The Inuit ANWR brief you provided was created by a non-profit that has been pushing ANWR development since 1992 called Arctic Power. Or so they say. I would love to see actual information supporting your suggestion that the Inuit support this development.
I have yet to hear anyone chime in with experiences in the oil field. So I will.
It does not matter how you chew it, any oil pad requires more land than it's foot print. If you have a 2000 acres of land and put a exploratory pad in the middle... how are you getting there? The number of trips by tractor trailers to get equipment, tools, water, etc is a LOT. VERY heavy machinery traveling over permafrost... terribly destructive.
But aside from all that, as someone who's actively worked in the oil field as recently as 2015, I can tell you that turning a blind eye to environmental hazards is common place. Spills are under reported or not reported. Blow outs happen, iron breaks and containment pools can leak.
I've worked on rigs in Oklahoma, Arkansas and the plains and mountains of Colorado. I've seen it all, I've even seen the HSE guy responsible for coming out and measuring the water for contamination to make sure it doesn't surpass certain thresholds literally, move down stream from the required spot because levels were too high, to get a better, acceptable sample.
That's my two cents. Now get a better source for your Inuit claim than that non-profit lobbying propaganda pamphlet.