Quote:
Originally Posted by oil pan 4
I never said dirtier is better.
Taking most the Hg and PM out of coal exhaust is good.
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Your right,it it's way better.
Hexavalent chromium is troubling some investigators,who'd like to see drinking water standards 5,000-times lower than regulations allow.
Coal ash/dumpsites are the largest source for it.What leaches into water supplies is nearly 100% hexavalent chromium,the most toxic form (carcinogen),whether breathed in as a dust or consumed when drinking.It's why people freaked during last year's hurricane/severe rain event flooding into the coal ash repositories,and subsequent release.(you can't put the genie back in the bottle)
Nasty!
Arsenic is an issue also,but I think that between scrubbers and electrostatic precipitators they catch all that.