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| Base case | Hypothetical scenario (linear model) | Hypothetical scenario (exponential model) | |
|---|---|---|---|
| Extraction costs | £22,948,628 | £21,018,002 | £22,234,639 |
| Restoration costs | £10,427,070 | £9,549,860 | £10,102,659 |
| Total costs | £33,375,698 | £30,567,863 | £32,337,298 |
| Total savings for the population | £2,807,836 | £1,038,400 | |
| Average savings per person | £4.10 | £1.52 | |
