SOVEREIGNANNUAL ENVIRONMENTAL QUALITY SUMMIT · JUNE 17–18, 2026 · WINDOW ROCK, AZ
The 14th Annual Sovereign Environmental Quality Summit convenes tribal officials, federal regulators, facility operators, and community health advocates to review FY 2025 enforcement data and publish the FY 2026 compliance calendar.
MONITORING STATIONS ACTIVE
Air · Water · Soil — Across 14 Tribal Land Districts
VIOLATIONS CITED — FY 2025
Extractive Industry Non-Compliance · Federal & Tribal Law
FACILITY COMPLIANCE RATE
Q4 2025 · Verified Against 40 CFR Part 131 Standards
Summit ProgrammeJune 17, 2026
Welcome & Tribal Authority Statement
Chairman Raymond Runningwater · Tribal Council Chairman · Sovereign Environmental Quality Authority
Attainment Status Across the Colorado River Basin
Dr. Maria Silvercloud, PhD · Senior Hydrologist · EPA Region 8 · 18 Years Field Experience
PM2.5 Mesa Ridgeline Sensor Network — 2025 Calibration Report
Thomas Eagleheart, P.E. · Lead Environmental Engineer · Sovereign EQA · QAPP Signatory
Active Violation Docket — Extractive Industry Review
Counsel Patricia Denetsosie, J.D. · Environmental Compliance Counsel · Tribal Law Specialist · 22 Years Practice
Residential Contamination Clusters — Proximity Risk Assessment
Dr. Angela Whitehorse, MPH · Community Health Director · Navajo Nation DOH · CDC PHAP Fellow
FY 2026 Compliance Calendar & Permit Deadline Publication
Director Samuel Begay · Compliance Director · Sovereign EQA · Former EPA Region 9
Field Station Tours · Working Group Sessions · Consent Order Review
Register for
the Summit
Attendance is how you remain informed and compliant. Facility operators with active permit obligations are strongly advised to attend the June 17 enforcement session.
June 10, 2026 · 17:00 MST
Late registration subject to approval by Compliance Director
Enforcement Actions& Policy Updates
Redrock Extraction Partners LLC
Mining Operations
Unauthorized discharge of process water exceeding selenium limits at Monitoring Station W-14. Third violation within 36-month window triggers enhanced scrutiny protocol.
Mesa Energy Corp — Unit 7
Natural Gas Processing
Consent order for excess VOC emissions during flaring operations. Corrective action plan submitted 01/12/2026. Verification inspection scheduled Q2 2026.
Canyon Minerals Inc.
Uranium Tailings
Legacy uranium tailings remediation under UMTRCA. Groundwater monitoring wells W-22 through W-28 show Ra-226 above EPA MCL. Quarterly sampling required.
Four Corners Power Station
Coal Combustion Residuals
CCR surface impoundment now in compliance with 40 CFR Part 257. Annual groundwater monitoring reports submitted on schedule. Next review: Q3 2026.
Tribal Water Quality Standards — Revised Antidegradation Policy
EPA finalized amendments requiring states and tribes to explicitly identify and protect Outstanding National Resource Waters within tribal territories.
Tribal Authorization for Hazardous Waste Program
Sovereign EQA receives interim authorization to administer RCRA subtitle C hazardous waste program on tribal lands, expanding enforcement jurisdiction.
Revised Annual PM2.5 Standard — 9 µg/m³
EPA's revised annual PM2.5 NAAQS takes effect. Three monitoring stations on tribal lands now indicate potential non-attainment. Redesignation analysis underway.
Download the
Draft Agenda
The 24-page draft agenda includes all session abstracts, speaker credentials, field station tour coordinates, and the preliminary FY 2026 compliance calendar. Distributed to registered interest parties only.