UN 3077 — Environmentally hazardous substance, solid, n.o.s.
Placard: Miscellaneous. ERG Guide 171. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 3077 is Environmentally hazardous substance, solid, n.o.s., a broad Class 9 environmental hazard entry assigned to ERG Guide 171. Exact material and runoff behavior must be verified.
Hazard overview: Environmentally hazardous solid, n.o.s.; primary concern is environmental contamination, especially waterways. Dust, granules or broken packages may contaminate soil, drains and runoff. Human toxicity, combustibility and water behavior vary by exact substance.
Response guidance: For UN 3077, isolate the area, avoid skin contact and use SCBA where vapor, dust, mist or fire is present. Contain runoff and verify controls with SDS and ERG 171.
Firefighter training notes: Training for UN 3077 should emphasize exposure routes, SCBA use, vapor/dust monitoring, decontamination, runoff containment and SDS/package verification. Use ERG 171, SDS and local SOP.
Regulatory context: Environmentally hazardous substance, solid, n.o.s. is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on quantity, formulation and jurisdiction; verify shipping papers, SDS and authority guidance.
Storage & handling: Environmentally hazardous substance, solid, n.o.s. should be stored in tightly closed compatible containers with ventilation, secondary containment, restricted access and SDS-based segregation from incompatible materials.
UN 3077 Quick Details
Common Hazards of UN 3077
- Environmentally hazardous solid, n.o.s.; primary concern is environmental contamination, especially waterways.
- Dust, granules or broken packages may contaminate soil, drains and runoff.
- Human toxicity, combustibility and water behavior vary by exact substance.
- Some materials may burn or produce toxic smoke if involved in fire.
- Runoff from fire control may spread pollutant beyond the original spill area.
- Avoid dust generation and uncontrolled washing into drains.
- Exact identity must be verified from SDS and shipping papers.
Chemical Identity & Physical Properties
Variable appearance depending on specific substance; typically a solid material at room temperature that poses environmental hazards, particularly to aquatic ecosystems. May be powders, granules, or solid masses with varying colors and no characteristic odor as this is a generic classification.
| Also known as | Environmental hazard solid NOSHazardous to aquatic environment solidMarine pollutant solidEcotoxic substance solid |
| Appearance | Variable appearance depending on specific substance; typically a solid material at room temperature that poses environmental hazards, particularly to aquatic ecosystems. May be powders, granules, or solid masses with varying colors and no characteristic odor as this is a generic classification. |
| Flash Point | Variable depending on specific substance; many are not readily ignitable |
| Boiling Point | Not applicable (solid at ambient conditions) |
| Vapor Density | Not applicable (solid material) |
| Water Reactivity | Generally no violent reaction, but may slowly dissolve or release harmful substances into water causing environmental damage |
Fireground Response Guidance — UN 3077
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for vapor, dust, mist, fire or confined-space exposure. Wear chemical-resistant gloves, boots, eye/face protection and protective clothing.
Isolation & Evacuation
First Actions for a UN 3077 Incident
- Call 911 and the emergency response number on the shipping paper, if available.
- Keep unauthorized personnel away and establish incident command.
- Stay upwind, uphill and upstream.
- Avoid breathing vapor, dust, gas, mist, smoke or fumes and avoid skin or eye contact.
- Do not touch damaged containers or spilled material without proper training and PPE.
- Prevent contaminated liquid, dust, runoff and decontamination waste from spreading.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 171, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 3077 — Environmentally hazardous substance, solUse for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.