1.describe how the hardness-based CMCs and the Biotic Ligand Model (hardness DOC based) CMCs (or hazard quotients) compare in terms of reaches of

1.      describe how the hardness-based CMCs and the Biotic Ligand Model (hardness & DOC based) CMCs (or hazard quotients) compare in terms of reaches of streams where the water-quality criteria are exceeded. In other words, which criteria delineate the most restricted area of impairment and which one delineates the most extensive?