More technology, not less, has always solved environmental problems. These problems have a tendency to go away as long as you allow people to develop the land with the latest and most efficient technology. (For an example, look at the cost of solar power and how it's dropping dramatically.)
Otherwise, I detail in part two how to deal with pollution in general (just like any damage to a lease, essentially).
RE: A Simplified Taxless State: A Proposal (part three of three)