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Yamhill County, Oregon — Property Hazard, Flood Zone, Soil, Water & EPA Guide

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What Are the Flood, Soil Foundation & EPA Risks in Yamhill County, OR?

In Yamhill County, Oregon, public U.S. EPA records track 454 regulated facilities (#14 of 66 in Oregon), including 17 (3.7%) High-Risk sites and $1,502,877 in federal penalties. Countywide due diligence also covers 77 Safe Drinking Water (SDWIS) facilities, 284 Clean Water NPDES permits, 3 FEMA Federal Disaster Declarations (3 flood/storm), USDA Soil Foundation Shrink-Swell (MODERATE signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).

Total EPA Sites (#14/66)
454
High-Risk (3.7% vs 3.2% State)
17
Active Violators (7.5%)
34
Drinking & Clean Water
361
Federal Penalties
$1,502,877

Yamhill County, OR 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals

🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan
🌊 Flood Zone & FEMA Disaster History
3 County FEMA Declarations (3 Flood/Storm)
🔒 Exact Parcel Flood Zone (AE / VE / X) & SFHA Insurance Requirement Locked
Check Property Flood Zone →
🪨 USDA Soil, Foundation & Water Table
Shrink-Swell Risk Signal: MODERATE • Pipe Corrosion: High
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
77 SDWIS Systems • 284 NPDES Permits
🔒 222 Impaired Water (303d) & 71 Violation Dockets Locked
Unlock Utility Violation Log →
☢️ EPA Radon & Karst Sinkhole
EPA Zone 1 — High Potential (> 4.0 pCi/L)
Low / Non-Karst Bedrock & Alluvial Formation
🔒 0.25-Mi Vapor Intrusion Buffer Locked

📊 Yamhill County, OR Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)
1. County Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 197 (43.4%)
Clean Water (NPDES) & Drinking Water (SDWIS) 361 (79.5%)
Active EPA Non-Compliance Dockets 34 (7.5%)
High-Risk Enforcement Facilities 17 (3.7%)
2. FEMA NRI & USGS Hazard Index (1–10) Relatively Moderate (82.9/100)
🌊 Flood Exposure 5/10 • Moderate Hazard
🔥 Wildfire Hazard 1/10 • Very Low Hazard
☀️ Extreme Heat 5/10 • Moderate Hazard
🌪️ Severe Wind / Storm 3/10 • Low Hazard
🫨 USGS Earthquake 5/10 • Moderate Hazard
3. County vs. State & National Benchmark
Yamhill County High-Risk % 3.7%
Oregon (OR) Statewide Avg 3.2%
U.S. National EPA Baseline 3.6%
Unlock Street-Level Dossier: Full report reveals unredacted facility names, distances in feet, exact USDA soil LEP %, water table depth, and parcel flood zone.
🔒 Scan a Property Address in Yamhill County →

Top EPA Regulated Facilities in Yamhill County, OR

100% of High-Risk & penalized facilities have facility names, street names, and dockets redacted (3 Low-Risk compliant records shown as Free Previews).

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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 • SHERIDAN, OR (ZIP 97378 Sector) HIGH (96/100) Significant Violation (12 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • MCMINNVILLE, OR (ZIP 97128 Sector) HIGH (93/100) Significant Violation (12 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • NEWBERG, OR (ZIP 97132 Sector) HIGH (74/100) Significant Violation (1 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • AMITY, OR (ZIP 97101 Sector) HIGH (70/100) Significant Violation (11 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • MCMINNVILLE, OR (ZIP 97128 Sector) HIGH (68/100) Significant Violation (1 qtrs NC) 🔒 1 Qtrs Non-Compliance • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • MCMINNVILLE, OR (ZIP 97128 Sector) HIGH (67/100) Significant Violation (2 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • LAFAYETTE, OR (ZIP 97127 Sector) HIGH (64/100) Violation Identified (5 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • WILLAMINA, OR (ZIP 97396 Sector) HIGH (64/100) Significant Violation (10 qtrs NC) 🔒 10 Qtrs Non-Compliance • Unlock →
FRIENDSVIEW SPRINGBROOK MEADOWS II FREE PREVIEW (LOW RISK) PROVIDENCE DRIVE, NEWBERG, OR 97132 LOW (17/100) Unknown (0 qtrs NC) $0
GATEWAY FORD FREE PREVIEW (LOW RISK) 112 N MERIDIAN, NEWBERG, OR 97132 LOW (17/100) No Violation Identified (0 qtrs NC) $0
GEROME MANUFACTURING FREE PREVIEW (LOW RISK) 403 N MAIN ST, NEWBERG, OR 97132 LOW (16/100) No Violation Identified (0 qtrs NC) $0
CUSTOM DRY KILNS AND SAWMILL FREE PREVIEW (LOW RISK) 22000 SW ROCK CREEK RD, SHERIDAN, OR 97378 LOW (16/100) No Violation Identified (0 qtrs NC) $0
🔒 + 442 Additional Regulated & Enforcement Records in Yamhill County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Yamhill County, Oregon Environmental Due Diligence

How many EPA-regulated environmental sites are in Yamhill County, Oregon?

Public U.S. EPA records track 454 regulated facilities in Yamhill County, Oregon (ranking #14 of 66 jurisdictions in OR). Of those, 17 (3.7%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 34 (7.5%) have active non-compliance quarters.

Which ZIP codes and cities in Yamhill County have the highest regulated facility density?

Within Yamhill County, the highest concentrations of EPA-tracked facilities are located in ZIP 97128 (Mcminnville, 196 sites), ZIP 97114 (Dayton, 40 sites), ZIP 97378 (Sheridan, 32 sites), spanning municipal corridors including Mcminnville (195 sites), Dayton (38 sites), Sheridan (30 sites).

How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Yamhill County?

Across Yamhill County, 197 facilities (43.4% 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 Yamhill County, OR?

Geologic indoor air screening places Yamhill County in EPA Zone 1 — High Potential (> 4.0 pCi/L). Counties in EPA Radon Zone 1 have a predicted average indoor radon screening level greater than 4.0 pCi/L (the EPA action threshold). Short-term or continuous indoor radon testing is strongly recommended prior to closing.

How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Yamhill County, OR?

Federal records track 77 Safe Drinking Water (SDWIS) facilities, 284 Clean Water Act NPDES permits, and 222 impaired water dischargers in Yamhill County, alongside 3 historical FEMA federal disaster declarations (3 flood/storm events).

Does Yamhill County, OR have expansive clay soil or foundation risk?

USDA regional soil engineering screening for Yamhill County indicates a MODERATE 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.

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