In the examples you provided environmental issues are caused possibly even health risks, I never heard of a bandit sign that killed somebody or put a hole in the o-zone layer.

How do you get a guest estimation for an initial lot count, do you figure it of a 10% 15% or 20% land loss to environmental, road ingress/egress, then divide that by the base zone (the per lot minimum) / total available land ?

The wacko environmental left will have run of the government.

Environmental issues: -Old HVAC appears to have asbestos insulation in the basement.

For example historical / environmental departments need to approve specific issues with property or building.

Environmental changes and how it is effect to country's  financial and social life.......!

And, here I thought those on the left coast were suppose to be more environmentally astute ;-) ... maybe not as esoteric as one might believe.

Proper due diligence includes an Asbestos Survey, Lead (paint and ceramic tile) Survey, Property Condition Assessment (ASTM E2018 - I helped write it), and for many properties, a Phase I Environmental Site Assessment.

Or you hire an environmental firm to do the job - they will seal the area while working and check air samples afterward, and they handle all disposal too.

Now you have the environmental asbestos issue on top of the water clean up efforts - not a good combination.