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05 เมษายน

2009: AK Skagway: wood burning in valley causes pollution

Valley of Smoke

Air quality challenged by residents' burns

 

The smoke from one home’s wood-burning stove moves across the entire valley in this December photo. - Dimitra Lavrakas

By DIMITRA LAVRAKAS
Though Skagway’s name in Tlingit means “windy place,” this fall it failed many times to move air out of the valley.
Inversions, periods when air stagnated over town, held smoke from fireplaces and wood burning stoves to 15 feet off ground level. Smoke choked off visibility at one end of Broadway, enveloped the school, and spread from one open burn all the way from the north end of town to Taiya Inlet.
While using fireplaces and wood burning stoves to keep warm is a long tradition in town as well as the rest of America, exactly what is being burned here is fast becoming a health issue.
This fall, Skagway Medical Clinic Medical director Kendall Simm said the staff was seeing more respiratory cases than usual.
“There’s lots of pneumonia right now,” said Simm in December. There’s been five cases over the last two weeks. When you look at how low our population is that’s pretty significant.”
A two-year pilot study on local lichens by Elaine Furbish, former resource director for the Klondike Gold Rush National Historical Park, found that Skagway lichens had higher levels of sulfur and cadmium, copper, iron, lead, nickel, and zinc.
“Lichens really absorb compounds from the air,” explained Furbish in a NPS press release. “This makes them useful as ‘bioindicators’ of air quality. We compared levels of elements in lichen tissues from the Skagway area to baseline levels for Southeast Alaska and to air pollution indication thresholds for the greater Pacific Northwest region. We consistently found that Skagway area lichens had high levels of sulfur and some metals. This means our lichens are showing signs of air pollution.”
Identification of specific sources of the pollution was beyond the scope of the study, Furbush said.
Skagway Fire Chief Martin Beckner has been trying to educate the public on how and what to burn.
“All you can do is hope that people who come in and get literature, read it and follow it,” Beckner said.
He said all open burns must have a burn permit. Burn barrels must also have a permit as well as comply with the state Department of Envrionmental Conservation guidelines. He’s been putting up fliers about it all over town (see Burn Guidelines box).
“Calm is when I want it,” he says about optimum conditions for burns. “Inversion layers are a problem obviously.”
Beckner said while his department doesn’t enforce the rules, he would go and check out a burn and substantiate it for a state department if there’s a blatant violation.
Ann Lawton, environmental specialist with DEC, said complaints about air pollution may be phoned in anonymously to the toll-free number 800-770-8818 or a more direct number, 907-269-3066.
While the limitations of what can be burned in the open is more strict than what is burned in a fireplace or wood burning stove, state officials say common sense should be used. If it’s illegal for an open burn, why would anyone burn it in their homes, they reason.
Nothing in life is free
One material that has been used for over a century here is the creosote-treated railroad ties that are easily available for the taking. Treated telephone poles are also burned.
“Creosote is a poisonous substance and could cause a lot of serious health problems,” said John Pavitt, air coordinator for the Environmental Protection Agency in Alaska. “People who think they’re getting free wood are setting themselves up for health problems.”
The Web site for the Agency for Toxic Substances and Disease Registry says creosote is the name for a variety of products of wood creosote, coal tar creosote, coal tar and coal tar pitch. The products are a mixture of many chemicals created by burning beech and other woods, coal, or from the resin of the creosote bush.
It all sounds like it comes from a natural product, but ATSDR cautions that even handling creosote treated wood has been associated with increased risk of contracting cancer – in particular, cancer of the scrotum and skin cancer.
Lawton said DEC has been in discussion with the White Pass & Yukon Route Railroad for “quite some time,” about the best way for the company to dispose of its railroad ties.
Burning of any treated or coated wood is not recommended as they are considered hazardous waste by the EPA and industrial solid waste by DEC, and must go through a rigorous and lengthy reclamation of shredding, chemical treatment and bioremediation.
“When you take a piece of wood and treat it, you’re going out of your way to make it toxic,” said Glenn Miller, program manager for DEC’s solid waste division in Juneau.
WP&YR President Fred McCorriston said the project to get rid of old ties will likely take place over the next few years by using a chipper and sending the chips out. Burning them, he said, “is not an option.”
White Pass’ McCorriston is at a loss of how to stop people from taking railroad ties from the railroad’s yard and burning them in their homes.
“If there was any way to keep people from dumping or removing material,” McCorriston said from Seattle. “We have signs posted.”
Telephone poles and pressure-treated wood used for decking and other outdoor uses are usually treated with chromium and/or arsenic. Arsenic has been identified as a health hazard to people who use or come in contact with pressure treated wood, which has a greenish tint from the treatment
Family Circle Magazine has an article in its February issue dealing with pressure-treated wood that details real-life cases of people whose health has been affected. One person was partially paralyzed, another family was poisoned when they burned wood scraps in their wood burning stove, and one worker lost nearly half his blood in a vomiting episode after making park benches with the treated wood.
Where there’s fire, there’s smoke
Chris Ellis, whose daughter Jestine has allergies, said she called DEC several years ago to ask them to come and monitor the air in Skagway, but her call was never returned.
Ellis lives on the north end of town. Her neighbor to the south, J. Frey, said his stove puts out heavy smoke before it begins to combust properly. “I try not to do it so to annoy people,” Frey said.
Frey, who is an electrician, said he doesn’t burn electrical wires in his fireplace anymore. It was something he did in the past until he realized how unhealthy it was.
On the other side of Frey, is Ellis’ father, Jan Nelson, who uses a wood-burning stove in his shop. He said he burns paper from the house, and scrap lumber. He doesn’t use creosote or treated lumber because creosote can build up on the chimney pipe and cause a chimney fire, and treated lumber residue eats up the metal pipe.
Nelson said he was aware of the health hazards of both types of lumber because when he worked with the state Department of Transportation and Public Facilities, “they had HAZMAT on all that stuff, so we paid attention.”
What to do?
While agencies make their decision whether to monitor the air, residents are faced with the question of how to improve air quality year-round.
A similar seasonal situation existed in Juneau when inversions choked the Mendenhall Valley with wood smoke. The City and Borough of Juneau passed an ordinance that prohibits the use of wood-fired heating devices.
Under state statute, wood-fired heating devices cannot emit black smoke and the smoke cannot exceed 50 percent opacity for more than 15 minutes in any one hour in an area where an air quality advisory has been in effect.
Cruise ship smoke, tour bus and shuttle fumes and diesel train engine exhaust has not been addressed. Although the air quality in the downtown area did improve with the introduction of city transit, replacing the older shuttle buses.
There is no one in town trained to determine when a cruise ship emits an illegal amount of smoke according to state law.
Pavitt said he applied for funds to come to Skagway and conduct a training seminar but was turned down.
State officials say the City of Skagway can put ordinances in place to prohibit the burning of certain materials and limit the time of burns if there is an inversion or north wind that would blow the smoke back over town.
A barrel full of trouble
A companion issue is the use of burn barrels. Although there was a supposed promise to ban them after the incinerator went into operation several years ago, an ordinance proposing a ban was defeated by the City Council.
“There was a hue and cry from the public,” said City Manager Bob Ward. “But I see less burn barrel use from people trying to cut back on the number of garbage pick-ups by burning their entire garbage.”
Ward also doesn’t remember any supposed promise that the incinerator would not operate in a north wind. He said the incinerator burns only once a week. In the winter, he said it would be hard not to burn with a north wind as that’s the predominant direction.
According to Wisconsin’s Department of Natural Resources, burn barrels emit acid vapors, carcinogenic tars, and heavy metals such as lead, cadmium and chromium and unhealthy levels of carbon monoxide. Some of the same chemicals identified in the lichen study.
The EPA has found the amount of dioxin generated by four families openly burning their trash is equivalent to that of a 200-ton-per-day-capacity municipal solid waste incinerator.
There are alternatives
The city does operate a recycling program that takes glass, tin and aluminum. Car batteries are also taken at the Department of Public Works shop on Fifth Avenue.
The city also takes dry, broken-down cardboard at the incinerator site for free. Cardboard once represented 40 percent of the solid waste going through the incinerator, now it is compacted and shipped out. The volume of cardboard that moves through town is evident in the spring to everybody when the season’s inventory arrives.
And here, in the “Garden City of Alaska,” composting has become something of a religion because gardeners know that good soil has to be made, it’s not naturally available in a valley of glacial till.
“We did away with ours,” said Ellis of her burn barrel. “We recycle and I have a compost pile.
“It’s too bad we can’t have good air especially where we are. We have clean water, why not clean air?”

Going left to right: Broadway looking south is obscured by wood smoke; On an inversion day, smoke a nearby home envelopes the Skagway School. The picture is taken from across the Skagway River. - Dimitra Lavrakas

Skagway burn guidelines
You must have a burn permit for any burning: burn barrel, pile burning or broadcast burning. It’s free and available at the Skagway Volunteer Fire Department.
Burn barrels
• The barrel must be in sound condition, have a screen on top to prevent burning debris from escaping, have holes at the bottom for ventilation, raised off the ground, or on the ground with no grass or vegetation within a 10-foot diameter.
DEC Regulations material ban
• Spill absorbents and contaminated soils that are hazardous waste.
• Pesticides, halogenated organic compounds, cyanic compounds or polyurethane products burned in a way that gives off toxic or acidic gases or particulates.
• Putrescible garbage, animal carcasses, or petroleum-based materials burned in a way that causes odor or black smoke that may have an adverse effect on nearby persons or residences.
• Electrical batteries, all types and sizes.
• All liquid-form paints (e.g. in cans). Wood with lead-based paint may require a permit (call DEC).
• All solvents, except those composed of water and soap/detergent solutions.
• All aerosol cans, except those that do not use chloro- or fluoro- carbon propellants.
• Asbestos or any metals or alloys containing beryllium, chromium, cobalt, arsenic, selenium, cadmium, mercury, lead, or any radioactive wastes.
• Any electrical or electronic lamps or components that contains any of the above metals/alloys (including fluorescent, high-pressure sodium, mercury vapor and metal halide lamps.)
• Any plastics or other materials containing chlorine as an essential component (such as Polyvinyl Chloride - PVC pipe). However, salt (any metal chloride, used for thawing or ion exchange) residue in empty containers contains chlorine as an essential component.
• Tires.
• Treated wood containing compounds such as creosote, napthlate, or tar.

To Report a Burn
If you suspect a violation of proper burning, call the Skagway Fire Department at 983-2450 or call the state Department of Environmental Conservation’s anonymous, toll-free number (800)770-8818. -DL

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