(a) Facilities or sources that meet the conditions of one or more of the paragraphs of this subsection are considered by the commission to be de minimis, which means that registration or authorization prior to construction is not required:
  (1) categories of facilities or sources included on the list entitled "De Minimis Facilities or Sources;"
  (2) facilities or sources at a site which, in combination, use the following materials at no more than the rate prescribed in subparagraphs (A) - (F) of this paragraph:
    (A) cleaning and stripping solvents, 50 gallons per year;
    (B) coatings (excluding plating materials), 100 gallons per year;
    (C) dyes, 1,000 pounds per year;
    (D) bleaches, 1,000 gallons per year;
    (E) fragrances (excluding odorants), 250 gallons per year;
    (F) water-based surfactants/detergents, 2,500 gallons per year;
  (3) facilities or sources located inside a building at a site which meet the following sitewide emission rate caps based on the July 19, 2000 Effects Screening Levels (ESL) list without the addition of control devices, as defined in §101.1 of this title (relating to Definitions).
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  (4) any individual facility, source, or group of facilities or sources which the executive director determines to be de minimis based upon:
    (A) proximity to receptors;
    (B) rate of emission of air contaminants;
    (C) engineering judgment and experience; and
    (D) determination that no adverse toxicological or health effects would occur off property.
(b) De minimis facilities or sources at a site which are subsequently determined by the executive director to be in violation of any commission rule, permit, order, or statute within the commission's jurisdiction, will no longer be considered de minimis and must obtain registration or authorization under this chapter or Chapter 106 of this title (relating to Permits by Rule).
(c) The "List of De Minimis Facilities or Sources" will be maintained in the commission's Office of Permitting, Remediation, and Registration in Austin, with copies maintained in the commission's regional offices, and on the commission's home page on the World Wide Web.
  (1) Persons may petition the executive director to amend the "List of De Minimis Facilities or Sources" or the executive director may amend the list as necessary.
  (2) When amending the list to add or delete categories of facilities, sources, or groups of facilities or sources, the executive director will consider, at a minimum, the following:
    (A) typical operating scenarios;
    (B) typical design and location;
    (C) the types and rates of air contaminants emitted;
    (D) engineering judgment and experience; and
    (E) toxicological or health impacts.
  (3) When amending the list to add or delete categories of facilities, sources, or groups of facilities or sources, the executive director will publish notice of the proposed amendment on the commission's home page on the World Wide Web and will allow 30 days for comments. If a category of facilities, sources, or groups of facilities or sources is deleted from the list, the owner or operator will have 180 days from the date of publication of the amended list on the commission's home page on the World Wide Web to obtain, register, or apply for authorization under this chapter or Chapter 106 of this title (relating to Permits by Rule).

Source Note: The provisions of this §116.119 adopted to be effective September 4, 2000, 25 TexReg 8668