This is a distinctively valuable thread, so let's not delete it. If 100% of the peeps in the Zone subscribed to the wilderness "Leave No Trace" ethic, then there would be no problem.
But they don't, so the only real answer to the problem is to collect some amount of money per peep which pays to remove waste from the mountain's watershed.
Which is legitimately the subject of a separate thread.
Fork* this thread!
* Send each line of discussion off separately.
Verum audaces non gerunt indusia alba. - Ipsi dixit MCMLXXII