quot;,-=!Z4"@&!$4&0&!6&,@,6")'@.!1",@,6")'@!'-*!6&,6%'34")'@!5'%"'1@&0!'33&'%!$,! 4'5&!4'*!@"$@&!,%!-,!&++&)$!,-!0$%&'(!)4&("0$%2.!3'$&%-0!,+!'$(,034&%")!?&$! !" /> Chemical Changes in Virginia's Brook Trout Streams: An Analysis of Statewide Surveys 1987-2010