Texas Administrative Code › Title 30 - ENVIRONMENTAL QUALITY › Part 1 - TEXAS COMMISSION ON ENVIRONMENTAL QUALITY › Chapter 335 - INDUSTRIAL SOLID WASTE AND MUNICIPAL HAZARDOUS WASTE › Subchapter J - HAZARDOUS WASTE GENERATION, FACILITY AND DISPOSAL FEE SYSTEM › Section 335.326 - Dry Weight Determination

Current through Reg. 49, No. 28; July 12, 2024
(a) The method
				  of calculating the dry weight of each waste stream subject to assessment under
				  §
										335.325
				  of this title (relating to Industrial Solid Waste and Hazardous Waste
				  Management Fee Assessment) shall be determined initially and at any time the
				  waste stream undergoes a significant change in water content using the
				  appropriate method(s) as specified in this section. Determinations shall be
				  made from a representative sample collected by grab or composite. Collection
				  methods and sample preservation shall be by methods to minimize volatilization.
(1) Wastes which contain suspended solids
				  greater than or equal to 15% of the sample on a weight basis shall have the dry
				  weight determination calculated using the method specified in Appendix I in
				  §
											335.332 of
				  this title (relating to Appendices I and II).
(2) Aqueous based wastes which contain
				  suspended solids less than 15% of the sample by weight basis and which contain
				  a single liquid phase shall have the dry weight determination calculated using
				  Standard Methods for the Examination of Water and Wastewater, 15th Edition,
				  Method 209A, pages 92-93, or equivalent method in later editions.
(3) Organic-based wastes which contain
				  suspended solids less than 15% of the sample by weight and which contain a
				  single liquid phase shall have the dry weight determination calculated using:
(A) 1981 Annual Book of ASTM Standards, Part
				  30, Method E203, pages 803 - 812, or equivalent method in later editions;
				  or
(B) the method specified in
				  Appendix II in §
												335.332 of
				  this title.
(4) Wastes
				  which do not meet any of the criteria specified in paragraphs (1) - (3) of this
				  subsection shall have the dry weight determination calculated using:
(A) The 1981 Annual Book of ASTM Standards,
				  Part 23, Method D96, pages 64 - 81, or equivalent method in later editions;
				  or
(B) the method specified in
				  Appendix II in §
												335.332 of
				  this title; or
(C) The 1981 Annual
				  Book of ASTM Standards, Part 23, Method D95, pages 59 - 63 or equivalent method
				  in later editions. Method D96 determines the water and sediment content of the
				  sample. The calculations shall be modified to determine only the water
				  content.
(5) The method
				  for calculating the dry weight shall be that method specified in Appendix I in
				  §
											335.332 of
				  this title or an alternate method selected by the generator pursuant to §
											335.327
				  of this title (relating to Alternate Methods of Dry Weight Determination), if
				  the waste cannot be analyzed by one of the other required methods of this
				  section due to interfering constituents. Documentation identifying the method
				  of analysis and describing the interference shall be maintained by the
				  generator.