Surface-water information shall be described, including the name of the watershed which will receive water discharges, the name, location, ownership and description of all surface-water bodies such as streams, lakes, ponds, impoundments, and springs, the location of any water discharge into any surface body of water in the proposed permit and adjacent areas, and information on surface-water quantity and quality sufficient to demonstrate seasonal variation and water usage. Water quantity and quality descriptions shall include, at a minimum:
  (1) water-quantity data on present water usages, and minimum, maximum, and average discharge conditions which identify critical low flows and peak discharge rates of streams sufficient to identify seasonal variations in flow rates; and
  (2) water-quality data to identify the characteristics of surface waters in, discharging into, or which will receive flows from surface or ground water from affected areas within the proposed permit area, sufficient to identify seasonal variations, showing:
    (A) total dissolved solids in milligrams per liter or specific conductance corrected to 25 degrees C;
    (B) total suspended solids in milligrams per liter;
    (C) acidity and alkalinity information if there is a potential for acid drainage from the proposed underground mining operation;
    (D) pH in standard units;
    (E) total and dissolved iron in milligrams per liter;
    (F) total manganese in milligrams per liter; and
    (G) such other information as the Commission determines is relevant.

Source Note: The provisions of this §12.175 adopted to be effective April 7, 1997, 22 TexReg 3093; amended to be effective November 4, 1997, 22 TexReg 10640.