ZIP 89404 (Denio, NV) — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
ZIP code 89404 in Denio, Nevada (Humboldt County) has 4 EPA-tracked facilities, including 0 High-Risk sites (0.0%), 0 active violators, and $0 in federal penalties. Beyond industrial pollution, properties in ZIP 89404 are screened across 20 historical Humboldt County FEMA disasters, USDA Soil Foundation Shrink-Swell (MODERATE signal), Tap Water & Watershed Permits (2), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
ZIP 89404 (Denio, NV) 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 ZIP 89404 (Denio, NV) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)ZIP 89404 Sector Screening Map (High-Risk Pin Coordinates Locked)
Exact street pins for 0 High-Risk and 0 Active Violation sites are redacted on public directory maps.
Regulated EPA Facilities in ZIP 89404 (Denio, NV)
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 Score (0–100) | Compliance Status | Enforcement / Unlock |
|---|---|---|---|---|
| SBC FREE PREVIEW (LOW RISK) | 90MI NW WINNEMUCCA, DENIO, NV 89404 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| ASHDOWN MINE FREE PREVIEW (LOW RISK) | 12 MILES S OF DENIO JUNCTION, DENIO, NV 89404 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| NDOT QUINN RIVER - WATER SYTEM IMPROVEMENTS FREE PREVIEW (LOW RISK) | QUINN RIVER SR140, HUMBOLDT COUNTY, NV 89404 | LOW (12/100) | No Violation Identified (0 qtrs NC) | $0 |
| ASHDOWN PROJECT LLC FREE PREVIEW (LOW RISK) | 1 ALDER CREEK RD, DENIO, NV 89404 | LOW (11/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — ZIP 89404 (Denio, NV) EPA Dataset & Radon
DATASET: U.S. EPA ECHO • FRS • RCRAInfo • TRI (November 01, 2026)How many EPA-tracked environmental sites are in ZIP code 89404 (Denio, NV)?
ZIP code 89404 (Denio, NV) contains 4 EPA-tracked facilities, of which 0 (0.0%) are classified in the High-Risk tier, 0 (0.0%) have active compliance violations, and 2 (50.0%) handle RCRA hazardous waste.
How does ZIP 89404 compare to Humboldt County and Nevada averages?
In ZIP 89404, 0.0% of regulated sites are rated High Risk, compared to 5.1% across Humboldt County and 1.0% statewide in Nevada.
What is the EPA Radon Zone and ASTM Phase I screening radius for ZIP 89404?
Geologic screening places ZIP 89404 in EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L). Property buyers should screen a 0.25-mile immediate buffer for vapor-intrusion sources and a 1.0-mile radius for CERCLA/RCRA sites.
Is ZIP 89404 (Denio, NV) in a FEMA flood zone and what is the flood disaster history?
Humboldt County has recorded 20 historical FEMA federal disaster declarations (1 flood, hurricane, or severe storm declarations). Run a street address scan in ZIP 89404 to unlock the exact parcel FEMA flood zone (AE / VE / X) and mandatory flood insurance status.
Does ZIP 89404 have expansive clay soil, foundation problems, or drinking water violations?
USDA regional soil screening for ZIP 89404 indicates a MODERATE shrink-swell risk signal. Within ZIP 89404, federal registries track 0 SDWIS drinking water facilities, 2 Clean Water NPDES permits, and 0 impaired water body dischargers. Unlock a full property report for exact soil LEP %, water table depth, and utility violation dockets.