Any lime slaking facility used to mix quicklime with water is permitted by rule, provided the following conditions of this section are met:
  (1) the mixing vessel shall be horizontal;
  (2) the mixing vessel shall use interior mechanical agitation parallel to the bottom and agitate the water over the full length of the vessel;
  (3) quicklime shall be injected into the mixing vessel as follows:
    (A) where injection is from a pneumatic transfer system, the quicklime shall be injected at a point at least 12 inches under the surface of the agitated water; or
    (B) where injection is from a non-pneumatic conveying system unloading at the top of the vessel, emissions from any vent on the vessel shall be controlled by an appropriately sized wet scrubber;
  (4) there shall be no visible emissions (other than uncombined water).

Source Note: The provisions of this §106.374 adopted to be effective March 14, 1997, 22 TexReg 2439; amended to be effective September 4, 2000, 25 TexReg 8653