REUTERS/Brian Snyder

Desperate for snow-disposal solutions, Boston has asked the public for ideas. Scientists weigh in on the most responsible options.

With a record-shattering six feet of snow covering Boston in just four weeks—and more coming Thursday—the city is scrambling to find places to stash its plowed snow. Should they keep hauling it off to the Skywalker-esque "snow farms" dotting the city? Revisit the Colonial past with a giant snow dump into the harbor?

The city's desperate enough to have put out a call yesterday to academics, environmental leaders, and the general public for novel snow-disposal ideas.

After all, neither the snow farms (the city's current solution) nor the harbor (an idea that's being floated) are perfect options.

At the "farms"—vacant lots turned icy wonderlands—some snow stays frozen in piles up to 40 feet high, disappearing only with the spring melt. Other loads get fed into fearsome melting machines, which filter out the street-snow's nasty gunk (oil, gas, salt, and all manner of trash items) before spouting warm runoff into storm drains (and, eventually, Boston's harbor, rivers, and estuaries) at a rate of 400 tons per hour. The machines might be effective, but they're gas-guzzlers, and a drain on city resources.

How about dumping snow into the harbor? It's normally prohibited by state law, because of the environmental impacts of the snow's salt and contaminant content. (The practice was common until a massive cleanup of the infamously dirty harbor in the '90s led to tighter restrictions.) But Boston's public safety might soon override environmental concerns, as Mayor Martin J. Walsh told the press Monday, and the harbor might become a last-ditch receptacle.

“We’re not at a public-safety concern yet,” Walsh said, “but we will be if we keep getting snow like this.”

So what's a city to do?

A number of local environmental agencies and organizations have stepped forward in support of dumping into the harbor if other options get snowed under. So have some oceanographers.

Robert Chant, a professor of physical oceanography and estuarine dynamics at Rutgers University, told Popular Science that, by his calculation:

...the Boston Harbor contains about 10 million tons of salt. As of February 10, the city had dumped about 60,000 tons of the stuff onto roads, or less than 1 percent of what’s in the water. So even if all the snow from the streets entered the water at once, it still wouldn't significantly impact the harbor's salinity.

So harbor dumping = no big deal, right? Not quite, according to Mi-Hyun Park, a professor of environmental engineering at a UMass Amherst who researches stormwater-runoff management. There's more to be concerned about than mere salinity levels.

"It's not going to be good, because you're going to directly increase pollution into the harbor," she says. "Snow can pick up pollution from the air in addition to the oil and deicing agents it can pick up from the road."

Park loosely analogized the harbor plan with sending untreated wastewater into the ocean—a practice that, when added up, can have catastrophic results.

Since there's much we don't know about the type and quantity of pollutants in Boston's street-snow, Park says it's probably best to keep using the snow farms, carbon-hungry as they are. Depending on location, snow-farm runoff is often treated before getting deposited into the water. Sometimes nearby soil and dirt can also act as a natural filter for all the gunk.

Yet as the Northeast gets pounded with more extreme snowfall, year after year, cities can't just maintain status quo. More research is needed to understand the environmental impacts of snow and snow-melt—and to figure out new ways of dealing with it. "There is a great need to work on this kind of research," says Park.

That way, maybe Boston won't have to scramble the next time it gets slammed.  

About the Author

Most Popular

  1. a map comparing the sizes of several cities
    Maps

    The Commuting Principle That Shaped Urban History

    From ancient Rome to modern Atlanta, the shape of cities has been defined by the technologies that allow commuters to get to work in about 30 minutes.

  2. black children walking by a falling-down building
    Equity

    White Americans’ Hold on Wealth Is Old, Deep, and Nearly Unshakeable

    White families quickly recuperated financial losses after the Civil War, and then created a Jim Crow credit system to bring more white families into money.

  3. Life

    Why Are America’s Three Biggest Metros Shrinking?

    After a post-recession boomlet, the New York, Los Angeles, and Chicago areas are all seeing their population decline.

  4. People walk along a new elevated park that winds through a historic urban area.
    Equity

    How to Build a New Park So Its Neighbors Benefit

    A new report from UCLA and the University of Utah surveys strategies for “greening without gentrification.”

  5. Tents with the Honolulu skyline behind them
    Life

    Where Is the Best City to Live, Based on Salaries and Cost of Living?

    Paychecks stretch the furthest in smaller cities for most workers, but techies continue to do best in larger, more expensive cities.

×