2.1. Site description
The field campaigns were conducted at a landfill (abbreviated as PJ) in northern China, located in Liaoning province.
The PJ landfill was started in 2009, having a total landfilling area of approximately
30.68 hectares and a total capacity of 6.52 million m3. It was receiving about 600 metric tons of MSW each day.
The composition of MSW is shown in Table 1. MSW unloaded at the PJ landfill was exposed for 0–3 months before being covered with HDPE membrane or soil.