The Pikes Peak Area Council of Governments will work to mobilize the region to watch ozone levels and take certain steps on high ozone days.
Environmental Protection Agency (EPA)
The EPA said it would follow strict safety guidelines when drilling the test well into the American Tunnel.
The Gold King mine is not on the list of 23 sites chosen for this summer's work.
The EPA and National Park Service found harmful nitrogen pollution was 38 percent higher than the 2017 target level.
State officials said this approach lets companies determine how much a site will likely pollute, so regulators can take that into account when they issue air pollution permits later.
Sunnyside Gold Corp. has been resisting attempts made by the Environmental Protection Agency to get the company to pitch in money for the cleanup.
Many mines pose the chronic problem of relentless pollution.
PFAs are found in some non-stick coatings, including from a firefighting foam used by the Peterson Air Force Base.
An Associated Press investigation found there could be more premature deaths, greenhouse gas emissions and other impacts.
The documents may have evidence of residual plutonium contamination and other ongoing environmental dangers.