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Did you know that landfills with gas collection systems can recycle nearly 25% of the material deposited in the landfill? That makes landfills some of the largest recycling operations in the U.S. Here is the best part: The gas created and captured is re-used for renewable energy.
Seabreeze Landfill is teaming with DTE Biomass, which harvests the landfill gas for compressed natural gas that fuels publi transit fleets.
Landfill gas is the natural byproduct of decaying organic material in municipal solid waste landfills. As organic waste breaks down, methane gas is created. Landfill methane is normally consumed (incinerated) in a flare rather than being discharged to the atmosphere. The landfill gas-to-energy initiative provides a renewable alternative to flaring.
At Seabreeze Landfill’s gas collection plant, operated by DTE, a vast majority of the methane gas is harvested through a perforated piping system connected to gas extraction wells. The captured landfill gas is purified on site into renewable natural gas, which offsets the use of fossil fuels and can significantly reduce greenhouse gas emissions.
The landfill gas is a constant source of power that is running all the time, making Waste Connections’ Seabreeze Landfill a good neighbor and good environmental steward in the community.
The geologic location of the Seabreeze Environmental Landfill places it atop very low-permeability clay that restricts the movement of ground water. This natural barrier makes it one of the best geological locations in Texas to site a landfill. In addition, this modern landfill is constructed with multiple environmental protection systems to help protect the surrounding environment.
For instance, the liner system is designed to contain liquids and gases naturally generated by decaying wastes. The liner system consists of a three-foot thick layer of compacted clay with minimum permeability of 1x10-7 centimeters per second, overlaid with a layer of heavy plastic (high density polyethylene) that covers the bottom and sides of each landfill area (cell). A geocomposite drainage layer is placed atop the heavy plastic, and a two-foot thick soil layer covers the geocomposite material to protect it for punctures. A system of pipes collect and pump liquids out of the landfill for treatment.
In addition to environmental protection systems, we utilize numerous monitoring devices. The facility currently has 32 ground water monitoring wells and 47 gas probes, which are regularly sampled and tested by a third-party independent consultant to ensure the site is performing well.
All water sample results are sent to local, state and federal environmental agencies, who monitor and oversee operations at the facility. This constant monitoring does not stop when the landfill closes. In fact, Waste Connections will continue to monitor the site for 30 years after we stop accepting waste. In the meantime, we plan to provide Brazoria County residents and businesses with safe, reliable and low-cost waste collection and disposal for many years.
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