The Blue Haze site is a landfill accepting household and similar commercial waste. The site operates under a containment cellular system to enclose the waste using clay extracted from the site. The clay needs to be worked and stored which takes up space. The landfill containment cells are designed to be of a certain size that looks to maximise the amount of waste in each. Each cell will last for several years and several cells are open being prepared, in operation or being restored. The Purple Haze site design relates to a phased sand extraction operation where each phase lasts for a year. This is how Grundon prefers to operate as soils and clays do not need moving into and out of storage. There is no importation of waste with the Purple Haze development.