Legal text appendix — Environment & Natural Resources

The legal chain that produces PA-3's environmental architecture, organized constitutional → federal → state → local. The federal substantive layer threads through the Clean Air Act, Clean Water Act, Safe Drinking Water Act plus LCRR/LCRI, CERCLA plus SARA plus the 2002 Brownfields Law plus the IRA-restored Superfund excise tax, RCRA Subtitle C, TSCA Title II plus Title IV plus AHERA, Title X HCDA, EPA RRP Rule, ESA, MBTA, CWA § 404, NEPA, and Civil Rights Act Title VI — currently operating under documented disruption at the GHG endangerment-finding rescission of February 2026, the federal EJ EO chain revocation of January 2025, the EPA ORD elimination of July 2025, and the EO 14260 "Protecting American Energy From State Overreach" of April 2025. The state layer threads through PA APCA, PA Clean Streams Law, PA SDWA, PA Act 2 of 1995, PA HSCA, PA Lead Paint Abatement Act, PA Conservation and Natural Resources Act, PA Game Code, the PA DEP Final EJ Policy effective January 3, 2026 with PennEnviroScreen and OEJ at Special Deputy Secretary level, and PA DCNR Tree Equity Specialist Program. The Philadelphia layer threads through Philadelphia Code Title 3 (Air Management Services), PAMS as state-delegated CAA authority, PWD architecture under the 2011 Green City Clean Waters COA, Philadelphia Lead Disclosure Law (Chapter 6-800), OOS EJ Division, and Philadelphia Parks & Recreation. For the analytical treatment of how each instrument operates and where its gaps fall, see the six D6 sub-domain pages.

Constitutional foundation

U.S. Constitution

Article I § 8 — Spending Clause and Commerce Clause (Cornell LII).
Spending Clause authorizes federal financial assistance to state and local environmental programs subject to federal program requirements; the constitutional basis for the entire D6 federal-floor architecture including CERCLA, EPA Brownfields, IIJA SDWA, HUD lead-hazard control grants, and the EJ executive-order chain (revoked January 2025). Commerce Clause authorizes federal regulation of interstate environmental commons including air quality (CAA), water (CWA, SDWA), and hazardous waste (RCRA); Commerce Clause is also the federal authority for wildlife regulation. Conditional-spending principles articulated in South Dakota v. Dole, 483 U.S. 203 (1987) govern state-plan submission requirements.
Cited in: every D6 sub-domain.

Article IV § 3 cl. 2 — Property Clause (Cornell LII).
Provides federal constitutional authority for federal land management — including USFWS administration of John Heinz NWR / Tinicum Marsh.
Cited in: Conservation, Public Lands & Wildlife.

10th Amendment (Cornell LII).
Reserves the underlying police power for environmental regulation with the states. PA's APCA, Clean Streams Law, SDWA, Act 2 of 1995, HSCA, Lead Paint Abatement Act, and Conservation and Natural Resources Act all rest on the 10th Amendment foundation.
Cited in: every D6 sub-domain.

14th Amendment § 1 — Equal Protection / Due Process (Cornell LII).
Grounds the civil-rights overlays on federally-funded environmental programs (Civil Rights Act Title VI). Operative for EJ enforcement architecture.
Cited in: EJ & Cumulative Burden.

Key foundational cases

Massachusetts v. EPA, 549 U.S. 497 (2007) (Justia).
Established that greenhouse gases are "air pollutants" subject to CAA regulation, compelling EPA's 2009 Endangerment Finding. The constitutional foundation for federal GHG regulation under the Clean Air Act — now substantially restructured by EPA's February 18, 2026 rescission of the 2009 Endangerment Finding (91 FR; Docket EPA-HQ-OAR-2025-0194; effective April 20, 2026); five distinct D.C. Circuit petitions for review pending plus 25-state intervenor coalition.
Cited in: Air Quality.

Sackett v. EPA, 598 U.S. 651 (2023) (Justia).
Narrowed the definition of "waters of the United States" under CWA § 404, reducing USACE wetlands jurisdiction to wetlands with a continuous surface connection to navigable waters. Isolated wetlands — including some urban marsh complexes — may be outside CWA § 404 jurisdiction under the post-Sackett standard.
Cited in: Conservation, Public Lands & Wildlife.

NFIB v. Sebelius, 567 U.S. 519 (2012); King v. Burwell, 576 U.S. 988 (2015); California v. Texas, 593 U.S. 659 (2021).
Preserved cooperative-federalism principles operative across federal environmental statutes implementing through state primacy programs.

American Hospital Association et al. v. Kennedy et al. D.C. Circuit (LCRI defense).
EPA filed Respondents' Brief defending the LCRI on February 20, 2026, arguing the rule "is lawful, reasonable, and should be upheld." Oral argument likely later in 2026.
Cited in: Water Quality and Drinking Water.

Massachusetts v. U.S. EPA, No. 26-1061 (D.C. Cir.).
24-state plus 15-local-government coalition petition for review of the GHG Endangerment Finding rescission, filed March 19, 2026; led by NY, MA, CA, CT AGs; PA Governor Shapiro among signatories.
Cited in: Air Quality.

Pennsylvania Constitution

Article I § 27 — Environmental Rights Amendment (ratified 1971).
"The people have a right to clean air, pure water, and to the preservation of the natural, scenic, historic and esthetic values of the environment. Pennsylvania's public natural resources are the common property of all the people, including generations yet to come. As trustee of these resources, the Commonwealth shall conserve and maintain them for the benefit of all the people." Interpreted in PA Environmental Defense Foundation v. Commonwealth, 161 A.3d 911 (Pa. 2017), to establish that the Commonwealth holds public natural resources as a trustee with corresponding fiduciary duties to current and future generations.
Cited in: every D6 sub-domain.

Federal statutory layer

Air quality

Clean Air Act (CAA). 42 U.S.C. § 7401 et seq.

  • Title I — NAAQS (42 U.S.C. §§ 7408-7409). Authorizes EPA to establish National Ambient Air Quality Standards for criteria pollutants (PM2.5 and PM10, ozone, NO₂, SO₂, CO, lead). Current PM2.5 primary annual NAAQS is 9 µg/m³ (revised February 2024; 40 CFR Part 50).
  • Title II — Mobile-source standards (42 U.S.C. § 7521 et seq.). Vehicle emission standards. Following the rescission of the 2009 GHG Endangerment Finding (final rule February 18, 2026; effective April 20, 2026), GHG vehicle standards promulgated since 2009 are repealed. Criteria-pollutant and HAP vehicle standards retained.
  • Title V — Operating permits (42 U.S.C. §§ 7661-7661f). 40 CFR Parts 70-71. Major stationary sources (≥100 tons per year of any regulated pollutant) must obtain Title V permits.
  • § 112 — NESHAPs (42 U.S.C. § 7412). National Emission Standards for Hazardous Air Pollutants.

Cited in: Air Quality.

Water quality and drinking water

Clean Water Act. 33 U.S.C. § 1251 et seq. NPDES permitting program (§ 402, 33 U.S.C. § 1342); CSO regulation through 1994 CSO Control Policy and Long-Term Control Plan framework (40 CFR Part 122 Subpart D); MS4 stormwater permits (40 CFR Part 122.26); CWA § 311 oil and hazardous-substance liability.

Safe Drinking Water Act. 42 U.S.C. § 300f et seq. National Primary Drinking Water Regulations (NPDWRs) for contaminants in public water systems.

  • Lead and Copper Rule (LCR, 1991) — action level 15 ppb at 90th percentile tap sample.
  • Lead and Copper Rule Revisions (LCRR, 2021) — compliance date October 16, 2024; LSL inventory submissions; Tier 1 24-hour public notification.
  • Lead and Copper Rule Improvements (LCRI, 2024) — 89 FR 86418, finalized October 8, 2024. Compliance date November 1, 2027; mandatory full LSL replacement within 10 years (all lead and GRR lines replaced by November 1, 2037); action level reduced to 10 ppb. EPA Respondents' Brief defending the rule in AWWA v. EPA filed February 20, 2026.
  • PFAS MCLs — April 2024; PFOA and PFOS at 4 ppt. Water systems required to complete initial PFAS monitoring by 2027; MCL compliance required by 2029.

Cited in: Water Quality and Drinking Water.

Land and site remediation

CERCLA — Comprehensive Environmental Response, Compensation, and Liability Act (1980). 42 U.S.C. § 9601 et seq. National Priorities List (NPL) of highest-risk contaminated sites; strict, joint, and several retroactive liability; federal-lead cleanup through Superfund trust fund.

SARA — Superfund Amendments and Reauthorization Act (1986). 42 U.S.C. § 9601 et seq. Five-year CERCLA extension. SARA Title III (EPCRA) community-right-to-know architecture (Tier II reports; Toxics Release Inventory).

Brownfields Law — Small Business Liability Relief and Brownfields Revitalization Act (2002). 42 U.S.C. § 9628. EPA Brownfields program assessment grants (up to $500K/site), revolving loan fund grants (up to $1M for cleanup loans), cleanup grants (up to $500K/site).

RCRA Subtitle C. 42 U.S.C. §§ 6921-6939g. Hazardous waste generation, transportation, treatment, storage, and disposal. Generator standards (40 CFR Part 261) — Large Quantity Generators (LQGs, ≥1,000 kg/month).

IRA Superfund Excise Tax Restoration (2022). The Inflation Reduction Act of 2022 reinstated the federal Superfund excise tax (originally enacted 1980; expired 1995; reinstated effective January 1, 2023).

Cited in: Land and Site Remediation.

Built-environment environmental hazards

Title X — Residential Lead-Based Paint Hazard Reduction Act of 1992 (Housing and Community Development Act). 42 U.S.C. § 4851 et seq.

Toxic Substances Control Act (TSCA). 15 U.S.C. § 2601 et seq.

  • Title IV (15 U.S.C. § 2681 et seq.) — lead-based paint hazards.
  • Title II (15 U.S.C. § 2641 et seq.) — asbestos hazards in schools (cross-referenced to AHERA).

EPA Renovation, Repair, and Painting (RRP) Rule. 40 C.F.R. Part 745. EPA-certified lead-safe contractor requirement for pre-1978 housing and child-occupied facility renovation.

Asbestos Hazard Emergency Response Act (AHERA). 15 U.S.C. § 2641 et seq. (TSCA Title II). Requires local educational agencies to inspect for ACMs, develop management plans, and implement O&M programs; triennial re-inspections; annual notifications. SDP AHERA DOJ Deferred Prosecution Agreement filed June 26, 2025 — first U.S. school district criminally charged under AHERA; 8 counts; 31 buildings 2015-2023; 5-year judicial monitoring.

HUD Lead-Disclosure Rule. 24 C.F.R. Part 35. HUD-assisted housing lead-paint hazard evaluation and control.

Cited in: Built-Environment Environmental Hazards.

Environmental justice and civil rights

Civil Rights Act Title VI. 42 U.S.C. § 2000d et seq. Prohibits discrimination based on race, color, and national origin in programs and activities receiving federal financial assistance. EPA has administrative enforcement authority under Title VI.

EO 12898 (Clinton, February 11, 1994) — "Federal Actions to Address Environmental Justice in Minority Populations and Low-Income Populations" — revoked January 2025 by Trump EOs 14148/14151/14173. The 1994 foundation of federal EJ policy is no longer the operative federal architecture.

Trump EOs (January 20-21, 2025).

  • EO 14148 ("Unleashing American Energy," January 20, 2025).
  • EO 14151 ("Ending Radical And Wasteful Government DEI Programs And Preferencing," January 20, 2025).
  • EO 14173 ("Ending Illegal Discrimination And Restoring Merit-Based Opportunity," January 21, 2025).

Collectively revoked the historical federal EJ executive order chain. EPA implementation order: March 12, 2025.

EO 14260 "Protecting American Energy From State Overreach" (April 8, 2025; Federal Register 90 FR 15513 April 14, 2025). Directs Attorney General to identify and challenge state laws addressing "climate change," "environmental justice," or GHG emissions that burden energy development. Operative; no specific PA action as of May 2026.

Cited in: EJ & Cumulative Burden.

Conservation, public lands, and wildlife

Endangered Species Act (ESA). 16 U.S.C. § 1531 et seq. (1973). Take prohibition; § 7 federal agency consultation; critical habitat designations.

Migratory Bird Treaty Act (MBTA). 16 U.S.C. § 703 et seq. (1918). Protects approximately 300 species documented at John Heinz NWR / Tinicum Marsh.

Clean Water Act § 404. 33 U.S.C. § 1344. USACE jurisdiction over dredge-and-fill in waters of the United States. Post-Sackett v. EPA, 598 U.S. 651 (2023) narrowed WOTUS scope to wetlands with continuous surface connection to navigable waters.

National Environmental Policy Act (NEPA). 42 U.S.C. § 4321 et seq. (1969). Environmental Assessments; Environmental Impact Statements. Amended by Fiscal Responsibility Act of 2023 (FAST-41) — accelerated EIS timelines.

Section 4(f) of the Department of Transportation Act. 49 U.S.C. § 303. Requires DOT agencies to avoid using publicly owned parks unless no feasible alternative exists.

Cited in: Conservation, Public Lands & Wildlife.

Federal agencies

Centers for Environmental Protection — EPA.

  • EPA Region 3 (1650 Arch Street, Philadelphia, PA 19103). Federal oversight of CAA, CWA, SDWA, CERCLA implementation in PA.
  • EPA Office of Air and Radiation (OAR).
  • EPA Office of Research and Development (ORD) — formally eliminated effective July 2025 (announcement July 18, 2025); replaced by Office of Applied Science and Environmental Solutions (OASES) created September 22, 2025 (Administrator Zeldin memo); approximately 500 positions of ORD's 1,540 staff retained.
  • EPA Office of Enforcement and Compliance Assurance (OECA) — shifted enforcement emphasis beginning 2025; approximately 50 EJ-focused enforcement staff terminated August 2025.
  • EPA Office of Pollution Prevention and Toxics (OPPT).
  • EPA Office of Environmental Justice and External Civil Rights — substantially reduced August 2025; EJScreen offline.
  • EPA Brownfields Program (Office of Land and Emergency Management).
  • EPA Office of Water.

U.S. Fish and Wildlife Service (USFWS), Region 5. Administers John Heinz National Wildlife Refuge / Tinicum Marsh at 8601 Lindbergh Boulevard, Philadelphia, PA 19153.

USACE Philadelphia District. Administers CWA § 404 wetlands permitting in PA.

U.S. Department of Justice — Environmental Crimes Section. AHERA criminal enforcement. SDP AHERA DOJ DPA filed June 26, 2025: U.S. Attorney for the Eastern District of PA; DOJ Environmental Crimes Section; EPA Criminal Investigation Division.

HUD Office of Lead Hazard Control and Healthy Homes (OLHCHH). Administers HUD lead-hazard grant programs.

State statutory layer (Pennsylvania)

Air quality

Pennsylvania Air Pollution Control Act (APCA). 35 P.S. § 4001 et seq. Establishes state authority to regulate air quality; authorizes PA DEP to implement federal SIP requirements and delegate permitting to local agencies. 25 Pa. Code Chapters 121-145.

Water quality and drinking water

Pennsylvania Safe Drinking Water Act (PA SDWA). 35 P.S. § 721.1 et seq. PA DEP BSDW holds primacy.

Pennsylvania Clean Streams Law. 35 P.S. § 691.1 et seq. PA DEP administers CWA NPDES program. 25 Pa. Code Chapters 91-102.

Land and site remediation

PA Act 2 of 1995 — Land Recycling and Environmental Remediation Standards Act. 35 P.S. § 6026.101 et seq. Three remediation standards: Background Standard; Statewide Health Standard; Site-Specific Standard. PA DEP Bureau of Environmental Cleanup and Brownfields (BECB) administers. 25 Pa. Code Chapters 250-271.

PA Hazardous Sites Cleanup Act (HSCA). 35 P.S. § 6020.101 et seq. Independent state cleanup statute for sites outside NPL framework.

Built-environment hazards

PA Lead Paint Abatement Act. 35 P.S. § 5901 et seq. PA DEP licensing for lead abatement contractors. 25 Pa. Code Chapter 311 (lead) and Chapter 218 (asbestos).

PA Childhood Lead Surveillance Program. CDC reference value 3.5 µg/dL.

Conservation, public lands, and wildlife

Pennsylvania Conservation and Natural Resources Act. Title 32 Pennsylvania Consolidated Statutes. Establishes PA DCNR.

Pennsylvania Game Code. 34 Pa. C.S. PA Game Commission authority.

Pennsylvania Wild Resources Conservation Act.

Environmental justice

Pennsylvania does not have a freestanding EJ statute. The PA DEP Environmental Justice Policy operates as an administrative guidance document under PA DEP's APCA, Clean Streams Law, HSCA, and related statutory authorities. Final EJ Policy effective January 3, 2026 (DEP Doc. 015-0501-002; 56 Pa. Bull. 81); first update since 2004; retains core structure of September 2023 interim final policy with refinements. Not codified in PA law — administratively reversible without legislative action.

State agencies

Pennsylvania Department of Environmental Protection (PA DEP).

  • Bureau of Air Quality (BAQ). 400 Market Street, Harrisburg, PA 17105. Implements APCA; administers PA SIP; oversees local delegated programs (PAMS). PA DEP eFACTS database.
  • Bureau of Safe Drinking Water (BSDW). Administers PA SDWA primacy.
  • Bureau of Clean Water. Administers CWA NPDES permits.
  • Bureau of Environmental Cleanup and Brownfields (BECB). Administers PA Act 2 voluntary cleanup, HSCA enforcement.
  • Office of Environmental Justice (OEJ). Special Deputy Secretary level under Fernando Treviño. Administers PA DEP EJ Policy; develops enhanced public-participation protocols for major permit decisions in EJ Areas; coordinates PennEnviroScreen (32 indicators; EJ Areas = census block groups with score ≥80th percentile or highest 5% Pollution Burden Score).

Pennsylvania Environmental Quality Board (EQB).

Pennsylvania Department of Conservation and Natural Resources (PA DCNR).

  • Bureau of Forestry. Administers PA forestry policy.
  • Tree Equity Specialist Program (2021). Addresses urban heat island and park-access disparities in majority-minority communities including Philadelphia.

Pennsylvania Game Commission.

Pennsylvania Department of Health Childhood Lead Surveillance Program.

PENNVEST — Pennsylvania Infrastructure Investment Authority. Administers financing for environmental compliance projects; combination of EPA SRF grants and state bond proceeds.

Schuylkill Action Network. Watershed conservation initiative; coalition of 300+ partner organizations coordinated with EPA Region 3.

RISE PA — Reducing Industrial Sector Emissions in Pennsylvania. $267,825,172 announced April 28, 2026; $396 million statewide industrial decarbonization grant program funded through EPA's IRA Climate Pollution Reduction Grants. 31 manufacturing projects in 23 PA counties. PA DEP administers. Not primarily an EJ grant program.

Local layer

Philadelphia Home Rule Charter (1951)

Authorizes PWD to operate the City's water, wastewater, and stormwater systems as a City enterprise agency.

Philadelphia Code

Title 3, Chapter 3-100 — Air Management Services. Establishes the local regulatory framework for air quality within the City of Philadelphia. The Air Pollution Control Board (APCB) is the local governing body for AMS regulatory actions.

Title 6 — Health.

  • Chapter 6-800 — Philadelphia Lead Disclosure Law. Requires landlords of pre-1978 residential units to disclose lead hazard status and to test rental units occupied by children under age 6. Goes beyond federal Title X disclosure requirements by requiring testing (not just disclosure).

Title 15 — Parks and Recreation. Enables PPR to manage the City's 10,200-acre park system.

Philadelphia agencies and institutions

Philadelphia Air Management Services (PAMS). 321 University Avenue, 2nd Floor, Philadelphia, PA 19104 (within the Philadelphia Department of Public Health). Holds state-delegated CAA authority for permitting and enforcement within Philadelphia County. Acting Director: Kassahun Sellassie, Ph.D., PE. Complaint line: 215-685-7584.

Philadelphia Water Department (PWD). 1101 Market Street. Provides drinking water to approximately 1.5 million regional customers from the Schuylkill and Delaware Rivers via the Baxter, Queen Lane, and Belmont treatment plants. CWA NPDES permits; SDWA regulated party under PA DEP BSDW primacy; Green City Clean Waters COA (2011) plus EPA AOCC (2012); 164 CSO outfalls; 85% reduction target by 2036; nearly 3 billion gallons of stormwater and combined sewer overflow kept out of local waterways since 2011 with green stormwater infrastructure managing 9,500+ acres of impervious surface.

Philadelphia Department of Public Health (PDPH). 1101 Market Street.

  • Lead and Healthy Homes Program. Administers Philadelphia's childhood lead-poisoning prevention program; case management for elevated blood lead levels.

Philadelphia Office of Sustainability (OOS). Administers the City's climate action plan; hosts the Environmental Justice Division.

Philadelphia Parks & Recreation (PPR). 1515 Arch Street. Administers the City's 10,200-acre park system including Fairmount Park East+West, Wissahickon Valley Park, Pennypack, Cobbs Creek, FDR Park, and approximately 200 neighborhood parks.

Philadelphia Industrial Development Corporation (PIDC). Nonprofit development corporation co-sponsored by the City of Philadelphia and the Greater Philadelphia Chamber of Commerce. Administers the brownfields revolving loan fund concentrating on the Lower Schuylkill District.

School District of Philadelphia (SDP). AHERA-covered building stock. SDP AHERA DOJ Deferred Prosecution Agreement filed June 26, 2025 — 8 criminal counts; 31 buildings; 5-year judicial monitoring; SDP environmental management budget $10.2M FY 2021 → $55.7M FY 2025; staff 21 → 39; all 300+ buildings now inspected twice/year; Penn $100M contribution to SDP environmental management; Frankford High closed for $20M asbestos remediation.

PA-3 anchor institutions (D6-Q2 PRIMARY HOM at SD4)

Five anchor institutions appear simultaneously at the D6-Q2 mechanism inventory across air (SD1 Title V), hazardous waste (SD3 RCRA Subtitle C generator status), and built-environment hazards (SD4 AHERA/lead/asbestos):

  • Penn / Penn Medicine (West Philadelphia).
  • Temple / Temple Health (North Philadelphia).
  • Drexel University (University City).
  • CHOP — Children's Hospital of Philadelphia (West Philadelphia).
  • Jefferson Health (Center City; expanded post-2021 Einstein merger).

D6 completes the five-dimensional anchor engagement framework: D7 (real estate) + D9 (fiscal) + D8 (procurement) + D10 (employment) + D6 (environmental compliance). The framework subsequently inherits at D21 SD4 G21-SD4-01 as the sixth dimension (healthcare delivery).

PA-3 conservation infrastructure

John Heinz National Wildlife Refuge / Tinicum Marsh. 8601 Lindbergh Boulevard, Philadelphia, PA 19153. 1,200 acres; established 1972 as America's First Urban National Wildlife Refuge; approximately 300 migratory and resident species; ~10 miles of trails with elevated boardwalks over tidal marsh. Freshwater tidal marsh — among the rarest ecosystem types in the mid-Atlantic.

Philadelphia Parks & Recreation (PPR) park system. 10,200 acres including Fairmount Park East+West, Wissahickon Valley Park (~2,000 acres of gorge woodland in Northwest), Pennypack Park, Cobbs Creek Park, FDR Park (348 acres in South Philadelphia adjacent to Navy Yard area), and approximately 200 neighborhood parks.

PA-3 NPL Superfund sites (3 active per MC-07)

Enterprise Avenue NPL site — North Philadelphia industrial legacy.

Metal Bank Superfund site — Philadelphia, Schuylkill River corridor.

Lower Darby Creek Area — Philadelphia County plus Delaware County, Southwest PA-3 boundary at Eastwick.