This guide outlines the principles for preventing harm to the environment and human health when storing and handling liquid substances. Each section of this guide provides information on proper storage and handling methods for liquids and how you can reduce and control risks. The guide covers topics including risk management, primary containment, secondary containment (including bunding), requirements for dangerous goods and hazardous substances, spill prevention, maintenance and incident response. If you produce, use or store any liquid substances then you need to consider the associated pollution risks and act to reduce those risks. Publication 1698 replaces publication 347 (Bunding guidelines).