Archive for February, 2010
SPECIAL BLOG CONTRIBUTION by Ryan Keith, Landscape Architect and General Contractor
As a Washington, DC resident, I have been digging out of the snow for the past week. It has been back breaking work and I am excited for all the snow to melt. Over the past 2 weeks, many of my clients have been contacting me to discuss the use of chemical Ice Melt products. What are the best choices to ensure safety yet minimize environmental impact?
The first thing to realize is that Ice Melt products are not good for the environment but there are products that are less harmful. Ideally, we would all use shovels to clear snow and ice and the sun would do the rest but, the reality is that Ice Melt products keep us safe walking around and keeping up with our busy schedules in the winter.
Here are the pros and cons of the different Ice Melt products and my feedback on which ones I use in an effort to be “greener”.
- Not Green, but Effective in Melting: Currently, the most common and cost-effective Ice Melt product is Rock Salt (Sodium chloride). This product is the most common product used by municipalities for roadway clearing and is quite effective at its job and it is cheap. The problem with Rock Salt is what happens after the snow and ice are gone. Rock Salt will kill vegetation, wash into the waterways and increase salinity, kill fish and contaminate drinking water. Additionally, it is harmful to pet’s paws and is very corrosive to metals and concrete.
- Greener Alternatives: Potassium chloride and Magnesium chloride are alternative chlorides that are better than traditional rock salt in that they do not harm plants but, they still wash into our waterways and have a great environmental impact.
- Less Harmful, but Not Green. The second category of Ice Melt products is Urea (carbonyl diamide), these are commonly marketed as “green” Ice Melt products. Urea is less hazardous to children and pets but will still release nitrates into the waterways, depleting oxygen in the water and killing fish.
- Greener Alternative: The better Urea based product is Coated Urea (Carbonyl diamide with glycol mixture) as it is less hazardous to children and pets and the glycol mixture inhibits the release of nitrogen into the waterways. Limiting nitrogen in the water keeps our waterways healthy.
- Municipal Ice Melt Mixes: The third category if Ice Melt is Biological Ad Mixtures. These products do not work on their own yet, but increase the effectiveness of Rock Salt (Sodium chloride) when added together. You can add a Beet Sugar Extract or Corn Extract to Rock Salt and it makes the Rock Salt more effective and thus reduces the potential quantity of rock salt needed to keep roadways clear. These extracts are currently only being added at the municipal level and are not commercially available to consumers. Since an enormous user of rock salt is municipalities, we should be encouraging our local department of transportation to utilize an extract to keep cost down by making the rock salt more effective and limiting rock salt in our waterways.
- Greener, but More Expensive: The last category of Ice Melt are the Acetates. The Acetates are Calcium Magnesium Acetate (CMA), Sodium Acetate (NAAC) and Potassium Acetate. The acetates are some of the safest around children, pets and the environment. The major drawback is that they are all significantly higher in cost. It is common to see products that mix an Acetate with one of the Chlorides to form a more cost effective and more environmentally sensitive product.
Personally I use a Calcium Magnesium Acetate (CMA) by itself or mixed with salt to make it more effective at lower temperatures. I have also used Coated Urea with success. Most importantly, I do not over-use the products and only spread what is absolutely needed to maintain safety. Less of any of the Ice Melt products is always better for the environment. I also do my best to lobby the local Department of Transportation to use Biological Ad mixtures or Acetates with their Rock Salt to reduce impacts on the environment while keeping costs under control. The Department of Transportation uses a lot more Ice Melt than consumers do and their decisions have a much greater impact on the environment.
About the Author: Ryan Keith is a Landscape Architect and General Contractor in the Washington, DC region. His firm, Redux Garden + Home, specializes in environmentally sensitive design and construction practices. See his work and contact him through his website at www.reduxgardenhome.com.Read Full Post | Make a Comment ( None so far )
It’s Valentine’s Day. If you are embracing a loving spirit today and sending some love to those important people in your life, why not throw Mother Earth into that mix. I have to admit that after more than a week of battling record snowfall in Washington D.C. I’m not loving Mama Earth so much and may have even muttered a “so much for global warming” under my breathe after the 20th time of shoveling my way out of my house – BUT – a day of sunshine and glistening snow had me feeling a little less bitter, and reflecting more about weather, climate change, and our environmental responsibilities regardless of how hot or cold it is on any given day or week.
A Sunday opinion article in today’s Washington Post, “Global Warming’s Snowball Fight,” shed some light on the climate change challenge and raised some questions about whether the recent weather patterns have officially shoved climate change legislation to the backburner. A few comments I’d like to share from the article:
- Christine Todd Whitman, who since leaving the EPA is President of the Whitman Strategy Group: “Calling what is happening simply “global warming” is misleading. There will be many changes along the way, including colder temperatures. (…) Let’s not forget that 10 of the past 11 years were the warmest on record.”
- David G. Hawkins, Director of the Natural Resources Defense Council’s climate change programs: “Just as a group of cancer-free, cigarette-smoking 75 year-olds does not disprove that smoking causes cancer, a handful of snowstorms does not counter massive evidence that we are changing the Earth’s climate.”
- Ed Rogers, White House staffer to Ronald Reagan and George H.W. Bush; chairman of the BGR group: “There is global climate science and then there is the Global Warming Movement. (…) The movement was already dead in Congress in 2010, but Snowmageddon buried it. At least for a while, the left will have to think up a new way to dictate a lifestyle for the rest of us. Maybe now the science can continue without the clumsy overreaching of the movement’s priestly class.”
Quite different perspectives from different sides of the aisle. And this debate will likely continue for as long as I am still alive. In another article in the Washington Post today, writer Bill McKibben shed some interesting light on the cold weather effect of global warming: “…Rising temperature is only one effect of climate change. Probably more crucially, warmer air holds more water vapor than cold air does. The increased evaporation from land and sea leads to more drought but also to more precipitation, since what goes up eventually comes down. (…) global warming has added 4% more moisture to the atmosphere since 1970 [which] means the number of ‘extreme events’ such as downpours and floods has grown steadily.”
While we continue to examine the scientific evidence of climate change, shuffle legislation from the House to Senate and back to the review files, hold meetings in Copenhagen or other cities around the globe, why not take a few simple actions in the meantime. It may not prevent another historic snowfall in Washington DC this winter, but certainly won’t hurt any of us to show a little love to the planet!
A few ideas to live greener, showing some love to Mother Earth and your Valentine(s):
- Reuse: Get creative with things collecting dust in your junk drawer. Courtesy of treehugger.com, design your own necklace out of old keys.
- Be an Eco-traveler: Check out these sites for ways to support businesses making a commitment to green while you enjoy a little R&R.
- Recreate: Got roses from your sweetheart? Turn them into a natural skin enhancer.
- Improvise: Skip the restaurant. Hit the farmer’s market. Have nice candlelit dinner at home, probably saving money and CO2 emissions.
None of these green actions are destined to have a significant impact on reducing carbon dioxide emissions and other greenhouse gases, but every little step helps. Less waste, less travel, supporting a green supply chain – all these efforts add up. So don’t be afraid to show some love to your planet by saying and doing more with less. Your loved ones might also appreciate your thought and creativity!
be well. live green.Read Full Post | Make a Comment ( None so far )