Monitoring information is important to maintain the usefulness of the environmental analysis in plans and development regulations for project-level review and to update plans under chapter 36.70A RCW. GMA counties/cities are encouraged to establish a process for monitoring the cumulative impacts of permit decisions and conditions, and to use that data to update the information about existing conditions for the built and natural environment. If a monitoring process is developed, it should be established at the time information on existing conditions is developed. Annual or periodic reports summarizing the data and documenting trends are encouraged.