Small impacts matter--the Kenai River is officially "polluted" by the motors of fishermen chasing salmon.
This is a barbecue of a couple of sacred cows. Salmon swimming through a soup of oil, gas, and exhaust, in "pristine" Alaska? All because good people like you and me are driving boats, fishing, and having a good time?
Note that wild Alaska salmon deserve "organic" status, according to some Alaska politicians.