Eugene/Lane County needs a real anti-noise ordinance with teeth. Last year, Cuthbert was astounding loud, so using them as a yardstick isn't the best idea. For every person who complains there are probably ten who were really bothered but didn't complain.
Today's super amplifiers can knock birds out of the air at ten miles. Kind of an exaggeration, but not much.
And if that ordinance included those cars that have bass that rattle windows, it would be even better.
Noise pollution is dangerous, it really is. Alton Baker is a beautiful place, but it is no place for a loud rock venue. There was a concert at Cuthbert last year that had to be experienced to be believed. Standing on the Defazio footbridge one could not only hear the music, one could feel the vibrations in an absolutely scary way.
Take loud music out of Alton Baker...it is a sanctuary for animals and people who love peace and quiet. Find some gravel pit out of the city, or wherever. 
Hugh Massengill, Eugene Oregon