I suspect oil/coal shills here.
I thought the same thing but a brief skim of their donor list indicates otherwise, an easy to find annual report is also not something commonly available for the myriad of FF front groups.
Having said that, the last line of the summary is oddly misleading, the phrase "but an environmental group claims" should read "but federal wildlife officers claim". It was the Feds who observed "a streamer every 2min", which by simple linear extrapolation is ~25k/yr, they became alarmed and requested the construction halt. Notice they have not called for a halt to operations. I think a closer look is certainly warranted and Federal Wildlife people would appear to be the appropriate group to be doing the looking. Where the environmental group actually fit into the story I'm not sure, if they were the ones who called in the feds, then good on 'em for not turning a blind eye to a politically inconvenient truth.
Disclaimer: Self confessed "greenie" long before greenpeace and science parted ways in the 80's.