Texas Administrative Code › Title 30 - ENVIRONMENTAL QUALITY › Part 1 - TEXAS COMMISSION ON ENVIRONMENTAL QUALITY › Chapter 335 - INDUSTRIAL SOLID WASTE AND MUNICIPAL HAZARDOUS WASTE › Subchapter S - RISK REDUCTION STANDARDS › Section 335.552 - Definitions

Current through Reg. 49, No. 28; July 12, 2024
The following words and terms, when used in this
					 subchapter, shall have the following meanings, unless the context clearly
					 indicates otherwise.
(1)
				  Carcinogen--Substances which have been classified for human carcinogenic risk
				  based on the United States Environmental Protection Agency's Weight of Evidence
				  System of Carcinogenicity as Group A--Human Carcinogen; Group B--Probable Human
				  Carcinogen; or Group C--Possible Human Carcinogen.
(2) Carcinogen classification--The basis by
				  which substances are classified for human carcinogenic risk based on the United
				  States Environmental Protection Agency's Weight of Evidence System for
				  Carcinogenicity: Group A--Human Carcinogen; Group B--Probable Human Carcinogen;
				  Group C--Possible Human Carcinogen; Group D--Not Classifiable as to Human
				  Carcinogenicity; and Group E--Evidence of Non-Carcinogenicity for
				  Humans.
(3) Long-term
				  effectiveness--The ability of a remediation or corrective action to maintain
				  over time the required level of protection of human health and the
				  environment.
(4) Nonresidential
				  property--Any real property or portion of a property not currently being used
				  for human habitation or for other purposes with a similar potential for human
				  exposure, at which activities have been or are being conducted, having the
				  primary Standard Industrial Classification (SIC) major group numbers 01-48
				  inclusive, 49 except 4941, 50-67 inclusive, 72-79 inclusive, 80 except 8051,
				  8059, 8062, 8063, 8069, 81 and 82 except 8211, 8221, 8222, 83 except 8351,
				  8361, 84-86 except 8661, 87-91 inclusive, 92 except 9223, and 93-97 inclusive.
				  Nonresidential property includes all of the block(s) and lot(s) controlled by
				  the same owner or operator that are vacant land, or that are used in
				  conjunction with such business. For leased properties, nonresidential property
				  includes the leasehold and any external tank, surface impoundment, septic
				  system, or any other structure, vessel, contrivance, or unit that provides, or
				  is utilized, for the management of contaminants to or from the
				  leasehold.
(5)
				  Permanence/permanent/permanently--The property of achieving the maximum degree
				  of long-term effectiveness and of enduring indefinitely without posing the
				  threat of any future release that would increase the risk above levels
				  established for the facility or area.
(6) Point of exposure--A location where human
				  or environmental receptors can come into contact with contaminants; also, a
				  location which can be arbitrarily determined for purposes of estimating or
				  measuring the concentration of contaminants available for exposure.
(7) Practical quantitation limit/PQL--The
				  lowest concentration of an analyte which can be reliably quantified within
				  specified limits of precision and accuracy during routine laboratory operating
				  conditions. The PQL minimizes to the extent possible the effects of instrument
				  and operator variability and the influences of the sample matrix and other
				  contaminants or substances upon the quantitation of the analyte. "Specified
				  limits of precision and accuracy" are the criteria which have been included in
				  applicable regulations or which are listed in the quality control sections of
				  the analytical method. The PQL may be directly obtained or derived from the
				  following sources with preference given to the most recent, scientifically
				  valid method: federal regulations; EPA guidance documents; calculation from
				  interlaboratory studies; and experimentally determined analytical methods not
				  available from other existing sources.
(8) Residential property--Any property that
				  does not exclusively meet the definition of nonresidential property. Also, a
				  portion of nonresidential property that is used in part for residential
				  activities, such as a day care center, is defined as residential.
(9) Systemic toxicant--Substances shown
				  either through epidemiological studies or through laboratory studies to cause
				  adverse health effects other than cancer.