Climate Change

[bodywhomper]

Dp

[Trackhead]

The lower river oxbow busted through about 2018…..

[bodywhomper]

As they do . Lots of damage?

[Trackhead]

None significant just a walking trail

[bodywhomper]

Ideally, that’s the type of land use you put in those sort of areas.

I recently read that the state of CA’s recent-ish catastrophic flood planning/modeling did not consider the modeled ARKStorm, which is basically the known large Central Valley flood that occurs every couple hundred years.

[k2skier112]

Here's an article from Canucistan

https://www.ncbi.nlm.nih.gov/pmc/art...lear%20weapons.

Uranium mining has widespread effects, contaminating the environment with radioactive dust, radon gas, water-borne toxins, and increased levels of background radiation.

Uranium mining is the first step in the generation of both nuclear power and nuclear weapons. Nuclear power plants produce routine radioactive emissions in air and water, produce nuclear waste, and create conditions for disasters similar to Chernobyl and Fukushima.

[Bunion 2020]

There was a piece on CBS last night about the future of undersea mining, especially for minerals used in battery tech.

https://www.cbs.com/shows/video/eb69...BMFG68rw5DeKv/

While it sounds promising the oceans are a fragile place.

[BFD]

That flood disaster in Juneau. Development was probably allowed because it was outside the boundaries of the FEMA-established floodplain. I don’t know if the borough has regs in-place for protecting those developed properties from erosion due to that kind of event.

Crazy amount of politics involving the Mendenhall. People were dumping cars in the river to try and prevent flooding since they started building there. In 1971 the borough and state asked the army corps to study the river to address flooding. The army corps came up with a standard project flood of 47,000 CFS. I think this event hit 26,000. Not sure when the First FEMA maps were produced. They did see continual revisions. Each time the public and borough challenged the revisions as people did not like the idea of insurance going up. Lisa Murkowski sponsored the Homeowners Flood Insurance Affordability Act of 2014. This was response to Juneau claiming the new maps were not accurate and causing financial harm to homeowners. After the jökulhlaups started in 2011 the borough worked with the feds to bring in money for mitigation. The homeowners rejected the offer. They did not like the costs they were asked to share. would be interesting to know what FEMA revisions were objected to and if those homes were affected by this flood. Not living in Juneau and not having followed this issue I can only offer an opinion. Not much flat, easy buildable ground in the area. The Juneau borough was not going to let it go undeveloped.

[BCMtnHound]

Here's an article from Canucistan

https://www.ncbi.nlm.nih.gov/pmc/art...lear%20weapons.

Uranium mining has widespread effects, contaminating the environment with radioactive dust, radon gas, water-borne toxins, and increased levels of background radiation.

Uranium mining is the first step in the generation of both nuclear power and nuclear weapons. Nuclear power plants produce routine radioactive emissions in air and water, produce nuclear waste, and create conditions for disasters similar to Chernobyl and Fukushima.

While not disputing the findings of that paper, these effects are true of most mining in Canada (and most of the rest of the world to some degree or other). We have a defunct uranium mine near to town here, and we were planning road and forestry development within the boundaries of the claim. Lots of funky coloured soil and leaching. Domestic water use in nearby creeks (for much of the last 100yrs). We brought in the mining and geology experts to assist in designing the mitigation for any earthworks as park of our development. We stayed away from a couple identified deposits/tailings areas, made consideration for surface drainage, and general health procedures for workers (from equipment operators to tree planters).
The one thing that the experts kind of chided us on is that we should be following these protocols where ever we are exposing the soil, anywhere in the country. There is so many micro deposits not identified for claim or extraction that one would never know if they are digging through the nasty. Acid rock and leaching is something we manage in our road building efforts all the time, and near impossible to detect prior to opening the rock. Big money to mitigate the impacts once it is exposed however.

So the takeaway is that the risks identified in the paper are much more widespread than just a uranium mine. Sure opening concentrated deposits will have impacts, but the risk remains in any significant earthworks. Radon especially is one of those devils that is amazingly widespread, and most homes and businesses have done little to mitigate, especially older structures. And wash your hands and veggies well whenever digging in the backyard even.

[k2skier112]

While not disputing the findings of that paper, these effects are true of most mining in Canada (and most of the rest of the world to some degree or other). We have a defunct uranium mine near to town here, and we were planning road and forestry development within the boundaries of the claim. Lots of funky coloured soil and leaching. Domestic water use in nearby creeks (for much of the last 100yrs). We brought in the mining and geology experts to assist in designing the mitigation for any earthworks as park of our development. We stayed away from a couple identified deposits/tailings areas, made consideration for surface drainage, and general health procedures for workers (from equipment operators to tree planters).
The one thing that the experts kind of chided us on is that we should be following these protocols where ever we are exposing the soil, anywhere in the country. There is so many micro deposits not identified for claim or extraction that one would never know if they are digging through the nasty. Acid rock and leaching is something we manage in our road building efforts all the time, and near impossible to detect prior to opening the rock. Big money to mitigate the impacts once it is exposed however.

So the takeaway is that the risks identified in the paper are much more widespread than just a uranium mine. Sure opening concentrated deposits will have impacts, but the risk remains in any significant earthworks. Radon especially is one of those devils that is amazingly widespread, and most homes and businesses have done little to mitigate, especially older structures. And wash your hands and veggies well whenever digging in the backyard even.

Yes, you are correct, except for the added radiation of mining uranium

My point was, a lot of pro nuclear folks can be right of center, and they can also be anti EV, because of the hazards of lithium mining

Everything we do on this planet leaves some type of impact. Net zero, living off the grid...it all has an impact of some type. All we can do is limit that impact

[californiagrown]

Crazy amount of politics involving the Mendenhall. People were dumping cars in the river to try and prevent flooding since they started building there. In 1971 the borough and state asked the army corps to study the river to address flooding. The army corps came up with a standard project flood of 47,000 CFS. I think this event hit 26,000. Not sure when the First FEMA maps were produced. They did see continual revisions. Each time the public and borough challenged the revisions as people did not like the idea of insurance going up. Lisa Murkowski sponsored the Homeowners Flood Insurance Affordability Act of 2014. This was response to Juneau claiming the new maps were not accurate and causing financial harm to homeowners. After the jökulhlaups started in 2011 the borough worked with the feds to bring in money for mitigation. The homeowners rejected the offer. They did not like the costs they were asked to share. would be interesting to know what FEMA revisions were objected to and if those homes were affected by this flood. Not living in Juneau and not having followed this issue I can only offer an opinion. Not much flat, easy buildable ground in the area. The Juneau borough was not going to let it go undeveloped.

If the standard flood was modeled at 47k cfs, and this catastrophe was only 26k cfs, id say the folks were justified in calling out the corps for being unreasonably conservative. Things SHOULD get fucked up in 500 year events... it would be unreasonable to write code for such rare events.

That said, common sense says that if you build in the flat area around a river, you will deal with flooding at some point. there is a reason its a flat (flood) plain. Now double that paranoia for anything fed from a nearby fucking glacier!

[bodywhomper]

It looks to me that the issue with the Juneau flood was erosion and bank stability. That’s difficult to model and calculate, per my understanding working with hydrologist and modelers.

BFD, thanks for the info.

[Supermoon]

https://youtu.be/e47lHyQZ2I4

[k2skier112]

You know shits real when Bill Nye starts dropping F bombs

[SumJongGuy]

You know shit's real when Hawaii's on fire and mountain towns are underwater.. Sharks all over the northeast coast up to Cape Cod..

[mcphee]

^orcas are organizing, attacking, and teaching others to do the same

[SumJongGuy]

^orcas are organizing, attacking, and teaching others to do the same

I know. I started that thread in the Kayaking forum area. They take out the rudder first on the bigger boats...

[Stuntmonkey]

Nuclear power plants produce routine radioactive emissions in air and water, produce nuclear waste, and create conditions for disasters similar to Chernobyl and Fukushima.

CANDU reactors can't do what RBMK reactors did in Chernobyl / Fukushima.

[Harry]

CANDU reactors can't do what RBMK reactors did in Chernobyl / Fukushima.

I’m certainly not an expert, but I don’t think Fukushima was a RBMK reactor.


Sent from my iPhone using TGR Forums

[chaka]

Fukushima is a BWR/boiling water reactor design. CANDU is a PWR/pressurized (heavy) water reactor design. Neither designs are prone to prompt-critical reactions like RBMK.

[SumJongGuy]

No clue what the Sharon Harris plant is here but I do have a stash pf potassium iodide and Geiger counter and EMP detector with the rest of the shit I hope we never need.

[Cocximus]

I had some direct experience with a solar panel for the past two weeks in mostly desert areas. I learned its output quickly drops when the sun is not hitting it at 90°. Is this the same for commercial large scale power generating solar farms? What is the output % during a day for a solar farm? Yes, there's set-up for sun tracking panels but they are not common on big solar farms.

[SumJongGuy]

I had some direct experience with a solar panel for the past two weeks in mostly desert areas. I learned its output quickly drops when the sun is not hitting it at 90°. Is this the same for commercial large scale power generating solar farms? What is the output % during a day for a solar farm? Yes, there's set-up for sun tracking panels but they are not common on big solar farms.

Solar farm panels are on a pivoting bracket that keeps them pointed at the sun throughout the day,

[Stuntmonkey]

Solar farm panels are on a pivoting bracket that keeps them pointed at the sun throughout the day,

Not always. Many many farms are fixed position ones. I've built 4 200+MW farms and it was 50/50. The fixed position ones were inherently cheaper and easier to maintain, but efficiency was not great. The tracking ones were very efficient, but holy fuck they were the biggest pain in the ass to install, program and maintain. That said, both of the tracking ones were from a company called Soltec and they didn't have the best track record.

Example;

[Cocximus]

Yea, most big installations are fixed. So my question was, what does a 100mw solar farm put out from sunrise to sunset on a perfectly clear day.