Public to have say on reducing pollution from Powys mine (Dylife)&

Although the river fails to meet various standards of cleanliness, are the levels of metals actually high enough to do damage?

Chris.
 
The problem here is more to do with the dumps that were reworked (particularly for zinc, which tended to be discarded by the earlier miners). The main issue is to do with diffuse pollution from these tips, rather than point discharges, which are 'flushed' particularly after storm events (which are now a more regular occurrence). I found this to be the case when I carried out a monitoring regime for a year on Dyfngwm (just over the ridge on the Clywedog catchment) over twenty years ago.
 
Apparently Zinc is one of the more problematic metals - Force Crag in the Lake District has a similar problem, but there a remediation scheme has been put in to great effect.

I'm still not sure what the consequences of not doing anything are though.

Chris.
 
ChrisJC said:
Apparently Zinc is one of the more problematic metals - Force Crag in the Lake District has a similar problem, but there a remediation scheme has been put in to great effect.

I'm still not sure what the consequences of not doing anything are though.

Chris.
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Im sure you know if you weld galvanised the zink burn off (whispy yellow smoke) is arsenic!
Zink is also highly pollutant to watercourses, we are currently trying to price a pond dipping platform for a country park but are struggling to get the aquatic safe paint they require, they wont accept just galavanised as it will harm the aquatics.

so yes you are probably right about zink
 
BikinGlynn said:
Im sure you know if you weld galvanised the zink burn off (whispy yellow smoke) is arsenic!
Zink is also highly pollutant to watercourses, we are currently trying to price a pond dipping platform for a country park but are struggling to get the aquatic safe paint they require, they wont accept just galavanised as it will harm the aquatics.

so yes you are probably right about zink
Click to expand...
I know all too well about welding galv 😳😫 evil stuff
 
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