Treated Wood A Long Term Environmental Threat

The arsenic used to treat wooden decks, utility poles and fences will leach into the environment for decades, posing a grave threat to groundwater reserves, say two studies in the journal Environmental Science & Technology.

The studies were based on wood treated with chromated copper arsenate (CCA). The researchers, from the University of Miami, the University of Florida and Florida International University, examined leaching from actual wooden decks as well as from simulated landfills. Their findings showed that deck wood leached high levels of arsenic into rainwater runoff and the soil, and continued leaching arsenic while sitting in simulated landfills.

Researcher Helena Solo-Gabriele said that arsenic contamination in a layer of sand underneath one of the decks had arsenic levels 15 to 30 times higher than background levels, while water that percolated through the sand also was contaminated by the toxic metal. “Only a small fraction leaches in any given year,” Solo-Gabriele said. But because the wood can be in the ground for several years “the impacts can be significant, especially given the high concentrations of arsenic in the wood itself.”

Previous studies on the arsenic leaching problem prompted the wood products industry to phase out CCA products for residential use in 2003, but CCA treated wood can still be used in utility poles and industrial timbers. The researchers suggested that authorities may want to carefully consider what should be the final resting place for CCA-treated wood that has been taken out of service. “What’s important for people to realize is that arsenic is relatively mobile, so it’s something we have to be relatively concerned about – how to manage this huge stock of CCA wood that remains to be disposed of,” said co-researcher Tim Townsend.

One solution may be the use of lined landfills but Florida law does not require that construction-and-demolition landfills be equipped with linings. Additionally, the cost of lining landfills may put many landfills out of business and encourage illegal dumping.

Source: University of Florida

, ,

Comments are closed.

USA STOCK 40

USA STOCK 40" Razor Sharp Samurai Katana Sword Full Tang Handmade Shirasaya

$55.55



 Wood Dugout 4” With Self Cleaning, Glass@Metal Bat, Built In Cleaning Rod picture

Wood Dugout 4” With Self Cleaning, Glass@Metal Bat, Built In Cleaning Rod

$12.39



25 PALO SANTO STICKS HOLY WOOD INCENSE STICK  picture

25 PALO SANTO STICKS HOLY WOOD INCENSE STICK

$11.99



6 Pack White Sage smudge Herb Cleansing 4

6 Pack White Sage smudge Herb Cleansing 4" W/2 Free Palo Santo holy Wood Stick

$10.99



THINLY CUT 1/2 LB (55-60 Sticks Approx) Peru Palo Santo Holy Wood picture

THINLY CUT 1/2 LB (55-60 Sticks Approx) Peru Palo Santo Holy Wood

$13.90



ASSISTED POCKET Folding Blade KNIFE Tactical Survival Rescue Outdoor Camping EDC picture

ASSISTED POCKET Folding Blade KNIFE Tactical Survival Rescue Outdoor Camping EDC

$8.99



NEEDONE 23L Electronic Cigar Cooler Humidor Cedar Wood Shelves ELT Approved picture

NEEDONE 23L Electronic Cigar Cooler Humidor Cedar Wood Shelves ELT Approved

$176.99



 Wood Dugout 4

Wood Dugout 4" With 3" Ceramic One Hitter, Clean Out + 3" Metal One Hitter

$12.79



Durable Wooden Wood Smoking Pipe Tobacco Cigarettes Cigar Pipe W/ Pouch picture

Durable Wooden Wood Smoking Pipe Tobacco Cigarettes Cigar Pipe W/ Pouch

$9.99



2.5

2.5" 4 Piece Wood Finish Metal Herbal Herb Spice Smoke Tobacco Grinder Brown

$16.99



Powered by WordPress. Designed by WooThemes