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Fireworks likely caused water contamination at Mount Rushmore (2016)

130 点作者 johntfella超过 1 年前

7 条评论

Guzba超过 1 年前
From another study:<p>&quot;Perchlorate is an oxidizer used in fireworks. Though fireworks displays are held over Lake Biwa, which supplies water to Kyoto, the city’s water treatment process lacks the ability to remove perchlorate. This study investigated perchlorate contamination in source and tap water resulting from a fireworks display. During 2016, the perchlorate concentration in the source water increased to 22.3 μg&#x2F;L during the 19 hours following the display and then decreased to ,0.5 μg&#x2F;L during the 43 hours following the display. The perchlorate concentration in the tap water increased to 13.6 μg&#x2F;L during the 35 hours following the display, and then gradually decreased... it took 11–29 days to decrease its concentration in tap water in Kyoto to &lt;0.5 μg&#x2F;L.&quot;<p>Flow behavior of perchlorate from a source lake to a water supply tap following fireworks displays <a href="https:&#x2F;&#x2F;iwaponline.com&#x2F;wpt&#x2F;article&#x2F;14&#x2F;3&#x2F;695&#x2F;69039&#x2F;Flow-behavior-of-perchlorate-from-a-source-lake-to" rel="nofollow">https:&#x2F;&#x2F;iwaponline.com&#x2F;wpt&#x2F;article&#x2F;14&#x2F;3&#x2F;695&#x2F;69039&#x2F;Flow-behav...</a>
ricardobeat超过 1 年前
In case anyone else was wondering why this matters, perchlorate interferes with thyroid hormones and can affect brain development in children. Proposed regulation sets the limit in water to either 18, or 90 micrograms per liter.<p>Source: <a href="https:&#x2F;&#x2F;www.epa.gov&#x2F;sdwa&#x2F;perchlorate-drinking-water-frequent-questions" rel="nofollow">https:&#x2F;&#x2F;www.epa.gov&#x2F;sdwa&#x2F;perchlorate-drinking-water-frequent...</a>
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rokkitmensch超过 1 年前
I love everything about fireworks. The explosions, the noises, the colors, the risk, the lighting-shit-on-fire...<p>But I recently moved to a high desert&#x2F;ski town where fireworks are largely banned, and outright dangerous to the entire city for about half the year, and I&#x27;m willing to accept this tradeoff for access to forests, mountains and streams.<p>The local city launches the annual displays from the tallest butte in town, and there are neighborhood pools on which side of the butte will catch fire every year. The local FD uses that inevitable fire as a suppression exercise, which is nearly as entertaining as the fireworks display.<p>I&#x27;m perhaps jaded though, in being willing to make this tradeoff. I worked for a few years in the downtown Austin office of a major tech co. right on the river. We&#x27;d congregate in the cafeteria and in the rooftop garden for eye-level firework viewing. It was absolutely glorious.<p>Side anecdote: on NYE you could walk the garden perimeter and see fireworks at the horizon line in every direction. God Bless Texas.
akira2501超过 1 年前
The probable cause, of one particular case, inside of a national park, directly underneath where fireworks were displayed. If only the full title of the article managed to convey all of this. :|
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spondylosaurus超过 1 年前
I have a bunch of those air purifiers that auto-adjust their fan speed when they detects poor quality air + I live in a place with very permissive laws around fireworks... and the purifier under my kitchen window was going crazy last night.<p>You&#x27;d hear a big pop over the roof, five seconds pass, and then the purifier would kick up a notch for the next minute or so. Repeat until the neighbors&#x27; firework stash ran out.
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khaki54超过 1 年前
Perchlorate can interfere with iodine uptake by the thyroid gland. It is used as a drug to combat hyperthyroidism. It also occurs naturally and is continually produced in the atmosphere. There is no maximum contaminate level goal (MCLG) set and thus no maximum level set for groundwater.<p>They did setup some interim guidance back in 2008, and advised 15ppb. Overall, doesn&#x27;t look super dangerous.
elijahbenizzy超过 1 年前
I honestly believe we should ban fireworks and firework shows across the country. Not only are they (apparently) bad for the environment and likely to cause wildfires*, have the potential to trigger PTSD**, but they also make the large majority of dogs terrified for at least two nights of the year. As humans, our symbiotic relationship with dogs is one of our greatest assets -- we owe them better than this. Drone shows + music are just as cool.<p>* <a href="https:&#x2F;&#x2F;www.readyforwildfire.org&#x2F;more&#x2F;fireworks-safety&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.readyforwildfire.org&#x2F;more&#x2F;fireworks-safety&#x2F;</a><p>* <a href="https:&#x2F;&#x2F;www.kron4.com&#x2F;news&#x2F;bay-area&#x2F;fireworks-spark-dozens-of-bay-area-fires&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.kron4.com&#x2F;news&#x2F;bay-area&#x2F;fireworks-spark-dozens-o...</a><p>* <a href="https:&#x2F;&#x2F;www.nfpa.org&#x2F;education-and-research&#x2F;home-fire-safety&#x2F;fireworks" rel="nofollow">https:&#x2F;&#x2F;www.nfpa.org&#x2F;education-and-research&#x2F;home-fire-safety...</a><p>** <a href="https:&#x2F;&#x2F;www.ptsd.va.gov&#x2F;understand&#x2F;what&#x2F;fireworks_ptsd.asp" rel="nofollow">https:&#x2F;&#x2F;www.ptsd.va.gov&#x2F;understand&#x2F;what&#x2F;fireworks_ptsd.asp</a><p>** <a href="https:&#x2F;&#x2F;www.va.gov&#x2F;hines-health-care&#x2F;stories&#x2F;how-your-fireworks-may-affect-americas-veterans&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.va.gov&#x2F;hines-health-care&#x2F;stories&#x2F;how-your-firewo...</a>
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