Danger Excavation Trench Sign – Hazardous Atmosphere Test Air Before Entry, 8x12 Rust-Resistant Aluminum Trenching Safety Sign by CGAP Safety

A trench can look harmless right up until it isn’t. Atmospheric hazards don’t announce themselves, and they do not care how experienced someone feels that day.

The CGAP Safety “Danger – Excavation / Trench – Hazardous Atmosphere – Test Air Before Entry” sign is designed for construction sites, utility work, and trenching operations where hazardous vapors, toxic gases, or oxygen-deficient atmospheres may accumulate. The bold DANGER header establishes urgency immediately, while the message delivers a specific, actionable control: test the air before entry.

This sign is a practical fit for trenching near sewer infrastructure, fuel systems, chemical processes, landfill areas, industrial sites, and confined or low-lying excavations where gases can migrate or pool. Mounted near access points, barricades, fencing, or trench approach routes, it creates a clear expectation for anyone approaching the excavation: do not assume the air is safe.

Manufactured from rust-resistant aluminum in an 8 x 12 inch format, it is built for jobsite realities. It holds up longer than paper notices and thin plastic signs that fade, curl, or disappear after the first round of weather, equipment traffic, and general human chaos.

Use this sign as part of your trench safety and hazard communication program to reinforce consistent air monitoring behavior, reduce preventable exposures, and support safer entry discipline on active excavations.

CGAP Safety is an American safety manufacturer dedicated to straightforward, durable signage that helps organizations see the gap and close the gap between written safety programs and what actually happens in the field.

Important: This sign is a warning tool only and does not replace required training, competent-person oversight, protective systems, ventilation, rescue planning, PPE, or applicable standards and site procedures. Always follow your project safety plan and regulatory requirements.

• EXCAVATION / TRENCH DANGER SIGN – “Danger / Excavation / Trench / Hazardous Atmosphere / Test Air Before Entry” communicates an immediate atmospheric hazard risk in excavation and trenching operations.
• PROMOTES AIR MONITORING BEFORE ENTRY – Direct instruction reinforces safe work practices by reminding crews to test the atmosphere prior to entering areas where gases, vapors, or oxygen deficiency may be present.
• REDUCES PREVENTABLE EXPOSURE INCIDENTS – Supports jobsite hazard communication by warning workers and visitors that atmospheric conditions may be unsafe even when the trench looks “normal.”
• 8x12 RUST-RESISTANT ALUMINUM – Rigid 8 x 12 inch sign manufactured from rust-resistant aluminum for durable performance in outdoor construction environments and changing weather conditions.
• HIGH-VISIBILITY OSHA-STYLE LAYOUT – Classic red DANGER header and bold block lettering improve readability on posts, fencing, barricades, and approach points near excavation work.
• MADE BY AN AMERICAN SAFETY MANUFACTURER – Produced by CGAP Safety, an American safety manufacturer focused on clear, compliance-minded messaging and durable materials for real-world worksites.