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| Base case | Hypothetical scenario (linear model) | Hypothetical scenario (exponential model) | |
|---|---|---|---|
| Extraction costs | £22,948,628 | £17,502,923 | £17,313,302 |
| Restoration costs | £10,427,070 | £7,952,729 | £7,866,571 |
| Total costs | £33,375,698 | £25,455,652 | £25,179,873 |
| Total savings for the population | £7,920,046 | £8,195,826 | |
| Average savings per person | £11.57 | £11.97 | |
