ZIP 98946 (Thorp, WA) — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
ZIP code 98946 in Thorp, Washington (Kittitas County) has 8 EPA-tracked facilities, including 1 High-Risk sites (12.5%), 1 active violators, and $0 in federal penalties. Beyond industrial pollution, properties in ZIP 98946 are screened across 3 historical Kittitas County FEMA disasters, USDA Soil Foundation Shrink-Swell (MODERATE signal), Tap Water & Watershed Permits (3), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
ZIP 98946 (Thorp, WA) 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 ZIP 98946 (Thorp, WA) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 01, 2026)ZIP 98946 Sector Screening Map (High-Risk Pin Coordinates Locked)
Exact street pins for 1 High-Risk and 1 Active Violation sites are redacted on public directory maps.
Regulated EPA Facilities in ZIP 98946 (Thorp, WA)
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 |
|---|---|---|---|---|
| 🔒 Locked High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • THORP, WA (ZIP 98946 Sector) | HIGH (64/100) | Significant Violation (5 qtrs NC) | 🔒 5 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • THORP, WA (ZIP 98946 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • THORP, WA (ZIP 98946 Sector) | MODERATE (30/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| PSE THORP STORAGE YARD FREE PREVIEW (LOW RISK) | THORP HWY E SIDE 1 MI N OF I90, THORP, WA 98946 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| KITTITAS COUNTY PUBLIC WORKS YAKIMA RIVER BRIDGE 97341 FREE PREVIEW (LOW RISK) | N THORP HWY, THORP, WA 98946 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| PSE KITTITAS SERV CTR FREE PREVIEW (LOW RISK) | 8400 THORP HWY S, THORP, WA 98946 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| LITTLE NACHES RIVER AND FLOODPLAIN RESTORATION, RM 3.3-4.3 FREE PREVIEW (LOW RISK) | LONGMIRE MEADOWS, THORP, WA 98946 | LOW (13/100) | No Violation Identified (0 qtrs NC) | $0 |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • THORP, WA (ZIP 98946 Sector) | LOW (11/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
Frequently Asked Questions — ZIP 98946 (Thorp, WA) EPA Dataset & Radon
DATASET: U.S. EPA ECHO • FRS • RCRAInfo • TRI (November 01, 2026)How many EPA-tracked environmental sites are in ZIP code 98946 (Thorp, WA)?
ZIP code 98946 (Thorp, WA) contains 8 EPA-tracked facilities, of which 1 (12.5%) are classified in the High-Risk tier, 1 (12.5%) have active compliance violations, and 5 (62.5%) handle RCRA hazardous waste.
How does ZIP 98946 compare to Kittitas County and Washington averages?
In ZIP 98946, 12.5% of regulated sites are rated High Risk, compared to 10.8% across Kittitas County and 5.2% statewide in Washington.
What is the EPA Radon Zone and ASTM Phase I screening radius for ZIP 98946?
Geologic screening places ZIP 98946 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 98946 (Thorp, WA) in a FEMA flood zone and what is the flood disaster history?
Kittitas County has recorded 3 historical FEMA federal disaster declarations (2 flood, hurricane, or severe storm declarations). Run a street address scan in ZIP 98946 to unlock the exact parcel FEMA flood zone (AE / VE / X) and mandatory flood insurance status.
Does ZIP 98946 have expansive clay soil, foundation problems, or drinking water violations?
USDA regional soil screening for ZIP 98946 indicates a MODERATE shrink-swell risk signal. Within ZIP 98946, federal registries track 0 SDWIS drinking water facilities, 3 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.