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Natural Resources and Parks

King County, Washington

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Nov. 25, 2008

Waste-to-energy partnership protects both planet and plumbing

Holiday chefs can protect water quality, keep their plumbing clog-free, and create a sustainable energy resource this Thanksgiving courtesy of a public-private partnership that offers an easy way to dispose of cooking fats, oils and grease.

King County's Wastewater Treatment Division and General Biodiesel Inc. have teamed up to promote residential recycling of unwanted cooking fats, which can eventually be converted into biodiesel fuel to power automobiles, public transit, and semi trucks.

Local residents can dump their used or unwanted cooking oil, grease, or lard directly into a drop off container located in front of General Biodiesel’s main office at 4034 West Marginal Way Southwest in Seattle. People can also schedule a drop-off by calling 206-932-1600. The facility is open Monday through Friday between 8 a.m. and 3:30 p.m.

In addition to generating a local sustainable resource of waste oil for local energy production and use, King County hopes the disposal option will encourage people to keep fats, oils, and grease out of their drains and out of the sewer system, preventing clogged pipes and possible raw sewage overflows that can put public health and the environment at risk.

“General Biodiesel offers a much more environmentally friendly alternative to putting fats and oils down the drain,” said Wastewater Treatment Division Director Christie True. “We’re pleased to support their work because it plays a role in helping our sewer system continue to operate reliably.”



“Of course, residents also benefit by avoiding their own plumbing problems,” she added.

“General Biodiesel is excited to be partnering with King County Wastewater Treatment Division to recycle the unwanted cooking oil to convert to biodiesel fuel for local consumption,” said Yale Wong, CEO of General Biodiesel.

“This partnership is a win-win for everyone involved. It helps to divert unwanted cooking oil, grease, and lard from clogging our sewer system. At the same time we are developing a local alternative fuel source that will help us to become more energy independent,” he added.

King County and General Biodiesel Inc. offers a list of tips to residents looking to protect their plumbing and properly dispose of fats, oils and grease:

· Collect grease from pots, pans, and grills and put it in a container to deliver to General Biodiesel. If you can’t drop it off, put it in the trash.

· Never pour oil or grease into a drain or toilet.

· Let grease solidify in a container before putting it into the trash.

· Put baskets and strainers in sinks to catch food scraps.

· Don't put grease or meats in garbage disposals.

· Before putting large amounts of cooking oil in the garbage, mix it with an absorbent material like sawdust or kitty litter. Consider dividing large amounts over several collection days.

More information on keeping our sewers “fat-free” is available at or by calling 206-684-1280 or 711 TTY.

General Biodiesel Inc. (GBI) is a Seattle-based “waste-to-energy” company committed to producing high-quality biodiesel fuel from sustainable sources. It is also committed to promoting environmental sustainability and local economic development. Learn more about General Biodiesel Inc. by visiting

People enjoy clean water and a healthy environment because of King County's wastewater treatment program. The county's Wastewater Treatment Division protects public health and water quality by serving 17 cities, 17 local sewer utilities and more than 1.4 million residents in King, Snohomish and Pierce counties. Formerly called Metro, the regional clean-water agency now operated by King County has been preventing water pollution for more than 40 years.