| (a) Definitions. The following words and terms, when used in this section, shall have the following meanings, unless the context clearly indicates otherwise. (1) Existing source--Any source which is not a new source or a new discharger. (2) Facilities or equipment--Buildings, structures, process or production equipment, or machinery which form a permanent part of the new source and which will be used in its operation, if these facilities or equipment are of such value as to represent a substantial commitment to construct. These terms exclude facilities or equipment used in connection with feasibility, engineering, and design studies regarding the source or water pollution treatment for the source. (3) New source, new discharger, and site--See §305.2 of this title (relating to Definitions). (4) Source--Any building, structure, facility, or installation from which there is or may be a
discharge of pollutants. (b) Criteria for new source determination. (1) Except as otherwise provided in an applicable new source performance standard, a source is a new source if it meets the definition of new source in §305.2 of this title (relating to Definitions) and: (A) it is constructed at a site at which no other source is located; or (B) it totally replaces the process or production equipment that causes the discharge of pollutants at an existing source; or (C) its processes are substantially independent of an existing source at the same site. In determining whether these processes are substantially independent, the director shall consider such factors as the extent to which the new facility is integrated with the existing plant, and the extent to which the new facility is engaged in the same general type of activity as the existing source. (2) A source
meeting the requirements of paragraph (1) of this subsection is a new source only if a new source performance standard is independently applicable to it. If there is no such independently applicable standard, the source is a new discharger. (3) Construction on a site at which an existing source is located results in an amendment subject to §305.62 of this title (relating to Amendments) rather than a new source (or a new discharger) if the construction does not create a new building, structure, facility, or installation meeting the criteria of paragraph (1)(B) or (C) of this subsection but otherwise alters, replaces, or adds to existing process or production equipment. (4) Construction of a new source as defined under §305.2 of this title (relating to Definitions) has commenced if the owner or operator has: (A) begun, or caused to begin as part of a continuous on-site construction program: (i) any
placement, assembly, or installation of facilities or equipment; or (ii) significant site preparation work including clearing, excavation or removal of existing buildings, structures, or facilities which is necessary for the placement, assembly, or installation of new source facilities or equipment; or (B) entered into a binding contractual obligation for the purchase of facilities or equipment which are intended to be used in its operation with a reasonable time. Options to purchase or contracts which can be terminated or modified without substantial loss, and contracts for feasibility engineering, and design studies do not constitute a contractual obligation under this paragraph. (c) Effect of compliance with new source performance standards. The provisions of this paragraph do not apply to existing sources which modify their pollution control facilities or construct new pollution control facilities and achieve performance
standards, but which are neither new sources or new dischargers or otherwise do not meet the requirements of this paragraph. (1) Except as provided in paragraph (2) of this subsection, any new discharger, the construction of which commenced after October 18, 1972, or new source which meets the applicable promulgated new source performance standards before the commencement of discharge, may not be subject to any more stringent new source performance standards or to any more stringent technology-based standards under the Clean Water Act (CWA), §301(b)(2), for the soonest ending of the following periods: (A) 10 years from the date that construction is completed; (B) 10 years from the date the source begins to discharge process or other nonconstruction related wastewater; or (C) the period of depreciation or amortization of the facility for the purposes of the Internal Revenue Code of 1954, §167 or
§169 (or both). (2) The protection from more stringent standards of performance afforded by paragraph (1) of this subsection does not apply to: (A) additional or more stringent permit conditions which are not technology-based; for example, conditions based on water quality standards, or toxic effluent standards or prohibitions under CWA, §307(a); or (B) additional permit conditions in accordance with 40 Code of Federal Regulation (CFR) §125.3, adopted by §308.1 of this title (relating to Criteria and Standard for Imposing Technology-Based Treatment Requirements) controlling toxic pollutants or hazardous substances which are not controlled by new source performance standards. This includes permit conditions controlling pollutants other than those identified as toxic pollutants or hazardous substances when control of these pollutants has been specifically identified as the method to control the toxic
pollutants or hazardous substances. (3) When a Texas pollutant discharge elimination system (TPDES) permit issued to a source with a protection period under paragraph (1) of this subsection will expire on or after the expiration of the protection period, that permit shall require the owner or operator of the source to comply with the requirements of CWA, §301, and any other then applicable requirements of CWA immediately upon the expiration of the protection period. No additional period for achieving compliance with these requirements may be allowed except when necessary to achieve compliance with requirements promulgated less than three years before the expiration of the protection period. (4) The owner or operator of a new source, a new discharger which commenced after August 13, 1979, or a recommencing discharger shall install and have in operating condition, and shall start up all pollution control equipment required to meet the
conditions of its permits before beginning to discharge. Within the shortest feasible time (not to exceed 90 days), the owner or operator must meet all permit conditions. The requirements of this paragraph do not apply if the owner or operator is issued a permit containing a compliance schedule under 40 CFR §122.47(a)(2). (5) After the effective date of new source performance standards, it shall be unlawful for any owner or operator of any new source to operate the source in violation of those standards applicable to the source.
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