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. 50, No. 13; March 28, 2025
(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.
(b) Wastes containing free liquids which are designated for disposal in a landfill and must be solidified prior to disposal shall have the dry weight determination made on the waste, prior to the addition of the solidification agent.
(c) If the dry weight ratio of a hazardous waste as measured under this section exceeds 10%, an operator of a hazardous waste injection well may elect to determine the composition of the waste stream that is inorganic salts or brines and separately record the weight of such inorganic salts for the purpose of assessment of the fee under § 335.325(q) of this title. The methods used to determine the weight of inorganic salts in a hazardous waste stream are subject to review and approval by the executive director. This subsection does not apply to:
(d) For purposes of a fee assessed under § 335.325 of this title, the dry weight of a waste disposed in an underground injection well, to which brine, inorganic salts, or other authorized agents are added to maintain density control to assure compliance with no-migration requirements of 40 Code of Federal Regulations 148 Subpart C, shall be determined prior to the addition of the agent. No solid waste, as defined by the Texas Health and Safety Code, § 361.003(37), may be excluded from the determination of dry weight under this subsection.