Solid waste management is an environmental priority for most islands in the Pacific. Unfortunately, lack of recycling and reduction initiatives, poor waste collection systems, open dumpsites, and environmental pollution are still common in many countries in the region. Despite this general outlook, there are a number of positive changes being made to improve waste management policies and practices in Pacific Island Countries and Territories (PICTs), including improvement of collection systems, implementation of container deposit schemes, and the upgrading and construction of sanitary landfills. This book is primarily targeted at solid waste officers in Pacific island countries and territories (PICTs) who may have little background in engineering and construction. The objective of this guide is to help those users understand the concept of a landfill and its operation.