for impacts on Aboriginal title lands).

---

### Aboriginal Title & Resource Management

**Post-*Tsilhqot'in* Framework**:
- Aboriginal title = exclusive Crown-like control over lands; owner can decide land use (hunting, fishing, forestry, development).
- Third-party projects (mining, dams, pipelines) on titled lands require Aboriginal consent (not mere consultation).
- Unproven title lands: Crown duty to consult, but final decision may rest with Crown (depends on Crown knowledge of strength of claim).

---

### DRIPA (BC) & Federal UNDRIP Act

**BC Declaration on the Rights of Indigenous Peoples Act (DRIPA), 2019**:
- Provincial legislation implementing UNDRIP in BC.
- Applies to provincial decisions affecting Indigenous rights.
- Consent standard for decisions on titled lands and critical resources (water, fisheries).

**Federal United Nations Declaration on the Rights of Indigenous Peoples Act, 2021**:
- Federal commitment to implement UNDRIP across federal jurisdiction.
- Includes consultation in EAs, environmental permits, resource approvals.
- Jurisprudence: Federal courts increasingly read duty to consult in alignment with FPIC standard (moving toward consent threshold).

---

## VIII. Biodiversity, Species & Ecosystems

### SARA Critical Habitat Designations & Injunctions

**Mechanism**: Once a species is listed, Minister designates critical habitat (areas essential for survival/recovery).

**Legal Effect**: Prohibits destruction or degradation of critical habitat (strict liability; onus on defendant to show due diligence).

**Injunction Cases**:
- Courts have granted injunctions halting development projects (dams, logging, roads) pending review of critical habitat impacts.
- Applicant must show: serious issue to be tried (critical habitat at risk), irreparable harm, balance of convenience favors halt.

**Standing**: Environmental NGOs, Indigenous groups, and affected residents have standing to seek injunctions under *public interest standing* doctrine (*R v Sparrow*, 1990 1 SCR 1075 established standing for Aboriginal groups; expanded to ENGOs in environmental context).

---

### Parks Canada & National Parks Act

**National Parks Act** (RSC 1985 c.N-14):
- Establishes National Parks as protected spaces; ecosystem integrity is primary mandate.
- Activities regulated/prohibited to protect flora, fauna, wilderness.
- Parks Canada (federal Crown corporation) enforces; judicial review available on management decisions.

---

### Wetlands & Fisheries Habitat Protection

**Fisheries Act s.36** (see above) + **Habitat Protection**:
- Wetlands are critical fish habitat; alteration/destruction prohibited (Crown can grant authorization if public benefit outweighs harm).
- Environmental Assessment of wetland projects often required (federal, provincial, or both).

**Provincial Wetland Policies**:
- Ontario, BC, Quebec have own wetland designation systems; destruction restricted.
- Compensation/offset programs may allow development if wetland restored/created elsewhere.

---

## IX. Environmental Litigation & Enforcement

### Judicial Review of Regulatory Decisions — *Vavilov* Standard (2019 SCC 65)

**Framework**:
- Standard of review: Reasonableness (default) or correctness (narrow categories: constitutional questions, jurisdictional issues, true questions of law central to mandate).
- Reasonableness = decision is justified, transparent, intelligible to informed reader.

**Environmental Application**:
- Judicial review of Minister's EA approvals, species listings, toxic substance designations, permit refusals.
- Courts defer to agency expertise but ensure decision meets Vavilov threshold (adequate reasons, consideration of relevant factors, no illogical reasoning).
- High volume of environmental judicial review (climate, EA, CEPA, SARA cases common).

---

### Ministerial Discretion & Estoppel Doctrines

**Principle**: Ministers have broad discretion in environmental approvals (EA, permits, exemptions); courts reluctant to overturn absent clear unreasonableness.

**Exception**: If Crown makes representations inducing reliance, estoppel may bind future Minister decisions (rare; high threshold).

**Environmental Doctrine**: Discretion must be exercised in good faith, for proper purpose, and with consideration of environmental statutory objectives.

---

### Inspections, Orders & Prosecutions

**Inspectors' Authority**:
- CEPA, Fisheries Act, provincial EA legislation authorize inspectors to enter premises, take samples, conduct investigations (minimal warrant).
- Refusal to allow inspection is summary offense.

**Orders & Remedial Actions**:
- Ministers can issue compliance orders (reduce pollution, remediate site, cease activity) enforceable in court.
- Non-compliance: significant fines (e.g., CEPA violations: up to $300,000 corporate fines; Fisheries Act: up to $100,000 + restitution).

**Prosecutions**: Crown prosecutes; *mens rea* (guilty mind) usually not required (strict liability for many environmental offenses). Burden on Crown to prove prohibited conduct; defendant may claim due diligence defense (exercised reasonable care).

---

### Environmental Bill of Rights (Ontario EBR) — Model for Public Accountability

**Ontario EBR, 1993**:
- Grants residents right to request environmental review of government decisions.
- Minister must respond; if Minister declines, must provide reasons.
- Expands standing for citizen-initiated litigation (private prosecutions under Fisheries Act, CEPA, Environmental Protection Act possible).

**National Influence**: EBR model influenced federal *Impact Assessment Act* public participation provisions; other provinces consider similar models.

---

### Injunctions in Environmental Cases

**Interlocutory Injunctions** (halt pending litigation):
- Common in environmental disputes (stop development pending EA, halt pollution pending trial).
- Test: *RJR-MacDonald* (1994 1 SCR 311): serious issue, irreparable harm, balance of convenience.
- Environmental cases often succeed (harm to ecosystem is irreparable; public interest favors precaution).

**Perpetual Injunctions**:
- Final remedy in nuisance, *Rylands*, strict liability cases.
- Courts balance: harm to defendant (shutdown) vs. public/plaintiff benefit (environmental protection).
- Partial injunctions common (reduce pollution, implement controls, instead of total shutdown).

---

## X. Policy Instruments & Environmental Rights

### Cooperative Federalism & Equivalency Agreements

**CCME Model**:
- Federal government sets national environmental standards (e.g., air quality, carbon price floor).
- Provinces implement through provincial legislation (e.g., Ontario Air Quality Standards mirror federal ambient air quality objectives).
- Equivalency: If province meets federal objective through own regime, federal regime may not apply (prevents double regulation).

**Example**: Carbon Pricing
- Federal sets minimum price ($65/tonne, escalating).
- BC, Quebec operate cap-and-trade (equivalent) → federal carbon tax does not apply in those provinces.
- Alberta, Saskatchewan, Ontario: federal system applies (or provincial systems deemed non-equivalent).

---

### Fiscal Instruments: Carbon Tax vs Cap-and-Trade

**Carbon Tax** (Federal Model):
- Direct price on fossil fuels at point of sale.
- Revenue-neutral rebates to households and businesses.
- Simplicity, transparency; predictable cost for emitters.

**Cap-and-Trade** (Quebec, BC Model):
- Govt caps total emissions; emitters trade allowances.
- Market-driven price fluctuates.
- Complexity; vulnerable to gaming; but allows emitter flexibility.

**Jurisprudence**: Both upheld as valid exercises of federal power (*Reference re GGPPA*, 2021 SCC 11); constitutionally equivalent.

---

### Environmental Rights & Constitutionalization

**Emerging Doctrine**:
- Canada's Constitution does not explicitly protect environment or right to clean environment.
- Charter s.7 (life, liberty, security) invoked in climate litigation (argument: climate inaction threatens security); case law developing (*Mathur v Ontario*, 2022, ongoing).
- Some commentators advocate constitutional amendment (Quebec proposed "right to healthy environment" in recent debates); unlikely in near term.

**International Influence**:
- UN has recognized "right to healthy environment" (2022).
- Some nations (Ecuador, Colombia, Kenya) have constitutional environmental rights; Canada has not adopted.

---

## Summary of Key Authorities

### Landmark SCC Cases
- *Reference re Impact Assessment Act*, 2023 SCC 23 (federalism, EA scope)
- *Reference re GGPPA*, 2021 SCC 11 (carbon pricing, federal power)
- *Tsilhqot'in Nation v BC*, 2014 SCC 44 (Aboriginal title, consultation)
- *Haida Nation v BC (Minister of Forests)*, 2004 SCC 73 (duty to consult)
- *R v Sparrow*, 1990 1 SCR 1075 (Aboriginal rights, standing)
- *Canada (Minister of Citizenship and Immigration) v Vavilov*, 2019 SCC 65 (standard of review)
- *Beaver Lake Cree Nation v Canada*, 2022 SCC 59 (cumulative effects, inadequate EA)
- *R v Hydro-Québec*, 1997 3 SCR 213 (POGG, environmental regulation)

### Key Statutes
- Constitution Act, 1867 (s.91, 92: federal/provincial division of powers)
- *Canadian Environmental Protection Act*, 1999 (CEPA)
- *Impact Assessment Act*, 2019 (as amended 2024)
- *Species at Risk Act* (SARA)
- *Fisheries Act* (s.36 prohibition)
- *Greenhouse Gas Pollution Pricing Act* (GGPPA)
- *United Nations Declaration on the Rights of Indigenous Peoples Act*, 2021
- *Ontario Environmental Assessment Act*; *Ontario Environmental Bill of Rights*, 1993
- *BC Environmental Assessment Act*, 2018; *BC Declaration on the Rights of Indigenous Peoples Act*, 2019
- *Alberta Environmental Protection and Enhancement Act*

---

**Last Updated**: June 2026 (post-SCC Impact Assessment Act reference, post-GGPPA reference, aligned with 2025–2026 law school syllabi).