This document discusses various food safety standards and methods for monitoring environments and hazards. It describes several global food safety standards including ISO 15161, GFSI, IFS, BRC, and SQF. ISO 15161 provides guidelines for implementing food safety in ISO 9001, while GFSI works with retailers and stakeholders to benchmark food safety standards. IFS and BRC standards were influenced by ISO 9001 and focus on quality management systems and food safety requirements. The document then covers various methods used for monitoring things like water quality, food safety using HACCP, air pollution levels, and noise levels to control environmental hazards.