Green Building Elements

Please visit an updated post on radon in granite countertops here:  A Rational Discussion on Radon in Granite Countertops

The Marble Institute of America better get ready for another round of fighting because the issue of radon in granite countertops is back. For the past decade, the MIA has been trying, with much success, to squash the rumor that granite countertops have the potential to add dangerous amounts of radon in the home. A new study being conducted by Houston area not-for-profit BuildClean is raising old fears about the dangers of granite countertops, and its preliminary results show that while most granite countertops in the study contain very little to no radon at all, the countertops that do contain radon have levels that are frighteningly high. While consumers can be secure in the fact that the vast majority of granite is perfectly safe, a small percentage is still in question, and no independent scientific study exists to assuage consumer fears.

The first issue of Solid Surface in 1995 explored the possibility that granite countertops may pose a health risk. Soon, the MIA issued their response, which attacked the credibility of the science involved in the study as well as the fact that the advertisers in the journal included companies that competed with granite countertop manufacturers. But one phrase in the response, a highlighted phrase no less, is troubling: “…actual levels of radon gas emmissions are so low as to be insignificant and generally represent no threat.” As a father, I don’t want to be assured that there is “generally” no threat to my family. I want to know there is no threat. And after BuildClean* found that 3 of 95 granite countertops contained harmful amounts of radon, would the MIA consider such a small number to be “generally” no threat? I’m sure the owners of those three countertops are not reassured. Read the rest of this entry »

Restaurants here in San Francisco open, and close, almost as often as the fog rolls in so we don’t usually pay an extreme amount of our precious attention to another restaurant du jour. Mixt Greens recently opened but they don’t qualify for new kid on the block status nonetheless they do deserve green props. Thus I direct my attention to their third installment of the Mixt Greens empire.

This third location, located in SoMa, just opened and used zero-VOC paints to improve the air quality, and I could definitely smell the food and not the fumes. They even used recycled paint to cover their ceiling. I didn’t find any bamboo or cork for the flooring but something better as they used an unfinished concrete floor with 50% flyash content. That high flyash content along with the fact that the floor will last a long time (plus it’s easy to clean) makes that choice a no-brainer. Read the rest of this entry »

Today’s news included the story that testing on FEMA-supplied temporary housing trailers in Mississippi and Louisiana has found extremely high levels of formaldehyde in the air, despite earlier reports issued by FEMA indicating that there was no problem.

Tests by the Centers for Disease Control and Prevention on more than 500 trailers in Louisiana and Mississippi showed formaldehyde levels that were five times higher than levels in a normal house. The levels in some trailers were nearly 40 times what is normal.

The CDC is saying that people living in these trailers “should move out quickly — especially children, the elderly and anyone with asthma or another chronic condition.”

Read the rest of this entry »