The National Green Tribunal in 2019 had asked the authorities to start the biomining of legacy waste in the landfills in Delhi, namely Ghazipur, Bhalswa and Okhla. It was estimated that it would take about a decade to flatten the largest landfill in Ghazipur.
The data shows that around 3 lakh tonnes were assessed in 2019/20 and were bio mined. In 2021 authorities processed 4.81 Lakh tonnes. According to studies, even if authorities process 4 lakh tones every year still, it would take them about 33 years to clear out the entire mountain. This is if fresh waste is not added to it every day. In 2021 the fresh waste added to Delhi’s landfills was more than the legacy waste processed in the same year.