Letters

Letters 07-27-2015

Next For Brownfields In regard to your recent piece on brownfield redevelopment in TC, the Randolph Street project appears to be proceeding without receiving its requested $600k in brownfield funding from the county. In response to this, the mayor is quoted as saying that the developer bought the property prior to performing an environmental assessment and had little choice but to now build it...

Defending Our Freedom This is in response to Sally MacFarlane Neal’s recent letter, “War Machines for Family Entertainment.” Wake Up! Make no mistake about it, we are at war! Even though the idiot we have for a president won’t accept the fact because he believes we can negotiate with Iran, etc., ISIS and their like make it very clear they intend to destroy the free world as we know it. If you take notice of the way are constantly destroying their own people, is that living...

What Is Far Left? Columnist Steve Tuttle, who so many lambaste as a liberal, considers Sen. Sanders a far out liberal “nearly invisible from the middle.” Has the middle really shifted that far right? Sanders has opposed endless war and the Patriot Act. Does Mr. Tuttle believe most of our citizens praise our wars and the positive results we have achieved from them? Is supporting endless war or giving up our civil liberties middle of the road...

Parking Corrected Stephen Tuttle commented on parking in the July 13 Northern Express. As Director of the Traverse City Downtown Development Authority, I feel compelled to address a couple key issues. But first, I acknowledge that  there is some consternation about parking downtown. As more people come downtown served by less parking, the pressure on what parking we have increases. Downtown serves a county with a population of 90,000 and plays host to over three million visitors annually...

Home · Articles · News · Features · The Smell of Money: Pumping gas...
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The Smell of Money: Pumping gas from landfills

Harley Sachs - August 11th, 2005
Here in the U.P we used to call them
bear pits. They were the open garbage dumps where tourists occasionally would try to
put their kiddies on the backs of hungry
wild bears in the hopes of getting that great souvenir photo, sometimes with unhappy results.
Turns out that calling our dumps bear pits was a misnomer. The proper name for what are
now officially sanitary landfills is money pits. Not only can municipalities reap substantial rewards from tipping fees of $90 a ton,
but they can also mine those mountains
of trash for valuable gasses and turn them into electricity.
That’s what R.G. Engineering Company of Webberville, Michigan is doing for
their clients.
If a landfill is designed properly, that is. Lined first with a heavy plastic to prevent seepage into the ground water, all those goodies stay put, waiting to be harvested. In particular, what Jon Rabitoy, president of RPG, is after is trapped methane.
We’re all familiar with methane. It’s
the gas we generate ourselves after a meal
of bad chili or cauliflower. We don’t generate enough to utilize other than to light as
a bachelor party prank, but a sealed landfill has plenty.
It works like this: gas wells are sunk from 30 to 90 feet in the landfill and a gentle vacuum sucks out the methane. It is then run through a battery of converters. Usually four are set up, with three always running while a fourth gets routine maintenance.
According to a confidential report from Rabitoy’s company, “Neenah/Menasha, Wisconsin developed a landfill over a 10-year period. The landfill was filled, capped and a collection system was installed 18 months ago. Today the landfill generates and flares 1,000 ft3/min of landfill methane gas, where the gas temperature is 96 degrees F and is delivered at 1 psig pressure to the flare.”
The electricity generated by this system is incredibly cheap, 2 cents a kilowatt hour created from the landfill gas which costs half a cent per kilowatt hour to recover.
The electricity is then sold for 5.5 cents a kilowatt hour, and the project’s net revenue is estimated at $475,146, with a simple payback for the project of 9.25 years.
Other systems can recoup the initial costs in less time, 5.1 years. Even more rapid payback can be derived from animal waste.
My brother was once part owner of a pig farm where the noxious waste was turned into methane to provide energy. They generated enough electricity on the farm to provide all their energy needs. A feed lot may produce many tons of animal waste. Anyone who’s lived within nostril range of one of those can testify to the noxiousness of that, but the electricity generated from that animal waste can recoup the costs of the installation in little over a year.
The electricity these systems generate is sold to the electric grid to supplement power generated by conventional plants. No wonder a landfill can turn into a profit for a municipality! They can collect at both ends.
What’s clear is that waste products from feed lots and city landfills can put a significant dent in our need for energy. I suspect that the Keweenaw bears are disappointed to no longer have easy pickings at our garbage dump, but if we go the way of Neenah/Menasha and other municipalities we’ll not only get some extra income, but we’ll utilize some of those infamous greenhouse gasses. Oh, and turn the stink to cash. You never knew the smell of money had an odor like that.
 
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