ZIP 93546 (Mammoth Lakes, CA) — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
ZIP code 93546 in Mammoth Lakes, California (Mono County) has 135 EPA-tracked facilities, including 1 High-Risk sites (0.7%), 2 active violators, and $0 in federal penalties. Beyond industrial pollution, properties in ZIP 93546 are screened across 3 historical Mono County FEMA disasters, USDA Soil Foundation Shrink-Swell (LOW signal), Tap Water & Watershed Permits (42), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
ZIP 93546 (Mammoth Lakes, CA) 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 ZIP 93546 (Mammoth Lakes, CA) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 02, 2026)ZIP 93546 Sector Screening Map (High-Risk Pin Coordinates Locked)
Exact street pins for 1 High-Risk and 2 Active Violation sites are redacted on public directory maps.
Regulated EPA Facilities in ZIP 93546 (Mammoth Lakes, CA)
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 Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • MAMMOTH LAKES, CA (ZIP 93546 Sector) | MODERATE (43/100) | Violation Identified (8 qtrs NC) | 🔒 8 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • MAMMOTH LAKES, CA (ZIP 93546 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • MAMMOTH LAKES, CA (ZIP 93546 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • MAMMOTH LAKES, CA (ZIP 93546 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • MAMMOTH LAKES, CA (ZIP 93546 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • MAMMOTH LAKES, CA (ZIP 93546 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • MAMMOTH LAKES, CA (ZIP 93546 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • MAMMOTH LAKES, CA (ZIP 93546 Sector) | MODERATE (33/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 7/11 MATERIALS INC FREE PREVIEW (LOW RISK) | 198 COMMERCE DR, MAMMOTH LAKES, CA 93546 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
| MAMMOTH HOSPITAL FREE PREVIEW (LOW RISK) | 85 SIERRA PARK ROAD, MAMMOTH LAKES, CA 93546 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
| NEW CINGULAR WIRELESS PCS LLC FREE PREVIEW (LOW RISK) | 396 HILTON CREEK HOSTEL RD, MAMMOTH LAKES, CA 93546 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| AMP UNITED FREE PREVIEW (LOW RISK) | 23 JUNIPER RD, MAMMOTH LAKES, CA 93546 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — ZIP 93546 (Mammoth Lakes, CA) EPA Dataset & Radon
DATASET: U.S. EPA ECHO • FRS • RCRAInfo • TRI (November 02, 2026)How many EPA-tracked environmental sites are in ZIP code 93546 (Mammoth Lakes, CA)?
ZIP code 93546 (Mammoth Lakes, CA) contains 135 EPA-tracked facilities, of which 1 (0.7%) are classified in the High-Risk tier, 2 (1.5%) have active compliance violations, and 95 (70.4%) handle RCRA hazardous waste.
How does ZIP 93546 compare to Mono County and California averages?
In ZIP 93546, 0.7% of regulated sites are rated High Risk, compared to 2.5% across Mono County and 0.3% statewide in California.
What is the EPA Radon Zone and ASTM Phase I screening radius for ZIP 93546?
Geologic screening places ZIP 93546 in EPA Zone 1 — High Potential (> 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 93546 (Mammoth Lakes, CA) in a FEMA flood zone and what is the flood disaster history?
Mono County has recorded 3 historical FEMA federal disaster declarations (3 flood, hurricane, or severe storm declarations). Run a street address scan in ZIP 93546 to unlock the exact parcel FEMA flood zone (AE / VE / X) and mandatory flood insurance status.
Does ZIP 93546 have expansive clay soil, foundation problems, or drinking water violations?
USDA regional soil screening for ZIP 93546 indicates a LOW shrink-swell risk signal. Within ZIP 93546, federal registries track 2 SDWIS drinking water facilities, 40 Clean Water NPDES permits, and 7 impaired water body dischargers. Unlock a full property report for exact soil LEP %, water table depth, and utility violation dockets.