**6. Remediation methods**

160 Management of Organic Waste

Fig. 5. New Jersey Landfills listed on the Known Contaminated Site List and the National

Priority List

The frequently used remediation methods for landfills on the National Priority List in New Jersey include excavation to recover recyclable material, capping to reduce leachate generation, air sparging and soil vapor extraction to capture and remediate gases, and pump-and-treat the leachate plume .

Since siting new landfills is a lengthy, expensive endeavor and the community raises opposition to landfills nearby, New Jersey may not have suitable areas for a new landfill. Additionally, existing, operating landfills cannot adequately expand new cells. Therefore, the Statewide Waste Management Plan promotes the use of "sustainable landfills" implementing innovative technologies to extend the lifetime of the landfills. In addition to the methods mentioned above, New Jersey is researching alternative daily covers, deterring bulky wastes, landfill surcharging, and redevelopment opportunities (NJDEP, 2006).
