Audenried Tunnel
... that the Audenried Tunnel contributes up to 80% of Catawissa Creek's acidity?
... that the <b id="mwC-Q"><a href="./Audenried_Tunnel" id="mwC-U" rel="mw:WikiLink" title="Audenried Tunnel">Audenried Tunnel</a></b> contributes up to 80% of <a href="./Catawissa_Creek" id="mwC-Y" rel="mw:WikiLink" title="Catawissa Creek">Catawissa Creek</a>'s acidity?