Lake Combie sediment removal Report 2020
>post from Richard Engstrand
.
Those of you who followed the pilot project to remove mercury at Combie reservoir, might want to read/scan this update.
Some things I take away,
1. - They originally planned to remove 70,000 cubic yards of sediment, this update only covers 48,000 cu. yds.
2. - Total cost of this "new" phase is about 4 million, added on to the 5-6 million already spent.
3. - Yep, their suction dredge centrifuge costs WAY more to process sediment than "working in the dry"
4. - They claim they got 37 lbs of mercury, which is about 30 lbs more than i thought they'd recover.
I gave up reading, so I don't know if they're gonna continue or not.
They originally stated that gold recovery would almost offset the whole cost of the project.
But on page 70, they show an avg. price of $.47 per ton of gold actually recovered
Whichever..if they take this operation to the 100 plus other "mercury impaired reservoirs" in the state, it'll definitely cost BILLIONS...........
lots if Photos of mining equipment we use to mine gold also
warning: large file, 2307 pages
https://nidwater.specialdistrict.or...voir+Sediment+and+Mercury+Removal+Project.pdf
>post from Richard Engstrand
.
Those of you who followed the pilot project to remove mercury at Combie reservoir, might want to read/scan this update.
Some things I take away,
1. - They originally planned to remove 70,000 cubic yards of sediment, this update only covers 48,000 cu. yds.
2. - Total cost of this "new" phase is about 4 million, added on to the 5-6 million already spent.
3. - Yep, their suction dredge centrifuge costs WAY more to process sediment than "working in the dry"
4. - They claim they got 37 lbs of mercury, which is about 30 lbs more than i thought they'd recover.
I gave up reading, so I don't know if they're gonna continue or not.
They originally stated that gold recovery would almost offset the whole cost of the project.
But on page 70, they show an avg. price of $.47 per ton of gold actually recovered
Whichever..if they take this operation to the 100 plus other "mercury impaired reservoirs" in the state, it'll definitely cost BILLIONS...........
lots if Photos of mining equipment we use to mine gold also
warning: large file, 2307 pages
https://nidwater.specialdistrict.or...voir+Sediment+and+Mercury+Removal+Project.pdf
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