Posted on 03/17/2017 2:34:09 PM PDT by BenLurkin
The company won’t be permitted “to resume operations of any equipment with the potential to emit hexavalent chromium until SCAQMD determines that the average of the three most recent samples, collected over about one week, are below 1.0 nanograms per cubic meter,” Atwood said.
Along with the California Air Resources Board, SCAQMD also has, since Dec. 23, monitored air quality at six Paramount schools, where recorded average levels have been below 0.3 nanograms per cubic meter.
...
Hexavalent chromium is associated with lung cancer when inhaled over long periods, “typically years to decades,” according to Atwood.
(Excerpt) Read more at losangeles.cbslocal.com ...
Most manufacturing got overtaxed and regulated out of LA County long ago. The ARB is just getting rid of the stragglers now. The bureaucrats get paid to destroy the last vestige of industry from the once great State.
I wonder if this is like Radon, remember that?
The magical unit of measure there was piccouries per liter.
My brother in law made a fortune on that scam back in the 90s.
the city of paramount used to be a thriving hub of medium
sized manufacturing. Bunch of WWII vets opened up machine shops, welded shops, etc, etc and made stuff that people wanted to
buy.
Kid you not. These guys were straight outta the 19th century in their approach to the environment.
The nano gram limit is so low that is so low it was below the measuring treshold of of most analytic systems until a frw years ago
FWIW, chromium is an essential trace element critical for human physiology and chromium levels in the nano gram per cubic metre range is essential for human health
True.
I grew up in Paramount and went to Grove School, Paramount Junior High, and Paramount High School. A lot of people whose families were from Missouri, Iowa and Oklahoma were my friends, as well as second generation Mexican-Americans.
Paramount changed when gangs from Central America moved in, crime increased, and the good people decided to move.
True but tri not hex. hex is bad juju.
Chromium exists in a series of oxidation states from -2 to +6 valence. The most important stable states are 0 (elemental metal), +3 (trivalent), and +6 (hexavalent).
Chromium in chromite ore is in the trivalent state; industrial processes also produce the elemental metal and hexavalent chromium.
The health effects of chromium are primarily related to the valence state of the metal at the time of exposure. Trivalent (Cr[III]) and hexavalent (Cr[VI]) compounds are thought to be the most biologically significant. Cr(III) is an essential dietary mineral in low doses. Cr(VI) compounds are carcinogenic. Cr(VI) is generally considered 1,000 times more toxic than Cr(III) [EPA 1998; ATSDR 2000; Dayan and Paine 2001].
Chromium exists in three common stable valence states: chromium (0), (III), and (VI).
Cr(III) is an essential dietary nutrient. Its deficiency in the body has been associated with diabetes, infertility, and cardiovascular disease.
Cr(VI) is carcinogenic.
The metallurgical, chemical, and refractory industries are the fundamental users of chromium.
https://www.atsdr.cdc.gov/csem/csem.asp?csem=10&po=4
i wonder did the good jobs leave first and then the gangbangers moved in ?
Not really to the point of your article on chromium but I tried to figure out how many dangerous substances I’d been exposed to at my jobs. They ranged from SO2 to asbestos. I finally decided I must have died about ten years ago.
you don’t see chrome bumpers on cars anymore. Chromic acid isn’t used anymore, it was replaced by tannic acid. Chrome yellow pigment was used to paint school busses bright yellow. Now they paint them yellow ochre.
One other factor I forgot: the state used eminent domain to build the Century Freeway. That took out a lot of homes and small businesses out of northern Paramount, Hollydale, and southern Downey. The gangbangers moved in afterward.
eminent domain is nearly always evil
especially to build a urban highway
We will probably have to use eminent domain to build future pipelines and the border wall.
“My brother in law made a fortune on that scam back in the 90s.”
People made a fortune off asbestos in the 80’s, Radon in the 90’s and mold in the 2000’s.
I have no idea what the next environmental boogey man will be.
pipelines shouldn’t be eminent domained - it’s a private business ( thankfully )
the border wall is fine
because the border wall is akin to a fortress which is one of very few items which has a clear and compelling eminent domain
private property is sacred
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