Yukon-Koyukuk (Ca) County, Alaska — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Yukon-Koyukuk (Ca) County, AK?
In Yukon-Koyukuk (Ca) County, Alaska, public U.S. EPA records track 306 regulated facilities (#9 of 66 in Alaska), including 4 (1.3%) High-Risk sites and $31,673 in federal penalties. Countywide due diligence also covers 0 Safe Drinking Water (SDWIS) facilities, 306 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 (Ca) 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 (Ca) County, AK Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Yukon-Koyukuk (Ca) County
ZIP Codes in Yukon-Koyukuk (Ca) County
Top EPA Regulated Facilities in Yukon-Koyukuk (Ca) 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 • RAMPART, AK (ZIP 99767 Sector) | HIGH (64/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • CENTRAL, AK (ZIP 99730 Sector) | MODERATE (45/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • CENTRAL, AK (ZIP 99730 Sector) | MODERATE (44/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • CENTRAL, AK (ZIP 99730 Sector) | MODERATE (44/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • CENTRAL, AK (ZIP 99730 Sector) | MODERATE (44/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • CENTRAL, AK (ZIP 99730 Sector) | MODERATE (44/100) | Violation Identified (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • CENTRAL, AK (ZIP 99730 Sector) | MODERATE (42/100) | Violation Identified (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • CENTRAL, AK (ZIP 99730 Sector) | MODERATE (42/100) | Violation Identified (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
Frequently Asked Questions — Yukon-Koyukuk (Ca) County, Alaska Environmental Due Diligence
How many EPA-regulated environmental sites are in Yukon-Koyukuk (Ca) County, Alaska?
Public U.S. EPA records track 306 regulated facilities in Yukon-Koyukuk (Ca) County, Alaska (ranking #9 of 66 jurisdictions in AK). Of those, 4 (1.3%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 60 (19.6%) have active non-compliance quarters.
Which ZIP codes and cities in Yukon-Koyukuk (Ca) County have the highest regulated facility density?
Within Yukon-Koyukuk (Ca) County, the highest concentrations of EPA-tracked facilities are located in ZIP 99730 (Central, 94 sites), ZIP 99726 (Bettles, 40 sites), ZIP 99557 (Aniak, 39 sites), spanning municipal corridors including Central (92 sites), Aniak (37 sites), Bettles (30 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Yukon-Koyukuk (Ca) County?
Across Yukon-Koyukuk (Ca) County, 0 facilities (0.0% 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 (Ca) County, AK?
Geologic indoor air screening places Yukon-Koyukuk (Ca) 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 (Ca) County, AK?
Federal records track 0 Safe Drinking Water (SDWIS) facilities, 306 Clean Water Act NPDES permits, and 28 impaired water dischargers in Yukon-Koyukuk (Ca) County, alongside 4 historical FEMA federal disaster declarations (2 flood/storm events).
Does Yukon-Koyukuk (Ca) County, AK have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Yukon-Koyukuk (Ca) 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.