[Vwdiesel] Fw: Local News - Diesel exhaust's dangers high here(fwd)

[Roger Brown]

LBaird119 at aol.com wrote:
> 
>   Gee, a LOT of unsubstantiated claims in that article.  NO comparrisons
> because the article wouldn't stand.  They list the number of vehicles that
> are diesel but not gas nor percentage of overall.  I'd like to see ANY proof
> or even promissing studies that link diesel exhaust conclusively to cancer.
> Even though everyone knows that smoking CONTRIBUTES heavily to
> cancers, it's still hard to PROVE it does since there are many people
> who smoke that don't get it and others that have never really been
> around it that do. Diesel exhaust is going to be hundreds of times if
> not thousands of times more difficult to prove?
>   They state that diesel exhaust "triggers" asthma.  I believe that but
> that meas triggers an attack not the onset.  They point out how easily
> a particle trap can be added.  They don't say that it would have to be
> emptied several times a day from what I understand.
>   I remember Jake found an article from London I believe.  The local
> city or transit mechanics, who started the diesel trucks/busses every
> day indoors, demonstrated BETTER overall health than the general
> population. It was by a small margin but the silicone settlements were
> based on much less than that!
>   Jake's graduating "persuasive speech" was an arugument in favor of
> diesels and pointing out such misconceptions as the dangers of the
> exhaust were put into proper perspective.
>   Do a quick search on PM - 10 partuclate matter.  A VERY small
> percentage was from diesels.  About 3/4 of it is silica based.... dust.
> ALL vehicles contribute fairly heavily to that.  Diesel's tires don't stir
> up more dust than gasser's.  They'll probably try to imply that next!
>      Loren


Here is a post from last year:

gary wrote:
> 
> Don't let the anti-diesel crowd fool you.
> 
> Take a look at this (this is one report of many)
> 
> http://mutage.oupjournals.org/cgi/content/abstract/18/5/429
> 
> In short, in a g/km weighting, gas and diesels produce equal amounts of
> carcinogens. However, the report says that diesel indeed produced more
> particles than gasoline, but DNA Binding of gasoline particle-bound PAH
> components were more pronounced than diesel.
> 
> Gasoline particles are smaller in size than diesel, and are able to
> travel deeper into the lungs.
> 
> Hopefully in 2006, the EPA mandate of low sulfur diesel will reduce PM
> emissions of diesels significantly.

I like some of the California (CARB) particulate data:
        http://www.arb.ca.gov/aqd/oldpm10/a2bmd97.htm

Most of the highest PM10 levels occur where?  In the deserts (blowing dust, especially in the Owens Valley where LA has siphoned
off all the surface water) and the mountains (darn pine trees and the haze they produce).  I guess reducing the added
particulates from diesel and gasoline is a good thing, but particulates won't be eliminated.


--
   Roger