Which statement is true about the potential environmental impact on local water by both surface and underground mining?(1 point) Responses
1 Both types of mining can lead to a lowered water table. Both types of mining can lead to a lowered water table.
2 Both types of mining cause high risk of sediment runoff. Both types of mining cause high risk of sediment runoff.
3 Both types of mining can cause acid and heavy metals to get into local water. Both types of mining can cause acid and heavy metals to get into local water.
4 Both types of mining lead to overburden clogging small local waterways.