Yukon-Koyukuk County, Alaska — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Yukon-Koyukuk County, AK?
In Yukon-Koyukuk County, Alaska, public U.S. EPA records track 153 regulated facilities (#16 of 66 in Alaska), including 17 (11.1%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 57 Safe Drinking Water (SDWIS) facilities, 23 Clean Water NPDES permits, 4 FEMA Federal Disaster Declarations (2 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 3 — Low Potential (< 2.0 pCi/L).
Yukon-Koyukuk County, AK 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Yukon-Koyukuk County, AK Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)Municipalities in Yukon-Koyukuk County
ZIP Codes in Yukon-Koyukuk County
Top EPA Regulated Facilities in Yukon-Koyukuk County, AK
100% of High-Risk & penalized facilities have facility names, street names, and dockets redacted (3 Low-Risk compliant records shown as Free Previews).
| Facility Name / Hazard Type | Sector Location (Street Redacted) | Risk Tier & Score | Compliance Status | Enforcement / Unlock |
|---|---|---|---|---|
| 🔒 Locked High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • MCGRATH, AK (ZIP 99627 Sector) | HIGH (66/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • TANANA, AK (ZIP 99777 Sector) | HIGH (64/100) | Significant Violation (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • SHAGELUK, AK (ZIP 99665 Sector) | HIGH (64/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • TANANA, AK (ZIP 99777 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • ALLAKAKET, AK (ZIP 99720 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • FORT YUKON, AK (ZIP 99740 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • RUBY, AK (ZIP 99768 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • RAMPART, AK (ZIP 99767 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| ALYESKA PIPELINE SERVICE CO TAPS PUMP STATION 7 FREE PREVIEW (LOW RISK) | MILE 414.1, DALTON HIGHWAY, MINTO, AK 99758 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| USAF LRRS TATALINA FREE PREVIEW (LOW RISK) | STERLING LANDING RD, MCGRATH, AK 99627 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| ALASKA DOT & PF JIM RIVER MAINTENANCE STATION FREE PREVIEW (LOW RISK) | MILE 138.1 DALTON HWY, FAIRBANKS, AK 99701 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| RUBY MARINE INC FREE PREVIEW (LOW RISK) | 306 PARKS HIGHWAY, NENANA, AK 99760 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Yukon-Koyukuk County, Alaska Environmental Due Diligence
How many EPA-regulated environmental sites are in Yukon-Koyukuk County, Alaska?
Public U.S. EPA records track 153 regulated facilities in Yukon-Koyukuk County, Alaska (ranking #16 of 66 jurisdictions in AK). Of those, 17 (11.1%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 31 (20.3%) have active non-compliance quarters.
Which ZIP codes and cities in Yukon-Koyukuk County have the highest regulated facility density?
Within Yukon-Koyukuk County, the highest concentrations of EPA-tracked facilities are located in ZIP 99741 (Galena, 18 sites), ZIP 99740 (Fort Yukon, 13 sites), ZIP 99767 (Rampart, 12 sites), spanning municipal corridors including Galena (19 sites), Fort Yukon (12 sites), Rampart (10 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Yukon-Koyukuk County?
Across Yukon-Koyukuk County, 60 facilities (39.2% of regulated sites) are registered Resource Conservation and Recovery Act (RCRA) hazardous waste generators or handlers, and 0 industrial sites report toxic chemical releases to the EPA Toxics Release Inventory (TRI).
What is the EPA Radon Zone classification for Yukon-Koyukuk County, AK?
Geologic indoor air screening places Yukon-Koyukuk County in EPA Zone 3 — Low Potential (< 2.0 pCi/L). Counties in EPA Radon Zone 3 have a predicted average indoor radon level below 2.0 pCi/L, indicating lower regional geologic radon risk.
How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Yukon-Koyukuk County, AK?
Federal records track 57 Safe Drinking Water (SDWIS) facilities, 23 Clean Water Act NPDES permits, and 0 impaired water dischargers in Yukon-Koyukuk County, alongside 4 historical FEMA federal disaster declarations (2 flood/storm events).
Does Yukon-Koyukuk County, AK have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Yukon-Koyukuk County indicates a LOW shrink-swell risk signal and steel pipe corrosivity rated High. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.