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 2 regulated facilities (#84 of 84 in Alaska), including 0 (0.0%) High-Risk sites and $0 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 0 Clean Water NPDES permits, 1 FEMA Federal Disaster Declarations (1 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 05, 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 |
|---|---|---|---|---|
| ALYESKA TAPS OPERATION MATERIAL SITE 79-2, OMS 79-2 FREE PREVIEW (LOW RISK) | MP 64.7 DALTON HIGHWAY MP 64.7, STEVENS VILLAGE, AK 99774 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| DOUBLE EAGLE FREE PREVIEW (LOW RISK) | PORTAGE CREEK, T7N R14E S34, CENTRAL, AK 99730 | LOW (8/100) | 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 Census Area County, Alaska?
Public U.S. EPA records track 2 regulated facilities in Yukon Koyukuk Census Area County, Alaska (ranking #84 of 84 jurisdictions in AK). Of those, 0 (0.0%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 0 (0.0%) have active non-compliance quarters.
Which ZIP codes and cities in Yukon Koyukuk Census Area County have the highest regulated facility density?
Within Yukon Koyukuk Census Area County, the highest concentrations of EPA-tracked facilities are located in local postal sectors, spanning municipal corridors including Yukon Koyukuk Census Area.
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Yukon Koyukuk Census Area County?
Across Yukon Koyukuk Census Area County, 1 facilities (50.0% 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 Census Area County, AK?
Geologic indoor air screening places Yukon Koyukuk Census Area 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 Census Area County, AK?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 0 Clean Water Act NPDES permits, and 0 impaired water dischargers in Yukon Koyukuk Census Area County, alongside 1 historical FEMA federal disaster declarations (1 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.