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Mount Everest is a ‘fecal time bomb.’ Here’s one man’s idea for handling 14 tons of poop.

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By Cleve Wootson, The Washington Post

Every year, some 1,200 people make a mad dash for the summit of Mount Everest during the climbing season that begins in May — taking on the arduous, often congested route to the world's highest peak that most will not complete and some will not survive.

Working against them: temperatures far below zero, altitude sickness with effects that range from disorientation to death, and the ever-present threat of frostbite. More than 200 corpses of ill-fated climbers line the mountain's slopes, a constant reminder of those climbers' fatal missteps.

It is probably no surprise, therefore, if people climbing a mountain with its own death zone do not give too much thought to one particular question:

What should we do with all this poop?

In the roughly two months that it takes to climb Mount Everest, the average alpinist will have produced nearly 60 pounds of excrement. This season, porters who work on Mount Everest carried down 14 tons of human waste from base camp and other locations. It's dropped into earthen pits on Gorak Shep, a frozen lake bed near a village 17,000-feet above sea level, as The Washington Post's Peter Holley wrote in 2015.

[post_ads]If not handled properly, the frozen fecal matter will spend years littering one of the Seven Natural Wonders of the World. As Grayson Schaff, an editor for Outside magazine wrote in a 2012 Washington Post opinion piece: “The peak has become a fecal time bomb, and the mess is gradually sliding back toward base camp.”

It is a problem Garry Porter is well aware of. He's a retired engineer who got more than 20,000 feet up the mountain in 2003 before too-strong winds forced his climbing party to turn back. He's spent a good chunk of his retirement thinking about Everest — and about how to clean it up.

“Everest is a lifetime dream for most climbers. You come off of that, and you're still wrapped up in the scenery and the nature, and . . . tempering that excitement is the thought that we really made a mess,” Porter told The Post. “It really was a feeling that Everest deserves better than that — and it’s my responsibility because I’m a climber and I can’t walk away saying my c**p doesn’t smell.”

His solution for what he calls a potential environmental nightmare is simple: Use a biogas digester to turn mountaineer excrement into something more useful. The digester would produce fertilizer and methane, a renewable biogas that can be used to cook food and light homes.

Whole Foods uses a similar system to reduce food waste. In fact, the digester Porter wants to build won't be much different from devices sold on the Internet: A large tank that can hold water, human waste and anaerobic bacteria will produce fertilizer and methane gas to power cooking stoves and fires.

There is, however, a mountain-size hurdle. The bacteria won't do their work in very low temperatures. And in many parts of Mount Everest, the thermometer doesn't go north of freezing all year long.

So Porter, a man who spent a career as an engineer but wanted a sizable challenge to occupy his mind in retirement, had found a problem to solve: How to keep the digester at optimal temperature using only simple materials that can be obtained locally?

The device he has come up with is a cross between a sewage treatment facility and a gigantic thermos — a digester, buried in the ground and surrounded by insulation. On top of that, subcontractors will construct a basic hut that will keep the elements out and keep the temperature above a relatively toasty 68 degrees.

Solar panels will be used to transmit heat into the digester and power batteries that will be used for nighttime heating.

If it sounds simple, that's by design.

If the digester is too difficult to operate — or replacement parts have to be shipped across the world — it won't last. And the goal is to ultimately turn the device over to authorities in Nepal, who will operate it.
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Porter said his group, the Mount Everest Biogas Project, has obtained Nepalese government approval to build the digester, along with the blessing of dozens of climbers who sought to conquer Everest, not sully it.

One of his favorite moments of the project was watching a researcher at Kathmandu University turn a knob and spark a blue flame with methane from a prototype digester, the gas produced by excrement removed from the mountain.

He hopes the design serves as a proof of concept for other mountains. His group is taking donations and estimates that it will cost half a million dollars to install a working digester on Everest. They could break ground as soon as they raise enough funds.

Porter sees developing the digester as doing his part to care for a more than 29,000-foot mountain that has pushed him to be better.

“I think you need to earn Everest,” he said. “I’ve spent years climbing lesser mountains — getting experience, getting confidence, and you work up to it.

“I owe something. It’s not my mountain. I’m just there. And I should leave it . . . as clean as I found it.”

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