What is the purpose of a combustible gas indicator (CGI) at a UST site?

The purpose of a combustible gas indicator (CGI) at a UST site is to detect flammable gases in the atmosphere. This is vital for ensuring safety during site assessments and remediation activities. A CGI monitors the presence of volatile organic compounds (VOCs) and other flammable gases that may be emitted from underground storage tanks or from contaminated soil.

These indicators help assess potential hazards, allowing personnel to take appropriate precautions to avoid explosions or fires. By providing real-time feedback on gas concentrations, a CGI plays a crucial role in maintaining a safe working environment, especially in areas where flammable substances could accumulate. Understanding the levels of flammable gases is essential in risk management at UST sites, aiding in compliance with safety regulations.