ZIP 93656 (Riverdale, CA) — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
ZIP code 93656 in Riverdale, California (Fresno County) has 142 EPA-tracked facilities, including 2 High-Risk sites (1.4%), 2 active violators, and $1,000 in federal penalties. Beyond industrial pollution, properties in ZIP 93656 are screened across 4 historical Fresno County FEMA disasters, USDA Soil Foundation Shrink-Swell (HIGH signal), Tap Water & Watershed Permits (22), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
ZIP 93656 (Riverdale, 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 93656 (Riverdale, CA) Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 02, 2026)ZIP 93656 Sector Screening Map (High-Risk Pin Coordinates Locked)
Exact street pins for 2 High-Risk and 2 Active Violation sites are redacted on public directory maps.
Regulated EPA Facilities in ZIP 93656 (Riverdale, 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 High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • RIVERDALE, CA (ZIP 93656 Sector) | HIGH (71/100) | Significant Violation (12 qtrs NC) | 🔒 Federal Penalty on File • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • RIVERDALE, CA (ZIP 93656 Sector) | HIGH (67/100) | Significant Violation (12 qtrs NC) | 🔒 12 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • RIVERDALE, CA (ZIP 93656 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • RIVERDALE, CA (ZIP 93656 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • RIVERDALE, CA (ZIP 93656 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • RIVERDALE, CA (ZIP 93656 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • RIVERDALE, CA (ZIP 93656 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • RIVERDALE, CA (ZIP 93656 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| FRANK BROWN CO DAIRY FREE PREVIEW (LOW RISK) | 22045 S VALENTINE AVE, RIVERDALE, CA 93656 | LOW (20/100) | No Violation Identified (0 qtrs NC) | $0 |
| FIVE POINTS PIPELINE LLC FREE PREVIEW (LOW RISK) | 12103 W ELKHORN AVE, RIVERDALE, CA 93656 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| PISTACIA GLOBAL INC FREE PREVIEW (LOW RISK) | 5521 22ND AVE, RIVERDALE, CA 93656 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| MARK MCKEAN FARMS FREE PREVIEW (LOW RISK) | 9790 W MT WHITNEY, FRESNO, CA 93656 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — ZIP 93656 (Riverdale, 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 93656 (Riverdale, CA)?
ZIP code 93656 (Riverdale, CA) contains 142 EPA-tracked facilities, of which 2 (1.4%) are classified in the High-Risk tier, 2 (1.4%) have active compliance violations, and 117 (82.4%) handle RCRA hazardous waste.
How does ZIP 93656 compare to Fresno County and California averages?
In ZIP 93656, 1.4% of regulated sites are rated High Risk, compared to 0.6% across Fresno County and 0.3% statewide in California.
What is the EPA Radon Zone and ASTM Phase I screening radius for ZIP 93656?
Geologic screening places ZIP 93656 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 93656 (Riverdale, CA) in a FEMA flood zone and what is the flood disaster history?
Fresno County has recorded 4 historical FEMA federal disaster declarations (4 flood, hurricane, or severe storm declarations). Run a street address scan in ZIP 93656 to unlock the exact parcel FEMA flood zone (AE / VE / X) and mandatory flood insurance status.
Does ZIP 93656 have expansive clay soil, foundation problems, or drinking water violations?
USDA regional soil screening for ZIP 93656 indicates a HIGH shrink-swell risk signal. Within ZIP 93656, federal registries track 3 SDWIS drinking water facilities, 19 Clean Water NPDES permits, and 8 impaired water body dischargers. Unlock a full property report for exact soil LEP %, water table depth, and utility violation dockets.