#61
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The report itself admits that the Toxicity Characteristic Leaching Procedure (TCLP) is not without controversy. I do not accept the premise that the process represents conditions found in the typical municipal landfill. The procedure breaks the CRT into a 9.5mm size that I find reasonable... But then these pieces are "rotated at 30 rpm for 18 ( 2 h in a 12 vessel rotary extractor. The extract was filtered through a glass fiber filter of 0.8-ím pore size and the sample preserved using 2 mL of nitric acid per 500 mL of sample." Now you are breaking the glass nearly into its basic silica components. Remember, the 9.5mm size is just a maximum size... There are already many sand-like bits created by using a hammer to break down the crt, per the study's methodology. That 18 hour "rock tumbling" is not something I would expect to see occur in a landfill... At least not in a time frame where naturally-occurring lead might migrate through the same soil. Then they are using an acid to "digest" this mix into a sample that can be passed through flame spectrophotometer. Quote:
I am not alone in finding fault with this methodology. Below I began selecting relevant text from a 1999 letter sent to the EPA critical of the text methodology, and I've left it if anyone wants to read it. But in summary it sounds like whoever conducted the study used a method that would basically separate the silica from the lead and give the expected result. Consider that there is money to be made (and government bureaucracies to be propped-up) in re-classifying CRTs as hazardous waste. Funny how water sits inside lead pipes in municipal water systems, yet there is no "push" to replace these systems. Maybe the lobby group and the money just haven't arrived yet for that cause, but does that make it more or less of a risk to health? Quote:
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From Captain Video, 1/4/2007 "It seems that Italian people are very prone to preserve antique stuff." Last edited by Carmine; 01-27-2015 at 05:59 AM. |
#62
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...
Last edited by andy; 11-20-2021 at 03:40 PM. |
#63
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Again, questioning motivations... It may have been that policing the actual scrappage of something as easily disposed of as a circuit board is hard to do. Imagine just having to show your TV's curcuit boards are gone, then you can throw the CRT/cabinet in a dumpster. That's seriously going to cut into the revenue of the haz waste disposers (probably located in NJ). A similar parallel might be requiring scrappers to present "freon removal certifications" for fridges and A/C units. Do you think these items ever arrive in a shape recognizable as an appliance? The fridges are just empty shells and the condenser/evaporator just get shoved in with the old bedspings and aluminum siding.
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From Captain Video, 1/4/2007 "It seems that Italian people are very prone to preserve antique stuff." |
#64
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Curious... where does lead come from? Where do we get it?
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Charlie Trahan He who dies with the most toys still dies. |
#65
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Audiokarma |
#66
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"Tastes better, cause it's mined!"
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#67
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What are they going to do about the lead that's already in mines?? They'll have to get that out, too, so they can dispose of it properly. And who will pay for that??
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Charlie Trahan He who dies with the most toys still dies. |
#68
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The sad part is the eco commies are really that dumb...
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#69
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Uranium is also mined but I'm pretty sure if someone wanted to dump it in your water supply or backyard people would throw a fit.
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#70
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Let's not stray from what's really being argued. Lead is a common element in just about all soil. Of all the things one might find in a landfill, lead encapsulated within a glass matrix (not ground into dust and digested with acid before measurement with a flame spectrophotometer) is probably one of the least worrisome materials you'll find. Classifying CRTs as haz waste is a great money-maker for certain people. With the right test, you can separate the elements and justify the classification. We're all afraid of lead because we've seem the stories of kids eating a diet of lead paint chips... Thousands of times the expose one would receive from a lead pipe... Still quite common in municipal water systems. The hype is so intence, stores are afraid to sell used dishwasher because the might have an old copper/lead sweated fitting attached. Your odds of being beheaded are probably higher than health risks from used dishwashers, but which issue has already been addressed? Lobby groups, err I mean Governments, have their priorities!
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From Captain Video, 1/4/2007 "It seems that Italian people are very prone to preserve antique stuff." Last edited by Carmine; 01-27-2015 at 09:20 PM. |
Audiokarma |
#71
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Yeah, people get kind of attached to their hair, women especially.
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#72
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#73
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F o l l o w t h e m o n e y . . . . .
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Reece Perfection is hard to reach with a screwdriver. |
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