LANDFILL DESIGN

The Landfill design consists of 6 Cells. Of the 6 Cells, 5 are currently constructed and active. Cell 1-A has been in operation since September 1990 and is approximately 6.2 acres. Cell 1-E and W1/W2 have been in operation since March 1992 and are approximately 5.4 and 7.7 acres respectively. Cell 3, in operation since December 2000, is approximately 10 acres. Cell 4 which is approximately 12 acres was completed in April 2003.

The other cell at the Landfill will be constructed as needed in the future. The state-of-the-art liner system currently in place at the Landfill consists of a double composite liner system.

The components of the system are:

  • 12" thick stone subgrade stabilization layer
  • High Density Polyethylene (HDPE) 60 mil smooth or textured liners (primary and secondary)
  • Geosynthetic Clay Liner (GCL) or Bentonite (an absorbent aluminum silicate clay) liners (primary and secondary)
  • Leachate (waste water) collection piping systems (primary and secondary)
  • 12" thick stone secondary drainage layer or geocomposite drain
  • 24" thick stone or sand primary drainage layer

LANDFILL COMPLIANCE

Located at the Landfill is a 900,000 gallon leachate tank. All rainwater that is collected in the Landfill is drained through the liner piping system to the tank. From the tank the leachate travels to a pump station, and then is pumped through a force main pipe to the RRF and mixes with their waste water. From the RRF, the leachate is piped to the Pequest River Municipal Utilities Authority where it is treated and discharged to the Pequest River.

Samples of leachate are collected monthly by a certified lab and the results sent to the proper state agencies. Other sampling locations at the Landfill include 20 monitoring wells throughout the site. These wells allow testing of the aquifier that runs below the landfill. There are strict monitoring requirements implemented at the Landfill for ground water, leachate, wastes received and landfill operations. All efforts are made to ensure a safe, efficient and well-maintained Landfill for the public and for the environment.

The information in this brochure is intended to help everyone better understand the operations of a modern landfill.